Peavey Nashville breaks up on every C# !

Jim Cohen · Post by **Jim Cohen** » 8 Sep 2000 1:15 pm

My (older) Nashville 400 breaks up every time I hit a C# note on the C6 neck. Not on C or D, just on C#. Especially in the low registers. What's up with that? Is the speaker blown or what? No obvious tears in the paper.

Ed Iarusso · Post by **Ed Iarusso** » 8 Sep 2000 2:26 pm

Hey Jim I can't help you with the break up problem, but I'm just saying Hi. It was good to meet you and talk a bit. I'm still chewing on the Newman stuff. Hope to see you in Norwalk this November.
Your Pal, Ed

Steve Feldman · Post by **Steve Feldman** » 9 Sep 2000 8:33 am

Jim - You have, no doubt, heard the joke about the buy who goes into the doctor saying it hurts when I keep doing this....? It's just one little ole note out of many.

BTW - why don't you drop me an e-mail sometime and tell me your experience with priceline for airfare.

Thanks.
Steve

Bob Metzger · Post by **Bob Metzger** » 10 Sep 2000 12:36 pm

Make sure the speaker is tight against the baffleboard. Tighten it like you are putting a tire on a car, firmly but don't over torque it!

Check the wires to the speaker. Make sure they are firmly in the speaker terminals (I like to 'tin' mine with a soldering iron). Also, and very importantly, check the other end of the speaker wires, where they connect to the amp chassis. Earlier NV 400's use a Molex connector that can be problematic. Learn to re-tension the sleeves within the connector (search for NV 400 maintenance threads, Molex connectors). If it's a later unit, no Molex connector is used and the speaker wires are soldered directly to the circuit board. Check the integrity of that connection.

Sometimes the patch jacks can 'act up'. Get a good quality electronics spray cleaner and apply to both front and back jacks, then work a 1/4' plug in and out several times on each jack.

If these things don't help, it's time to pull the chassis and that, I think, means it's time to call a qualified tech. Internally, I would check for bad solders, frayed wires, and other questionable connections before moving onto the power supply and power amp.

Good luck

Ernie Renn · Post by **Ernie Renn** » 10 Sep 2000 2:01 pm

Jim;
There are some good suggestions for you to try in this thread. Here's another: Check to see if the dust cover is coming off. I had one come loose and it would buzz on certain notes.
Yet another: Try smacking the top of the amp. This may sound crude, but it might be time to have the amp gone thru to get rid of any bad solder joints. My LDT rides in the belly of the bus and I have to take it in about every 6-8 months to have it gone thru.
Hope you locate the problem and get it resolved!
Congrats on a great job at the convention! I knew you could do it!

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My best,
Ernie

The Official Buddy Emmons Website
www.buddyemmons.com

Mike Brown · Post by **Mike Brown** » 11 Sep 2000 6:44 am

Jim, I suggest that you determine if it is vibration related. If it is, I think that it is a connection problem in the chassis. But, it could also be a defective speaker basket or trash in the gap of the magnet. But, since it happens on the C# note, I think that it is a defective replacement basket. Let me know what is determined. Thanks.

Chris Bauer · Post by **Chris Bauer** » 11 Sep 2000 9:13 am

Have you tried playing D flat instead?

Jim Cohen · Post by **Jim Cohen** » 11 Sep 2000 9:52 am

Good idea, Chris! Turns out it doesn't make that noise on Db, only on C#!

Ernie Renn · Post by **Ernie Renn** » 11 Sep 2000 10:19 am

Isn't it always the simple solution?....

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My best,
Ernie

The Official Buddy Emmons Website
www.buddyemmons.com

Chris Bauer · Post by **Chris Bauer** » 11 Sep 2000 10:23 am

ALWAYS glad to help! hehehehe

Bob Metzger · Post by **Bob Metzger** » 11 Sep 2000 1:52 pm

Mine does it on B##

Jim Cohen · Post by **Jim Cohen** » 14 Sep 2000 6:50 pm

Well, I just re-set the wires into the speaker and tightened up the molex connector... and it doesn't seem to break up on C# anymore! May have just been a loose connection? I'll have to play it a bunch more at home, though, before I'm convinced enough to take it out to a gig. Thanks for all the suggestions! With any luck, this will have turned out to be an easy one!

gary darr · Post by **gary darr** » 5 Mar 2004 8:18 pm

Nothing like resurecting a old topic, I had a similar problem on my session 500,It would distort or break up with certain low notes.Well I finally got brave enough to pull the magnet off the black widow and found that the foam dust screen thats right behind the wire screen had come apart (I guess with age and heat) and worked its way down between the circular groove in the magnet and the voice coil,it created a sticky goowy mess in there. My solution was to pull the magnet off and take rubbing alcohol and poured it into the groove of the magnet and let it soak for a couple of minutes, then turned the magnet upside down and dumped the excess out and use pieces of corragated cardboard to insert in the groove and clean the rest out. I then took a hair blow dryer to the magnet and dried it up good. then took a paper towel saturated with alcohol and carefully cleaned the goop off the voice coil,reassembled the magnet and she sings loud and clear even down in the low notes, I just wish I had done that a long time ago....maybe this will help someone somewhere down the road

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Dekley S-12 Session 500,American standard Strat,Shecter tele,Peavy Classic 50

Jim Cohen · Post by **Jim Cohen** » 5 Mar 2004 8:34 pm

Wow; talk about dredging up an old thread! LOL!

C Dixon · Post by **C Dixon** » 6 Mar 2004 9:46 am

Jim,

In all likelyhood it was the molex connector. This is about the only thing that ever is typical a problem on the NV400.

carl

John Bechtel · Post by **John Bechtel** » 6 Mar 2004 12:14 pm

When cleaning electronic equipment, I've been told that if you use alchohol it should be the 90%, not 50% or 70%, because; the rest is water. I only know what I was told. I'm not factual, when it comes to electronics, but; I try to be safe.

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“Big John” Bechtel
http://community.webtv.net/KeoniNui/BigJohnBechtels

Jim Cohen · Post by **Jim Cohen** » 6 Mar 2004 1:29 pm

I agree John. That's why I always have a little nip before tackling electronic problems.

gary darr · Post by **gary darr** » 8 Mar 2004 10:58 am

I had read a thread a couple of years ago about the molex connectors. I had checked and cleaned the connectors and cleaned all the pots, this helped quite a bit but I think I had a two-fold problem,untill I cleaned the goop that was restricting some of the movement of the voice coil did the amp sound nice and clear at all times.

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Dekley S-12 Session 500,American standard Strat,Shecter tele,Peavy Classic 50

<FONT SIZE=1 COLOR="#8e236b"><p align=CENTER>[This message was edited by gary darr on 08 March 2004 at 03:04 PM.]</p></FONT>

Erv Niehaus · Post by **Erv Niehaus** » 8 Mar 2004 12:51 pm

Doc, It hurts when I do that. Then don't do that!

HowardR · Post by **HowardR** » 8 Mar 2004 6:15 pm

Jim, try hitting a Db. Your amp may be enharmonically challeged.

Tony Prior · Post by **Tony Prior** » 10 Mar 2004 8:46 am

Don't play Db or C#..just forget em' both...

No charge..

t

Sam White R.I.P. · Post by **Sam White R.I.P.** » 10 Mar 2004 11:49 am

Jim you don't have to worry about it breaking up now that you tightened up the connectors. I had the same problem and that is what it was . mine happened about 8 months ago and it has been fine ever since.
sam White