NV 112 Reverb Hum

Bill Findlay · Post by **Bill Findlay** » 31 Jul 2004 9:17 am

On my NV 112 I pick up a 60 hz hum when I set the Master reverb contol above 3 or 4...This is with nothing plugged in the input jacks or any of the other jacks...I don't believe this to be normal...and would like to know what is a possible cause and remedy...Thanks for response

Maybe Mike Brown could offer some remedy...

Bill Ferguson · Post by **Bill Ferguson** » 31 Jul 2004 1:28 pm

Bill,
Check the reverb pan and see if it is mounted close to the front of the cabinet.

If it is, take out the 2 screws though the vinyl cover and shift the pan to the back of the cabinet. That should take care of it unless there is an electrical problem.
Bill

Richard E. Lee · Post by **Richard E. Lee** » 31 Jul 2004 5:17 pm

Bill, Thanks for the Heads-up on that hum....problem. Mine does exactly the same thing. I will check that out and re-position it if necessary. It would be interesting to see what Mike B has to say about that. If it is mounted toward the front, I wonder why Peavey would ship it in that configuration in the first place. How did you ever find out the fix? Thanks

Bill Findlay · Post by **Bill Findlay** » 1 Aug 2004 12:21 pm

Thanks Bill for your reply...
Yes I've tried that and didn't help..
The hum remained the same ....

One other suggestion that I received was that the plastic plug on the chassis could be plugged in backwards, which corrected the hum problem for one forum member. But I checked that and I believe mine is plugged in OK. Anyone else with this problem might check this out. It is difficult to get to but if you turn the amp upside down it is easier to check.....

Eric West · Post by **Eric West** » 1 Aug 2004 12:50 pm

Much as I LOVE and swear by Peavey amps, I don't see why they don't just provide an in and out plug and label it "Your Digital Reverb"..

EJL

Ray Minich · Post by **Ray Minich** » 1 Aug 2004 6:40 pm

Make sure the whole amp is not sittin' near anything else electrical. I had my power strip with the DeltaFex wall wart on it right next to the base of my amp and it was making my reverb hum a little bit. Moved it and the hum went away.

Mike Brown · Post by **Mike Brown** » 2 Aug 2004 5:24 am

I recommend that you move the reverb pan away from the speaker. You might make sure that you are not plugged into an electrical circuit that has light dimmers though.

Let me know what is found, if anything. I can be reached toll free in North America at 1-877-732-8391.

Mike Brown
Peavey Electronics Corporation

John Daugherty · Post by **John Daugherty** » 2 Aug 2004 7:04 am

Bill, Eric has some excellent advise. I use electronic delay for my steel. Although I use a NV400, I never use the spring reverb and do not like the "twang" sound.
After 40+ years of playing, I personally prefer the delay...... JD

Mike Brown · Post by **Mike Brown** » 3 Aug 2004 5:06 am

Eric, we did. It's labeled POST EQ SEND AND RETURN on the front panel.

Bill Findlay · Post by **Bill Findlay** » 3 Aug 2004 5:33 am

Thanks everyone for your response.....
I relocated the amp to a different location plugged into a different 120 vac ckt and I still had the hum problem........
So I removed the reverb tank and experimented around with it ...When I got it away from the speaker completely outside the cabinet the humm
was greatly reduced.....I exchanged the phono connections on the reverb tank and this greatly
lowered the hum ....So I ended up moving the reverb tank as far away from the speaker as possible in the location in the bottom of the cabinet and exchanging the two phono connections that connect the tank to the amp..The hum is quite abit less altho there is still some in the high reverb setting like five or six and greater...With this change it is much better and since I use the reverb with a 3 setting or so and some delay from a delay pedal I can get a nice steel sound from this NV 112....This is a great amp for its intended use...seems to me a good way to improve an amp is for it have a built in electonic reverb in place of the spring..Seems a majority of players don't like the spring and rarely use it.....

c c johnson · Post by **c c johnson** » 3 Aug 2004 6:46 am

Mike, don't you dare change a thing on the nash 112. Those that prefer a digital reverb/delay or what can turn off the amp reverb and plug into the in and out provided. The amp reverb is a sweet reverb and adds so much to the tone JMHO CC

Eric West · Post by **Eric West** » 3 Aug 2004 1:48 pm

Mike B.

Thanks. That's what I get for being facetious.

I LOVE MY 112!!

I've been playing it in the larger venues I do, where I'd have used the Nv400, and It's hit every time. I've been using a Fender Bassman Model on my Podxt with the attendand "overdrive", and I think the compression actually smooths it out nicely.

I've used the LowZ Line out a couple times and the sound people were really happy with the signal.

EJL

PS. Those Neon Lights and rheostats in clubs have always screwed up my reverbs, and I think sooner rather than later, they'll be replaced by digs.

c c johnson · Post by **c c johnson** » 3 Aug 2004 3:04 pm

More Kudos, mahalos,arigatos, and what ever to Mike and Max. I needed some work done they did it, turned it around in a couple of days and the amp sounds better than ever. You guys are great and I hope Hartly knows it. Don't we all wish that all business, prof people, manufaturers, etc were like Peavey and the people who work there. I don,t imagine this is in the works but put me on the list for the first Peavey automobile made. CC

Mike Brown · Post by **Mike Brown** » 4 Aug 2004 5:04 am

Bill, be sure that you are satisfied with the amp. If it is not right, I want to know about it so that I can take the proper steps to make it right.

As always, I can be reached toll free at 1-877-732-8391 from 8am to 5pm CST Monday through Friday and will be glad to help you. Max will too.

Thanks for the support.

Roger Shackelton · Post by **Roger Shackelton** » 4 Aug 2004 8:58 am

If you have any of those coil fluorescent lights in the same room, they will cause a problem.

Roger

Bill Findlay · Post by **Bill Findlay** » 6 Aug 2004 7:22 am

Thanks for all the replies....I still have some humm on settings of 5 and greater but it could be from some of the items mentioned in the posts.....I'm going to do some more checking and my end up sending it to Pv if I can't resolve it.... I do use a delay in the preeq / patch jacks then I like some amp reverb to go with that...I believe some reverb softens the sound....but if there is a humm component it is not desirable to the sound.....

Mike Brown · Post by **Mike Brown** » 6 Aug 2004 10:48 am

My toll free number is 1-877-732-8391.