Hi Ash. No EQ was used, during listening just a JBL M553
using a summed low output, set to 80Hz lowpass, internal 15Hz highpass,
run into a (knowingly too small for digital cannons) bridged 6230, which
should have been good for ~300w. I turned the volume down a small
amount and replayed the old Telarc CD (ca 1979?)... no more clipping.
It was expected. I never really listen at that level. I didn't feel like hauling
out the 6290
Spectrum-wise, the cannons should be fairly wideband.
Thanks for the kind words Jeff.
-grumpy
Plot below:
Purple: 2242H/4518 1m, on center
Light Red: 2242H/4518 driver, near-field
Green: 2242H/4518 port, near-field
Red: 2245H/4518 1m, on center
Orange: 2245H/4518 driver, near-field
Blue: 2245H/4518 port, near-field
Much of the 1m measurement is room. No EQ or crossover in place for measurement.
Interesting part is the similarity in response/tuning between drivers. Box tuning is
spec'd at 30Hz with this (3-port) version of 4518 cab (1st gen 4645).