Originally Posted by cecaa850
I just got off the phone with Crown technical support. They said the 1000 has a selectable, adjustable low pass and high pass filter. Either will work in the bridged mode. It also starts rolling off 6dB/octave below 20 Hz. Looks like it should work in my application.
Has something changed? The manual I reviewed indicated that:
"The PureBand™ Crossover System provides a variable state Linkwitz-Riley 24dB/octave ﬁ lter allowing you to choose a point
between 50Hz and 3kHz on 1/12th octave centers. The following points are available for choice:
50Hz, 53Hz, 56Hz, 59Hz, 63Hz, 66Hz, 70Hz, 74Hz, 79Hz, 83Hz, 88Hz, 94Hz, 99Hz, 105Hz, 111Hz, 118Hz, 125Hz,
132Hz, 140Hz, 149Hz, 157Hz, 167Hz, 177Hz, 187Hz, 198Hz, 210Hz, 223Hz, 236Hz, 250Hz, 265Hz, 281Hz, 297Hz,
315Hz, 334Hz, 354Hz, 375Hz, 397Hz, 420Hz, 472Hz, 500Hz, 530Hz, 561Hz, 595Hz, 630Hz, 667Hz, 707Hz, 749Hz,
794Hz, 841Hz, 891Hz, 944Hz, 1.00kHz, 1.06kHz, 1.12kHz, 1.19kHz, 1.26kHz, 1.33kHz, 1.41kHz, 1.50kHz, 1.59kHz,
1.68kHz, 1.78kHz, 1.89kHz, 2.00kHz, 2.12kHz, 2.24kHz, 2.38kHz, 2.52kHz, 2.67kHz, 2.83kHz, 3.00kHz..."
Seems to me that there is no option to high-pass below 50 Hz there, and the amp's 6 dB/oct rolloff below 20 Hz isn't really a highpass filter.
That being said - I just took a look at the simulation, and in this case, it might just work.
For some reason, I can't get the screen-shot to embed, but it appears that the amp's roll-off might keep the driver within xmech at full tilt.
Not how I'd recommend doing things, and not how I'd run mine personally though.