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Hoffman Amplifiers Tube Amp Forum, Need a schematic for quad 6aq5 power section. Welcome To the Hoffman Amplifiers Forum May 20, 2024, 01:00:28 am: Welcome, Guest. Please login or register.-User Name-Password. Home; Help; Search; Login; Register; Hoffman Amplifiers Tube Amplifier Forum » Amp ...building 6aq5 based harp amp 6x4 rectifier12ax7 preamp. Hi does anyone know of a schematic I could use that would use these tubes. I have a chassis with these tubes and transformers that look good they are labeled C-9.281 (515 613) and C-9 264-E (515 623) The amp was one I bought as parts had a 6at6 wired in as well outputting to a …I tap into the AM section of this old radio to make a guitar amp.https://merwinmusic.com/2019/03/30/radio-guitar-amp-conversion/Patreon: https://www.patreon....SE 6AQ5 stereo amp. 05-15-2015, 07:24 PM. Hey everyone, first post to the forum! I cannabalized a defunct Sony TC-500a tube reel to reel. It has a matching pair of HUGE 5K OT's, a solid PT and all the tubes to compliment. I have loads of experience with building guitar tube amps so i was thinking a small desktop tube amp would be a fun project.Tweet. #3. 02-12-2008, 01:39 PM. Direct european replacement is the EL90. You can try some of the ELxx small penthodes, from EL80 to EL90, some of them woul be too powerfull maybe, like the EL84. EL85 (6BN5) could be a good candidate but has a little less power than the 6AQ5 / EL90. 6HG5 / 6AQ5A as Enzo pointed should be another good election.DollaTek 2Pcs 5654 6J1 Preamp Electron Vacuum Tube 7-pin for EF95 6AK5 5654 6J1 403A Audio Amplifier Tube ReplacementProduct Description & Features:5654 6J1 vacuum tube, 7-pin.Only for EF95, 6AK5, 5654, 6J1, 403A amplifier vacuum tube replacement.High reliability and stability.HiFi and soft sound, low noise.Heater Voltage: 6.3V ;Heater Current: 0.17A;Grid Voltage: 120V ;Grid Current: 7 ...Riverstone Audio - Tested/Matched Pair (2 Tubes) 7-Pin JAN 5654W Fully-Tested Vacuum Tubes - Upgrade for 6AK5 / 6J1 / 6J1P / EF95 - JAN 5654W Platinum Grade PairProduct Description & Features: Brand: Riverstone AudioManufacturer: Riverstone Audio *** Estimated Price: $23.95+ - CLICK HERE for more product details including updated prices, images & customer reviewsAffiliateDemo of my latest D-lab amp solid state to tube combo amp creation. This amp utilizes my Opti-plex circuit. Sweeping from a Marshall to Fender Champ to Delux...Hello, what would be the best combination of tubes for a guitar amp? PRE 6EM7 DOUBLE TRIODE MU.68 6GK5 SINGLE TRIODE MU.78 6CG8 TRIODE PENTODE MU.40 6EA8 TRIODE PENTODE MU.40 6CG7 DOUBLE TRIODE MU.20 6AU6 PENTODE AMP 6DQ6 6AQ5 6EM5 12BY7 6CH6 ALL TUBES ARE FROM A OLD TV6v6 pp2 Amplifier push pull tube circuit vacuum diagram seekic 6l6 class Amp tube push pull output class 6aq5 guitar switch. 6l6a vacuum tube push-pull amplifier circuit diagram. Going 6w6s19p push pull class a circuit i've got going right now. only 6w but 6u9 6aq56l6 pp push pull triode tubes amp pentode audio yves diyaudio mono gif sch ...I once had an old Gibson guitar amp that ran a single 6AQ5. The 6BQ5 / EL84 came a few years later and stole the 6AQ5's thunder in many audio applications. TV's, radios and HiFi sets all went on a diet over the years, getting smaller and smaller. The octal got replaced with the 9 pin miniature, which gave way to the 7 pin miniature, but the ...A (4) piece lot of audio - guitar - amplifier - HAM - radio - TV tubes, type 6AK5 .The tubes are used , TUNG-SOL brand.Tubes test good on the Heath IT-17 tube tester.While you're here, please have a lThese listening impressions of various 5654/6AK5/CV4010/EF95 tubes are made with one of my two headphone amps, a Little Dot MK IV. ... a bit of an edge. That said, with the French Mullard CV4010 I could "see" layers and layers of vocal overdubs and guitar tracking on The Beatles Abbey Road (UK 1st pressing) that is tremendously satisfying ...AMP: Get the latest Ameriprise Financial stock price and detailed information including AMP news, historical charts and realtime prices. Indices Commodities Currencies StocksFind many great new & used options and get the best deals for 6AK5 - RCA Brand - AUDIO GUITAR