Volume surge from OD to Clean

lerxst88 · 11-04-2008, 05:47 PM

i have a marshall dsl401 and i have a boss dd-6 in the fx loop. when i go from OD to clean it switches and then theres a loud surge of volume that last for half a second but then goes away.

any ideas???

JohnH · 11-04-2008, 09:47 PM

Very interesting. I hadn't notced it before, but I tried it myself and got the same result using my digitech delay with the 401.

When you switch from OD to clean, the delay still has a sample of the OD sound in it, that comes out during the first couple of seconds in the clean mode.

The send and return happen after the clean gain and OD gain, but before the OD volume and master volume. Also, there's a bit of lag in the amp changing over between modes.

I can't see an easy way to stop the effect, but it is dimished if you use generally higher OD channel volume and higher clean gain, with less master volume if required. That boosts the relative level of the clean channel at the point of the send/return, as compared to the OD level. Doing that, the level of that last sample of OD sound is less out of whack with the equivalent level coming through on clean.

What do you think?

cheers
John

sojatriani · 11-04-2008, 11:20 PM

Quote:

Originally Posted by JohnH

Very interesting. I hadn't notced it before, but I tried it myself and got the same result using my digitech delay with the 401.

When you switch from OD to clean, the delay still has a sample of the OD sound in it, that comes out during the first couple of seconds in the clean mode.

The send and return happen after the clean gain and OD gain, but before the OD volume and master volume. Also, there's a bit of lag in the amp changing over between modes.

I can't see an easy way to stop the effect, but it is dimished if you use generally higher OD channel volume and higher clean gain, with less master volume if required. That boosts the relative level of the clean channel at the point of the send/return, as compared to the OD level. Doing that, the level of that last sample of OD sound is less out of whack with the equivalent level coming through on clean.

What do you think?

cheers
John

And if the is an OD or distortion pedal in front of the amp that is on, it amplifies the surge sound. Mine has done it since new and my JCM900 4101 does it too, it's the worst with reverb turned up. Something to do with the relays Marshall uses to switch channels, there is a mod on the web where you change some caps on the relay circut, or cut some caps or something that is supposed to help. Both mine do it!! I have just learned to work around it over the years...like A+B with a Peavey classic 50 for my cleans and leave the Marshall on the dirty channel!!! Then I never have to switch

lerxst88 · 11-05-2008, 12:31 AM

good to see my amp isnt broken!

unfortunately i think my amp sounds best master volume cranked and channel volumes kept down so when it switches over it gets LOUD! i was jamming once and i forgot it did that and i literally jumped haha

it is kind of a neat psychadelic sound for anyone thats into that

steelhorse · 11-05-2008, 02:05 AM

I was just wondering what the significance of your avatar was lerxst88?

lerxst88 · 11-05-2008, 08:21 PM

its my car a honda CRX

i thought it was about time to get an avatar but i didnt have a good one of my amp.
but ill get one...dont you worry

11-04-2008, 05:47 PM	#1 (permalink)
lerxst88 Senior Member Join Date: Aug 2008 Location: Normal, IL Posts: 114	Volume surge from OD to Clean i have a marshall dsl401 and i have a boss dd-6 in the fx loop. when i go from OD to clean it switches and then theres a loud surge of volume that last for half a second but then goes away. any ideas???

11-04-2008, 09:47 PM	#2 (permalink)
JohnH Senior Member Join Date: May 2008 Location: Wollongong NSW Posts: 640	Re: Volume surge from OD to Clean Very interesting. I hadn't notced it before, but I tried it myself and got the same result using my digitech delay with the 401. When you switch from OD to clean, the delay still has a sample of the OD sound in it, that comes out during the first couple of seconds in the clean mode. The send and return happen after the clean gain and OD gain, but before the OD volume and master volume. Also, there's a bit of lag in the amp changing over between modes. I can't see an easy way to stop the effect, but it is dimished if you use generally higher OD channel volume and higher clean gain, with less master volume if required. That boosts the relative level of the clean channel at the point of the send/return, as compared to the OD level. Doing that, the level of that last sample of OD sound is less out of whack with the equivalent level coming through on clean. What do you think? cheers John __________________ DSL401 8412 cab Crate Powerblock 1 x 12 Vintage 30 cab '76 Shergold Masquerader '93 Les Paul Studio '83 Roadstar

11-05-2008, 12:31 AM	#4 (permalink)
lerxst88 Senior Member Join Date: Aug 2008 Location: Normal, IL Posts: 114	Re: Volume surge from OD to Clean good to see my amp isnt broken! unfortunately i think my amp sounds best master volume cranked and channel volumes kept down so when it switches over it gets LOUD! i was jamming once and i forgot it did that and i literally jumped haha it is kind of a neat psychadelic sound for anyone thats into that

11-05-2008, 02:05 AM	#5 (permalink)
steelhorse Senior Member Join Date: May 2008 Posts: 3,886	Re: Volume surge from OD to Clean I was just wondering what the significance of your avatar was lerxst88? __________________ www.ricojronline.com 760-956-6619 Garmopat Pedal Mods "I wouldn't mind hearing your head smash through a glass door. That would be cool..." luekmeyer

11-05-2008, 08:21 PM	#6 (permalink)
lerxst88 Senior Member Join Date: Aug 2008 Location: Normal, IL Posts: 114	Re: Volume surge from OD to Clean its my car a honda CRX i thought it was about time to get an avatar but i didnt have a good one of my amp. but ill get one...dont you worry

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