Wisdom/Advice Needed: Vintage Pedal in line makes entire board pop

Mystik Spiral

Senior Member
Messages
3,476
My board is simple/clean. Everything runs off Voodoo Labs PP2+ and nice patch cables and is as it should be.

When I add a 70s MXR envelope filter (battery or aftermarket 9v jack installed)

Every pedal before and after starts to get the true bypass pops. as if the buffers don't silence the chain.

Take it out of the chain and everything is back to normal?

Am I looking at getting the vintage switch replaced? is it a power thing? What do I need?
 

tubekingsley

Member
Messages
4,050
You Could replace the switch and change the pedal to a true bypass configuration. I belive the old mxr pedals use a hardwire bypass.

Check this out
http://www.jimdunlop.com/blog/what-you-need-to-know-about-true-bypassing/

You could also get a loop switch so you can leave the pedal always on and engage it in a seperate loop. This is easy and you dont have to change anything on the vintage pedal.

Good luck!

Edit- fixed wrong link
I keep mine in a loop, but Analogman can do a true bypass mod on that pedal- I inquired about it, a few years back
 

Mystik Spiral

Senior Member
Messages
3,476
I have a Lehle D.C. Filter which is designed to eliminate D.C. from your signal that causes switch pop.

when i got a 5E3 deluxe, i started getting all the pops that i didn't have with other amps.

I was gonna invest in the dc filter but when i switched the buffer on on my strymon flint (last in the chain) it did the same job and fixed all the pops.

however it's just now when the filter is on they come back, the bypass sound is fine.
 

Clark GriswoId

Looks Great. Little Full, Lotta Sap.
Silver Supporting Member
Messages
3,957
Keep it in a Loop would be simple cheap fix. I just put my board into a 5 loop switcher - amazedat how quiet it bacame after.
 

Caprica

Member
Messages
1,481
when i got a 5E3 deluxe, i started getting all the pops that i didn't have with other amps.

I was gonna invest in the dc filter but when i switched the buffer on on my strymon flint (last in the chain) it did the same job and fixed all the pops.

however it's just now when the filter is on they come back, the bypass sound is fine.

I am no expert in this stuff. Maybe a TGP electronics wiz could pipe in. There is a technical discussion of it here on Mr Black's site:

https://www.mrblackpedals.com/blogs/straight-jive/6629778-what-really-causes-switch-pop

Most of that didn't make sense to me. The manual for the Lehle filter has a less technical discussion:

http://www.lehle.com/_data/products/DC-Filter/Manual/Lehle-DC-Filter-manual-and-uses.pdf

It seems to you have a few choices: buy a dc filter (I got mine second hand on eBay half the price of a new one), isolate the dc bleeding pedal in a looper, or get the pedal modded to have a built in filter. Lots of TGPers into vintage gear I have seen on this board tend to go down the looper route.
 
Last edited:

Mystik Spiral

Senior Member
Messages
3,476
I am no expert in this stuff. Maybe a TGP electronics wiz could pipe in. There is a technical discussion of it here on Mr Black's site:

https://www.mrblackpedals.com/blogs/straight-jive/6629778-what-really-causes-switch-pop

Most of that didn't make sense to me. The manual for the Lehle filter has a less technical discussion:

http://www.lehle.com/_data/products/DC-Filter/Manual/Lehle-DC-Filter-manual-and-uses.pdf

It seems to you have a few choices: buy a dc filter (I got mine second hand on eBay half the price of a new one), isolate the dc bleeding pedal in a looper, or get the pedal modded to have a built in filter. Lots of TGPers into vintage gear I have seen on this board tend to go down the looper route.


A sc filter just came up on eBay I scored for a great price
 

analogmike

Vendor
Messages
7,404
Replacing the offending (input or output) leaky cap in the Envelope filter should fix it. True bypass will help but only when OFF, when ON it will still make other things pop.
 

Mystik Spiral

Senior Member
Messages
3,476
I got the lehle dc filter in line but it does absolutely nothing in my situation... The old MXR filter has seen better days and can be a bit finicky so i might give up the dream of using it on the gig board.

Now to see if the DC filter can earn it's keep in another situation.
 




Trending Topics

Top Bottom