i'm not sure on the dimensions of the box to be right. i will measure the box and port size to be sure tomorrow. i don't have a problem, just noticed that kicker highly recommends a subsonic filter so that the subs last longer. Most phono preamps are designed with a switch that you can use to turn the filter on and off as you wish. The typical Tschebyscheff resonance of 0.1 dB does not cause any distortion. Frequencies blow 10 Hz are attenuated by more than 35 dB. This filter has a very sharp cutoff character. These rumbles are not heard themselves, but they can distort other frequencies in the audio that you are listening to. The subsonic filter is actually an active Tschebyscheff high pass filter of the fifth order.
Subsonic filter for sa 12 driver#
A driver is commonly installed in an enclosure (often a wooden cabinet) to prevent the sound waves coming off. The low-frequency vibrations result from warped records can be blocked by a subsonic filter. It wouldn't do much good to filter at 20 Hz while the subs are tearing themselves apart at, say, 39 Hz.Īlso, post what description of problems you are having.that you are looking for a low frequency filter. 12-inch (30 cm) subwoofer driver (loudspeaker). The SA1000 has the power to drive even the most power-hungry subwoofer systems. You're going to want to filter at about the tuning frequency for ported woofers. Post what you got.did you buy this already set up.make it yourself.a buddy did it for you.whatever. Harrison Lab FMOD-900073 (20 Hz high-pass filter)Gold-Plated20 Hz High-Pass Filter-3 dB point 20 Hz25 Hz : 25 frequency increase at 10K ohms17 HZ : 15 frequency decrease at 47K ohmsThis high-pass filter is supposed to cut frequencies below 20 Hz, as we know the human ear can hear from 20 Hz to 20,000 Hz, so frequencies below the 20 Hz point can't be heard, and usually most speakers will. Who built the box for these subs, and how did he port them? In order to port an enclosure, he had to first determine what box tuning frequency he wanted to use.
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