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Author
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Topic: Peavey Nashville breaks up on every C# !
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Jim Cohen
Member From: Philadelphia, PA
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posted 08 September 2000 02:15 PM
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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. |
B Cole
unregistered
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posted 08 September 2000 02:53 PM
Jim if you have the black widow. Take the speaker out of the Cab. there are 3 allen head screws take them out I would mark with a marking a line on the basket and the magnet so as to put it back togather tha same as it came apart lift the magnet off the basket in the magnet you will find a slot where the basket goes into take some masking tape and folt it sticky side out and clean that slot or grove or gap which ever you want to call it clean it real good so you don't see any black gook on the tape keep changeing the tape after your are satisfied that it is good and clean reassemble toe magnet just like you took it aparttry and get the screws near as tight as when you took them out normally this is all that goes wrong with the black widow unless tyou have a tear in it if the problem continues go to the miracle aud web site they have some other fixes for the N 400 thats John Lemays site |
Ed Iarusso
Member From: East Haddam, CT US of A
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posted 08 September 2000 03:26 PM
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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
Member From: Millbury, MA USA
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posted 09 September 2000 09:33 AM
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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
Member From: Waltham (Boston), MA, USA
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posted 10 September 2000 01:36 PM
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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
Member From: Brainerd, Minnesota USA
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posted 10 September 2000 03:01 PM
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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!------------------
My best,
Ernie
The Official Buddy Emmons Website
www.buddyemmons.com
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Mike Brown
Member From: Meridian, Mississippi USA
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posted 11 September 2000 07:44 AM
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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
Member From: Nashville, TN USA
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posted 11 September 2000 10:13 AM
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Have you tried playing D flat instead?  |
Jim Cohen
Member From: Philadelphia, PA
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posted 11 September 2000 10:52 AM
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Good idea, Chris! Turns out it doesn't make that noise on Db, only on C#! |
Ernie Renn
Member From: Brainerd, Minnesota USA
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posted 11 September 2000 11:19 AM
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Isn't it always the simple solution?....------------------
My best,
Ernie
The Official Buddy Emmons Website
www.buddyemmons.com
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Chris Bauer
Member From: Nashville, TN USA
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posted 11 September 2000 11:23 AM
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ALWAYS glad to help! hehehehe |
B Cole
unregistered
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posted 11 September 2000 11:31 AM
Hey Jim one other thing I forgot to tell you you could dump the 400 and spend some of that moldy old green you been hordin for so long and go for a 1000 or better yet a 2000. I know it's hard to part with and when I made the move I almost cryed but them Mike Brown said it's only money. but the only thing I can't bring my self to do is part with the old trusty 500 still got tone to the bone |
Bob Metzger
Member From: Waltham (Boston), MA, USA
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posted 11 September 2000 02:52 PM
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Mine does it on B## |
Jim Cohen
Member From: Philadelphia, PA
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posted 14 September 2000 07:50 PM
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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
Member From: Childress,somewhere out in Texas
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posted 05 March 2004 08:18 PM
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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------------------
Dekley S-12 Session 500,American standard Strat,Shecter tele,Peavy Classic 50
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Jim Cohen
Member From: Philadelphia, PA
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posted 05 March 2004 08:34 PM
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Wow; talk about dredging up an old thread! LOL! |
C Dixon
Member From: Duluth, GA USA
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posted 06 March 2004 09:46 AM
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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
Member From: Nashville, Tennessee,U.S.A.
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posted 06 March 2004 12:14 PM
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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.------------------
“Big John” Bechtel
http://community.webtv.net/KeoniNui/BigJohnBechtels
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Jim Cohen
Member From: Philadelphia, PA
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posted 06 March 2004 01:29 PM
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I agree John. That's why I always have a little nip before tackling electronic problems.  |
gary darr
Member From: Childress,somewhere out in Texas
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posted 08 March 2004 10:58 AM
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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.------------------
Dekley S-12 Session 500,American standard Strat,Shecter tele,Peavy Classic 50
[This message was edited by gary darr on 08 March 2004 at 03:04 PM.]
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Erv Niehaus
Member From: Litchfield, MN, USA
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posted 08 March 2004 12:51 PM
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Doc, It hurts when I do that. Then don't do that! |
HowardR
Member From: N.Y.C.,N.Y.
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posted 08 March 2004 06:15 PM
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Jim, try hitting a Db. Your amp may be enharmonically challeged. |
Tony Prior
Member From: Charlotte NC
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posted 10 March 2004 08:46 AM
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Don't play Db or C#..just forget em' both...No charge.. t |
Samuel E. White
Member From: Greeneville TN.
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posted 10 March 2004 11:49 AM
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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 |
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