Re: Power rating on LF/HF units. Rv!


"Don Pearce" <donald@xxxxxxxxxxxxx> wrote in message
news:43e2c6c8.45099703@xxxxxxxxxxxxxxxxxxxxxxx
> On Tue, 31 Jan 2006 21:21:31 +0100, Peter Larsen
> <SPAMSHIELD_plarsen@xxxxxxxxxxxx> wrote:
>
>>Don Pearce wrote:
>>
>>> I've recently looked at a dozen or so modern music files in Audition,
>>> applying low and highpass scientific filters (3rd order Butterworth)
>>> at 2kHz, to see what power would go to a woofer and tweeter
>>> respectively.
>>
>>> Interestingly, the peak level is identical for both - meaning that the
>>> woofer and tweeter amps would need the same power rating (they
>>> actually produce volts - the power is merely a consequence). Average
>>> power levels, though are a different matter, being about 6dB greater
>>> for the woofer and the tweeter. That would mean that a 50W tweeter
>>> would merit a 200W woofer for a balanced system.
>>
>>You omit the sensitivity differenc from the calculation, mostly some 6
>>to 10 dB in case of a bass reflex lower range unit and a compression
>>horn upper unit.
>>
> Sensitivity difference, particularly those horrible horns, is
> something I neglected. The rest still stands, of course.

It turns out that the sensitivity difference comes from the compression
drivers, not the horns. The horns just make the compression drivers work
better at lower frequencies. There are such things as horns that sound quite
good.


.

Quantcast