AMPLIFIER HAM RADIO TV tube - lot of (4) at the best online prices at eBay! Free shipping for many products!For instance, most guitar amps use 'undersized' output transformers, often with lower impedance primaries than in hi-fi apps, to get the tubey sound. Common SE guitar amp OT impedances Also, the volume/power level you need/want makes a difference- Do you want to be able to play the amp wide-open at 'bedroom' levels, ...Here is another D-lab electronics retrofit amp. This time from tuner to guitar amp "Tramp" This amp went together well. I utilized the original tube sockets....Find many great new & used options and get the best deals for 6AK5 - RCA Brand - AUDIO GUITAR AMPLIFIER HAM RADIO TV tube - lot of (4) at the best online prices at eBay! Free shipping for many products!Marla Amplification Limited Edition Run S10V - Handwired Class A 11 Watt Combo 2024 - Blue Satin. Brand New. Asheville, NC, United States. $859. $859. Add to Cart. 14-Day Return Policy. On Sale. Foundling Rapscallion GSE-5 w/ Attenuator - 5 Watt Hand-Built Single-Ended 6V6 Tube Guitar Amp.6AQ5 A - AUDIO GUITAR AMPLIFIER HAM RADIO TV tube - lot of [4] Opens in a new window or tab. Pre-Owned. $6.75. Top Rated Plus. Sellers with highest buyer ratings; ... YOU GET 100 NOS Tube Sockets 7 pin Vintage USA made 6X4 6AU6 6AK5 6HS6 6AQ5 EF95. Opens in a new window or tab. New (Other) $101.88. Top Rated Plus. Sellers with highest buyer ...the 6005W is the Super-6AQ5 made by General Electric for JAN=Joint Army-Navy. he W marking at the end of the type number refers to the particularly robust design in …May 1, 2023 · Joined 2014. 2023-05-01 9:17 pm. #2. The 6aq5 is more thought of as a mini 6v6. It handles a little less voltage and dissipation than the 6v6. The 6005 is the premium version and are cheap and easy to find NOS. They sound good if not slammed to the limits. The 6cm6 can also be used as a 6v6 replacement but is a 9pin base like an el84.6AQ5-6AQ5 guitar amp. This is a small practice amp for my home in Sweden. My design polycy of building amplifier is little weird, I first choose the personnel of tube names regardless of circuit. I insist the set of tube names that should sound nice to me. And I like this 6AQ5-6AQ5. You know, 6AQ5 is a miniature power tube which is equivalent ...

The gain of the 6AK5-triode is about 25x (I think). So the 6AK5-triode grid bias needs to be at least -1V. That means 0.5V input signal should result in 12.5V to the 6V6 grid. Since a triode will typically begin to draw grid current with bias closer to 0V, we want to keep the grid bias more negative than -1V anyway.D-Lab Regency MR-10 dual 6AQ5 Class A Boutique tube guitar amplifier. Used – Excellent. Battle Creek, MI, United States. $445. $50 price drop. $395. Add to Cart. Price Drop. D-Lab Sweeper Vertical output Class A 6DQ6A Boutique tube guitar amplifier.I just double checked it again and I'm still coming up with the same thing..... 116ma for two tubes, or 58ma each. Compared to the 27 in the VM amp, that's quite a disparity. The VM amp appears to run 290 volts B+, with 250 going to the plates. That's a 40 volt drop withing the windings of the OPTs! That's a LOT of DC resistance in there!!Univox 1051 ( 1 , 2 ) tube bass and guitar amp head, probabyl built in 1968 6 tubes, 3 12AX7A and 3 6L6GC, and 2 large transformers inside, rotary switch to change the impedance for 2, 4, or 8 ohm speakers. Below the rotary switch it says "music power 200 watts". There is a channel for guitar, and a channel for bass.Part 2 and the final chapter of the GR test equipment re-purpose to a tube guitar amp. Man did this one turn out great! Tony C had nothing bad to say about i...In the example he uses an EF86, which is a 9 pin pentode more frequently found in guitar amps than the 6AU6 which is more of a phono / radio tube. But they both have the same basic elements and there is a lot of good info there for you. Here is an example in action, with Mark Lavelle's Decimator. Check out how he sets up the 6AU6,The Howler Monkey Push Pull 6AQ5 Guitar Amp Amplifier_Circuit Circuit Diagram. Radio Spares Output, Transformer in excellent condition with original hardware in a grey hammerite, New Old Stock, Never installed in an . Ross' DIY