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Amp that uses 6AQ5 tubes?

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  • Amp that uses 6AQ5 tubes?

    Do you guys know if there is a guitar amp that uses 6AQ5 miniature 7 pin output beam tetrode tubes?

  • #2
    6AQ5 amp

    There are a few. Gibson Scout 17-RVT uses 6AQ5 with 305v on the plates.

    With respect, Tubenit

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    • #3
      6AQ5 output tubes

      The Gibson Crestline GA-5 Skylark amps use 6AQ5's in pairs.

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      • #4
        6AQ5

        This is a version of DaGeezer's Little Wing amp that originally used 6BM8 tubes. I drew up this schematic but never got around to building the amp.

        I have a layout for it also.

        Should use a 270 ohm cathode resistor for the 6AQ5's, I think. (per Gibson schematics)

        With respect, Tubenit
        Attached Files
        Last edited by Tubenit; 06-08-2009, 01:30 PM.

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        • #5
          6AQ5 Blues Amp

          Ok, I also found another schematic that I drew up some time ago and have built as an amp. It has a layout with it also.

          I think the value on the cathode attenuation resistor may be incorrect? I may need to be 540 ohms for each one individually? (or something close to that?)

          With respect, Tubenit
          Attached Files
          Last edited by Tubenit; 06-08-2009, 01:31 PM.

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          • #6
            56T with 6AQ5

            I built the 56T with EL84's. It's perhaps the most touch sensitive amp I've played? I think a version of it could be done with 6AQ5's, but have not built one.

            Check for errors in the schematic.

            With respect, Tubenit
            Attached Files

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            • #7
              The early versions of Fender's Musicmaster Bass amp used 6AQ5's. Very nice amps!

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              • #8
                Micro Champ

                Adam Alpern has one with a single 12A_7 and single 6AQ5. I built one and connected it to a Weber 8" speaker and called it a harp amp. It sounded good to me.
                Attached Files

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                • #9
                  The Gibson GA5T (first 'Crest' version) used twin 6AQ5s as did the Guild 66J. There's also a drop-in substitute, the 6005. J

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                  • #10
                    Gentlemen , we tried a SE 6AQ5 amp with the 6U8 preamp , http://www.wattkins.com/node/15993 ... The amp sounded good , but had a somewhat "ratty quality" to the tone...tried many changes , no luck ... even went with higher V PT ... same thing ??? ... You guys have any idea what could be causing that ???

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                    • #11
                      OK, we're now working on a 6AQ5 PP amp ... Looking for a suitable PT to supply the necessary 250-275 V at the plates... You guys have any preference ???

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                      • #12
                        Amp that uses 6AQ5 tubes?

                        Here's a thread discussing a 6aq5-based tweed deluxe type clone that I built a while back. . . .

                        http://music-electronics-forum.com/t12663/

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                        • #13
                          Reason Amps Bambino....very nice btw...k, not exactly vintage, but interesting.

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                          • #14
                            just stumbled on this thread and thought I'd add my 2 cents:
                            The Excelsior Model 10 used a pair of 6bq5's. I think the tube lineup was 6AU6, 2-12AX7's, 2-6BQ5's, and a 5Y3. The amp had 3 inputs, 1 channel, volume,tone, tremolo with speed and intensity. Good little amp.

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                            • #15
                              Originally posted by davohilts View Post
                              just stumbled on this thread and thought I'd add my 2 cents:
                              The Excelsior Model 10 used a pair of 6bq5's. I think the tube lineup was 6AU6, 2-12AX7's, 2-6BQ5's, and a 5Y3. The amp had 3 inputs, 1 channel, volume,tone, tremolo with speed and intensity. Good little amp.
                              Yes, but his original question was regarding 6AQ5 tubes, not 6BQ5/El84 tubes.
                              Should be a simple mod to use the 7 pin socket though.... similar enough.
                              Bruce

                              Mission Amps
                              Denver, CO. 80022
                              www.missionamps.com
                              303-955-2412

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