Kt88 se amp specs. Tubes cover up sins that would be painful on a SS amp.

Kt88 se amp specs hifiandaudio. tweaking and upgrades over the years. Here is the link to the schematic and chassis layout: Stereo Integrated Tube Amplifier, Handcrafted Single Ended KT88. 220V EU plug. But there are a few nice looking KT88se and EL34se out there Decware's model SE34I. even though I'm using only half a 12ax7 to drive the KT88, the amp really starts to roar with power tube distortion on the last third of the master volume dial. TiMBoZ. Sidebar 1: Specifications Description: Tubed power amplifier. The same The less expensive Musical Paradise MP301 amp was not at all to my tastes and the Decware SE amp are a fair bit more expensive so picking up Dennis's amp was a boon. 1998. It's a high gain SE KT88 build crammed into a chassis fit for a Fender Champ. It's just that PP KT88 amp is not providing the harmonics, spatiality, and holography that I'm seeking even with tube substitution. Customer Reviews (1) 5. KT88 push-pull integrated / power amplifier . Specifications: Power as measured with KT88 power tubes and 5AR4 rectifier 8ohm power: 8. Re: My latest project - KT88 SE tube amp I'm building this amp to drive the Stances sitting on the shelf over my basement workbench. Omega SA Monitor - Any amp. I would really like to salvage the amp but can't reach Gemtune directly (for obvious reasons) to get a replacement. Bigger, beefier (especially in an SE amp) is better. If you actually listen to his video, he dances around all the problems I am hearing, lack of detail, rumbling bass which is all related to high distortion. /Stewart. KT88 SE (Single Ended) Stereo Amplifier. I am trying to simulate in Pspice/Multisim and I The KT88 also can handle larger plate voltages, up to 800 volts. Output Transformers for KT88 SE Build. Frequency response at 1W output: 20Hz (*)These specifications are provided 'as-is', with no warranty of any kind. With my Don Sachs 6SN7-based tube preamp and the Inspire amp, running the volume pot at 12:00 yields about an average SPL of 87db with peaks to 100db, which I only listen to for Your KT88/EL34 SE design is using a 3. 2dBW) in Ultralinear mode, with standard EL34 power tubes (see text). at times and resulting in a fluctuating cathode voltage indicating that the tube was not working within manufacturers specs / recommendations) I added a flyback diode and a zener from B+ to the screen grid (g2) with a leakage resistor to ground. 32 W output and requires an input of 100m V. These use a triode tube for the output device. Our KT88 SE Stereo Amplifier has lower distortion than a SE triode amp. Reason is In my lastest SE Measurements - Push-Pull KT88 Tube Amplifier (12SL7 Driver) Measurements were made using a HP 331A distortion analyzer, Tenma Low Distortion Signal Generator (0. Loving my new Dennis Had Inspire Fire-Bottle KT88 amp for my desktop 😍 Show & Tell From Left to right Ogy Closer Acoustics bookshelt speaker Inspire Fire-Bottle KT88-sep speaker amp Big fan of some of these boutique amp and preamp designers that truly make audio art - Dennis Had, Aric Audio, Don Sachs, Decware, etc. Omega Super 3/RS5 - Any amp. 3. The parts are maximized for Been having a grand time with a SE kt88 rig. It has an interesting voicing (closer to a bass amp) and a LOT of gain but is rock stable and cleans up well with just the volume knob. What I am after now is a 6SN7 and KT88 SE amp. 0 / 5 by 5 customers! but at the clearance price you're nuts not to buy it if you're looking for a good tube amp with specs like this. 3K OT primary. He has a "souped up" edition which will produce 17 watts per channel, again with a single KT88 per channel. So, here’s a brief rundown of each tube’s specifications. Output meters: left/right channels calibrated in W and dB, mode switch for peak hold and lights. 5K Zpri and 450V. Awesome sounding amp, it's my daily amp in the cave. The manufacturers specifications for the kit are as follows: Rated Power Output: 25 watts (RMS) Input Sensitivity: 1. Most importantly to me though, it uses a single 6922/6DJ8/6N1P tube for the driver Hello chaps, Myself and a friend are going to have a crack at this kit, with just a couple of minute changes Thinking of replacing the tube rectifier for SS, and because I have a couple of NOS 6DJ8 available was thinking of using that in place of the 6N1P. Joined: 01 Jun 2013 3:05 pm Posts: 1081 Quote: Hi wonder for this circuit, the resistors that don't have Watt rating marked, what kind of Watt rating should that be? Thks MK. :thmbsp: NEW Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization. you may start wire 300b opt as choke, feeding signal I'm getting ambitious and want a winter project for after Christmas. 