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Old 10th March 2007, 02:30 AM   #1
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Default Fostex FR's and amplification (LPA-1)

So I'm needing to get a new receiver (I'm probably 50-60/50-40 music/HT) and am looking for some input. I'd like to try out some Fostex drivers, but the consensus is my Yamaha receiver just won't cut it. I'm wondering, though, what people think of the Emotiva LPA-1 amp? Looks well constructed, good power and has a dampening factor of around 200. Not sure how DF fits in with sound but I've heard it referenced several times as being one of the benfits of tubes = low DF. For the price, the amp looks intriguing, but I'm hoping to get your opinions.

Thanks,
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Old 10th March 2007, 03:13 AM   #2
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My 1st inclination. Pretty but boring.

Way too much power on top of that. 2-7 channels of a nice tube amp, or Class D would be a better match.

One also has to ask what is being given up to get 6x125W channel for such a low price. One has to wonder if it is really just an expensive boat anchor.

Also keep in mind that it is the 1st watt that counts the most and that, as a generalization, the smaller the amp the better chance it has of sounding good. With the FE126 or FE127 speakers i commonly have in my HT the 4-5 watt amps i have seem just fine.

Highish output resistance" on a FR like the Fostex fills in the top & the bottom where they need a little help.

*damping= (impedance of the speaker)/ (amp output impedance)

A single number damping is a misleading number as both the terms to the roght ate a function of frequency. Throw the speaker wire intot he mix and it is a couple steps away from being meaningful.

dave
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Old 12th March 2007, 09:45 PM   #3
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Take a look at The First Watt site ( Pass Labs) and read what Nelson Pass feels about high damping factor and single drivers without a crossover. I don`t believe high damping factor is necessarily a good thing with Fostex fullrangers.
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