Output transformers - which model? - PK - K&K Audio / Lundahl Transformers

K&K Audio / Lundahl Transformers

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Output transformers - which model?

Hi,
I have a few questions regarding the use of output transformers that I hope you will respond to:
I would like to use a Behringer DCX 2496 as a digital crossover for my 2-way hornsystem in order to play around with different crossover frequencies and slopes . Thus, the chain of components will be:
Philips DVD963SA (digital out) => AES/EBU input of the Behringer => 4 analog outputs (LOW, left and right, and HIGH left and right) connected to two stereo power amps.
In order to control the volume I will use a 4-channel attenuator between the Behringer and the power amps.
My power amps are very sensitive to ground loops and I have heard that transformers can be use to eliminate ground loops effectively, so now I consider using tranformers between the volume control and the Behringer.
Just to add further information, the power amps are semi-digital ICE-power based amps from Acoustic Reality (the one for bass have an input impedance of 8 kOhm and the one for the mid/high section has an input impedance of 55 kOhm). I intend to cross somewhere between 150 and 300 Hz.
However, I know nothing about output transformers. So here are a few questions:
1. The advantage (as I understand it) of using transformers is the elimination of ground loops. Are there any disadvantages of using transformers in this application â€“ except that I will have to buy them of course:-)? And what will they do to the sound?
2. Will the impedances vary accross frequency when using transformers?
3. Which transformers from Lundahl would be the best to use for my application?
I thank you a lot in anticipation and hope to hear from you!
Regards
Peter

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Topic - Output transformers - which model? - PK 08:40:49 06/26/05 (4)

Re: Output transformers - which model? - KevinC 20:34:27 06/28/05 (3)

Re: Output transformers - which model? - pk 07:06:18 06/29/05 (2)

Re: Output transformers - which model? - KevinC 09:34:37 06/29/05 (1)

Thanks a lot for your reply, Kevin! (nt) - PK 23:47:31 06/29/05 (0)

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