Whats the circuit?

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Kee22
Posts: 26
Joined: Fri Jan 05, 2024 6:12 pm

Whats the circuit?

Post by Kee22 »

Just bought a noname homemade amp. Anyone who recognizes the circuit. Former owner says its a Fender hotrod.
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maxkracht
Posts: 595
Joined: Tue Dec 10, 2019 7:18 pm
Location: Iowa, USA

Re: Whats the circuit?

Post by maxkracht »

I'm guessing it's based on an older Bassman. Tubes and transformers might give some more hints.
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mauiboy81
Posts: 194
Joined: Thu Jun 28, 2007 1:09 am
Location: Maui

Re: Whats the circuit?

Post by mauiboy81 »

Looks to me like it’s based on a single channel of the 5f6a tweed bassman.
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Kee22
Posts: 26
Joined: Fri Jan 05, 2024 6:12 pm

Re: Whats the circuit?

Post by Kee22 »

It does lack the rectifier tube and there's a master volym and a mid control in the tonestack. It has a generic Fender 40w output transformer.
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mauiboy81
Posts: 194
Joined: Thu Jun 28, 2007 1:09 am
Location: Maui

Re: Whats the circuit?

Post by mauiboy81 »

Kee22 wrote: ↑Wed Jan 10, 2024 7:09 pm It does lack the rectifier tube and there's a master volym and a mid control in the tonestack. It has a generic Fender 40w output transformer.
Pre phase inverter master and fixed presence. Individual bias controls for each power tube. I’m color blind so I don’t do well with identifying resistor values by the bands especially in pics. lol
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