Parallel effects loop for Marshall style amps

thinlizzy · Post by **thinlizzy** » Mon Feb 05, 2007 7:15 am

Larry,

If I place the loop before the master volume, it will still function as an effect loop, and at the same time I will have some more gain??

I almost finist it buiding..

Regards Marcel

novosibir · Post by **novosibir** » Mon Feb 05, 2007 7:26 am

thinlizzy wrote:... and at the same time I will have some more gain??

No! You either can use it as an effects loop, or as a boost stage through the CF and the jacks jumpered with a cord. But the parallel (dry) path in the loop topology doesn't obtain additional gain - it gives exactly that amount of gain out, what's going in.

Larry

Olaf · Post by **Olaf** » Wed Feb 07, 2007 8:02 am

Hi Larry,

would be cool if you could sent that to me too . . .

drolafkrampe (at) t-online (dot) de

Danke Dir !

MrDan666 · Post by **MrDan666** » Wed Feb 07, 2007 2:35 pm

Hi Larry,

could you send me it too please?

Thanks

Dan

thinlizzy · Post by **thinlizzy** » Thu Feb 08, 2007 3:34 pm

Oke...
I build the loop and placed it in my jmp 2204, the loop worked right away.
I think it is a great loop I dont hear any sound coloring, I use a delay and a GE-7 in the loop and they worked perfectly, very nice for solo boosts.
Beter then any other loop I tried. Really a piece of art!
I recommend this loop to everyone...

Thanks a lot Larry

Only one thing.....when I put the master volume on 1 its much louder then before (with the send and return on 0) is this normal?

jerrydyer · Post by **jerrydyer** » Sat Feb 10, 2007 10:45 pm

hey thin lizzy did you do loop and you left the master where it was? so you have send return and master?

5150loveeddie · Post by **5150loveeddie** » Sun Feb 11, 2007 12:11 am

novosibir wrote:
thinlizzy wrote:... and at the same time I will have some more gain??
No! You either can use it as an effects loop, or as a boost stage through the CF and the jacks jumpered with a cord. But the parallel (dry) path in the loop topology doesn't obtain additional gain - it gives exactly that amount of gain out, what's going in.

Larry

Aren't we lucky that German dude landed her, Larry I just got informed of that thread and finally our prayers will be answered. I'm always last to know

Is there a feature on this forum as anytimes Larry kicks in here an alarm will tell me so????!!

Larry rocks

thinlizzy · Post by **thinlizzy** » Sun Feb 11, 2007 4:48 am

I place the loop after the master volume, so I have: master volume, effect send, effect return.
I dont exactly know what happen when you leave the effect send out and use the master volume for that. I think the effect get a very hot signal...

Great loop!! try it

Marcel

jerrydyer · Post by **jerrydyer** » Mon Feb 12, 2007 2:11 pm

I had a too hot signal still to my effects on evey loop I have installed. Larrys is in the works right bow. Thinlizzy how is yours? still good? any problems?

jerrydyer · Post by **jerrydyer** » Mon Feb 12, 2007 2:12 pm

you shouldnt need two masters in a row though. Master, send, return ??
It should be effects send becomes master effects return assist the master and you do a balancing act right Larry?

novosibir · Post by **novosibir** » Mon Feb 12, 2007 2:44 pm

jerrydyer wrote:you shouldnt need two masters in a row though.

Where have you seen two Masters?

The Send Level is NO Master, because it doesn't influence the dry path!

Some more lessons?

Larry

jerrydyer · Post by **jerrydyer** » Mon Feb 12, 2007 3:44 pm

I was referring to thinlizzys dilemma, sort of

thinlizzy · Post by **thinlizzy** » Tue Feb 13, 2007 3:14 am

Hi,

The loop is working great, I dont know how hot the signall is thats going to the effect, at the moment I have no scoop around to messure. But I installed it in an jmp 2204. The B+ at the PI is around 310V. Larry do you know what voltage is going to the effect??
I can turn the effect send to a high level and it still sound good!

I think this loop stays in!!

Marcel

novosibir · Post by **novosibir** » Tue Feb 13, 2007 3:51 am

thinlizzy wrote:The loop is working great, I dont know how hot the signall is thats going to the effect...
Larry do you know what voltage is going to the effect??

Can't say it at the moment, because due to renovation here all my measurement writings still are buried anywhere.

But keep in mind:

Although with the Master in front of the loop section you (nearly) don't have any sound colouration, you always have to readjust the Send & Return Levels when you change the Master setting. A higher setting on the Master is resulting in a higher Send Level.

With the Master after the Loop section in front of the PI you never have to readjust the Send & Return Levels, when you change your Master setting. Although in the 2203/2204 layout at higher Gain settings then the recovery stage of the loop section more and more becomes a 'afterburner type' gain stage, the higher the setting on the Gain control, what definitely is colouring the sound away from the typical 2203/2204 sound - but many even like it.

When you try the Master after the loop section, don't forget the additional coupling cap! one .022 from the recovery stage's plate to the Master and another .022 to the PI's input.

Larry

thinlizzy · Post by **thinlizzy** » Fri Feb 16, 2007 6:45 am

Hi,

I'm gonna build a on/off switch for the loop so I can use it as a solo boost.
Has some one a schematic for al simple on/off switch with a led that does'nt make a pop sound while switching.

Thanks!

Marcel

(Larry, i'm still very exited about your loop, best one I ever have!!)

Metropoulos Forum

Parallel effects loop for Marshall style amps

loop

yeah