Bass leaves after amp warms up?

Are you?

Unnecessary. Comments like that are the reason I rarely look at this site.

BTW-Only one woofer was out of phase in my friend's system. The other speaker in the cabinet was in phase.

Why does it take time to perceive any difference? That could be due to musical content and aural acclimation. It took a while for me to notice the drop off at my friend's house depending on the musical mix, seating position, and volume level. Consider also that perfect wave cancellation can only occur with monaural material, so the musical mix plays a big factor in the listener's perception.

One of the reasons the old preamps had a mono switch was to help set the azimuth when mounting a phono cartridge. Wire one channel of the cartridge or speakers out of phase, place the preamp in mono and adjust the cartridge's azimuth till the bass response seemed minimal. This procedure works on the principle that wave cancellation can only occur when both channels are in phase, which can only occur when the cartridge is properly aligned. After the alignment procedure, the speaker or cartridge was restored to it's proper phase and the preamp was returned to stereo operation.

Sorry, couldn't help it. If it's any consolation, it wasn't meant for you. You should maybe read the whole thread. You might get a kick out of it:)

Heyraz, Do you think one woofer out of phase would only be noticeable after one hour of listening day after day?

Csontos' joke is necessary to keep things light. We need more light hearted comments like his to make the forum enjoyable. Afterall, we are not at work here. This is something we do for fun, right?

Heyraz, I can understand how you might take Csontos' post the wrong way taken out of context, but in context it was actually a harmless joke.
This thread as a whole is a great example of audiophiles and audiophile forums at their best. A very special thread indeed.

"This thread as a whole is a great example of audiophiles and audiophile forums at their best. A very special thread indeed. "

You mean as an example of how audiophiles tend to obsess on fixing their sound based on limited facts and thus spend vast amounts of time and money in the process? :^)