Quote:
Rodny Alvarez wrote:
 Collo and I conducted some testing via PM's to save cluttering up this thread. It was concluded that the airspeed was too low to account for the noises heard at 10hz. The most likely culprit was driver noise. |
Hi Rodny
What sort of levels dB(C) were you running at to hear noise at 10hz?
Was this on sinewaves? I'm wondering if the signal you were feeding it had heavy distortion which produced an audible harmonic.
I ran my IB array at 10Hz up to nearly 100dB(C) (uncorrected RS meter) using REW in the "Frequency follows cursor" mode.
The IB was completely silent though the room was shaking violently. I stopped at about 1/4" cone movement because I feared the windows would break if I pushed it any harder.
Are you sure your box or something else isn't vibrating in sympathy somewhere?