Programmable Active Crossover(analog)

[RCBandwidth]

Hello: The design goal of any piece of audio related equipment should be that installed components should not alter the sound quality in any way.Any electronic component will always change the original signal in some way.The audibility of any distortion is what's important(IMO).

The only thing "Digital"about these pots is that their ohmic value is controlled by software commands.There is no digital conversion of the audio signal...I want to clarify this point for people not familiar with these devices.

The basic Filter circuit that was used is the Linkwitz-Riley 24dB/oct.I have built a few active crossovers using fixed value resistors in the past with excellent results,you can build an active crossover(analog) with specifications that are the equal of any commercial offering.

The basic question you are asking me is how much will the replacing of fixed value resistors with "digitally controlled" pots degrade the sound.

I can report to you that I do like the "Sound" of this crossover if it does indeed have a sound.To my ears it does not distort the sound in any way that I find objectionable.The Speakers that I am using are drivers from Parts express, RS 7-inch woofer paired with a Planar tweeter.

I should also mention that I am able to download new crossover points during live listening with no audible switching transients!..
This is extremely beneficial when you are tweaking your crossover settings.

I will update with a progress report in the near future.


Regards Bob C.