Schematic for 285502A4 balanced output hybrid or anyone making a clone?

[alchematic]

Hi all.  I have a 6056 with G series center section upgrades. I have a couple of those hybrid amp cards. 285504A4 output and 285504A3 input.  Looking to see if anyone except SSL makes these or has a schematic.  Thanks!

[pascal.verdet]

Hi,
May can help you
Cheers,
Pascal

[pascal.verdet]

Module picture.
May be done with 5532 opamp.

Please keep me inform.
Cheers
Pascal

[waltzingbear]

or could be done with DRV134, or THAT Ingenius chip.

When SSL designed the module, there was no other option, now the capabilities are very well delivered in the chips mentioned (THAT being slightly better to my senses). I would suspect its what SSL uses in the 900 and such.

A business opportunity? Or ask Brian Roth to make that one also. he already makes the "same" replacement card for the Otari MX-70/80 tape machines. Same parts, would be just a different circuit board.
http://www.recordingservicesandsupply.com/item/otari/output-driver-replacement-for-/lid=44716247

Cheers
Alan

[alchematic]

Thanks for the replies. I will contact Brian to see if he is interested in making this. SSL wants $60 for them. I would like a board like the one Brian does for the otari with sockets and better chips. Still need a schematic for them if any one has it.

[alchematic]

I looked at the THAT balanced driver and reciever chips. Very nice!

[pascal.verdet]

Hi,

If you're really interested,
and that the quantity is enough, I can make the circuit.

Cheers,
Pascal
http://pascal-verdet.com