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Originally Posted by rj2 /t/1524214/linn-ninkas-and-qsc1500a-amps#post_24526559
Got some Linn ninkas and have a few QSC 1500A's, was wondering if I should Biamp.
Depends on what you are talking about.
If you are talking about this hookup:
http://www.lotus340r.net/manuals/linn/Linn-Ninka-user-manual.pdf
Then that is passive biamping and it will get you less than 2 dB more SPL based on an optimistic analysis. That's a barely audible amount of increase in max SPL. Seems hardly worth the trouble and risk.
If you are talking about this:
Then you can obtain better results and it might be worth the trouble. I recommend that you also have a good measurement system on hand such as one centerpieced by Room Eq Wizard (freeware) and a good measurement-type microphone for setting levels for maximum smoothness, etc.
Frankly, I've heard Linn-based setups like this that were adjusted by ear and I felt that the sound was gosh-awful. IMO it would have been better with the speakers hooked up the simplest possible way. However, with the right technical support it might be advantageous.
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Most of the posts , say not any advantage to speak of and really not worth doing . Doesn't make sense to me that all the speaker makers make it available and especially on the linn's with the reversing terminal plates.
I think that sometimes features like this are just hedges against loosing a sale to some other manufacturer who is able to get the sale by offering a questionable feature that is made up of a few pennies worth of wire and speaker terminals.
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Also on the QSC's I thought hooking them up conventionally they are 8 ohm , do they go into 4 ohm automatically when hooking up 4 ohm speakers?. Thanks RJ
Really robust amps like the QSCs are usually designed to thrive with 2 ohm loads per channel, let lone 4 ohm loads. They are loafing with 4 ohm loads. They don't need any internal or external adjustments to happily do what they do.