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Grado Headphone Cables -- 4 Conductors or 3?

post #1 of 15
Thread Starter 
Does anyone know how many conductors are used in the stock Grado cables?
post #2 of 15
SR60's use 3 conductor, SR80's and above use 4 conductors, IIRC.
post #3 of 15
Thread Starter 
Quote:
Originally Posted by Joshatdot View Post
SR60's use 3 conductor, SR80's and above use 4 conductors, IIRC.
Cool, thanks. Can anyone else confirm?
post #4 of 15
I want to know as well.

The Monkey,
Are you going to terminate your grado in balance config?
post #5 of 15
Thread Starter 
Quote:
Originally Posted by lcp12345 View Post
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.
post #6 of 15
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.
post #7 of 15
Quote:
Originally Posted by dip16amp View Post
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
post #8 of 15
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.
post #9 of 15
Thread Starter 
Quote:
Originally Posted by dip16amp View Post
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.
post #10 of 15
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.
post #11 of 15
Wow! It looks great. I am considering to re-term my MSPRO in this case.
post #12 of 15
Quote:
Originally Posted by dip16amp View Post
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.
post #13 of 15
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)
post #14 of 15
Thread Starter 
Quote:
Originally Posted by DaKi][er View Post
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.
post #15 of 15
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!
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