Edcor power transformer for Champ clone

General discussion area for tube amps.

Moderators: pompeiisneaks, Colossal

Post Reply
User avatar
xtian
Posts: 7263
Joined: Mon Apr 19, 2010 8:15 pm
Location: Chico, CA
Contact:

Edcor power transformer for Champ clone

Post by xtian »

I'm planning a 5f1 clone, and am trying to spec Edcor trannies. The OT is easy: http://www.edcorusa.com/products/483-xse10-8-8k.aspx

But I'm having trouble with the PT. Choices here: http://www.edcorusa.com/category/72-xpwrseries.aspx

Closest looks like this one: http://www.edcorusa.com/products/681-xp ... 0-240.aspx

but it's rated at 200mA instead of the 70mA that the recommended Hammond 290AX is.

Is there a good Edcor choice for a Champ?
I build and repair tube amps. http://amps.monkeymatic.com
User avatar
Structo
Posts: 15446
Joined: Wed Oct 17, 2007 1:01 am
Location: Oregon

Re: Edcor power transformer for Champ clone

Post by Structo »

When I was looking at the Edcor offerings I had a hard time figuring out what was what on their website.

I had trouble seeing any PT that provided over 200ma of current.
Seems as if most of what they sell is low wattage stuff.
Tom

Don't let that smoke out!
User avatar
Dr-Joned
Posts: 224
Joined: Thu Dec 13, 2007 9:43 pm
Location: The Great South, USA

Re: Edcor power transformer for Champ clone

Post by Dr-Joned »

How about the http://www.edcorusa.com/products/640-xpwr047_120.aspx

It only 10 volts off as far as the HT is concerned. The one that you found doesn't have filament or 5 volt taps. This is also x mounting (stand up) and not lay down like a champ if that matters.
I Think I Think Too Much !
User avatar
M Fowler
Posts: 14036
Joined: Wed Jan 16, 2008 2:19 am
Location: Walcott ND

Re: Edcor power transformer for Champ clone

Post by M Fowler »

My Edcor PT for the 80w Express and Rocket were 450mA 8)

You need to ask the Edcor people they can steer you to the right transformer ask for Brian.

Mark
User avatar
ToneMerc
Posts: 3480
Joined: Sun Apr 26, 2009 3:55 pm
Location: East Coast

Re: Edcor power transformer for Champ clone

Post by ToneMerc »

xtian wrote:I'm planning a 5f1 clone, and am trying to spec Edcor trannies. The OT is easy: http://www.edcorusa.com/products/483-xse10-8-8k.aspx

But I'm having trouble with the PT. Choices here: http://www.edcorusa.com/category/72-xpwrseries.aspx

Closest looks like this one: http://www.edcorusa.com/products/681-xp ... 0-240.aspx

but it's rated at 200mA instead of the 70mA that the recommended Hammond 290AX is.

Is there a good Edcor choice for a Champ?

http://www.edcorusa.com/products/634-xpwr041_120.aspx

This is similar to the Heyboer upright piece that I'm using in an 5F2 parallel 6v6/6l6 harp amp. I'm 20V hotter, 30ma heavier in HT current and .5A heavier on the other windings. That Edcor piece has plenty of gumption for an 5F1 circuit without being overkill.

If you ever decide add another socket or if you wanted to run a single larger tube, you will have the extra current. 120mA will allow you to run two 6v6's, one or possibly two 6l6s. The stock 60-70mA spec won't cut it with a single larger (6L6, El34, KT66)tube or parallel tubes.

The only caveat is that it's an upright mount, not laydown like the tradional Champ.

TM
User avatar
xtian
Posts: 7263
Joined: Mon Apr 19, 2010 8:15 pm
Location: Chico, CA
Contact:

Re: Edcor power transformer for Champ clone

Post by xtian »

ToneMerc wrote:The only caveat is that it's an upright mount, not laydown like the tradional Champ.
So if you get a standard narrow-panel Tweed chassis, it won't fit the hole, right?
I build and repair tube amps. http://amps.monkeymatic.com
User avatar
ToneMerc
Posts: 3480
Joined: Sun Apr 26, 2009 3:55 pm
Location: East Coast

Re: Edcor power transformer for Champ clone

Post by ToneMerc »

No, sure won't.

TM
Post Reply