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TedNugent
TedNugent's picture

What is this modification? Preamp in and out? HELP!

Hi guys,

I've got a late 70's 210 HD130 that's been modded a bit. There are two 1/4 inch inputs drilled into what I assume is the preamp section as Preamp In and Preamp Out are clearly engraved in the metal plate. See picture. So is this for an effects unit or something? I've never been the electronics/mod guy and am only now learning the basics on that side of things. I'm not going to plug anything into there until I at least know what it's for.

In other news, the sound of the amp is identical to my 212 65 which is all original and also late 70's but the big boy came with the reverb crackling so bad it's unusable and also the ground removed from the plug. Hence my reservations about plugging anything into the custom input jacks as removing the ground is quite obviously f'd.

Having said all that, the amp sounds great so long as reverb is off.

Grateful for any ideas or suggestions.

SP

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RD112
RD112's picture

Maybe send a few pictures of

Maybe send a few pictures of the inside of the chassis.
Looks like a McGyver version of the 100mV insert jack on the RD and RP models?

TedNugent
TedNugent's picture

Thanks - I'll post some pics

Thanks - I'll post some pics of the innards when I figure out how to dismantle everything safely. I err on the side of caution these days and I know it can be lethal to touch something that's still got a charge in it.

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