[quote name='musophilr' timestamp='1327327497' post='1509322']
The Anderton's spiel gives the impression the speaker will handle the bass. Question is, will the amplifier deliver it? From investigating the circuitry of a Selmer Treble'n'Bass 50 - OK OK I know it's not the same thing but get this - the only difference between the bass side and the treble side is the former has a 0.47µF d.c. blocking cap between it's preamp and the phase splitter, whereas the latter has a 0.22µF cap. So if it really is that easy to voice an amplifier for bass vs. treble, then a cheap component from Maplins with a switch (so you can have it as per original, or modded) should be easy to fit and you've got yourself an amplifier that'll do both. The main problem with putting bass through a guitar amplifier is that it sounds somewhat lightweight.The above cap. mod. could well fix that for you. As you turn it up closer to max you may start to worry about what's happening in the o/p transformer too, but at "home" volumes I wouldn't have thought that was significant: the neighours will complain before the o/p transformer begins to suffer. See your friendly neighbourhood amp. tech., and if he contradicts me, then believe him not me!
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Transformer is kind of the big deal, the size is proportional to how much low it can pass. Old amps tended toward big ones.