Electric Guitars/Univox BT-505


 I have an old Univox Bass amp BT-505 that I am going through.  It had a blown speaker and I'm testing and replacing some of the condensers and transistors. I just can't seem to find any info on this amp, ie..manual/schematic. I think it was made mid 60s. Anyone anywhere know anything about these amps?  Any info would be greatly appreciated.

ANSWER: Hey Craig,

Thanks for writing! Your best bet would be to contact http://www.elderly.com/ via an email. They specialize in vintage equipment and can probably offer you some assistance. Let me know if they get you the information you need. If not, I'll see who else I can find. Stay in touch...Johnny

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Thanks for getting to me. Unfortunately Elderly.com had nothing for me.  I can't believe this amp is so difficult to get info on.  Can you think of anyone/anyplace else I could check?

Hey Craig,

Thanks for writing back and I'm sorry you didn't the answers you were looking for. Not being a bass amp expert, I'm going to refer you to http://www.bassexchange.com/vintage-used-vintage-used-amps-c-2322_2323.html

Try the Bass Exchange (above link) and click on the contact button. Let me know if you strike out with them and I'll see who else knows about this amp. Stay in touch...Johnny

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Johnny Genocide


I can answer questions regarding playing, guitar models, guitar construction, amplifiers, effects, starting a band, recording and touring. As the Guitarist and singer for No Alternative I have recorded a number of albums, singles and CDs as well as extensive touring. I can also answer questions about starting a band and recording.


I have been a guitar player for 26 years. I play and tour with No Alternative. With a number of CDs out there are also 14 bands that have recorded my songs.


Can You Hear Me, Live at the Deaf Club (With KGB) SF Underground, Subterranean Records (No Alternative) Backtracks, Subterranean Records (No Alternative) Lifeline/No Alternative, Bull Dog Records (No Alternative) Johnny Got His Gun, Wingnut Records (No Alternative) SF Nights, Bachuus Archives (No Alternative)

B.S., Organic Chemistry

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