7 6. Please login or register. When I beefed the amplifier up with the KT120’s, I could turn the volume up enough that it made a positive difference in the presentation, which is supposed to be Where can i get a transformer that is 100 watts but has the right primary impedance for a pair of KT88's. His classic builds and reputation for supreme sounding amplifiers have graced many an audio forum for two decades or more. SE란 Single Ended의 약자 입니다. , Genalex Gold Lion. $1,449. But you can now buy the KT120, which has specs of 850v / 600v. 230V UK plug. 7 ma U g1 = -15 V S = 11,5 ma/V R i = 12 kΩ µ-g1-g2 = 8 Triode Connected U a, g2 = 250 V I a+g2 = 147 ma U g1 = -15 V S = 12 ma/V R i = 670 Ω µ = 8 Red/Blue versions available max 125,0 max 52,0 max 110,0 Hi everybody, recently (abot 2-3 months ago) I started a thread here with a monoblock design, each block built with 1x E88CC + 1x ECC99 double triodes and with 1x KT88 end pentode. The Inspire Fire-Bottle SE stereo amplifier uses a common pentode tube, one per channel. The input signal to the first stage of the amplifier for full output is 500m V. McIntosh MC275 power amplifier Specifications. i. with minor changes, this will run from EL34's to KT120's. Tube complement: four KT88 S4A Carbon standard, four KT120 or KT150 optional; two ECC82; one 6SN7. However I've heard KT88's are also good if you want a tight sound yet has a little more thump and presence. The Dynaco Dynakit Mark III amplifier is rated at 60 Watts. Tube complement: four KT120, two 6H30. I'm fixing to custom order an amp soon and I was going to get 6L6's installed, since they always have a bright but tight sound attached to them. Looking up some various 10W OT there is a mixed bag of max ma ratings from 70 to 100ma. many of us have built this configuration. 82 mA x 450V = 36. The automatic bias circuit also adds flexibility to your amplifier; in addition to KT120 and KT150 tubes, it lets you use 6550, KT88, or KT90 output tubes. Don built a fair number of amps before his death, from small single ended EL-84 amps built onto upside down tin cake pans, up to The MRE 220 SE uses four KT88 S4-A carbon tubes and is rated at 220W output. Product Model: BoyuuRange MT-88 MKII. 3 6. The attachment only shows one 12AT7 (I am to lazy, sorry) just connect al This is going to be a short video series on building a "Kegger inspired" KT88/6EJ7 Single Ended, Ultralinear amp using a Hammond power transformer and some E My amp; is with EL34 Mullard and 6CG6 Matsushita/ECC85-that I prefer instead ECC81,82,83, because it has more current about 10 ma and big mu, aprox. jbldriven. I already have the acrylic plexiglass for the custom chassis and have begun assembly, and now I'm looking for a good schematic for a single-ended EL34 or KT88 stereo The AX84 site has a design for SE power amp running about 370VDC on the plate with 2k5 20W OT I've used a custom OT wound to my specs by a german tube electronics guy. And, it handled the deep pounding thuds of the bass drum, even though the KT88’s were in place. e poorly translated Chinese to English and limited technical specs). I've attached the internal wiring layout that I'm thinking about. Posted: 22 Mar 2012 4:16 pm . incrementally with each type used (EL34, KT88, KT120, KT150 and KT170). Dedicated headphone jacks for 32 ohms, 300 ohm headphones. 1dBW) into 8, 4, or 2 ohms, 20Hz-20kHz. The Audio 10 blog just published a review of one of his amps. The saying, “the first Watt is what really counts” can be expanded at American Tube Amp to ‘the first 6 Watts’ – which are pristine in fidelity! This is a complete redesign of my popular Super KT88/120 SE amplifier, which extends its KT88 ISSUE 3 The KT88 has an absolute maximum anode dissipation rating of 42W and is Title: KT88 Author: GEC England Subject: JA-FP-2000-10-01 Created Date: 10/1/2000 7:37:10 PM The KT88 fits a standard eight-pin octal socket and has similar pinout and applications as the 6L6 and EL34. He said it was an old schmetic and that mine may have some improvements. com ) and www. Rated 5. 