Going Back To A Bi-Amp Setup...Need Advice


I once had my system set up in Bi-Amp mode using a Class D Audio 470c for the woofers on my Revel F52`s and my Rogue Atlas Magnum for the mids and highs and it worked nicely.

After awhile I felt as though I really didn`t need all that power for the listening levels that I like, so I sold the 470 and have been running the speakers full range through the Rogue ever since.

But now, I want to do it again but to my knowledge few amps have adjustable outputs like the Class D Audio did which was pretty useful in dialing it all in.

I want a different flavor this time around to power the woofers otherwise I would just get another 470. 

An amp like the Parasound A21 would work, but I wonder if there is a way to add a outboard volume control so that I`m not forced to only shop for an amp with adjustable outs ??

And also...is a Class D amp (design) a better candidate for this arrangement ??  They have gobs of power and are cool running to boot.
scm

Showing 4 responses by scm

Thanks yogiboy...didn`t realize it could be as simple as that ! Interesting...

Erik...I`m using a Tortuga Audio preamp with two outs so I`ll be using a splitter on one of them to feed the amp for the woofers.

I`m not an EE so I`ll need to find out what I need to look for when it comes to impedance matching and all that.

Thanks guys !
Whats the current thinking on using a Class D amp to power the bass section of speakers that have the ability to bi-amp ?
 
I`m leaning towards something in the 400 watt @ 8 ohm to do the job.
Ok...here`s where I`m at right now.

I need to raise the input impedance of two amps, a subwoofer amp that has 10K input and the other amp that I want to use for the bass section has 12K input. 
 A  buffer seems to be needed, so what`s out there that will do the job and are there any made with two inputs and two outputs ?