BI-AMP front speakers

Rocco1
Rocco1 Posts: 190
edited April 2009 in Electronics
Has anyone ever BI-AMPED their front speakers?
What i was thinking is using my onk 906 going from my pre-out left and pre-out right into 2 different onk m282 which push about 150/channel at 8ohms into some RTi-A9's.

1. Has anyone ever done this, and does it work?
2. how should I wire this?
a. Go from preout single AUDIO CABLE and split to a DOUBLE AUDIO CABLE
into amp left/right.
b. go from preout single to amp left channel on left amp and a seperate
right channel preout to right channel on the amp?

I personnelly thing that this would boom. Will it over power my center and surrounds though, because i would still run those off the onk906?
Man Cave: 7.1
-PS Audio Power Plant Premier
-PS Audio Power backup
-Onkyo Pre/Pro> 2 Adcom555se bridged and bi-wired> RTi A9s
> Adcom GFA 7605> CSi A6 center, RTi A3s side rears, FXi A6s rears
>Sub = MK Audio 10'
-PS3
-Onkyo 5 disc cd player
-Directv
-Samsung 59' plasma flanked by 2 Samsung 43' plasma's
Post edited by Rocco1 on

Comments

  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited April 2009
    Hello,
    I believe the connections you describe are the correct ones. You need to feed a single right and left to two power amps. Using a "Y" cable that has a male plug on the base and two female plugs on the two branches will do this. Of course you'll need one for the left and one for the right channels. Then regular RCA cables will go from the female plugs to the corresponding amplifier inputs. Then remove the binding post jumper plates from the speakers and make the connections to the upper and lower sets of binding posts.
    Your receiver's setup procedure will be able to balance all of the audio channels. Nothing should overpower anything else.
    Enjoy the improved dynamic range!
    Regards, ken
  • Dawgfish
    Dawgfish Posts: 2,554
    edited April 2009
    Rocco1,

    I am passively bi-amping my RTi-12s with great results. Do a search concernig active/passive bi-amping to get an explanation of the difference. Many people say you don't really get the full results of bi-amping passively, as compared to active biamping using an external cross-over, but I can tell a huge difference with my RTi-12s with passive biamping. Of course I believe the difference in performance is due to the increased wattage going to the speakers (450 wpc vs 250).

    Here is how I am connecting and wiring my fronts. I run a Y adapter (1 male to 2 females) off the right and front main preouts coming out of the reciever. I then run interconnects from the y adapter to the two amps (running one left channel interconnect to the left channel input of one amp and the other left channel interconnect to the left channel input of the second amp, repeat this setup for the right chanels with the two amps). I then remove the jumper plates on the speaker connecters of the two front main towers. I run the left speaker wires ( + and -) out of one amp to the top posts of the left main speaker and run the other left speaker wire (+ and -) to the bottom post of the left main speaker. I repeat this wiring process for the right main speaker with the right speaker wires from the two amps.

    I am currently using an Monster MPA-3250 to run the highs on the RTi-12s and an Adcom GFA-555 to push the woofers. I did this just to see what if. Ideally you want to bi-amp using the same amps as you plan on doing. This is because different amps may have different volume gain levels and thus the volume response of the two different amps may be different as volume levels are changed on your AVR/Preamp. I am happy to report that the two amps I am currently using seem to have the same gain factors. I decided to use the Adcom for the woofers becasue I get better bass response with the 555 and more detailed imaging with the Monster. I know this is not what a lot of people would recommend, but I tried it out of curiousity, loved what I heard and have kept if ever since. BTW, I am going to experiment using my other amps to do this, in different configurations just for grins and giggles as soon as a get some time. THat's what I love about this hobby, there's always something new to try and see what if.
  • Dawgfish
    Dawgfish Posts: 2,554
    edited April 2009
    Ken,

    Sorry about that I was busy typing away my post when you responded. but basically what Ken said ;-)
  • [Deleted User]
    [Deleted User] Posts: 7,658
    edited April 2009
    No problem, Dawg...
    I do the same thing.