Originally Posted by sorue
What you've done is dangerous. The subsonic filter is there and caps are there for a reason. If your source passes through DC (can happen with computer sound cards), there's no protection for your tweeter and woofer. As for the subsonic filter, it is there to filter out the really low frequencies that can bottom out and kill your woofer. Tread cautiously.
Anyway, your speakers didn't 'handle' 10hz; all you heard was harmonic distortion from the amp, woofer or both.
I made no claim of even audibility of 10 Hz & 10 Hz would not be audible anyway no matter the speaker. As to the cap issues & the D.C. coupling as well as the removal of the subsonic filter I have been doing these things for years & I have never seen a computer soundcard fail in a way that put out huge D.C.. They just seem to cause problems with the functioning of the computer itself it seems due to data corruption when the processor starts going on the soundcard (all X-Fi based cards I've had). I have analysed the amp to woofer perameters & determined before hand that bottoming the woofer in my current setup would not be an issue I had to contend with (not enough power)
I poted the post basically to say that curren generation of 5" woofers can put out an amazing amount of bass for thier size
Also I would appreciate reading the whole post before addressing me as most of the issues you brought up about my post pertaining to what I claim were clear the way I posted them that I was not for example claiming audibility of 10Hz , quite the contrary I made it clear in my post that I was referring to not bottoming the speaker in spite of the removal of the subsonic filter. As to the tweeter I mentioned that the crossover was still intact for the tweeter in that outside D.C. could not reach the tweeter. Yes the tweeter amp is capable of D.C. amplification but D.C. is not allowed to get to the amp from any source.D.C. can get to the woofer amp though & I measured the D.C. offset & it was low enough to not be a concern.
Consider this, there are big name amplifier companies that do D.C. coupling as well. This is not as unusual practice as you may think & it is my personal feeling that it produces the best most neutral sound. I have taken amps that were very colored before hand & D.C. coupled them & they sounded identical to the source afterwards.
Edited by germanium - 11/17/11 at 10:29pm