FDP Forum / THD Hot Plate: Has anyone ever seen an actual schematic?/ 3 messages in thread.

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Sep 20th, 2017 10:26 AM        

I have seen what I believe are authentic schematics for several attenuators, but never a Hot Plate.<br /> 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.<br /> <br /> I have seen and/or have schematics for:<br /> Dr Z Air Brake and Brake-Lite<br /> Scholz Rockman Power Soak<br /> Marshall Power Brake<br /> Weber MASS and Mini MASS and Micro MASS and etc.<br /> Weber 200 watt kit attenuator.<br /> <br /> Thanks in advance.<br /> <br /> Tags for search: attenuator soak airbrake air-brake brake hotplate hot plate MASS<br />

Mike DeTorrice

Contributing Member


Sep 22nd, 2017 01:34 PM        

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

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

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