Re: Convert Vintage Valve Radio to Guitar Amp
You'll need a pre-amp with low impedance for ANY valve radio.
The Gram/PU sockets are for hugely higher signal and x10 or more impedance.
Also most don't have a large enough speaker or very much power. So to make a PRACTICE amp you need a pre-amp.
No modification needed. Just a preamp. Also ANY radio, unless restored by someone expert, is going to fail in a few hours due to leaky paper capacitor.
Even the 1960s valve radios with a DIN socket are no use for a guitar without a preamp. The line level from a reel to reel tape recorder is similar to the crystal cartridge and even an phone/MP3 earphone is often a lower level. It's just the record player cartridge or tape line out can't drive a low impedance like modern earphones or a speaker directly.
Even a DJ mix console with magnetic phono / line in switching is no use for an Electric guitar, you need a proper mixing desk or proper Guitar Pre-Amp.
|