Hey Guys,
Found this method for checking for correct sub polarity, having a hard time understanding #2. Forgive my ignorance.
1. Reverse the polarity of the left speaker by swapping it's leads.
2. Start playing your pink noise source into the left speaker and sub. You will want to disconnect all other speakers temporarily for this test.
3. With the SPL meter fixed at your LP (and having set it to SLOW speed and C-weighting), note the SPL meter when the phase is 0
4. Start changing the phase and note the SPL readings.
5Pick the phase angle that gave the minimum SPL reading.
6. Reverse the speaker leads to their normal positions and reconnect the rest of the speaker system.
* Since the needle on the SPL meter usually bounces around a bit while measuring bass frequencies, it's often easier to find the minimum SPL using this method instead of trying to find the max SPL.
OK guys, I pretty much understand all this except #2, it says to play the pink noise source (I assume the tone is generated from the AVR) into the left speaker and sub, this is where I'm confused. How do you play the pink noise signal simultaneously through left speaker and sub at the same time, what am I missing?
Like I said earlier, forgive my ignorance. Thanks guys for the time, I look forward to a simple solution to this query.
Cheers, Jeff
