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Topic: Peavey LTD 400 |
Eddie Harper
From:
Fairfield, Ohio
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Posted 3 Feb 2018 12:32 pm |
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| I Have a '79 LTD 400 that has developed a slight Distortion. The Cone has no apparent cracks and speaker connections seem fine. Its a BW Speaker 15". It was working fine the last time I used it about 6 months ago. I had it stored on a shelf with amp cover and quilt in my garage. Would the cold weather have created a problem? Do I just need to send the Head or the whole amp to Peavey for Repair? Thanks Eddie |
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John Swain
From:
Winchester, Va
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Posted 3 Feb 2018 1:01 pm
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| Remove the magnet off the BW speaker and check if the foam rubber dust seal is dry rotted. Also check Molex connectors and clean all potentiometers. |
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Stephen Cowell
From:
Round Rock, Texas, USA
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Posted 3 Feb 2018 1:21 pm
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First thing I'd do is jumper any loops the amp has... my NV400 has two, the VP loop on front and the effects loop in back. I always put a short 1/4" cord between the jacks, no crackles after that!
_________________
Too much junk to list... always getting more. |
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Dick Sexton
From:
Greenville, Ohio
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Posted 3 Feb 2018 5:54 pm Ltd400
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Hi, Eddie... Sorry to hear your having an issue with the LTD, but given the age of that little gem, it is not too surprising.
John is correct, it could be the foam around the coil breaking down or could just be dust or debree in the magnet slot. I would prove that first by hooking up another speaker. Easy enough. If another speaker is distorted then it is in the chassis. If not then maybe debree in the speaker slot.
Stephen is also correct, except the LTD400 doesn't have all of the front jacks that the NV400 has. It has two input, but both are switched, meaning the input connection is grounded when a plug is not input into the jack. Simply putting in and removing a plug into these jacks several times may clean the jack enough to tell if that is the problem. Of course a good spray contact cleaner would be advised. Two jacks on the front and two on the back would need to be done. Make sure power is disconnected from the amp.
That little amp, even though it is in really good shape, has been down the road. Two trips to Japan, miles and miles of North Carolina roads to and from jobs. It has been to the Peavey factory for repair once and Ken Fox re-caped it at one point. It had it's output transistors replaced once on Okinawa Japan when Freddy Fenders fiddle player borrowed it to do their show, and they gave way. The pots have never been replaced, but I always tried to move them away from the settings I played when I remembered.
I hope you get her all fixed up. She is a good one and those old Black Widow speakers are not easy to find now days, I believe. Of course that one is well broke in.
My best to you.
Call if you need,
Dick Sexton |
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Dan Beller-McKenna
From:
Durham, New Hampshire, USA
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Posted 8 Feb 2018 3:21 am
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| If it's a buzzing sound, check that everything is screwed down tight. The nuts holding the speaker to the baffle should be hand tightened only, but tight for sure. Also check things like the handle and back panels. I've had this problem with more than one amp or cabinet. |
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Bill Terry
From:
Bastrop, TX
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Posted 8 Feb 2018 6:51 am
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I agree with John, check those Molex connectors. They are notoriously problematic, but a super easy fix.
I have a Session 400 (same amp as an LTD) that was parked for over a year. I fired it up a few days ago, and it had a lot of distortion and low volume. I took out the chassis and cleaned (really just removed and re-seated) every Molex connector on the PCBs, and bingo, works like new again. |
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