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Old 19th February 2012, 03:12 AM   #11
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Join Date: Dec 2011
When comparing output transformers it is good to know the inductance with no D.C. and at the desired idle current (spec separately for each primary impedance tap if more than one). Seeing that the inductance falls very little with current (generally 10% or less, the lower the better) tells you that the current is not causing a saturation problem.
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Old 19th February 2012, 03:37 AM   #12
chrish is offline chrish  Australia
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Location: Sydney
Since you are going to have a separate sub and amp take care of the lower frequencies, the moderately priced Edcor units are well suited, like this EDCOR - GXSE15-8-5K or even this if you want low price EDCOR - XSE15-8-5K

They also have power transformers EDCOR - XPWR Series Tube Power Transformers

They are made to order, so there is a 4-6 week wait on them I believe.
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Old 19th February 2012, 06:53 PM   #13
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Location: Atlanta, GA
The Tubelab website was exactly what I've been looking for. I love how someone can go there not knowing much about the quality of certain components and brand names and be able to fully populate a working amp.

Chrish, I was already considering the Edcors because of the sub... good call. But I have a few questions:
1.) Can I do a direct split of my analog source output and send one set to the sub amp and one to the tube amp?
2.) Will it cause load issues on either amp?
3.) Will putting a cap on the tube amp input (for low freq. attenuation) color the sound in an adverse way?
4.) Will putting a cap increase the tube amp's apparent gain (i.e. since it will not have to amplify the low frequencies)?

Thank you again,
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