Hi Al,
Interesting post. Thanks.
A question. While I agree the dynamic range of a recording will set the pace on what multiple of power is needed, few of us will know what that recorded dynamic range is? Therefore some suggest that amplifiers should have x dB of headroom to cope with transients. 10 dB is often cited. Any comment on that?
Further, do you put any stock in power calculators which are available online?
For the OP's example a 25 watt amplifier with 90dB sensitivity speakers assuming a listening distance of 3m means a max output of 100dB SPL at listening position. OK for new age music and soft jazz but depending on listening habit not enough for unclipped orchestral, pop or rock.
Interesting post. Thanks.
A question. While I agree the dynamic range of a recording will set the pace on what multiple of power is needed, few of us will know what that recorded dynamic range is? Therefore some suggest that amplifiers should have x dB of headroom to cope with transients. 10 dB is often cited. Any comment on that?
Further, do you put any stock in power calculators which are available online?
For the OP's example a 25 watt amplifier with 90dB sensitivity speakers assuming a listening distance of 3m means a max output of 100dB SPL at listening position. OK for new age music and soft jazz but depending on listening habit not enough for unclipped orchestral, pop or rock.