600/600 output transformers

mobyd · 7th July 2009, 08:48 PM

I have an ongoing need for cost effective 600/600 transformers for zone isolation in distributed audio installations. There are several choices -
Midcom modem transformers: cheap as chips, perfectly adequate for voice grade media feed applications but run out of steam above 0dBm below 100Hz.
Jensen & Lundahl transformers: Fine for budget no issue top of the line installs.....but this almost never happens - budget always IS the issue.
I'm looking for something in between.
OEP products seem adequate, but they seem closely tied to RS and Farnell, who are my suppliers of last resort (I prefer not to buy my bottle of whisky at "per nip" prices).
Any other suggestions, folks ?.
M
(A midcom with 4 times as much core would do fine)

KSTR · 7th July 2009, 09:34 PM

Why 600:600? Are you running kilometers of 600ohms cables, and have 600ohms sources and loads only? I never saw a need for that 600 ohms stuff from the ancient telephone days.

You could check out Neutrik's and and Sowter's, but then again those aren't precisely cheap.

- Klaus

sharpi31 · 7th July 2009, 09:35 PM

Monacor and Edcor make less expensive 600:600 transformers:

Monacor LTR-110

Edcor XSM600/600

The Edcor is $13 per unit! I haven't tried either, but read about positive experiences with both by others on this forum

gtforme00 · 7th July 2009, 09:44 PM

How about Edcor or Sowter?

http://www.edcorusa.com/Products/Sho...ct.aspx?ID=282

http://www.sowter.co.uk/acatalog/SOW...LANCERS_2.html

-David

mobyd · 8th July 2009, 08:27 AM

Quote:

Originally posted by gtforme00
How about Edcor or Sowter?

http://www.edcorusa.com/Products/Sho...ct.aspx?ID=282

http://www.sowter.co.uk/acatalog/SOW...LANCERS_2.html

-David

Thanks, the Edcors look just the berries - I've pinged them an order and look forward to trying them out.
I've used Sowter before and whilst not cheap, the results were good. Hideously expensive British mail makes them unusable these days.
M

dangus · 9th July 2009, 06:51 AM

Salvage them from junked mixing boards?

Get them custom wound by a local transformer manufacturer? It can be cheaper than you'd expect.
Here's a company I ordered power transformers from in the past, (not certain if they do AF transformers too):
Best Coil Ltd

7th July 2009, 08:48 PM	#1
mobyd diyAudio Member Join Date: Sep 2004 Location: Auckland	600/600 output transformers I have an ongoing need for cost effective 600/600 transformers for zone isolation in distributed audio installations. There are several choices - Midcom modem transformers: cheap as chips, perfectly adequate for voice grade media feed applications but run out of steam above 0dBm below 100Hz. Jensen & Lundahl transformers: Fine for budget no issue top of the line installs.....but this almost never happens - budget always IS the issue. I'm looking for something in between. OEP products seem adequate, but they seem closely tied to RS and Farnell, who are my suppliers of last resort (I prefer not to buy my bottle of whisky at "per nip" prices). Any other suggestions, folks ?. M (A midcom with 4 times as much core would do fine)

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7th July 2009, 09:34 PM	#2
KSTR diyAudio Member Join Date: Jul 2007 Location: Central Berlin, Germany	Why 600:600? Are you running kilometers of 600ohms cables, and have 600ohms sources and loads only? I never saw a need for that 600 ohms stuff from the ancient telephone days. You could check out Neutrik's and and Sowter's, but then again those aren't precisely cheap. - Klaus

7th July 2009, 09:35 PM	#3
sharpi31 diyAudio Member Join Date: Oct 2005	Monacor and Edcor make less expensive 600:600 transformers: Monacor LTR-110 Edcor XSM600/600 The Edcor is $13 per unit! I haven't tried either, but read about positive experiences with both by others on this forum

7th July 2009, 09:44 PM	#4
gtforme00 diyAudio Member Join Date: Oct 2004	How about Edcor or Sowter? http://www.edcorusa.com/Products/Sho...ct.aspx?ID=282 http://www.sowter.co.uk/acatalog/SOW...LANCERS_2.html -David

9th July 2009, 06:51 AM	#6
dangus diyAudio Member Join Date: May 2004 Location: Vancouver Island	Salvage them from junked mixing boards? Get them custom wound by a local transformer manufacturer? It can be cheaper than you'd expect. Here's a company I ordered power transformers from in the past, (not certain if they do AF transformers too): Best Coil Ltd

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