Low Frequency Filtering (Off Topic)

by Bert , Monday, April 24, 2006, 00:24 (6576 days ago) @ jdubs

Hi Jim,

I'm currently using Oris 150s with AER MD-3 drivers.

Do you use the passive line filter approach or do you use an active filter for the bass?

What is the best way of accomplishing this?

If you use the passive line filter then you could add a effective 12dB passive filter in between the AER and the connections going to your bass amplifier. To make this filter work you'll also have to add an RCL impedance correction to reduce the impedance peak around 150Hz. If you do not do this then the filter will not work properly and is practically boosting this frequency....

If you have an active filter then the most simple way is to add a passive line filter in front of the amp that is driving the AER's. In that case there is no problem to expect with impedance peaks.

This peak is not always the same, it changes when you use the back cover or not and if you use the reflex port or not....

How is your back chamber configured?

Ciao,

Bert

--
BD-Design - Only the Best!

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