Opinon on sub connections...

[RH Customs]

I have experimented on connections for my B&W sub and have not really decided on an optimal connections. Which is better "sub out" , line level, or speaker connections then running back out to the mains?

Thanks
RH

[chanorama]

Using the speaker level inputs isn't recommended because of the higher noise/distorsion levels. Sub out, and Line out are both "line level" and the only differences have to do with the receiver/amp/eq you are using. Some sub-outs only output below a certain frequency, while others may be full range, and will depend on the sub's crossover to filter the higher range. I'm not familiar with your setup, but if you need to protect your smaller front speakers from lower frequencies, there are a few ways to do it, but it depends on what capabilities your equipment has. It will help you a lot if you can find out, A: your receiver's sub-out frequency settings, and B: Does your sub-amp have a "high pass" line level output. If your Receiver has a setting that allows you to send the lows to the sub only and the highs to the front speakers only this is the easiest solution. If your receiver/amp doesn't have that option, then the next easiest way is to use the speaker level inputs to the sub then the high pass speaker outs to your fronts. This will protect your front speakers from low frequencies, but as I said before, this will mean higher noise/ distorsion. If your sub-amp does have a "high pass" line output, and you are using a "dedicated" amp for your front speakers, then you can send the highs to that amp from the sub amp. This is more complicated, but cleaner than using the speaker level in/outs. Hope this helps! Chano

[RH Customs]

Cool that is what I thought. I'm running a B&W DM 303's and a ASW 300. The sub us running off the pre out via a Vampire rca split adapter on a NAD 320 BEE, but I will be getting a 350 and use the open pre-outs.

RH