Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: dbishopbliss on October 23, 2025, 07:52:38 pm

Title: Kay Model 777 Reverberation
Post by: dbishopbliss on October 23, 2025, 07:52:38 pm

I got this cool little reverb off of CL today. I plugged it in and it sound REALLY good. Not quite like a Fender Reverb. More plate-like than the drippy surf spring reverb sound but I dig it.


I'm wondering if it is safe to use...

• I'm thinking that I should probably add a 3 prong power cord but maybe that's not necessary.
• There doesn't seem to be any sort of fuse... maybe that's bad.
• The power is turned on using a switched pot. Anything to be concerned about?

There doesn't seem to be any information about these boxes our there. The circuit is different from the Model 710 that in the schematics library. What are your thoughts?


Thanks!



(https://i.ibb.co/ZRM1ckFv/A3-DED41-B-6078-408-E-962-C-33-A14-F454-E84-1-201-a.jpg) (https://ibb.co/j9rZ31Qq)
(https://i.ibb.co/bg39HTht/F906-D957-39-CA-4-DA7-9229-1-B9-A7-C7-E8-F82-1-201-a.jpg) (https://ibb.co/xSsTmWvZ)
(https://i.ibb.co/wNCXwzBG/53-AA7584-E1-D2-4-A5-E-A375-7239539-C42-D2-1-201-a.jpg) (https://ibb.co/yn51YQdv)
(https://i.ibb.co/gbBBwthW/7-C7-EC833-F559-4-A3-B-816-B-38-D7-BAEDF48-E-1-201-a.jpg) (https://ibb.co/5Xffvswj)

Title: Re: Kay Model 777 Reverberation
Post by: dbishopbliss on October 23, 2025, 07:59:43 pm

One other thing... if you plug the cable from the footswitch into you amp (yes, you read that correctly) it sounds like an overdrive/fuzz pedal. It's a cool effect but I'm not sure why it does that. Any thoughts?