In Reply to: DIY Center channel posted by Oscar on April 20, 2001 at 21:59:31:
It's desirable for the center channel to have the same timbre as the left/right channels so you should use drivers from the same manufacturer. I'd say 6" woofers should be adequate but if you can fit 8-inchers, why not? But if you go with 8", I would use a three-way design. In fact, if your design is in the MTM configuration and the center is on its side, then definitely use a three-way even if you stick with 6" woofers. MTM's have very poor dispersion when used this way and a three-way with the tweeter above the mid, flanked by the two woofers, would be a very desirable alternative. The drawback of course is three-ways are a bigger design headache. As far as your decision to use the center full-range, I'd experiment and see what sounds best to you. I do have a question about "blowing out" your old center with too much amplification. Usually, it's just the opposite. Amps blow speakers when they're driven into clipping and the resulting distortion fries the voice coils. Usually the tweeter goes first, but I have the distinction of blowing woofers too.
I am guessing MTM stands for mid/tweeter/mid ?? My mains are 3 ways and I have "foresaken" the 12" woofers in the interests of having a TV in the center as part of the HT setup. You are suggesting a 3-way (full-range) but I am not sure this would be necessary;especially if I decide not to go full-range in the centers. Still have small surrounds I plan on replacing with full-range Dynaudio kits.
The center speakers had worked "adequately" for the past 5 years. Then I upgraded the electronics and went to DTS soundtracks. I did not have any real issues until I tried to run these with CA-200 (200/8, 400/4 per channel) run in bridged mono and/or my friend's Sunfires 5-channel amp with 4,000,005 "Bobwatts"/channel...
Thanks for the advise. I will certainly consider this.
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