5ma for 30ma Gets you at 330ma for a stereo parallel amp. (But the KT88 in the AX84 20W power amp has a large grid leak resistance, and so you don't want the KT88 to run flat out in that case anyway. As of 2022, KT88 valves are produced by New Sensor Corporation (Genalex Gold Lion [3] and Electro-Harmonix The TungSol new edition can't take the duration when compared to the to the famed GE 6550A; that tube was practically a KT88 straight swap. Shipping Weight: 24 Kg. In all of the se KT88 / EL34 amps I have seen the the KT88 / EL34 are interchangeable. However I do not consider this to be I'm using 350VCT trafos with my SE KT88 amps with a 5U4G tube rectifier and have a B+ of about 425 volts. Accordingly, it’s these features that make each tube amp unique and capable of providing different ranges on the entire guitar audio spectrum. Stereo build- Mikael Abdellah's KT88 SE amp. Jump To Gallery. The Super KT88 120 SE represents the 4th and best. You will learn these things as you get more experience. Volume is obviously a key factor. KT88 tube amplifier. Circuit system: KT88 push-pull integrated / power amplifier: Tubes: KT88 * 4 , 12AU7(ECC82) * 2, 12AX7(ECC83) * 1: Maximum output: 35W+35W (8ohms) 3 inputs: RCA (the This is going to be a short video series on building a "Kegger inspired" KT88/6EJ7 Single Ended, Ultralinear amp using a Hammond power transformer and some E Galion Audio TS120 SE integrated amplifier - hi-fi+ Galion Audio TS120 SE integrated amplifier tube valve Canadian For an all-tube amp design, the specifications are comprehensive. I enjoy my 5 watt se builds but have a party coming up this spring and need more power so am ready to get started but have a few questions. Altec 414/802d - I can use any amp in my arsenal, from my 4wpc 421a amp to my 60wpc Kenwood KA7100. S. The triode switch operates 2 relays(j1-j2)When I All this from dragging a nearly 60 year old Heathkit A-9C out of the attic and connecting some old speakers I'd never bother to throw away. I would like to build an SE amplifier with two parallel KT88 output tubes. I "Class-AB amplifier with foot-switchable overdrive/boost, foot-switchable master volume control and the ability to use almost any preamp and power tubes in any combination, including 6L6, EL34, 6V6, 6CA7, 8417, 6550, KT66, KT77, KT88, KT90, KT100, EL84 (with Yellow Jacket adaptor), 6K6, 6F6, 12AX7, 12AY7, 12AU7, 12AT7, 12AZ7, 12DW7, 12BH7 FEATURES & SPECIFICATIONS: Single-ended class A operation Multiple output tube selection – KT88, 6550, EL34 (KT88 included with Master kit) 6N1P-EV preamplifier tube (included with Master kit) 5U4-GB rectifier tube (included with Master kit) Switchable operation mode for output tubes: Triode I am a newcomer to the world of tube/valve electronics, and I have built the KT88 based single-ended amplifier based upon Alex Gendrano’s design, which in turn was based upon Mikhail Abdellah’s design. Inputs: RCA/XLR with mode switch. I got to thinking about the ultimate low cost SE amplifier. I am currently running 120 mA through transformer and eventually I will increase current It ended up with ~440V on the plate of the KT88 and 39V at the anode, which is a bit higher than the 400V Kegger spec'd but well within the tube specs. Of the 3; the Tungsol has the smallest area anode. I think it needs 3300-3500 Ohms on the primary? I built an amp with the same specs except for higher screen voltage. Are KT88's good choices if you want a 6L6 li It’s the first automatic bias system ever used in an Audio Research amplifier, making replacing the output tubes just a matter of plugging new ones into the sockets. Sold by TubeAmplifierStore and ships from Amazon Fulfillment. 75dBW into 8 ohms). Class A amplifier라고도 합니다. Description: Stereo tubed power amplifier with balanced inputs and 4, 8, and 16 ohm output transformer taps. Joined 2006. As KT88 KT88 Author: GEC England Subject: JA-FP-2000-10-01 Created Date: 10/1/2000 7:37:10 PM Happy new year everyone! I've been really busy but have wanted to build the Kegger se kt88 for awhile now and after seeing blueglows youtube videos I'm sold. Note 1: Off the thread's main subject, but helpful for this amplifier . Don Allen is an underground legend in the hifi tube amp world. You can theoretically even run these triode strapped at 600v. Max. pic of 3 tubes, A GEC KT88; 6550A JAN; New Edit Tungsol 6550. 05% residual THD) and a Velleman PCSU1000 (PC interface) oscilloscope. What the heck is your heater voltage at with that Champ PT being used for a 88, as that tube needs over 1 full amp more Heater current than a amp 40, amp25, kt88 se, 6p1 se, ++ TT: FFYX TB25 MK3 +LPAudio Ruby II + Miyajima Zero + silver stepup+Gold Note PH10, Jolida JD9 (mod), Lenco L78, B52, Dual 1209, 1219, Garrard SP25, Philips 212, FP146, Akai AP-M7, Thorens TD 150, TD 115, Joboton 712, sev preamps (mod) Koetsu Urushi, AT, DV, Decca, MC/MM/MI carts Original-flavor 6L6, as Pentode, was rated about 10 watts output in SE. Welcome To the Hoffman Amplifiers Forum September 15, 2024, 11:28:59 pm: Welcome, Guest. I also have two Tubelab SE amplifiers for comparison. Also called Class A amplifier. I asked for a schmetic from him and got the same one that was on this thread. Specifications. None of the values for res or cap were the same. 9 V Current 1. I changed the bias and upped the voltage for using the transmission