Tape Trail

RE: Thanks Dave

99.144.176.199

In Reply to: RE: Thanks Dave posted by Dave Pogue on February 09, 2008 at 04:47:11

Way back when in the days of the early Ampex tube machines, some egineer used logic to make the pin asignments for the XLR. Highest potential would be pin 3 (hot or positive signal) with lowest potential being pin 1 (ground or earth).

This was used for years. Otari and others in the pro audio industry followed this so Pin 3 was always hot (same as the center pin on an RCA Plug).

I don't know the details on when things began to change, but some of the Japanese companies began offering XLR connections with Pin 2 as hot. On all new gear that is the current standard; pin 2 hot.

So if you are using any pin 3 hot pro audio gear you either need to make a pin 3 to pin 2 converter cable or resolder and move the wires in side the deck (which is what I have done).

If you do not do this, then everything you play on that deck will be 180 deg. out of phase. When the woofer cones should be pushing, they will be sucking, etc. sound stage colapses, and imaging is very poor.

On some pre amps there is a phase invert switch; if you have this you can use it as well.

best

John

Follow Ups:

Thanks John. So if I am not using pro gear... - joeljoel1947 13:00:25 02/09/08 (0)
RE: Thanks Dave - Dave Pogue 09:09:29 02/09/08 (0)

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.