Hi guys, just got back from travelling - a wonderful visit to FL where Alan Kimmel and I had a powow about the ModWright Amplifier that we are planning to release by year end...
Okay, first of all, the SWL 9.0SE does inverts absolute phase. Both channels are in phase with each other of course, but the absolute phase of both channels is inverted, due to the use of a single gain stage. A single gain stage is sonically pref errable and I will not apologize for the use of a single gain stage in the unit.
When the unit is used in HT/BP mode, it is true that the absolute phase will NOT be inverted, because there is no active stage present.
I agree that absolute phase does effect the sound, but it is also perceived by some more than others. I can't say why this is the case, but while to some it is a very significant and audible difference, to others it is not.
My logic when designing the 9.0SE was that the HT/BP feature was an added convenience for use with Home Theater, where I did not expect the phase difference to really have significant effect - i.e. the convenience outweighed the possible negative effects. The 9.0SE is our first production unit and is reasonably priced and offers an extremely high level of performance. We could only do so much without significantly raising the price.
The LS 36.5 - our new high-end linestage that will be available in April - does have a single set of balanced inputs and a single set of balanced outputs. It also has a full complement of single-ended inputs and two sets of SE main outputs and a tape output. Phase inversion will be possible for both SE and XLR outputs, both on the front control panel and via the remote control.
I am sorry to see that this has turned into a somewhat heated debate, but I wanted to clearly confirm the facts about the unit, that in HT/BP mode, the FL and FR outputs from your amplifier will be in-phase, i.e. relative phase will not be inverted.
Another interesting point that was brought up was AC absolute phase polarity. I agree, that when using cheater plugs and physically modifying AC plugs, you are risking violating your homeowners insurance, etc. and this is simply NOT advisable.
Thanks and I hope this clears the air at least about the ModWright SWL 9.0SE. I know that the issue of absolute phase will always remain a source of some discussion and debate.
Take care,
Dan W.