The next best Tweak ???

Ozzy - In the last line, it seemed to me Parts Express was saying all electrolytic caps are NOT necessarily polar.

Either way, non-polar or polar and properly connected - does it matter?

Ozzy - I read your post with interest. Trying cheap tweaks is definitely a fun part of this hobby. I'd like to try your cap/battery tweak on my speakers but want to be sure I understand how to implement it. Do I have this right?
1) Install the cap across the battery terminals (- to -; + to +).
2) From the negative battery terminal, run a single wire to the negative terminal of the speaker.
3) This set up is duplicated at the other speaker.

If I have it straight, seems like something even I can do.

Thanks in advance for your reply.

Thanks, Ozzy. It'll take a little time to collect the parts but I'll report what I hear.

Sgr - Thanks for your post. Appreciated your comments about sonic improvements on what looks to be a very impressive system.

A question for you and Ozzy - My speakers are bi-wired. I'm thinking to use a short jumper between the negative terminals of a given speaker and attach the lead from the neg. pole of the battery to the middle of that jumper. Seem like an OK approach?

Thanks in advance.

Hi Folks -
Was shopping on Parts Express for some caps. Saw some 10000uF but from the pix, not obvious how to tell poles. Submitted a question that got the following answer. Thought it might be helpful to post. Apparently not all caps are "polarized". From the little reading I did, a cap intended for use in an AC circuit can't be. At any rate hope the below is helpful. (it does confirm some of the info previously posted in this thread)

From Russ at Parts Express -
"If a capacitor is, indeed, polarized, then there are a few different indicators you can look for. If one lead is longer than the other, the longer lead will be positive, the shorter will be negative. You can also look at the end caps, the positive end cap will generally be black plastic, rubber, or some other insular material, while the negative will typically be aluminum. Many are also marked clearly, with plus and minus, or an arrow pointing from positive to negative, or a stripe on the negative side. The capacitor in question here is an electrolytic capacitor, non-polarized."