Source for Reverb Tank Transducers?

[telecaster]

Does anyone know of a source for just the reverb tank transducers? I know the labor to repair a tank is more than just buying new, but I am looking to customize to get a three-spring tank configuration that is not available new. Thanks, Chuck

[DRH1958]

Do you need a specific impedance value?

[g1]

As you inferred, the transducer would not be much less than the cost of some of the current tanks.
Why not mix and match parts from a couple cheap MOD tanks?
What exactly do you need?

[J M Fahey]

FWIW I make my own reverb tanks from scratch, but there is one component you won't easily find: tiny hollow cylindrical magnets, think hollow pencil leads or plastic ballpoint ink tanks cut in 1/8" lengths size; they must be hollow so you can epoxy a piece of .008 guitar string through them, which will twist the delay springs.

I had to order my own ferrite magnet dust pressing dies and then have some 5000 "cooked" at a magnet factory, the minimum order they would take.

So for a prototype you might experiment with parts recycled from dead tanks.

[telecaster]

I need 150 ohm input.
I'm trying to make what would be a 9BB3C1D for a TSL100 head - 3 springs and long decay. AES/CE sells an Accutronics 9BB2C1B - only medium decay and horizontal mount (I could make that part work by moving it to the top).

You guys got me thinking - I might have an old 4BB3C1D in my pile of dead reverb tanks. If I remember correctly, the output transducer is always the one that goes bad. I will check and see if I have one and if the input is good.

[Tom Phillips]

...horizontal mount (I could make that part work by moving it to the top)...

The mounting orientation I easy to change by rearranging the suspension springs that hold the inner tray to the tank's outer case. That's why there is that pattern of multiple holes.

[diydidi]

You can roughly estimate the coil impedance.
Measure the DC resistance, and also calculate the Reactance at 1khz (using inductance)
Then Z=√[(R*R) + (XL*XL)]

[g1]

You won't fit 3 springs onto a 2 spring transducer .
The delay length is a function of the spring length/guage.
A 150ohm impedance input transducer will read approximately 25 ohms DC resistance on your meter.
You'll need springs from any 9xx3xxx tank to get long delay.
Input & output transducer from any 9BB type tank.
Parts will not be interchangeable with different brand tanks.
See attached for numbering system info.

On a side note, some info on TSL reverb drive revisions here: Marshall TSL 100/122 reverb driver revisions | Electronic States