musicexpression - Oh I'd love it to make no hiss near max! :) I don't suppose there are any easy to swap out internal parts that may cause less hiss? - or does it come down to circuit design :o ?
Yes, the humm and hiss gets louder with volume. In saying this I'd not noticed background noise untill I switched power cables (linear psu for my SB) not a huge difference by any means but enough to make me think. Hence, the interest to understand where the noise comes from and hopefully make things quiter still. The power cable I would say was a basic (after market one) at £60, so one would be under the impression a high end cable would make even more of a difference...... The previous flex was soldered in, and the £60 one is plugged in, I was thinking soldered was better than push fit, hence, I'm thinking cable technology. The only other things switched on are the fridge and a light, oh and pc. I'll test daytime without the fridge just for a short while, never know. Rca's have been in and out a good number of times recently so one would hope they are quite clean, and hopefully not getting worn out ;) Good couple of tips, Thank you. I'll try the power amp with no rca's plugged in, fingers crossed no humm, and SB straight to power amp Ta :) Phil - Yes I've switched between inputs on the pre/pro the hiss stays the same. (SB digi coax in, all other imputs have nothing plugged in) Good point! all my signal cables are will shielded. As for the power cables, the SB power cable I think is shileded - I'll check, the pre/pro is not, and the power amp is. Ah unfortunatly, due to the limited space layout both speaker cables and IC's run next to two metal cased (earthed) transformers - But, the speaker and IC manufacturer says 'don't need to worry about interference due to the number of dielectric layers and shielding on the cables... :) Oh how nice it would be to have no hiss or hum at max with nothing playing, ho hum, at least I'm giving it a shot :) Did you try not quite so expensive psu's to start with? Cheers Steve and TLegs for the halogen tip, we only have halogen in the bathroom. -- Deaf Cat ------------------------------------------------------------------------ Deaf Cat's Profile: http://forums.slimdevices.com/member.php?userid=515 View this thread: http://forums.slimdevices.com/showthread.php?t=62723
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