PC for Brsyton 4B SST

Is it a loud buzz, or relatively quiet buzz? The buzz from my speakers is
pretty quiet...I almost have to put my ear to the tweeter to hear it.

I guess you have a digital volume control (or at least a digital reading on
your NAD), give me some perspective of the scale...what's the minimum
value and the maximum value? I can't get a feeling for -17db-0db and
+9db on a scale.

I'd try to borrow another receiver and/or amp + preamp combo, put it in
the system and see what happens. Do you have a dealer who will loan
you a demo unit?

Have you tried going straight to the wall? If so, is there a definite
increase in buzz?

Also, start with just your Bryston connected to the speakers without your
NAD or any source connected or plugged in. Does the buzz exist? If, so,
you can eliminate your receiver and source as the cause. Then, add
components one by one until the buzz returns. Then, you'll have traced
the cause of the buzz. Of course, if the buzz exists with just the Bryston
connected, you know the cause, and a call to Bryston is in order.

I don't personally believe you will solve the buzz with power cords, and
I've NEVER had a power conditioner eliminate or reduce the buzz from
my speakers. I've used Bybee Signature, Audio Stealth Magic Mini and
Digital Mini, Panamax something-or-other, Dezorel G2 and Hydra 4. My
feeling is speaker buzz is usually related to grounding issues either
helped or exacerbated by components.

I can hear the buzzing without having to put my hear right up to the tweeter.

The volume range on my receiver goes from -00 where there is no sound. The next step is -61Bd where sound buzzing begins and it ends at+9Bd.

Here is what I've figured out so far. With the reciever on but not my Bryston there is no buzzing. Once I turn on the amp the buzzing starts.

With the amp powered and the Nad off there is still buzzing. If it ends up to be a grounding issue how can I go about fixing it. I've tried my best at arranging my cables but things are pretty tight back there.

You need to unplug the NAD and physically disconnect it from the Bryston to check for the buzz. I say this because I've done this test myself, and discovered that often the buzz will exist even when a connected component is turned off. When the component was disconnected the buzzing stopped or was diminished.

If you have continued buzzing with only the Bryston connected, then again, I suggest you contact Bryston. While there may be nothing wrong with the amp, they may have an idea about a solution.

You didn't mention if you've tried going straight to the wall with the Bryston's power cord.

Grounding issues are a hassle. I've tried every method suggested here on Audiogon (do a thread search), and none of them have worked in my case. Usually, I've fixed the ground loop hum by trial and error of connecting and disconnecting interconnects, trying shielded interconnects, etc.

But, I'll admit I've never had a ground loop hum when just my amp was connected to my speakers with nothing else plugged in or connected to the amp.

Good luck!

Tvad,

Thanks for the time you've taken in trying to help me.

With the reciever completely disconnected there was no buzzing but hissing. I've tried connecting the amp straight to the wall and into my powerbar to little effect.

Believe I've tried myself and thought to give it anoher try. I wish there was a device that would pinpoint the problem instead of all this trial and error.

I have searched and found ground loop isolators ranging from $9.00 to over $100.00 but I'm leary.

Many Thanks

OK, no buzz, but hiss with only the Bryston connected is normal. Did the hiss go away when the amp is connected to the Monster? If not, it would seem the Monster doesn't provide much conditioning, but perhaps some surge protection, which might be important to you. Otherwise, what's the point of the Monster other than a glorified outlet strip?

The buzz comes in when you add the receiver. Connect the receiver but leave it unplugged. Any buzz? How about when you plug the receiver in, but don't turn it on? Now, turn it on. Do you see the methodology here? I'm assuming during this you have no source connected or plugged in. If you do, then you can't isolate the problem to the receiver. Take it one step and one component at a time.

Are you connecting the receiver via balanced cables? If so, try single ended cables or vice versa.

I was doing this exercise once. I had no buzz with just the amp. I got a buzz with the preamp connected and plugged in, but without a source connected. Once I connected the source and plugged it in, the buzz went away! Who know why? I don't.

If the buzz occurs when the receiver is connected with a source, I'd try borrowing a preamp and see if the buzz goes away.