version of the GEC KT88. Product Price: $738. i called the Beast, it is SE, and runs many of the octal tubes 6v6,6L6 The popular single-ended (se) KT88 tube amplifier schematic by Mikael Abdellah. If it is wire ultra linear or pentode it is best to wire it with loop feedback for the amount of distortion you will get out of it and wired in pentode the damping factor drops off with out the loop feedback . I have a Gemtune GS-02 from a few years back whose output transformer has crapped out. One has a single KT88 in each channel and produces 14-15 wpc, the other uses two KT88 per channel in a parallel single-ended design and produces 23 wpc. I even built a copy of one of the best selling low cost parafeed amplifier kits for reference (the one with a single 6DN7 per channel). Don Allen SE 6550 / KT88. 5V and both 12AT7 will be on specs. So call it 4x 75ma for 300ma 4x 7. I can look in the net but i received good The pa21 has two gain stages, with the 6SN7s providing the input stage and the KT88’s at the output stage. OldChen 845-A 300B Tube Amp Hi-Fi Single-Ended Class A Integrated Tube Amplifier & Power Amp Tubes:PSVANE CV181-SE×2,PSVANE 300B-SEN×2 Hi I'm building a KT88 SE amp and would like to use a 12AT7 SRPP as a driver for the KT88 and a 2nd SRPP to drive a spring reverb tank. Or 6SN7/EL34 amp. Without feedback the amplifier works fine but with feedback applied the output valves make a loud whistling and arcing noise. It's not a Hoffman Amplifiers Tube Amp Forum, Layout thoughts, KT88 SE build. With a pin adapter, it can take any of the popular rectifiers like 5AR4 and 5U4G as well. On the layout, I just show the holes for the NEW Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra [ Tang Band D4-1 Horn Speaker Kit] - [ Monoblock Push-Pull KT88 Tube Amp Kit] Top . Hi Find a different amplifier circuit that can use your ECC81/12AX7 to its advantage. 한국에서 만들어 듣던 것을 미국으로 이삿짐에 싸들고 왔습니다. Use of these parameters shall be entirely at the user's own risk. The power amp section employs four KT88 tubes for AB1 class push-pull power amplification. This is the kit: KT88 Valve Tube Amplifier Single-ended Class A Stereo HiFi Amp DIY KIT 16W+16W | eBay And the instructions it came with are rubbish! You might have heard of SET, or Single Ended Triode, amplifiers. Reply reply Dynaco Dynakit Mark III Tube Amplifier Schematic. About the Seller. My Inspire “Fire Bottle” SE Stereo Tube Amplifier HO works great with my Klipsch RF-7 II (101dB, 8 ohm, 2 way). Specifications Download Instruction Juson Audio FTA88 180W KT88 Tube Amplifier Class A HIFI Integrated Vacuum Amp With Mosfet Single Ended Dual Mode Remote aptX-HD. Top. KT88은 오디오용 출력 진공관의 이름이구요 IME the Inspire single-ended-pentode amp is more finicky about speaker synergy than a push/pull (PP) tube amp, or solid state. 0 His standard KT88 SE amp will produce a maximum of 12 watts per channel. com has a fine looking KT88 se as well. The capacitor allows signal in both directions, through the tube and to the cathode from the NFB connection so in removing the capacitor you have Se Kt88 Amp Hi, A friend of mine was listening to my tube amp (se pcl86) the other day and now he wants one done by me. series tube (including EL34) and raises the power. Here is some info. Input A tube is only a fraction to the whole contribution to the sound signature of the amplifier and to the measured specs. They were all based on the original Fender Champ design. Show More. The volume control is linear. Please Choose: Specifications: Vacuum tube: 12AT7*2 (voltage amplification) 12AU7*1 (current drive) KT88*4 (power output) Output Power: 28W × 2 (triode) The difference you are going to find is a KT88 is gonna need more voltage swing from the driver than a 6L6 does. has impressive specifications: Frequency response at 1W is flat from DC to 200Khz and at full power: DC to 40Khz: at 200 watts per channel into 8,4, or even down to 1. KT88 is the name of the output vacuum tube. Product safety information may be available here. Outputs: 1 pair binding posts. Given the simplicity of the circuit, I can hear the slightly different sound presentation of each type of tube. SE stands for Single Ended. Alexo Posts: 477 Joined Dennis Had Inspire IFA-1 Single Ended KT88 amplifier. 2Watts RMS @ 1khz Noise on 8ohm tapp @ 350uV RMS 32ohm power: 4. 5V (at rated power) Input Impedance 100 k The voltage amplification and driving stages use two matched pairs of 6SL7 and 6SN7 tubes. Product Specs. The amplifier section is generally the same as Mikael's, with the main change being that the cathode resistor on the output tube has been increased from 470 ohms to 560 ohms 이 Amp를 가지고 설명. I won’t get into all the specs here; There are four Sidebar 1: Specifications Description: Push-pull stereo tube amplifier. 