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You can definitely feel the air flow coming out of the vents. I placed the tower speakers so they stay on top of the vent covers otherwise the covers would rattle.
I measured the THD with the vent covers in place. Surprisingly the pressure drop around the vents did not create significant distortion.
No chaffing sound is coming from the vent covers for those test levels.
I did not measure the excursion of the drivers but it seemed around 0.8 Xmax. The subs are capable of around 6-8dB more before hitting the Xmech. The sound quality remains almost the same until it hits the Xmech.
The main strengths of that system are:
1. VERY VERY LOW THD - around 1% from 8Hz - 37Hz.
2. The subs are totally out of view and wife really happy about that.
OMG, I still can't believe those numbers given whatever the average mass market subs THD measurements are (10% and up).
I did the readings few times over just to make sure. Than I pulled out the RatShack meter and its SPL reading was +/-1dB from the REW readings - so the UMIC was OK.
The bass sound is Clean and Detailed - no matter if the music is playing at 100dB or 70dB - you can always hear the bass standing out especially when the sub sound starts/stops.
It sounds effortless, quick, clean, with authority, no lingering after the sound is gone.
I measured the THD with the vent covers in place. Surprisingly the pressure drop around the vents did not create significant distortion.
No chaffing sound is coming from the vent covers for those test levels.
I did not measure the excursion of the drivers but it seemed around 0.8 Xmax. The subs are capable of around 6-8dB more before hitting the Xmech. The sound quality remains almost the same until it hits the Xmech.
The main strengths of that system are:
1. VERY VERY LOW THD - around 1% from 8Hz - 37Hz.
2. The subs are totally out of view and wife really happy about that.
OMG, I still can't believe those numbers given whatever the average mass market subs THD measurements are (10% and up).
I did the readings few times over just to make sure. Than I pulled out the RatShack meter and its SPL reading was +/-1dB from the REW readings - so the UMIC was OK.
The bass sound is Clean and Detailed - no matter if the music is playing at 100dB or 70dB - you can always hear the bass standing out especially when the sub sound starts/stops.
It sounds effortless, quick, clean, with authority, no lingering after the sound is gone.
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