View Full Version : Bi-amping SDA's ?
07-30-2002, 04:27 PM
When you bi-amp the SDA's....do you need to run the AI-1 or is this just needed for mono blocks and bridged amps?
07-30-2002, 04:59 PM
Only for Mono block. If you ahve an extra AI-1 I will take it.
07-30-2002, 05:03 PM
As long as the amps are the common ground type and are by the same maker (same specs) you don't need the AI-1. If in doubt about being common grounded check with the manufacturer. Make sure that you remove the jumpers on the speakers binding posts. Did you pick'em up already?
07-30-2002, 05:10 PM
If you ahve an extra AI-1 I will take it.
hoosier...I'm onlygetting one so I will need to hold on to it until I know for sure I won't need it.....:(
F1nut....looks like we are a go for Saturday? Not for sure on that though....:confused:
07-30-2002, 07:55 PM
As long as the amps are the common ground type and are by the same maker (same specs) you don't need the AI-1.
F1nut.....to follow up on this...they are the same. The best set-up would be one amp for left and one amp for right? This still looks like there is not a ground between the 2 channel? Am I not thinking right?
07-30-2002, 11:58 PM
Ok, I'll do the best I can......
You use one amp for the high frequency and the other for the low.
AMP 1 Highs - run a speaker cable from the amps right output (positive & negative) to the top inputs (pos. & neg.) of the right speaker. Run a speaker cable from the amps left output (pos. & neg.) to the top inputs (pos. & neg.) of the left speaker. You have now connected the high frequencies.
AMP 2 Lows - run a speaker cable from the amps right output (pos. & neg.) to the bottom inputs (pos. & neg.) of the right speaker. Run a speaker cable from the amps left output (pos. & neg.) to the bottom inputs of the left speaker. You have now connected the low frequencies.
MAKE SURE YOU REMOVE THE JUMPERS from the binding posts on the speakers before bi-amping.
Since both of your amps are the same (make sure they are the common ground type, most are) you will not need the AI-1. Hook up the pre/amp and source(s) and turn up the volume.
Hope this helps.
07-31-2002, 12:45 AM
Yeah......I understand hooking it up either way. To me it looks like the best way to hook them up is to run L pre-out to one amp and use that amp to run the high and low freq for the left speaker. Do the same for the R side. I think then you would need to use the AI-1? Do you see what I mean? Amp A will run the left speaker and amp B will run the right speaker. Is this not the best way to set them up?
07-31-2002, 02:14 AM
Originally posted by nascarmann
Is this not the best way to set them up?
No, I dug out the Polk manual and they recommend setting it up like I posted. "In Polk We Trust"!
07-31-2002, 09:02 AM
10/4 ON THE MANUAL......:D
07-31-2002, 12:19 PM
Half of the fun (and most of the frustration) is trying it all the different ways.
07-31-2002, 01:19 PM
Agree madmax....but I don't want to damage the speakers! Your input would be appreciated............;)
07-31-2002, 11:20 PM
I've tried mine both ways. So long as you use the AI-1 with the SDA's while driving seperate channels (one amp driving left and another driving right) you wont damage anything. I wont say which is better because I keep trying them both ways. Each way is better in some aspects. So far I have not used the interface because my amps don't seem to have any potential difference between the grounds. I think.
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