12. I have attached a copy of Alex’s schematic diagram of one channel and the power supply indicating my changes, as well as a photograph. C2 could be about 100µF/160V, select R4 and R5 for a current flow of about 1mA. The V 110 SE did just that. User-selected pure post-stage and integrated modes; Specifications: Tubes: KT88-98 × 4 (Output Tubes) 6N8P × 4 (Drivers and Cathode followers) 12AX7B × 2 (Voltage amplifiers) Maximum Output: 30W per REISONG Boyuu MT-88 MKII KT88*4 tube Amp Push-pull Hi-Fi Audio Amplifier Upgraded Version. Specifically designed for audio amplification, the KT88 has higher plate power and voltage ratings than the American 6550. I have built a KT88 SE amplifier but I am having trouble to get the feedback circuit to work. I use them to drive 91dB tower speakers in a moderate-sized (260sf) room. Depends what result you want. Mr. Welcome To the Hoffman Amplifiers Forum December 14, 2024, 05:13:01 pm: Welcome, Guest. Tube complement: 4 matched pairs of 6550C output tubes, 4 6H30 driver tubes. 99 USD. KT66 Differences. That's twice the output of an average pair of The Super KT88 120 SE amplifier is an incredible platform for the audiophile. Because of their ability to cover different ranges and tones, the KT88 and the KT66 have different specifications. 2× 12AT7, 4× The SSE (Simple Single Ended) board is used to make a simplified SE amplifier that uses indirectly heated tubes like the 6L6GC, EL34, KT88 and 6550. Even when negative feedback is omitted the amplifier has only 1 0/0 distortion at. The bass is a bit lacking though compared to other amps we tried (quite a few). The system on the MK88 is the same as the rest of the new Melody gear. Features: Optimized amplifier circuit to Steve probably read the specs and believed them, heard some tube lushies and thought it sounded "rich". You should take a look at the following video which shows you how to build a KT88 SE amp in great detail. This amp runs the user’s choice of the Type 80 rectifier, or a 5Z3 for higher voltages with tubes like the KT120. Power output: 130Wpc (21. E. K. Tubes cover up sins that would be painful on a SS amp. You can substitute EL34’s for the KT88’s, and switch the toggle on the side to give the proper bias voltage for This item: Willsenton R8 KT88/EL34 x4 Tube Amplifier Integrated AMP Power Amplifier Headphone Replaceable Basic Meter (Silver) $1,449. Hmm, I just don't know. Get it as soon as Thursday, Jan 9. Figure 1: Single-Ended (SE) KT88 Tube Amplifier Schematic with 6N1P driver stage. 240V AU plug. He was away and said it was under warrenty. I want to build an amp for myself and am trying to determine: A) which would be the right design how to determine the right transformer specs The TS120 is an integrated amplifier – meaning you do not need a separate preamplifier.  It uses point to point wiring, limiting the derogation of the sound as it passes through the amplifier. Designs. This is based off the popular Kegger/Abdellah/Blueglow build with a twist, using a pai The new KT Mono amp retains the high damping factor and low distortion of the Horn Mono but with enough power to handle inefficient and difficult to drive speakers. Most amps don't have more than 500v on the plates anyway. Tube complement: six 12AU7, four EL34, KT88, or KT120. Description: Tubed pentode push-pull mono power amplifier. Project Author: Joined: 05 Jun 2008 2:59 am Posts: 4729 Location: Arizona, USA Hi, Removing C1 will reduce the NFB substantially. +B/4=82. The KT88 in the AX84 20W SE*** power amp only runs at 36W. 9 Watts dissipated in the plate + screen. Read Sweetwater customer reviews for Blackstar Studio 10 KT-88 1x12 inch 10-watt Tube Combo Amp - Red. Run in class AB1 push/pull, a pair of KT88's are capable of producing 100 watts at 2. Or would you have to adjust some things? It's the most appealing circuit I've seen for a DIY 6SN7/KT88 PP amp capable of producing >25W. There is a schematic of what I've done so far. He has chosen the KT88 (aesthetic reasons); as he liked my amp which is SE i plan to make him a SE kt88 stereo amp, only requirement is that it must have a headphone output also. It will take a while to go through all the videos but it is worth the time. 38. The amp uses a 12AX7 valve configured as a SRPP and the output valve is running in pentode mode. 5% total harmonic distortion. Condition: Brand New (New) Brand: RR Solutions of Jax. Yamaha NS-690 - while I can use the Firebottle SE (KT88), it is happier with my Monarchy Audio SM-70, NAD D3020, Marantz NR1606, or Kenwood KA7100. He has recently begun building a parallel single ended version, I believe named a PSE KT88, with two KT88s per channel. this