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Old 29th April 2009, 06:37 PM   #1
Rixsta is offline Rixsta  United Kingdom
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Default Class A amp and Minipod speakers

Hiya

Just wondering if anyone knows of or can recommend a "class a" amp
to drive thise minipod speakers
http://www.podspeakers.com/Products/Minipod.aspx

Shape 2 way reflex, abs cabinet.
Applications Stereo arrangement, AV, 5.1, multimedia, near field monitoring for studios.
Frequency Minus 3db at 55hz and 22khz.
Sensitivity 90db spl (1w @ 1m) 4 ohm.
Sound Compatible with amplifiers from 10w - 100w output.

Cheers
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Old 1st May 2009, 03:48 PM   #2
Dr_EM is offline Dr_EM  United Kingdom
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Interesting speakers, sure I've seen them before somewhere. I think they're in one of the apartments in Freinds or something obscure!

Anyhow, on what criteria are you basing your choice to use a class-A amplifier with these speakers? Is it something that's been reccomended to you?

Class-A isn't especially popular as it is highly inefficient so costs a lot to manufacture and to run. Most commercial amps are class-AB. Class-A may indeed give you the best performance as it eliminates crossover distortion, but debatably this is insignificant in modern well designed class-AB amplifiers.

These speakers arn't optimum candidates for class-A amplification I wouldn't say. The sensitivity is quite average and the 4ohm load is not one which class-A amps typically drive (most Hi-Fi ones are designed for 8ohm).

I can't really think of any suitable class-A amplifiers for these, though you could build one if that was something you wanted to do (good electronics experience needed really)?

Otherwise, pick up a good typical class-AB or class-D amp of which there are many options around!
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Old 1st May 2009, 06:22 PM   #3
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Have you checked the 'Pass Labs' section? Should keep you busy long enough for the urge to pass. A Zen v1 or beyond will be much better than these deserve. I have a 4-channel Zen v1 that drives easy 4 ohm loads pretty good from a single channel and even better when paralleled. It's a simple circuit that is not critical about exact component values or ps voltage and can be 'de-tuned' for a less-than-huge heat sink. Perhaps you've heard of it? Zen...
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