Most odd. I guess it could be a few things; it may be down to an odd acoustic effect in your room. It could be some kind of RF interference. It may be down to ethernet over mains devices (if you have these get rid ASAP - horrible things that can cause no end of issues with high end hifi).
Although my earlier hypothesis was rejected, it may still be worth using an RF meter to measure and compare RF interference at home versus the dealerās dem room.
And even though the hiss seems to have other causes, thereās now yet another cable in the mix thatās at least questionable:
I just donāt get it but tired of repeating myself
Hi,
not ignored, but i do not have the meter. need to get one first.
please find attached screen shot with specs of RICABLE speaker cable.
Canāt find it, where is it attached? I did look for the specs previously but could not find any, including on their website
Thanks, I did miss the capacitance value and the description when I looked earlier. The capacitance at 70 pF/meter is not extremely high, but it is 4.3 times higher than NACA5, which has 16 pF/meter. That might turn out OK, but unfortunately they are not telling us the inductance in these specs.
I canāt look inside the cable on the photos, but based on how they look (round and fat), and the description, I would expect low inductance. This would be typical for the construction that they describe in the specs: 224 wires in 7 braids of 32 conductors. Itās exactly what I cautioned against in the earlier post:
I.e., āAnything that is braided or litz type (wires within a strand being individually isolated and woven together in a pattern) are usually unsuitable for Naim ampsā
And this combination of low inductance and high-ish capacitance would not be good, because you would need many meters to reach the recommended lower limit of inductance (NACA5 has inductance of 1 Ī¼H per meter, and recommended minimum length is 3.5 meters per channel, ideally 5-10 - as mentioned in the FAQ) and this would make capacitance quite high at the same time. (And is expensive and inconvenient by requiring many meters). We canāt be sure, unfortunately, without having the inductance value.
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