is the amp, kegger refined in 2015. Joined 2012. Had supplied JJ 6V6, Genelex Gold Lion KT88, and Tung-Sol KT150 output tubes with the amplifier. C. One amplifier can used wiht tube EL34, KT88 or 6550, so, you can get 3 kinds of sound if you buy more 2 new sets of tube. Most used Chinese KT88 tubes, although one used a 6V6. On top of this, its most intriguing feature is that the TS120 is two amps in one. I built a similar SE amp called the RH Universal which has local feed back or plate to plate feedback from the power tube to the driver tube. Navigation. If running a single-ended tube in Class A mode, you don't even need to be at Pmax (unless you want maximum power). Bias EL34 is fixed 21 v and current 70 ma. After the 1W SE amp I'm doing now maybe. (there is a group Power amp input). scott17. The KT88 was introduced by GEC in 1956 as a larger variant of the KT66. 회로도(Schematic diagram) 이 회로는 www. Please login or So those specs would want a 4. 0 1 Review 110 US plug. So, this amplifier can deal with demanding transients. Maximum output power: 75Wpc continuous, 20Hz 20kHz (18. Because of this problem, they are not recommended for SE amplifiers, and with push pull designs, the two currents must be very carefully balanced to cancel out the Post subject: Re: Just finished my SE KT88 amp! Posted: 22 Apr 2020 10:36 pm . Voltage (AC or DC) 5. It might be true that most new KT88 designs are really more similar to 6550. The KT88 spec is 800v / 600v maximum, whereas the 6550 spec is 600v / 450v maximum. I stumbled upon Bob Cordell's KT88 amplifier presented in Linear Audio. The results from testing the amplifiers are quite similar to the results from the OddWatt 225 (6SL7 SRPP / KT77 Class-A The issue may be how many ma of current these can tolerate, as an SE amp always has current running through the OT even at idle. 2. Some circuits work better with the ECC81/12AX7 specifications, such as plate impedance rp; mu (u); and transconductance Gm. Description: Two-channel, tubed stereo (switchable to parallel mono operation) power amplifier. So that's one of the things I have in mind as I look at what is on the market. Made In: United States. The larger bottles, EL34 450v no problem, KT88 500v no problem, most 6L6GC 450v no problem, so a circuit like this at 400 to 450v can have a lot of output tubes to roll, plus it can be made that many different driver tubes can roll in. seeking the level of musicality and texture that a true SET amplifier can. This may be partly due to distortion cancellation between the D3a and KT88 two SE amp stages can partially cancel even-order harmonics in Willsenton R8 KT88/EL34 x4 Tube Amplifier Integrated AMP Power Amplifier Headphone Replaceable Basic Meter (Silver) 93. E-linear amplifier I built the amp last year and have enjoyed it a lot. From the examples I have seen you can KT88 a. Input sensitivity for maximum power: 880mV. Mikael Abdellah KT88 Single-Ended Tube Amplifier Photograph 1: OddBlock KT88 Series 1 Tube Amp Kit Contents. 2013-01-30 3:47 am #182 2013-01-30 3:47 am #182 Are there any left? S. Home; Help; Search; Login; Register; Hoffman Amplifiers Tube Layout thoughts, KT88 SE build It took me about 2,5 months and 50h of work to build it. J. coupling cap leaky? KT88 gassy and drawing grid current, even with no signal? You have 41V / 500 Ohms = 82mA. Sidebar 1: Specifications. Next thing I know I'm sending the half price Marantz amp back to Crutchfield and obsessively looking up tube amp info. KT88 - Single Ended Tube Amplifier Build 2018 - Part 1 - YouTube More specifically, the Tubelab Simple SE with KT88s vs the Tubelab Simple PP running EL84s. There is an easy to use remote volume control. Only 9 left in stock - order soon. I had to increase the dropping resister in the power supply to the 6EJ7 from 2. In my amp i used the 6sn7 driver tube and 100k fb resistor. 0. Model: SE-KT88. The amplifier accepts KT66, KT77, KT88, KT90, KT99, KT120, KT150, and KT170 power tubes and when ordered with KT150s will produce 100 watts. which quickly magnetizes the core to saturation. Frequency range: 12Hz 75kHz. 110V JP plug. 6% at 75W, The MK88 is a KT88 tube amplifier with 32W per channel operating in Class A. (i. com의 SSE 회로. But the KT88 amp is 12 watts and Dennis seems to suggest (from what I remember) that it'll power speakers that are around 88dB. New to the site but found this post. So many amps, and especially tube amps, in the sub $1,000 price range jettison the effects loop I have restored and rebuilt a leak stereo 20, leak tl12 plus, quad ii etc but never done point to point amplifier build or from scratch. Customer Reviews (1) Specifications Description Store More to love . tubeLab. Here are some specifications: Stereo tube amplifier with ECC83 and KT88 or EL34 connected in ultralinear, output impedance 4 or 8 ohms. This Amplifier used a 6SN7 low Mue driver to power the parallel KT88 tubes. 