Stereo Tube Amp| Builds and Project Cars forum. Vacuum varnished, Primary:, -205-225-245V 50/60 cycles, Secondarys ...This Night Lights item by mavrim has 65 favorites from Etsy shoppers. Ships from Port Jefferson Station, NY. Listed on Jan 19, 2024Order Mullard/RTC 5654 Black Plate (6AK5W) vacuum tubes online, in stock and ready to ship! Find reviews, data sheets and specs to upgrade …From that point on, most amps were provided with preamp distortion controls. Playing with distortion has since become an important part of Electric guitar playing Types of Amplifiers There are two types of amps: solid state and vacuum tube amps. Additionally, there are some amps that combine both solid state and tube technologies.That will give the voltage for a center-biased, 100% dissipation idle point. For 1 6K6 and 10k Za, Pa max = 8.5W, so Va-k = 292. For 1 6AQ5 and 10k Za, Pa max = 12W, so Va-k = 346 (note spec Va-k max is 275, which would require a 6k3 Za to center bias) The screen should be ~50-75V lower than the plate.For "ordinary small triodes" like 12AU7, 50K to 250K is a good starting value. The 6AK5, when triode-strapped, is just an ordinary small "medium"-Mu triode. Wire it up. For very small signals, it will actually work fine without cathode resistor. For stepped-up microphones in modern studios, you do need some bias.D-Lab/Ampex 6AQ5 guitar tube ampFor the new year, D-lab is going back to the basics. Back in the day, I made these cool ampex speaker amps, they were a hit and affordable, so here it is again. A cool compact 3 watt amp with super class A sound. Great for your recording studio.3 Tube Line-up: 6AQ5...

The 6AQ5 is a very popular power tube used in a lot of equipment. Some of the variants are 6AQ5A, 6HG5, 6005 and EL90. These are military-grade JAN GE 6005W from perfect military cases of 200. Any order in multiples of 200 pieces will be shipped in sealed military cases of 200 peices. Price is for.6AK5 / EF95 / 5654. No Reviews yet. Click the image to enlarge. SKU: NOS-6AK5. Availability: Usually ships within 24 hours. USD $‎6.95. Each. Quantity.Oct 20, 2013 · 2014-05-04 2:27 am. #12. Hi, Between 2009 and 2013 I have self designed and built two SE DC 6AQ5 amps for my own use. Liked them both. Attached is my most recent topology. Most recent amp used half a 6SL7 DCed into a 6AQ5 with conservative Golden Ratio ( 62% ) plate dissipations, and a 5U4GB rectifier tube.For parallel, you should halve the reflected load of a single tube, so to get maximum power for Center-bias Class A with 2 parallel EL86: Zout = [Vp/ (Pmax/Vp)]/2. [250/ (12/250)]/2 = 2k6. 3k2 will work but you probably …Duncan's Amp Pages - Internet resource for guitar amps and vacuum tubes Duncan's Amp Pages - last updated 21/02/17 17:17:02 Duncan's Amp Pages - last updated 21/02/17 18:41:23 . Welcome to Duncan's Amp Pages! This is an internet resource for those interested in guitar amplifiers, vacuum tubes, and design tools such as SPICE modelling.Site Supporter. Sep 1, 2015. #3. So -- the 6AQ5 has, like, zero cachet with the cognescenti ... but it is, of course, essentially a 6V6 (again, a tube with near-zero cachet) in a 'cheap radio tube' 7-pin package... and not a bad audio tube at all IME/IMO. I stumbled across this little Canadian-made hifi console amp at the local, bi-annual (or ...Any 6V6 circuit should be fine but keep supply voltage below 300V. A 6BQ5 circuit should also be OK (under 300V) if you adjust the cathode resistor(s) - about double the value.2017-09-14 2:05 pm. #2. The 6GK6 and the 6BQ5 / EL84 are the same tube with a different pinout. Compare the specs and curves. The 6GK6 is somewhat cheaper, but not in large supply, or current production so the price will eventually rise. If you build your own amps with a switch or PCB jumpers on the stated pins there are several other tubes ...The 6AQ5 is a beam power tube based on a 6V6 and really does sound amazingly like one - only when really cranked to the max does it sound different and that's still good. The 6BQ5 is the EIAA designation for the European designed EL-84 pentode which sounds, to my ears, much like a EL-34 - a "family" resemblance."In the example he uses an EF86, which is a 9 pin pentode more frequently found in