Cheap SE output transformers - Page 2

valveitude · 26th January 2006, 09:34 PM

Dang !!!

If these guys make a decent xfrmr, they will be the diyer's new best friend. I looked around the site and found they offer interstage, SE, PP, ribbon mic, and attenuater Xfrmrs...all VERY resonably priced. And if that isn't enough, they offer a custom service with no setup fee, and no minimum order,

Did I say Dang !!!

pedroskova · 26th January 2006, 10:20 PM

Quote:

Originally posted by tubelab.com
I don't know if the PP transformers can take the voltage of the 845. I don't know where you intend to operate them.

...I don't either.

I vascillate between the current low voltage "fad" of around 450VDC and a more respectable 750VDC. Anything over that becomes too expensive for components that are reasonably spec'ed for safety.

FWIW, I've tried the Edcor 10k:600 transformers(their cheapest version), and they pale in comparison to similarly priced power toroids...although a number of people have given positive reviews of them.

2004ex · 26th January 2006, 11:01 PM

There is a comparison between an Edcor and a Hammond 3.4K PP transformer.
Looks promising. The Edcor site does not list the net weight of the transformers though..

http://www.angelfire.com/electronic/...oblock_UL.html

ivegotmono · 26th January 2006, 11:29 PM

I think I'll buy a couple of the 8000 ohm jobs to hook up to my (borrowed from a sears console) el84 se el cheapo amp. Theyr'e only $15.?? each. Anything would be much better than the ones that it has.

leadbelly · 26th January 2006, 11:40 PM

I wouldn't be surprised if the 25W SE for $27 were the hot ticket for an EL84SE amp on a budget. They should get lower than 70Hz if just an EL84 is driving them.

gja · 27th January 2006, 08:18 AM

Thank you everyone for your posts!Can´t wait for TUBELAB´s test results....
cheers to all.

atarashi · 27th January 2006, 09:29 AM

or you could try:
http://www.welter-electronic.de/baut...ebertrager.htm

select Standard, scroll down, the Ü/ET-2 might be the one if you look for a cheap opt.

btw. their HE-ET 30 (look under High End) is not bad, and the price is very good!

regards
Michael

Geek · 27th January 2006, 11:17 AM

I got my pair of XSE15-8-5K today. Unit construction is great.

On a 3 watt 6EW7 amplifier, we're talking 19Hz >>20KHz (sig gen doesn't go higher) with 5dB NFB and 25Hz >>20KHz with zero NFB.

Nothing wrong with this tranny for SE.

tubelab.com · 27th January 2006, 01:48 PM

Quote:

On a 3 watt 6EW7 amplifier, we're talking 19Hz >>20KHz (sig gen doesn't go higher) with 5dB NFB and 25Hz >>20KHz with zero NFB.

This was measured at full (3 watt) power? How much DC current?

These are good numbers for a $18 transformer. I want mine, NOW!

Bas Horneman · 27th January 2006, 01:53 PM

Quote:

On a 3 watt 6EW7 amplifier

Geek ..got a schematic for us/me?

Thanks.

26th January 2006, 09:34 PM	#11
valveitude diyAudio Member Join Date: Apr 2005 Location: Naches,WA	Dang !!! If these guys make a decent xfrmr, they will be the diyer's new best friend. I looked around the site and found they offer interstage, SE, PP, ribbon mic, and attenuater Xfrmrs...all VERY resonably priced. And if that isn't enough, they offer a custom service with no setup fee, and no minimum order, Did I say Dang !!! __________________ Experience is a wonderful thing. It enables you to recognize a mistake when you make it again.

26th January 2006, 11:29 PM	#14
ivegotmono diyAudio Member Join Date: Nov 2005 Location: maryland	I think I'll buy a couple of the 8000 ohm jobs to hook up to my (borrowed from a sears console) el84 se el cheapo amp. Theyr'e only $15.?? each. Anything would be much better than the ones that it has. __________________ steve

26th January 2006, 11:40 PM	#15
leadbelly diyAudio Member Join Date: Dec 2002 Location: Calgary, Alberta	I wouldn't be surprised if the 25W SE for $27 were the hot ticket for an EL84SE amp on a budget. They should get lower than 70Hz if just an EL84 is driving them. __________________ Aerodynamics are for people who can't build engines. Enzo Ferrari

27th January 2006, 08:18 AM	#16
gja diyAudio Member Join Date: Nov 2005	thanks Thank you everyone for your posts!Can´t wait for TUBELAB´s test results.... cheers to all.

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26th January 2006, 11:01 PM	#13
2004ex diyAudio Member Join Date: Jun 2004 Location: California	There is a comparison between an Edcor and a Hammond 3.4K PP transformer. Looks promising. The Edcor site does not list the net weight of the transformers though.. http://www.angelfire.com/electronic/...oblock_UL.html

27th January 2006, 09:29 AM	#17
atarashi diyAudio Member Join Date: Jun 2005 Location: Vienna	or you could try: http://www.welter-electronic.de/baut...ebertrager.htm select Standard, scroll down, the Ü/ET-2 might be the one if you look for a cheap opt. btw. their HE-ET 30 (look under High End) is not bad, and the price is very good! regards Michael

27th January 2006, 11:17 AM	#18
Geek diyAudio Member Join Date: Sep 2004	I got my pair of XSE15-8-5K today. Unit construction is great. On a 3 watt 6EW7 amplifier, we're talking 19Hz >>20KHz (sig gen doesn't go higher) with 5dB NFB and 25Hz >>20KHz with zero NFB. Nothing wrong with this tranny for SE.

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