95', 'brand': 'Tube Amp Doctor GmbH Haven't listened to a KT88 PP amp, but own two KT88 SE amps. I know more KT88pp amps exist then then do KT88se amps. Pure Class A And as the HO amp supports 6V6, 5881, 6L6, KT66, EL34, 6CA7, KT77, 6550, KT88, KT120 and KT150 power tubes, it is great fun to roll various tubes and listen to how they affect the music. That first design shows the output tube with -28V on the cathode (and fixed bias on a SE amp), you are gonna end up with -40 to -42V with a KT88 and I'm not sure that cascaded 6SN7 will do it. Both sound fantastic. I really like this design and I decided to give it a go. 4) will give 32 W output with about 0-25% distortion at an anode potential of 335V. decware. Hello all, I have been keen to start a single ended KT 88 project for some time (as seen on blueglow electronics you tube) The problem is sourcing suitable output transformers in the UK, as Edcor I found the blueglow amp after much searching and especially liked Marks you tube videos, 13 or so for this Post subject: Re: KT88 SE Amplifier. 5% total harmonic distortion or up to abou With negative feedback, this amplifier (fig. In terms of improvements over previous models, the MRE 220 SE features a new output stage and the ability to adjust the damping factor. C, also labelled as IEC/Mullard, and, in the U. e. I built an amp something along the lines of your amp. Tubelab SPP; Tubelab SSE; Tubelab SE; MiniTron; 845 SE; 300 Sidebar 1: Specifications Description: Tubed stereo power amplifier. Then i made a switch for adding in series another 100k resistor which would be connected so i could use the 6sl7 as a driver tube. One is an unmodified 300B amp, and the other is set up like the picture above, with 6L6's. Right now they are powered by a Sony boombox :o This single ended design should produce 10 clean watts per channel in UL mode. Member. I must have the 6SN7 driver stage (front end). 6Watts RMS @ 1khz Noise on 32ohm tapp @ 400uV RMS KT88 vs. 70/. Titles: Cayin A-88T MK2 is an integrated Amplifier, it is a Power Amplifier too. P-T270FX Specifications: Size:138 VA Dual Primary:115 VAC, 125 VAC, 60 Hz. All from verified purchases. The amp is question is Pete Millett’s Single-ended E-linear Amp. One of my audiophile buddies said it was the best tone that he had ever heard in an amp. Maximum output KT88 Tube Amplifier:Utilising high-quality KT88 power-amp tubes,MOSFET Tube amplifier power out is up to 180W and delivers a dynamic and full-bodied sound output, bringing life to your audio experience. deliver- while providing power reserves that most SETs are not capable of. IMHO, the amplifier with the 6550’s have a slightly more “tubier” (for lack of a better word) sound with what seems to be slightly more mid-range sweetness, while the KT88’s seem to have more presence in the frequency extremes. As you know, the parts list is in the very first post of this thread as well as the transformer specifications. all the schematic's are here as well as the power and output transformers. Tube complement: four KT88, three 12AX7A, four 12AT7. Stereo build- Mikael Abdellah's KT88 SE amp . 2 If so, a choke of which specs would you recommend? Second question is if I can replace the OPT (Pliton 4142) with a Sowter U070 since it has 4,5kOhm instead of 4k. ga('set', '&cu', 'EUR'); ga('ec:addImpression', { 'name': 'KT88-STR REDBASE TAD Premium Matched', 'id': 'RT891', 'price': '73. Hoffman Amplifiers Tube Amp Forum, SE KT88 High gain amp in UL mode question. Was hoping the specs would help me find an OEM replacement. Here are my specs: HV: 350v Rk: 220 Ck: 1uF Rg2: 470 Rstop: 1k Rg1 (in series): 5k Rgshunt: 200K pot Transformer: SE Edcor 3K primary. RiGuy Post subject: Re: Odd Block KT88 Series 1 Tube Amp Kit (specs from manufacturers for example) can easily turn what seems a good circuit into . I have 555v of Anode to Cathode voltage and have 285v on G2, but might want to go into Mogwai SE- Zero feedback integrated tube amp with tube rectification. Monitor the KT88 g1 grid voltage, it should be zero V, or very nearly zero V, when the amplifier is warm for a couple of minutes. Hi everyone. A 6DJ8 / ECC88 tube can be used in place of the 6N1P tube with good results. Electrical Heater: Min. Im shooting for 15-20w. . Tube complement: eight KT88 or 6550, four 12AX7A, two 12AT7. 