Vintage YBA-1, Marshall small box , Tweed Bassman 57 5f6

Circuit comparison of a Traynor yba-1, Marshall Jtm 45 1985, 1986 and tweed bassman 5f6a
amps used are 67 Yba-1, 69 1985, 57 5f6, 75 yba-1. 82 1986

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Music

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[UKToneKing]

So if I take my master volume out of the circuit of my bassman 100, that will give me better tone ? also I am updating all the cabs, what about the transformer ? should I just keep the original ? I want my bassman to have the early blackface specs, is it possible at reasonable price, and will it sound better, which specs shall I use out of the early bassmans, which would U say is best ? also what are the best tubes for a bassman apart from nos

[patfurlan]

@UKToneKing I really can't advise you on this your amp is probably closer to the tone you seek stock, rather than swapping a bunch of parts ... IMHO you should always start with gear that sounds right & good and tweak from there. If it does not sound great sell it when its clean and stock and buy the amp you really want.

Whenever I hear a great amp I open it up and make notes, measure voltages look for mods, mistakes and oddities and take extensive notes...

[UKToneKing]

@UKToneKing , I always thought reverb in a hot rod deluxe was spring and not tube driven ? that's why I stated tube driven reverb, weather it be tube driven spring reverb or just plain old spring driven, their is a clear difference, I want a blackface or 59 circuite if possible in my bassman, but I am not wanting to go out and spend 00000 to get one, could U let me know what kind of options I have, baring in mind I will not be doing the work, some day maybe lol but like U say not right now

[patfurlan]

@UKToneKing a hot rod deluxe has a spring tank and an IC driven reverb (solid state)

your amp can sound very good but it is a different circuit from a bassman

simply have your tech blackface it

[UKToneKing]

@patfurlan well the amp is a bassman, not the 59 original, but still a bassman, it sounds like a bassman, my friends 59 sounds a tad better, but nothing major, every little helps I guess, would U class a blackface as a bassman, or are U of the old circuit only in your opinion, as I know some are

[UKToneKing]

@patfurlan u missed my point totally, just wanted your incite on how I could upgrade my circuit, Your right I could go out and buy a blackface bassman, but that would be double what I payed for mine, probably a lot more, it would not cost what I payed for my amp 2 upgrade the caps and take out the master vol, so in the long run it would be a lot cheaper, ( I have an amp tech who I meet with next week to do my upgrades ) I just wanted a clear picture in my mind on what I could do before I met him

[patfurlan]

@UKToneKing you are way over you head.. spring reverb units ARE tube driven & at this point you should buy a non master fender amp with factory reverb and sell or trade that head

I do not think you have the basic knowledge to service your amp let alone turn a VW BUG into a prosche carrera turbo I'm not being mean just save your dough and start with simple projects like wiring a guitar or building a pedal with a kit ... after you build that stuff mod your builds you existing amp is fine

[UKToneKing]

@patfurlan I could take the master out of the circuit of my bassman ? I was thinking of doing that when I upgrade the caps, would I be able to add a reverb to the bassman circuit and make it tube driven rather than spring ?

[patfurlan]

@UKToneKing most of my amps don't have a master volume, I prefer pre-master volume amps from most makers... with most master designs even when they are on 10 they affect the signal... the very first early 70's master volume designs were the worst foor this

[UKToneKing]

@UKToneKing so if the master is on 10, it is not effecting the tone of the bassman ? please let me know your answers asap