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modification

  1. Michael Inglis

    Modified MOD102+ Build Progress (Fender Champ Style 5 Watt Build with S.S. Rectification)

    EDIT: Ah shit, i posted this in "The Workbench" not "Building the Classics" If a mod sees this, could you move it? Thanks! Well i finally had some time the past couple days to start the MOD102+ project ive been planning. The MOD102 and MOD102+ is a Fender Champ style amp with SS rectification...
  2. M

    Marshall Jcm 800 - 2203 vertical input '80/'83 HELP is this original?

    Hi, I found this early '80s JCM 800 - 2203 vertical input on sale, and I need help to know how original it is, before buying it. Can anyone tell me if it got through some major modifications in the past years? Looks like someone made an efx loop which has been now removed. Thanks for help
  3. lenheyvan

    Creating Brouwn-Sound with Modern Amplifiers

    I enjoy using modern Marshall-type amps and exploring Brown-Sound. I've gained expertise in amp modification by actually trying things out on my own, so I've decided to make a book about it. (Now on a 5-day free campaign on kindle) How Tube Guitar Amplifiers Work (Part 1) - Explanation of the...
  4. The Creator

    JVM410H BIAS problem after modding and retubing - SOLVED :-)

    Hi there experts, I had my JVM410h dropped to the ground from 3 feet after a gig, and it was not played until it was checked. So when doing the check, I would do some moddifications as well. First I saw that the R26 was blown, this could be a bad tube. The tubes were originale from 2008 so i...
  5. Entropia Amplification

    Laney GH50L rebuilt/mod

    We completely gutted GH50L, then we put into it our preamp circuit, furthermore we brought in extra features: - presence control with selectable frequency - mid-shift - variable feedback - poweramp limiter - all tube footswitchable series FX loop with both send and return level adjustment Share...
  6. MatFnEhUK

    Gain reduction mod for the JVM

    Quick question about the gain reduction mod for the JVM for those of you who have tried it. Is there a big drop in gain to the OD orange and red modes with this mod? At the moment I use a 5751 tube in v1 to improve the clarity and remove fizziness by slightly reducing the gain in these two...
  7. Ryan Morris

    Peavey 6505 MH 4 ohm mod?

    I'm looking into buying a Peavey 6505 MH but I noticed that the amp can only be run at 16 or 8 ohms. Does anyone know if there's an easy mod to make it work at 4 ohms? For example, I had a JCM 900 head, switchable from 8 to 16 ohms, However, you can go into the amp and resolder a connection on...
    • Ryan Morris
    • Thread
    • 4 ohms 6505 6505 mh amp impedance jcm 900 marshall mod modification peavey
    • Replies: 18
    • Forum: Other Amps
  8. D

    My Bluesbreaker Build (help And Advice Wanted)

    Hi MarshallForum folks! Im currently building a Modified Kt66 Bluesbreaker with greenbacks etc for a university project (Pretty cool right?) but im planning on adding a reverb tank to the combo and having it integrated in the circuit (Basically a fender twin style reverb). Solid state isnt a...
  9. The Creator

    Jcm 2000 Tsl 60x Serial Loop Mod

    Hi all Marshall users, this thread is about adding a serial loop to the JCM 2000 TSL serie. It might be applicable to others also... As we all know the stock loop on this amp is in parallell, and not so good. I have studied the wiring and have 2 options for adding a serial loop. Help me out if...

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