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Hey Martin419, how much amplifier power do you think I really need?

Since you seem to think my current setup is "overkill" for my "modest" room, you may want to try this calculator I found over the Internet.

In my case, my speakers are 2.3m away from the listening position, and the front speakers are rated at 90dB SPL @ 1 watt @ 1 meter.

Music can be as loud as 110dB SPL

Plugging these figures into the calculator shows that I need an amplifier with a staggering power of 1055 watts just to get to 110dB!

However, that's just for one channel. In a stereo setup, I need 3dB less (since 107 + 107 dB adds up to 110 dB). Also, I place my speakers fairly close to the wall, so I'm probably getting an additional 3dB in terms of sound reinforcement from reflections.

So, I probably only need each amplifier to generate the equivalent of 104dB from each speaker. Recalculating shows that I need a power amplifier that can generate 265 watts.

Perhaps by coincidence, my Musical Fidelity A5cr power amps are rated at 255 watts per channel in 8 ohms.

So, do you still think my amplifiers are overkill? It seems to me that they just barely scrape through with enough power to handle the full dynamic range of music in my "modest" room.

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Topic - Hey Martin419, how much amplifier power do you think I really need? - Christine Tham 05:50:03 09/11/05 (36)
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