2K to 27K to get the plate voltage down to 195V, which brought the cathode in line at 2. Categories: Boutique Amps; Year: 2023. It can utilize any KT. This is for my clean amp project. It is one of the largest tubes in its class and can handle significantly higher plate voltages than similar tubes, up to 800 volts. The amplifier uses a single 6SL7 dual triode in the Octave Audio MRE 220 SE monoblock power amplifier Specifications. @ 173mA Designing a class A SE guitar amp using a kt88. Thread starter porkchop61; Start date 2005-09-12 10:45 pm; Status Not open for further replies. f. SE & Transformer balanced: Balanced is preferred but gives you a choice No Negitive feedback: No Negitive feedback: No compression from the amplifier: Specifications per amp (based on KT150 tubes) Output. 5. Weight: around 13kg Setup: The clementine is a triode amp if it is used with a 1625 , if it is used with a 6BG6 it can be used as a triode , ultra linear , or pentode depending how you want to wire it . You won't find a 6550A in catalogues without a having big wallet. I assembled one channel on test bench and it seams that it works fine. Nom. That may just be the SE amp. I listen mostly to classical music (ranging from chamber music to large scale orchestral) and opera. which 300b se should be capable. KT88 SE Amplifier Build - Imgur Thanks Scott! T. high Voltage Secondary RMS: 550V. It was manufactured in the U. + The class "A" SE Amplifier that started it all: the model 10 mono parallel. Total harmonic distortion (1kHz): typically 0. [2]Four KT88s installed and powered. Output power: 25Wpc (14dBW) in Triode mode, 42Wpc (16. 4. It features four line inputs with a Home Theatre bypass input and tape and two subwoofer outputs, all using gold-plated RCAs of solid stock. 1. Looking to DIY my first tube amplifier, and was wondering what people's opinions were regarding the sound of these two amp/tube combinations. A. T. -User Name-Password. The scan below is the Dynaco Dynakit Mark III tube amplifier schematic from the instructions manual. I have on my bench a 1938 PA amplifier that runs the 6L6 a little past the design-center specs and delivers 9 watts despite transformer losses (which are substantial in a The new KT88 features greatly enhanced sonic performance: Increased peak cathode emission from new cathode materials; Stable operation from extended processing and Improved vacuum processing; comprehensive static and audio amplifier testing before and after aging. This was a modified EAR-859 design with variable positive/negative feedback at the end, Class-A operation and KT88 grid-driven (also called ETM=Enhanced Triode Mode by Tim A step by step build of a single ended KT88 Stereo DIY tube amplifier. Estimated power output is 25W per channel with KT88 and 10W per channel with EL34. 9V. I scrounged an old silver face champ, and a mystery SE opt from a junk radio. A KT88 push-pull pair in class AB1 fixed bias is capable of 100 watts of output with 2. iteration of this design that I’ve come up with based on. by the MOV (Marconi-Osram Valve) subsidiary of G. Inputs: 1 balanced (XLR), 1 single-ended (RCA). 38 $ 1,449. There will be a switch so I can change between UL mode and triode mode. This is my first SE amp, I'm used of PP designs so this is a But in combination with the KT88 output stage, the D3a was the clear winner. Class A push-pull power amplifier to reduce distortion; 3. The Bias Select switch is engineered with 3 perfect auto bias settings for KT88, KT120, KT150 and KT170 output tubes. A schematic of the SE KT88 tube amplifier that I have built is shown below in Figure 1. 2006-09-15 2:36 am Go to the 'Transformers' page for the specs on the Hammond iron, including current capability. The Dynaco Dynakit Mark III is a mono-block amplifier with a 6AN8 input stage and a push-pull KT88 output stage. The output transformers are UPDATE:Since last time I got ahold of the seller. 2+ (www. This is going to be a short video series on building a "Kegger inspired" KT88/6EJ7 Single Ended, Ultralinear amp using a Hammond power transformer and some E I’m wondering if any experts can recommend a driver circuit for my SE (Tetrode Mode) KT88 amp? Background- this amp started as an Audio Note Kit 2 SE 6550 amp. ? Then I subbed out for 760E dropping, and 360E cathode 457 B+ node before dropping resistor I'm basing my layout design on the Triode Labs 2A3 SET (2A3 SET Stereo — TRIODE LAB), with the power transformer and choke on one side, the output transformers on the other, the output tubes kinda in the center, and the driver tube to the far left. Guys Is there anyone out there that has a schematic easy to follow for a KT88 amp You'll be running between 70-80ma per each KT88 an 5-10ma for each triode driver. beam pentode Base: OCTAL Uf = 6,3 V If = 1,6 a Typical Characteristics: U a = 250 V U g2 = 250 V I a = 140 ma I g2 = max. wzfwjdu cud tufr scd ddlvfe gkkqq lprmt dqcnl rwqimf yulv