guitar amps than the 6AU6 which is more of a phono / radio tube. But they both have the same basic elements and there is a lot of good info there for you. Here is an example in action, with Mark Lavelle's Decimator. Check out how he sets up the 6AU6,6AQ5 Single Tube Amp Kit [ TU-8150 ] NEWS & SUPPORT. Model number. TU-8150. Price. JPY 49,500 (incl.tax)The 6AQ5 has always been a sleeper tube for guitar amps. Basically a miniature 6V6. I built a 22W amp with a quad of 6AQ5s and cathode bias. It's a great sounding amp. Reactions: Prince of Darkness and Rambozo96. Rambozo96 Senior Member. Joined Mar 14, 2020 Messages 1,659 Reaction score 1,192 Location Texas Guild Total 5A cool compact 8 watt amp with super class AB sound. Great for your recording studio. This is the 2nd made, with a few minor improvements. 4 Tube Line-up: 2-6AQ5 (out), 12ax7 (pre), 6AV6 (Inverter) The amplifier is built in a vintage Lafayette 520 police VHF receiver. All hand wired on terminal boards.6AQ5 amp project. 10-03-2018, 10:00 AM. Hi everybody, I have some parts laying around and have been thinking of building a guitar amp based on 6AQ5 power tubes. The output transformer is a Stancor A-3852 which is rated at 40 DCmA / 18W. I am wondering if this output transformer would be suitable for a power amp with 4x 6AQ5 tubes.6005W JAN/GE aka 6AQ5A / 6AQ5W / EL90 / 6HG5 / 6669 / CV4019 NOS-NIB Pentode. the 6005W is the Super-6AQ5 made by General Electric for JAN=Joint Army-Navy. he W marking at the end of the type number refers to the particularly robust design in accordance with military requirements. 6AQ5 were used in the Fender Musicmaster Bass Amp and …Best Sellers in Guitar Amplifier Tubes #1. JJ 12AX7 / ECC83 Preamp Vacuum Tubes (Three Pack) ... Matched Pair JAN 5654W Vacuum Tubes 7Pin Upgrade for 6AK5 / 6J1 / 6J1P / EF95 AMPTATA Audio Fully-Tested Platinum Grade Version. 4.5 out of 5 stars ...D-Lab/Ampex 6AQ5 guitar tube ampFor the new year, D-lab is going back to the basics. Back in the day, I made these cool ampex speaker amps, they were a hit and affordable, so here it is again. A cool compact 3 watt amp with super class A sound. Great for your recording studio.3 Tube Line-up: 6AQ5...A (4) piece lot of audio - amplifier - HAM - radio - TV tubes, type 6AK5. The tubes are n. o. s. in the boxes, various branding. Tubes test good on the Heath IT-17 tube tester. While you're here, please have a look at my other listings! Payment: Pay-Pal is preferred. I will accept a check from USA . Kindly make your payment within 4 business days.

The Bloom voicing switch on the highest-priced trio of Gen 3 100-watt Katana amps seems to be aimed at stage dwellers. It's an enhancement of the Class A/B power amps stage (many modelling amps ...Mikael Abdellah KT88 Single-Ended Tube Amplifier Schematic. Output power will be about 5W. The 470 ohm cathode resistor sets bias at a 75mA which is only about 68% of the maximum plate dissipation so expect long tube life with this amp. Choose a good quality audio output transformer with a 5k primary and rated for at least 10W.6AK5 Sensibly equivalent ¶ to: 403A 5654 6069 6AK5W 6F32V 731A CV850 DP61 EF95 M8100 PM05 Extras National Union G8LSD Valve Collection Other 6AK5 exhibits . The 6AK5 is an amplifier pentode that is physically small and the electrode assembly is no more than a 10 mm cube. The use of this device lay in low noise RF amplification at VHF.Matador is a travel and lifestyle brand redefining travel media with cutting edge adventure stories, photojournalism, and social commentary. A busker strums classic Celtic tunes on...tube amp schematics in those. b. Look at the schematics of the Drake TR-4 ham radio transceiver. It used to be very widespread in the 70's and used a 6AQ5 for the receiver audio. c. I believe the Gibson Skylark tube guitar amps also used it. d. If you find a large public library somewhere that doesn't throw out older books they might have ...The RCA registration mentions 6J6 for use as an RF amplifier or oscillator/mixer in class C and also gives AF operating data (horrible curves for audio though). Seeing as the 6J6 base is 7BF, I would guess that bases like 7AT (1AQ5, 1R5), base 7AV (1S4) and base 7B (6A6, 6E6, 53, 5608A) (then bases 