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Help Anyone?

LPD

LPD

AK Subscriber
Subscriber
Ok here's the problem. The wife went shopping for a new stereo cab/tv stand and returned with a new stand with doors to close stereo away from little fingers. The original stand was 15 inches high and 24 inches wide and 3 feet long. The new stand is 30 inches high and 26 inches wide and 3 feet long. I plugged the stereo in and now I have lost some of the punch in my bass. Actually I've lost alot of punch in the bass and when I stand next to the stand in between the speaker I can feel lots of bass, but it seems to be trapped in behind. What the hell happened? I'm going to put the other stand back on the weekend to see if this stand is the cause of this effect, but the wife is not too flexible on changing stands!! Any ideas?
 
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Hi,

Check to see when you moved and rewired everything that you didn't change the polarity on one speaker, thus putting you out of phase and destroying the bass (most easily heard). Your stereo image should also be very vague and diffuse.

Easy ways to check - if you have a mono switch or source, use it and see if the image collapses to the middle or stays diffuse.

Reverse 1 channel's leads from power amp to speaker, doesn't matter which one. If bass returns, than speakers were out of phase. To have absolute positive phase (+ input to speakers = cone moves out), you will have to be sure to trace the amp outputs + to + on the speakers on both sides.

Occasionnally a source is hooked up out of phase due to incorrectly built interconnects or the phono cartridge is wired wrong to the headshell.

Let us know what happens.

Regards,

Bart
 
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