Originally Posted by hoffdano
Originally Posted by BeeMan458
I am appalled that you think you would benefit from a capacitor between the amplifier and the speaker, but you have no idea whatsoever such a thing would do for the sound.
I'm not appalled because with some box/driver combinations a large series capacitor will add several dB response, which can work kinda cool if its right before the bass roll off.
"Subwoofer tuning with capacitor in series"
This author finds a ca. 6 dB benefit in some cases, which agrees with some of my findings.
It works with some box/driver combinations and is null with others.
The same thing can happen with midrange drivers and tweeters and result in undesired peaks.
I've seen these in commercial speakers. I'm sure they are completely intentional. I haven't seen any lately but the Acoustic Research AR-LST was one such speaker if memory serves.
Back in the days before +/- power supplies people would get completely blindsided by this effect because the big cap was there to block DC and was outside the feedback loop - about 4,700 or 6,800 uF. . The original Acoustic Research AR3 would pull this stunt.Edited by arnyk - 7/1/13 at 12:52pm