| Visit Our Catalog at SteelGuitarShopper.com |

Post new topic Reverb Tank Bag
Reply to topic
Author Topic:  Reverb Tank Bag
Danny Bentley

 

From:
Hendersonville Tn
Post  Posted 3 Aug 2020 8:25 pm    
Reply with quote

I bought a Peavey LTD 400.
Reverb doesn’t sound good..
I noticed it isn’t encased in a bag.
Not sure if it came from factory this way
or someone removed it.


Does it need to be in a bag?
What difference would a bag make?

Any suggestions on a replacement tank
would be appreciated!
View user's profile Send private message Visit poster's website

Michael Brebes

 

From:
Northridge CA
Post  Posted 4 Aug 2020 6:07 am    
Reply with quote

The bag just keeps dirt etc. out of the tank. Most Fender amps don't screw the tank to the cabinet but the bag instead, leaving it floating in the bag.
_________________
Michael Brebes
Instrument/amp/ pickup repair
MSA D10 Classic/Rickenbacher B6/
Dickerson MOTS/Dobro D32 Hawaiian/
Goldtone Paul Beard Reso

Mesa Boogie Studio Pre/Hafler 3000
RP1/MPX100
View user's profile Send private message Send e-mail

Erv Niehaus


From:
Litchfield, MN, USA
Post  Posted 4 Aug 2020 6:44 am    
Reply with quote

All the reverb units I've worked with are in a bag, with the bag screwed to the bottom of the cabinet. Very Happy
Erv
View user's profile Send private message Send e-mail

Donny Hinson

 

From:
Glen Burnie, Md. U.S.A.
Post  Posted 4 Aug 2020 7:13 am    
Reply with quote

In addition to protection for the tank, the bag also offers a small degree of dampening (mechanical isolation). Depending on the amp cabinet, high degrees of mechanical coupling between the cabinet (which is constantly vibrated by the speaker) and the tank can cause annoying "ringing" reverb tails on some notes. I seem to notice this effect more on the smaller, lighter combo amps.

YMMV
View user's profile Send private message Send e-mail

Bill A. Moore


From:
Silver City, New Mexico, USA
Post  Posted 4 Aug 2020 8:00 am    
Reply with quote

What Donny said!
Even with the "insulating" washers!
I install mine with cardboard on the open end, and in a bag loosely screwed to the cab.
View user's profile Send private message Send e-mail

ajm

 

From:
Los Angeles
Post  Posted 4 Aug 2020 9:13 am    
Reply with quote

Just a thought on the bag...........

If you're making your own, you could always attach it to the cabinet with velcro instead of screws.
View user's profile Send private message

Jim Pitman

 

From:
Waterbury Ctr. VT 05677 USA
Post  Posted 4 Aug 2020 12:36 pm    
Reply with quote

There maybe other reasons your reverb doesn't sound good.
I'd try removing he tank from the cabinet, resting it on something to isolate it from the cab and see if the sound improves.
If it doesn't PM me. I can walk you through trouble shooting a reverb tank. - just need a cheapo ohmeter.
View user's profile Send private message Send e-mail

Jim Pitman

 

From:
Waterbury Ctr. VT 05677 USA
Post  Posted 4 Aug 2020 12:37 pm    
Reply with quote

Is that the older LTD 400?
If so I'm jealous.
View user's profile Send private message Send e-mail

Danny Bentley

 

From:
Hendersonville Tn
Post  Posted 4 Aug 2020 8:19 pm     Ltd 400
Reply with quote

Yep it’s the one with the silver knobs.
The reverb picks Up the smallest vibrations.

I sent the chassis to peavey. They checked everything,
but I didn’t send the reverb tank with it.

Dan
View user's profile Send private message Visit poster's website

Godfrey Arthur


From:
3rd Rock
Post  Posted 5 Aug 2020 4:03 am    
Reply with quote

What's the brand name of the tank?


Is it a O.C. Electronics Folded Line?


_________________
ShoBud The Pro 1
YES it's my REAL NAME!


Last edited by Godfrey Arthur on 5 Aug 2020 9:17 am; edited 1 time in total
View user's profile Send private message

Larry Jamieson


From:
Walton, NY USA
Post  Posted 5 Aug 2020 5:35 am    
Reply with quote

Anybody have a picture of those beautiful girls in Milton, Wisconsin?
View user's profile Send private message Send e-mail Visit poster's website

Jerry Overstreet


From:
Louisville Ky
Post  Posted 5 Aug 2020 5:47 am    
Reply with quote

As Jim alludes, there could be a couple of reasons your reverb is unsatisfactory. Of course the tank is one, but there's also the reverb circuitry in the amp.

I wouldn't think the lack of a bag would cause problems. I've seen many an amp with no cover over the tank. Long as it's insulated and fastened down with good padding under it, it shouldn't crash excessively on a stable or carpeted surface with normal use.