7BA, 7BB, 7BC, 7BD ) probably came before it ...Amp tube push pull output class 6aq5 guitar switch. Amplifier push pull audio simple schematic circuit power russian using class diagram ka7oei mosfet tubes figure choose boardBias el84 push 6bq5 ultralinear pentode implementation 6p3p push-pull tube amp circuitEl84 (6bq5) push-pull valve amplifier power supply schematic.Because you have a 100k Ohm cathode/suppressor resistor to ground, any AC filament to cathode leakage Will Add Noise to this circuit. Also, you have a 470k Ohm g1 resistor to ground, the 6AK5 maximum resistor specification is 100k Ohm. Once you have B+ and a plate/screen load resistor, you are going to need a coupling cap from the plate/screen ...Web most recent amp used half a 6sl7 dced into a 6aq5 with conservative golden ratio ( 62% ) plate dissipations, and a 5u4gb rectifier tube. The 6aq5 is the miniature version of the popular 6v6 octal tube. 12ax7, 12au7, 6aq5, 6×4 voltage : ... The Howler Monkey Push Pull 6AQ5 Guitar Amp Check Details Vacuum tube amp help Instructables Check ...Are you in the market for a new guitar? Look no further than GuitarCenter.com, the ultimate destination for all things guitar-related. With a vast selection of guitars, expert staf...Gear. Best Guitar Amps 2024: 15 Supreme Tube And Solid-State Amps For Home, Studio And Stage. By Daryl Robertson. Contributions from. Matt McCracken, Ross Holder. last updated 25 March 2024. Our pick of the best amplifiers for all budgets from Fender, Vox, Blackstar, Tone King and more. Jump To: Quick list.May 25, 2019 · I also added a 100k pot in series with a 22k resistor to adjust the nfb. I also added a dpst switch on G3 of the tubes to be able to use 6AK6 (1.1w) 6AM5 (3 watts) or 6AQ5 (4 watts). I just use pin 1 only for G1 and switch G3 pin 7 to either pin 2 (cathode) on the 6AK6 or leave pin 7 open for 6BM5/6AQ5.

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Push-Pull (PP) EL84 (6BQ5) or 6V6 (6AQ5) Tube Amp Schematic with Dynaco A-410 Transformers. Schematic is from the Dynaco Super-Fidelity Output Transformers catalog.D-Lab/Heathkit IO-10 oscilloscope conversion guitar amp. One of a kind creation. I will not be making another. This is a new design featuring my ECB-AB driver board. A very clean build, Cathode biased, very reliable. The oscilloscope provides a unique look for a small practice head. Tubes: 12AX7, 6AV6 and a pair of 6AQ5'sRe: 6AU6 6AQ5 guitar amp. 6AU6 can easily sit with 300V supply, 10mA in 15K, 150V on plate (2.3W Pdiss), gain around 40 (similar to our triodes). 2nd harmonic distortion will be fairly high at high input level (over 1V). Not sure how this is "better" than 12AX7, except it puts homeless bottles to work.Description: JAN 5654W tubes is a great upgrade for Little Dot and Little Bear amps! This tube is a direct replacement for 7-Pin 6J1 / 6J1P / 6J1P-EB / 6Zh1P-EV / 6AK5 / 6AK5W / EF95 tubes. This tube is very high quality and will last for a long time. We subject these tubes to multiple test cycles and plate voltages to determine stability.

3 Products. Mojotone Master Volume Modification Kit. $12.99. Mojotone Studio One 1 Watt, 2 Channel Guitar Tube Amp Kit. $470.00. Mojotone GA-5 Style Guitar Tube Amp Kit. $392.00.6AQ5. The 6AQ5 [1] ( Mullard–Philips tube designation EL90) is a miniature 7-pin (B7G) audio power output pentode vacuum tube with ratings virtually identical to the 6V6 at 250 V. [2] It was commonly used as an output audio amplifier in tube TVs and radios. It was also used in transmitter circuits. [3]

Subscriber. Apr 1, 2013. #11. The 8800 series amps used 6V6 (octal) power tubes and a 6CA4 (noval) rectifier, so yes, that one has no 5V filament tap on the PT. The 9300 used 6BQ5 (noval) power tubes and a 5U4GB (octal) rectifier. this amp also uses a choke, and has slightly bigger OTs than the 8800.Mikael Abdellah KT88 Single-Ended Tube Amplifier Schematic. Output power will be about 5W. The 470 ohm cathode resistor sets bias at a 75mA which is only about 68% of the maximum plate dissipation so expect long tube life with this amp. Choose a good quality audio output transformer with a 5k primary and rated for at least 10W. …

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