SS reverb driver

smoguzbenjamin · February 21, 2004, 02:15:01 PM

Hey all

has anyone got a link to a SS reverb tank driver? I cooked one up myself, but I need something to compare to to see if I have everything I need in there. Cheers!
Ben

toneless · February 21, 2004, 07:48:42 PM

Perhaps you can start searching from those two sites.Generalguitar gadgets has a nice reverb project with lots of links and additional info.

http://www.generalguitargadgets.com/v2/
http://www.accutronicsreverb.com/

Peter Snowberg · February 21, 2004, 08:03:56 PM

The driver all depends on the tank you are driving. An 8 ohm driver and a 1.5K driver will be very different.

What is the number of your tank?

-Peter

smoguzbenjamin · February 22, 2004, 04:28:14 AM

See that's the whole problem :mrgreen: The entire tank is anonymous. I can measure the coil's DC resistance but for the rest I can hardly give anuy specs. Hang on and I'll do some measuring

smoguzbenjamin · February 22, 2004, 06:00:38 AM

Coil 1 DC resistance: 2.5 ohms
Coil 2 DC resistance: 281 ohms

I'm guessing that the green coil is in and red coil is out, but in that case it has a tiny input impedance and a huge output impedance... Does that make sense? Anyway, it has 2 springs, not 2 sets of 2 intertwined, which are 7" long when stretched. No numbers anywhere. It came out of an old keyboard amp which I could have to scavenge parts from.

Peter Snowberg · February 22, 2004, 06:40:16 AM

Great!

Judging by the resistances, that's probably an 8 ohm input (or close enough) and maybe a 3K output. In Accutronics lingo, that tank would probably be a "1AB" part number. This is very cool.

If I were you, I would use a NE5532 or LM386 as the driver. Of course you (probably) don't want this driver to be overdriven so if you use an LM386, keep the gain low.

The signal recovery could be done with the recovery part of any of the popular schematic floating around. The Stage Center recovery & mixing stages would be a good one to look at.

You shouldn't have much trouble interfacing that tank.

Take care,
-Peter

smoguzbenjamin · February 22, 2004, 06:48:27 AM

Sounds good Peter, but how'd you get 3K out of 281 ohms? That's a multitude of 10! LM386 at its normal gain of 20 should do the trick I guess.

Oh well I have a breadboard don't I

Your name's going on the backplate of my amp too, Peter!

Peter Snowberg · February 22, 2004, 07:04:35 AM

You can't translate resistance to impedance directly because there are all kinds of other factors involved, but Accutronics has the DC resistance of their tanks listed on their web site.

http://www.accutronicsreverb.com/ioic.htm

You may find this page very helpful:
http://www.accutronicsreverb.com/schemat.htm

An LM386 at gain=20 should do you just fine.

Take care,
-Peter

smoguzbenjamin · February 22, 2004, 07:11:31 AM

Whoah! That's all the info I need! Thanks peter! :mrgreen: Oh yeah I'm gonna have some fun with this :mrgreen:

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SS reverb driver