Slaving Boogies

[carlosasi]

What is actually happening when I take the direct out of my Mark III and go into my IIA Return? (I assume that is the correct way to slave Boogies) Am I using the front controls of my Mark III to drive the speakers of both amps or can I also use the preamp controls of the IIA to separately affect its sound? I've checked the manual but it doesn't go into detail.

Thanks

 

[JOEY B.]

Does your MkIIA have a true effects return, or does it say LINE IN ?

 

[carlosasi]

It appears to have been modified to have an effects send and return. I have run outboard gear in this loop successfully.

 

[JOEY B.]

It appears to have been modified to have an effects send and return. I have run outboard gear in this loop successfully.

Ok then. The controls that will be active on your MkIIA when running a signal into the effects return should be:

Master Volume and its pull function.
Presence
Graphic EQ

Since it is a MkIIA the lead drive control may alter the sound when it is turned, so I would make sure that the amp is switched to the rhythm channel.

 

[carlosasi]

This worked, cool, now I have a 2 x12 in essence whose volume and presense can be controlled separately. but I have no sound when switched to the Lead mode on the IIA is that normal?

 

[JOEY B.]

I have no sound when switched to the Lead mode on the IIA is that normal?

That could very well be normal. I never engage the lead channel of the slaved amp. Do all of your channel switching with the MarkIII or primary amp.

 

[carlosasi]

thanks for your help I just wanted to be sure I wasn't going to blow up my boogies. These kind of hookups test my dyslexia.