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

In article <MeCdndt7mNm3UULeRVn-gg@xxxxxxxxxxx>, "Arny Krueger" <arnyk@xxxxxxxxxx> wrote:
>
>"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.

I never made sense out of the term compression driver.

All drivers do create compression.
and that other way.

greg
.

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