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Help? Bi-Amping With A Pair of Roksan KA-1 Amplifiers

Hello. I need some help with trying to multi-amp with my two Roksan Kandy KA-1 integrated amplifiers. I have a pair of B&W DM640 speakers (may upgrade soon) that are bi-amp capable. I am trying to figure out exactly how to drive the upper frequencies with one amp and the lower frequencies with the other amp.

The later models of the Roksan amplifiers have a trim capability which is supposed to help balance the outputs when bi-amping- I think. My amps do not have the trim function. My amps do have what looks like pre-out and pre-in RCA (L+R) plugs that are bridged with a metal jumper bar. The pre-out is called a “Remote Out” but I think this is a pre-out.

When I pull the jumper bars on the amps, the output on the pre-out (remote out) seems to be very low level and I am not sure I can balance the HF and LF outputs to make this work? Of course, I will remove the jumper bars on the speakers as well.

My question is, can I pull the jumpers on the “remote out” and “Pre-amp input” on both amps and then connect one amp to the other and wire the speakers in bi-amp mode?

I contacted Roksan and their answer was too vague for me as they said I can do this “If the amps are wired correctly". Not much help for a newbie...... Any help would be very appreciated.

Than you in advance,

Bryan


voiceofvinyl

Showing 2 responses by voiceofvinyl

voiceofvinyl's avatar
voiceofvinyl OP
93 posts
 
@knotscott. Thanks for the reply. I'm afraid I don't quite understand the "vertical' bi-amp approach. In this approach, I have to keep the Right channel outputs of each amp connected to the right speaker, one set for the highs and one set for the lows, conversely for the left?

Also, how do I feed my front end phono and CD player? There are only one set of left and right outputs from these components. Do I pull the pre-out and pre-in jumper bars?

Sorry to be such a novice at this but I am trying to do this right.

Thanks.
voiceofvinyl's avatar
voiceofvinyl OP
93 posts
 
Thanks so much for the advice guys. I will start experimenting with this.

BTW, I picked up a KORG DS-DAC-10R AD/DA converter (new) to rip some vinyl. It also appears to function as a pre-amp. I am using a Luxman TT with an Ortofon Blue MM cartridge. Would using the KORG be better than the Roksan on-board phono section? If so, where do I clamp this, to the Tape In or one of the Line Inputs?

Thanks again.
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