[Phil_Hobby]

If I want to place my Jeff Korneff 45SE amp directly behind my horn speakers, I would need to get a 7-meter interconnect between my NOH and the amps.  Will the NOH be able to drive long interconnect?  My sources are Philips SACD1000, Aesthetix IO Phono, Fisher 200B tuner.  I would like to know before getting the long interconnects.
Thanks,
Phil

[zybar]

I haven't heard of 7M ic's with a passive, but I guess it is best to wait for John to comment.

George

[Phil_Hobby]

The minimum distance (if I move the rack closer) would be 5-meter long for the interconnects.   The speakers are on the short end of the room while the equipment rack is on the long end, so it's either long speaker cables or long interconnects.  I don't know what's better.

[zybar]

Phil,

I beleive long cables in this case is better than long ic's.

I am sure John will clear things up.

George

[John Chapman]

Hello!

7M is getting long. As a fan of short cables I'd reaarange my gear to get it down no matter what pre-amp I had! I know this is not always possible though....

It will come down to gain in the system and the sources impedances- which will determine how much drive you will have after the NOH. As you turn the volume down the output impedance goes down and it is easier to drive long cables. I have tested this on my analyser and it behaves as expected. Fortunately the output impedance drops quite fast (log function) so after you get down 4 or 5 steps from the top it is going down fast. If you needed to use the +6db gain option (stepping up the signal instead of stepping down) I think that it would not be recomended to push the edge of cable lengths and other impedance issues - although it is fine with typical setups.

In your case you have efficient speakers and the 45 amps (my fav tube if the speakers are up to the task of running on 1W or so!). Likely they drive the speakers fine. If you can get a handle on how far down in level you'd be from unity gain at for a loud listenning level then we can confirm that you'll be stepping down and getting the drive you'd need.

Also if you could dig up the output impedances for the sources and post them we can go through that side of things. I usually would scope them out but am in catch-up mode now and have trouble finding time!

Another big factor is the capacitance of the cables. If you use an ultra low capacitance cable then it 'looks' like a shorter cable from the pre-amps point of view.


How about splitting up the lengths a bit so both speaker cables and interconnects are spanning the distance needed?


Many Thansk!

John

[Phil_Hobby]

Thanks for all your inputs, and based on the suggestions I am staying with the currently configuration using short ics and long speaker cables.