One way to help troubleshoot the problem is just to swap out the tank and see what changes. The MOD line of tanks is being well received. Available for about 25 bucks or maybe less and probably easy enough to re-sell if no help. clickhere

Possibly a qualified amp tech can narrow it down if that's a feasible and economical option.
View user's profile Send private message

Erv Niehaus


From:
Litchfield, MN, USA
Post  Posted 5 Aug 2020 7:04 am    
Reply with quote

There's a couple of tubes involved in the reverb circuit also, you might check them out.
Erv
View user's profile Send private message Send e-mail

Ken Fox


From:
Nashville GA USA
Post  Posted 5 Aug 2020 7:31 am    
Reply with quote

The original LTD400 and Session 400 did not have a reverb bag.

You might check and make sure the connections are cleaned. Check and make sure the reverb springs are clean. Some of the older tanks had some foam weather stripping above the springs to help dampen external vibrations. Often the foam rubber would rot and fall into the springs

Best bet then is a new reverb tank. The original was a 2 spring tanks, 4EB2C1B by Accutronics.

Also the tank's connection cables are often plugged in backwards at the amp chassis. Works but will add hum and not as good a reverb sound. Also tanks jacks face the speaker

The two RCA jacks up under the amp are not identified, thus making it difficult for someone to know which plug goes where

To identify easily just unplug the tank and lay the cable out the back of the amp. Turn the amp on and turn the reverb knob up a bit. Then ID which cable tip makes noise when you touch it. That cable goes to the reverb tank output side.

The reverb drive in the amp is a two push pull transistor circuit, not tubes
_________________
Please click link below to checkout my website:

http://foxvintageamps.com/
View user's profile Send private message Visit poster's website

Godfrey Arthur


From:
3rd Rock
Post  Posted 5 Aug 2020 8:28 am    
Reply with quote

I never knew Peavey to have a great reverb tone.

The touchstone has always been Fender.

As mentioned the tank has little to do with it. It's the circuit.
_________________
ShoBud The Pro 1
YES it's my REAL NAME!
View user's profile Send private message

Danny Bentley

 

From:
Hendersonville Tn
Post  Posted 5 Aug 2020 11:33 am     Ltd
Reply with quote

Thanks for all the replies. Pretty sure this one is just worn out!
I’m going to replace the tank and order a new bag to put it in!

Dan
View user's profile Send private message Visit poster's website

Rick Johnson


From:
Wheelwright, Ky USA
Post  Posted 5 Aug 2020 11:39 am    
Reply with quote

Cut a piece of heavy cardboard slightly larger
than the new tank and slip it in the bag under the tank.

Rick

www.rickjohnsoncabinets.com
View user's profile Send private message Send e-mail Visit poster's website

Erv Niehaus


From:
Litchfield, MN, USA
Post  Posted 5 Aug 2020 11:45 am    
Reply with quote

Reverb tanks differ, some are open on top and some are open on the bottom.
Erv
View user's profile Send private message Send e-mail

Godfrey Arthur


From:
3rd Rock
Post  Posted 5 Aug 2020 11:46 am    
Reply with quote

Rick Johnson wrote:
Cut a piece of heavy cardboard slightly larger
than the new tank and slip it in the bag under the tank.


Yeah Fender did that.
_________________
ShoBud The Pro 1
YES it's my REAL NAME!
View user's profile Send private message

Jim Pitman

 

From:
Waterbury Ctr. VT 05677 USA
Post  Posted 5 Aug 2020 2:42 pm    
Reply with quote

I'll give you $300.00 as is. Pm me. Don't replace the tank or anything else.
View user's profile Send private message Send e-mail

Danny Bentley

 

From:
Hendersonville Tn
Post  Posted 5 Aug 2020 4:58 pm     Ltd
Reply with quote

Thanks for the offer Jim.
I put a Neo speaker in it and the weight is great to
take on the road whenever we start back up!

Dan
View user's profile Send private message Visit poster's website

Steven Paris

 

From:
Los Angeles
Post  Posted 14 Aug 2020 2:31 am    
Reply with quote

Here's Brad Sarno's LTD400 upgrades, including mods to the reverb circuitry:

_________________
Emmons & Peavey
View user's profile Send private message Send e-mail

Jack Stoner


From:
New Port Richey Florida
Post  Posted 14 Aug 2020 4:19 am    
Reply with quote

The Lemay mod for the original model 400 replaced all the electrolytic caps on the preamp board.

I did the Lemay mod on one for a friend. Quieted the amp.
_________________
GFI Ultra D-10, Quilter Travis Toy 12 Amp, POD X3, MatchBro, Cakewalk Sonar and Studio One Pro V4.6 DAWs, MOTU 4pre
R.O.P.E. Member
View user's profile Send private message Send e-mail


All times are GMT - 8 Hours
Jump to:  
Please review our Forum Rules and Policies
Our Online Catalog
Strings, CDs, instruction, and steel guitar accessories
www.SteelGuitarShopper.com

The Steel Guitar Forum
148 S. Cloverdale Blvd.
Cloverdale, CA 95425 USA

Click Here to Send a Donation

Email SteelGuitarForum@gmail.com for technical support.


BIAB Styles
Ray Price Shuffles for Band-in-a-Box
by Jim Baron