NOH with a 8Kohm poweramp..?

CH · « **on:** 30 May 2004, 11:43 pm »

Hello All,

I'm tempted to try a NOH in my system, but will the input-impedance of my Ice-powerbased poweramp be a problem..?
8Kohms according to the specs..

Thanks,
CH

zybar · « **Reply #1 on:** 31 May 2004, 12:13 am »

Which ICE based amp do you have?

George

CH · « **Reply #2 on:** 31 May 2004, 12:45 am »

I have Embla Power 2.1.
www.emblaaudio.no

Marbles · « **Reply #3 on:** 31 May 2004, 01:13 am »

CH

I have the TX102 trannies (same as NOH) and a 10 Kohm input amp.

If you have source components that put out 2.0 volts or more, the NOH should be just fine.

JoshK · « **Reply #4 on:** 31 May 2004, 02:12 am »

8Kohms input impedance! Ufda!

John Chapman · « **Reply #5 on:** 31 May 2004, 04:06 pm »

Hello!

I have done some testing in the past bit using lowish impedances like 7K or 8K. Once you get the volume level down a few steps from the top (where the effect of the tx102 lowering it's output impedance kicks in) the low impedances are not a problem. You will not want to match a really high output impedance source with that low amp input impedance and also I would not try and use the +6db gain option with low amp input impedances either.

Basic rule is if you have a decent level of gain in the system and a lowish output impedance source (say less than 400 ohms or so) then it should be fine. It is hard to apply direct numbers since one number affects the other - ie. a higher output imp source might be o.k. if you have lots of gain and will be running the tx102's set well below it's top level settings.

Many Thansk!

John Chapman
www.bentaudio.com