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Topic: Loud thump when turning amp on |
Tommy Boswell
From:
Virginia, USA
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Posted 4 May 2017 9:08 am |
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How many of you Peavey 400 amp users hear a loud thump when you switch on the power? Does that mean there's something wrong with the amp? And is it easy to fix?
My amp sounds great otherwise, just have to wonder if it will damage the speaker. |
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Rick Johnson
From:
Wheelwright, Ky USA
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Posted 4 May 2017 9:12 am
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Both my NV400 and Session 500 do this too.
Its just a surge of sorts energizing the speaker.
They did when brand new too.
Try turning the volume down before you turn it on.
Rick
www.rickjohnsoncabinets.com |
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Tommy Boswell
From:
Virginia, USA
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Posted 4 May 2017 9:23 am
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| Thanks Rick. It's my first 400, a Reno loaded into a very fine Rick Johnson cabinet...looks as good as it sounds! |
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Tucker Jackson
From:
Portland, Oregon, USA
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Posted 4 May 2017 9:27 am
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There was a thread on the forum many years ago about this. The upshot was that lots (most?) NV400s make a loud pop sound when powered on. It's considered a normal quirk of the amp and it apparently doesn't cause any damage.
My 400 does it... but I do keep volume and gain knobs set to zero before hitting that power button on. |
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Lane Gray
From:
Topeka, KS
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Posted 4 May 2017 9:47 am
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It's called the Peavey Pop.
Unless your speakers are weakened, it's harmless.
_________________
2 pedal steels, a lapStrat, and an 8-string Dobro (and 3 ukes)
More amps than guitars, and not many effects |
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Brad Sarno
From:
St. Louis, MO USA
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Posted 4 May 2017 6:47 pm
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Agreed, normal and harmless. It's a simple amp, and that's a good thing. It has no mute or timing circuit to deal with the power-on pop. Just live with it. Totally normal for that amp.
B |
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Stu Schulman
From:
Ulster Park New Yawk (deceased)
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Posted 4 May 2017 11:38 pm
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Both of my LTD's do this!
_________________
Steeltronics Z-pickup,Desert Rose S-10 4+5,Desert Rose Keyless S-10 3+5... Mullen G2 S-10 3+5,Telonics 206 pickups,Telonics volume pedal.,Blanton SD -10,Emmons GS_10...Zirctone bar,Bill Groner Bar...any amp that isn't broken.Steel Seat.Com seats...Licking paint chips off of Chinese Toys since 1952. |
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Paul Sutherland
From:
Placerville, California
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Posted 4 May 2017 11:41 pm
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It's kind of fun to turn on or off a Peavey when your amp is mic'd into a large PA. The sound engineers really freak out. I just try to look innocent.
_________________
It don't mean a thing if it ain't got that swing. |
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John Booth
From:
Columbus Ohio, USA
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Posted 5 May 2017 4:47 am
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Yep, just the ole "Peavey Pop"
They all do it
JB
_________________
Jb in Ohio
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GFI S10 Ultra, Telecaster, a Hound Dog, and an Annoyed Wife
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Richard Sinkler
From:
aka: Rusty Strings -- Missoula, Montana
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Posted 5 May 2017 8:24 am
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| Paul Sutherland wrote: |
| It's kind of fun to turn on or off a Peavey when your amp is mic'd into a large PA. The sound engineers really freak out. I just try to look innocent. |
The reverb in my NV400 doesn't work, so I use a Hall of Fame reverb pedal. I was running it through my front panel effects loop, but it has developed a high frequency hum. I've been using it between the preamp out and power amp in jacks. If I don't turn both gain controls to zero, it sounds like a nuclear explosion when I turn at on. It will take down an airliner at 20,000 feet.
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Carter D10 8p/8k, Dekley S10 3p/4k C6 setup,Regal RD40 Dobro, Recording King Professional Dobro, NV400, NV112,Ibanez Gio guitar, Epiphone SG Special (open D slide guitar) . Playing for 55 years and still counting. |
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Rich Upright
From:
Florida, USA
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Posted 9 May 2017 5:59 pm
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Every PV I've ever owned did this, & I owned a LOT of PV amps. My current Renown 400 1-15" does it.
_________________
A couple D-10s,some vintage guitars & amps, & lotsa junk in the gig bag. |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 10 May 2017 6:32 am Pop!
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| Solid state amp, instantaneous power. |
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John Dowden
From:
Louisiana, USA
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Posted 10 May 2017 3:37 pm
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| Every tube amp I've had does this as well to some degree. |
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Peter Harris
From:
South Australia, Australia
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Posted 11 May 2017 4:20 am
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I also get a loud thump every time I turn the amp on...
....but only when my wife is trying to use the phone...
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If my wife is reading this, I don't have much stuff....really! |
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Will Cowell
From:
Cambridgeshire, UK
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Posted 12 May 2017 6:28 am
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Hmmm, I though *everyone* turned their amp gain down to zero before switch-on or switch-off, or before connecting/disconnecting instruments or other equipment.
It's a valuable discipline, and avoids the risk of inadvertent damage through surges or transients.
_________________
Williams 700 series keyless U12,
Sierra keyless U14, Eezzee-Slide & BJS bars
Moth-eaten old Marshall 150 combo
Roland Cube 80XL, Peterson Strobo+HD,
EarthQuaker Despatch Master for reverb / delay |
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Derrick Unger
From:
Newark Ohio, USA
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Posted 12 May 2017 12:40 pm nashville pop
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My Nashville 400 makes 3 to 4 loud pops within about the first 20-30 seconds after I turn it on..makes the little clip light come on..doesn't do it again at all even if its on for hours..I just ignore it..doesn't seem to effect it..scares the s**t out of people not expecting it!!!
_________________
Music is good for the soul..playing it is even better! Gretsch6strLapSteel*PeaveyNashville400*HudsonSD-10*DigitechRP360*FenderChampion100*PeaveyKB300*Goodrich120*Behringerx1204*BehringerMini4*Mullen S10"Discovery"*Peavey Vegas400*Princeton112plus*SuperChampX2*SidekickReverb65*Rumble100*MarshallMG50DFX*Nashville112 |
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Mike Brown
From:
Meridian, Mississippi USA
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Posted 12 May 2017 1:06 pm Pop!
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| Derrick, that is a problem and our techs can resolve it for you. I recommend that you send the chassis to the factory for repair. |
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Ken Fox
From:
Nashville GA USA
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Posted 13 May 2017 6:57 am
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| That may be related to a dirty pot, namely the mid shift pot. Does it make a popping or other strange sound when turned? If so clean it. It can fire of a sound as loud as a 38 caliber pistol when it is dirty! |
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Mike Wheeler
From:
Delaware, Ohio, USA
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Posted 13 May 2017 7:51 am
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I like the new avatar, Ken. And I agree about the mid shift pot needing cleaning.
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Best regards,
Mike |
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Ken Fox
From:
Nashville GA USA
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Posted 13 May 2017 10:56 am
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| Thanks, Mike. That is my wife, Linda. |
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