[JW]

Is the Bourns 51 series 600 ohm T pad the only game in town? Imagine you were doing a 4 channel API with these. Like I am. That's around$100 just for that part. 1 T pad = more than the power transformer. Thanks Antek @$17.00

Anyway, anyone come across an alternative part? Or is it just too custom?

BTW, this part, the Bourns 51 T pad for the 1176 input I noticed went scratchy very quickly. I was like, cool I have a "vintage" 1176 now. Not. It's got new caps, I dunno. Maybe I should measure for DC on it or something. . . .

[shabtek]

One k log pot works in a pinch

[Rob Flinn]

If you must have a t pad speak to brett at blore edwards.  He has cheaper ones.

[abbey road d enfer]

Anyway, anyone come across an alternative part? Or is it just too custom?

the only notable feature ofa T-pad is that its input and output impedances are constant, so they can be inserted between lines that nned to be matched. It's a sequel of the POTS, where lines of several hundred miles had to be perfectly matched.
When audio equipment was designed by telephone engineers, the practice persisted, although only the side that connected to the world needed to match.
A long time ago matching was abandoned at the profit of bridging, where a low impedance source meets a higher (>10x) impedance receiver.
There is no objective reason for using a T-pad in a 1176, except vintage-correctness.
Shabtek's suggestion is wise.

[mjrippe]

I believe group member Avdo was making them for a reasonable price.

[EmRR]

I don't know that any of them these days are a true T, none disconnect the shunt at full on so there's some loading still, but close enough for most things. 

Several other reports of going scratchy in 1176's, I think almost always shown to be DC on the pot, not a problem with the pot. 

[Whoops]

Is the Bourns 51 series 600 ohm T pad the only game in town?

Anyway, anyone come across an alternative part? Or is it just too custom?

No it's not "the only game in town", there's a nice alternative, it's on the White market here in the forum.
Cheers

http://www.avdaudio.com/catalog.htm?id=1372

[JW]

Ah nice. Thanks for that!

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