Magnepan MMG with ICEPower amplifiers

[Dawnrazor]

Dawnrazor:
If the mylar is on the front Magnepan has already latched onto that tweak. As for changing the plu and minus speaker connections; that's a question of absolute phase. You might want to try reversing the connections anyway. If you and your system is sensitive to absolute phase one way will sound better. It's possible you may hear better sound with the connections reversed. This applies to both speakers. You want them to be in phase with each other.
This means that connecting plus to plus from amp to speakers doesn't necessarily mean that you have preserved absolute phase. The number of stages in the entire amplification chain determine absolute phase. For instance some power amps have 3 stages, some 2 some have 4 or more. The number of stages in the preamp also count. Each stage reverses phase.
Preserving absolute phase is a much discussed and not always agreed on tweak. As with this and other free tweaks your ears and your system should be the judge.

Sorry Joe, I wasnt clear. I wasnt actually saying to try absolute phase AS A TWEAK. Merely that if one was going to listen to the other side of the speaker TO RULE OUT Absolute Phase in the listening test, one should swap the speaker connections on both speakers. Otherwise any conclusion might be more a conclusion about absolute phase rather than listening to the mylar or not.

And I am betting that if he gets them, Krishna's mmgs will be different from mine in that his will have the 1st/ 1st config for the crossover and not the 2nd/1st config of the first version of the mags. On the first version the tweet is out of phase with the bass panel and this makes it nearly impossible to hear absolute phase differences, but not so on the 2nd one.

[JoeE SP9]

Sorry Joe, I wasnt clear. I wasnt actually saying to try absolute phase AS A TWEAK. Merely that if one was going to listen to the other side of the speaker TO RULE OUT Absolute Phase in the listening test, one should swap the speaker connections on both speakers. Otherwise any conclusion might be more a conclusion about absolute phase rather than listening to the mylar or not.

And I am betting that if he gets them, Krishna's mmgs will be different from mine in that his will have the 1st/ 1st config for the crossover and not the 2nd/1st config of the first version of the mags. On the first version the tweet is out of phase with the bass panel and this makes it nearly impossible to hear absolute phase differences, but not so on the 2nd one.

I agree about ruling out absolute phase when trying different sides of Maggys. However absolute phase is usually very difficult to hear while the difference between the sides on Maggys is very easy to hear.
After the speakers are dialed in with some good associated gear then may be the time to listen for absolute phase. As I said already, it's very difficult to hear and most recordings especially heavily processed studio recordings will show little or no (usually none) audible difference.