On 12 Jan 2007 14:02:58 GMT, Kalman Rubinson wrote:

On 11 Jan 2007 23:30:11 -0800, "max graff" wrote:


Eeyore wrote:
max graff wrote:

Hi Phil,

Yes I am aware of 'active' subbys and have a couple at my place.Al of
them however have been connected to my Marantz 6.1 integrated amp .

In my friend's case the only two speaker outputs are left and right.
Hence my question how do I get subbys to work on a two channel amp.

Connect them to the two channels !

Graham

Graham,

You mean in series with the mains?

Not exactly. What your friend needs is 1 or 2 subs with a
speaker-level crossover. Then, he can connect the main amp outputs to
the sub(s) and then connect the main L/R speakers to the crossover
outputs on the subs. Thus, the crossovers will divide the frequency
spectrum appropriately.

For this, I prefer powered (built-in amp) subs so that they do not
draw any significant power from the main amp. Whether he needs one or
two depends on how low he can make the crossover and his room
arrangement/acoustics. Most can do just fine with one better sub than
two cheaper ones. I personally recommend those with equalization to
compensate somewhat for room modes.

Kal

I would add that finding an ideal position for one sub is hard, and
right positions for two are near enough impossible. Provided there is
very little distortion and the crossover frequency is sensible, there
is no benefit to having a pair of subs - you can't locate the sound
anyway.

d

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Pearce Consulting
http://www.pearce.uk.com