NAD 773 Reciever

[ManleyGun]

Please help, has anyone heard a a "hiss" noise coming from the speakers when hooked up with the NAD 773, is it normal. what could it be. Secondly what db should it show for a normal listening, I have to have it at roughly -25db for normal listening.

 

[av_phile]

I am not familiar with "hiss" in NAD amps though that could certainly come from your source materials, or some ungrounded RCA cable that also gives off "hum." But I have encountered a set-up with very sensitive tweeters that exhibit a hiss coming from whatever amplifier is used with them. But the hiss is audible only when you place your ears right beside the tweeters.

With regards the proper db levels for your listening, different receivers often don't sound with the same levels even if their display shows the same db setting. A lot has to do with amplifer-speaker matching in terms of sensitivity, and the amp's power rating as well. A 0db setting often corresponded to a 1 volt rms input to the amplifier or the level at which the amplifier delivers the full rated power. So disparately rated amps on receivers can yield different SPLs for the same db setting on their preamp display. I would say that the right db level would be anything that is comfortable to YOUR ears. Someone's -10db setting may be too loud for another.

 

[Yamahaluver]

No hiss in my mass market 15 year old amp, even after it has been played hard in 30c weather. NAD and hiss are old nemesis, live with it and get used to it, sort of things that make it and other exotica like Rotel, Parasound Hi-Fi compared to hiss-less mass market crap from Yamaha, Denon, SONY, Marantz, Onkyo etc.

 

[annunaki]

Guys, keep it clean. I've had enough of the flame wars!!

 

[Votrax]

I'm assuming the hiss your talking about is when the volume is turned all the way down. This is typically an aggressive DC bias current on the output transistors. It's usually not discernable at low volume levels anyway unless you have a bionic ear. As for the listening level it's whatever you feel is comfortable for the type of music you're listening to.