[The Monkey]

Does anyone know how many conductors are used in the stock Grado cables?

 

[Joshatdot]

SR60's use 3 conductor, SR80's and above use 4 conductors, IIRC.

 

[The Monkey]

Quote:

Originally Posted by Joshatdot /img/forum/go_quote.gif SR60's use 3 conductor, SR80's and above use 4 conductors, IIRC.

Cool, thanks. Can anyone else confirm?

 

[lcp12345]

I want to know as well.

The Monkey,
Are you going to terminate your grado in balance config?

 

[The Monkey]

Quote:

Originally Posted by lcp12345 /img/forum/go_quote.gif I want to know as well. The Monkey, Are you going to terminate your grado in balance config?

If the HF-1 has 4 leads, then I am seriously considering it. But if only 3, I'm not in the mood to do an entire rewiring job.

 

[dip16amp]

I cut the TRS plug off my SR225 and RS1. They both have four wires. I put a 5 pin XLR connector on them for balanced connection to my amps. I think all Grados have four wires to the plug.

 

[threEchelon]

Quote:

Originally Posted by dip16amp /img/forum/go_quote.gif I cut the TRS plug off my SR225 and RS1. They both have four wires. I put a 5 pin XLR connector on them for balanced connection to my amps. I think all Grados have four wires to the plug.

You only need a 4-pin XLR. I believe the pinout for headphones is:

1: L+
2: L-
3: R+
4: R-
Tab: Shield

 

[dip16amp]

Some people use two 3-pin XLR connectors, some use a 4-pin XLR connector, there is an AES standard (AES14-1992) for 5-pin XLR connector with the following pinout.

Pin 1 Ground
Pin 2 Left Positive
Pin 3 Left Negative
Pin 4 Right Positive
Pin 5 Right Negative

I first considered a 4-pin XLR connector but wanted the ground pin for an unbalanced adapter to the amp. The tab shield is not a reliable ground return path.

 

[The Monkey]

Quote:

Originally Posted by dip16amp /img/forum/go_quote.gif I cut the TRS plug off my SR225 and RS1. They both have four wires. I put a 5 pin XLR connector on them for balanced connection to my amps. I think all Grados have four wires to the plug.

Thanks, I have added them to my list with a question mark re all Grados.

 

[dip16amp]

I also cut the TRS female connector off the 15 foot extension cable that comes with the RS1 and it has four wires in it.

 

[lcp12345]

Wow! It looks great. I am considering to re-term my MSPRO in this case.

 

[threEchelon]

Quote:

Originally Posted by dip16amp /img/forum/go_quote.gif Some people use two 3-pin XLR connectors, some use a 4-pin XLR connector, there is an AES standard (AES14-1992) for 5-pin XLR connector with the following pinout. Pin 1 Ground Pin 2 Left Positive Pin 3 Left Negative Pin 4 Right Positive Pin 5 Right Negative I first considered a 4-pin XLR connector but wanted the ground pin for an unbalanced adapter to the amp. The tab shield is not a reliable ground return path.

Meh. No company I know of has ever made a headphone or amp with a 5-pin XLR and very few head-fiers use them if any at all. A shield isn't that important for a headphone cable anyways.

IMO, the best set of output jacks would be 2 3-pin combo jacks or 2 3-pin combo jacks and a 4-pin jack.

I recable my headphones to 4-pin XLR's, btw.

 

[DaKi][er]

Nice to hear, I'll be doing my MS-2's with 4pin XLR for a balanced dynahi setup I've been putting together
(just need a few more parts, I got 2 going in a regular unbalanced and just need some opamps, vregs and caps for the other 2)

 

[The Monkey]

Quote:

Originally Posted by DaKi][er /img/forum/go_quote.gif Nice to hear, I'll be doing my MS-2's with 4pin XLR for a balanced dynahi setup I've been putting together (just need a few more parts, I got 2 going in a regular unbalanced and just need some opamps, vregs and caps for the other 2)

Cool, if you wouldn't mind please confirm that the MS-2 has 4 leads after you do the surgery.

 

[Zorander]

I had a quick look at my re-terminated MS-2 plug and I'm pretty sure I saw 4 wires in there (1 white, 1 red and 2 blue wires). The two wires are for ground (and bunched up very closely together to almost look like 1 wire).

Cheers!