MagneQuest/Peerless Forum

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MagneQuest/Peerless Forum

TM 220C

24.174.46.195

Several years ago I bought a special pair of TM-220C PP transformers from you. I've noticed that I can't find a paper in the boxes the transformers came in (probably lost them) that identifies the color code of the leads. Primaries are red, blue, brown, and the secondaries are red, blue, black, yellow, green, brown. Could you please help me identify them? BTW, in the post that you first described these puppies to me, you stated that primaries have a nominal impedance of 4K, would that be the same thing as 8K plate to plate? Here's a link to your post below.

twystd

http://db.audioasylum.com/cgi/m.mpl?forum=magnequest&n=5237& (Open in New Window)

Follow Ups:

TM-220C hookup - mqracing 12:23:30 05/21/09 (1)
Primary is 4,000 ohms CT:
blue goes to plate of tube #1
red is B+ (or AC ground)
brown goes to plate of tube #2

Secondary:
#5=green
#6=yellow
#7=brown
#8=red
#9=blue
#10=black

for 16 ohms strap 7-8 and connect speaker to 5&10
for 8 ohms strap 7-8 and connect speaker to 6&9
for 4 ohms strap 5-8 & 7-10 and connect speaker to 5&10
for 2 ohms strap 6-8 & 7-9 and connect speaker to 6&9
(leads 9 and 10 are the preferred secondary ac ground)

Builder of MagneQuest™ & Peerless™ transformers since 1989

Edits: 05/21/09
- Thank you Mike! (nt) - twystd 12:54:49 05/21/09 (0)
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