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FDP Forum / Miscellaneous and Non-Fender Topics / THD Hot Plate: Has anyone ever seen an actual schematic?



Sep 20th, 2017 10:26 AM   Edit   Profile  

I have seen what I believe are authentic schematics for several attenuators, but never a Hot Plate.
The closest I have gotten is a THD Univalve schematic which claims to have a Hot Plate built in. In that case, it's basically a huge pot resistive type.

I have seen and/or have schematics for:
Dr Z Air Brake and Brake-Lite
Scholz Rockman Power Soak
Marshall Power Brake
Weber MASS and Mini MASS and Micro MASS and etc.
Weber 200 watt kit attenuator.

Thanks in advance.

Tags for search: attenuator soak airbrake air-brake brake hotplate hot plate MASS

Mike DeTorrice
Contributing Member


Sep 22nd, 2017 01:34 PM   Edit   Profile  

I have an 8 ohm THD Hot Plate and it's great, but no schematic for it. I think THD mentioned it utilized a mixture of both resistive and inductive elements to achieve it's attenuation.

It has high and low tone compensation switches and uses light bulb elements as a noise reduction circuit, which is switchable in or out.

There are two speaker out jacks and a line out with it's own control.

Contributing Member

So. Cal. USA

Sep 22nd, 2017 01:58 PM   Edit   Profile  

I did some searching in my usual places but came up empty.

FDP Forum / Miscellaneous and Non-Fender Topics / THD Hot Plate: Has anyone ever seen an actual schematic?

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