Originally Posted by mjaudio
For the EP4000 in bridged mode the Dip switches should be like this:
1: to the left
2: to the right
3: to the right
4: to the right (this would be parallel)
5: to the right (this would be parallel)
6: to the right
7: to the right
8: to the right
9: to the right
10: to the left
So all your mode dip switches to the right except 1 and 10 which will be to the left. Dip switches 2 and 9 actually don't matter once you turn off the low cut filter 3 and 8 but it just makes it easier.
I am not surprised you get output when connecting to input 2 if you have your dip switches set up for parallel inputs, I haven't experienced it my-self though.
They aren't set up for parallel inputs. Your method would be. I had them setup for stereo.
I have it setup this way.
1) clip limiter - left (off)
2) left (irrelevant)
3) low cut filter - right (off)
4) stereo/parallel - left (stereo)
5) stereo/parallel - left (stereo)
6) bridge mode - right (on)
7) bridge mode - right (on)
8) low filter - right (off)
9) left (irrelevant)
10) clip limiter - left (off)
As far as the stereo/parallel switches, it specifically states in the manual;"Mono bridged mode switches must be disengaged when running in parallel mode".
XT32 is great but none of the auto calibration programs work that great on getting sub levels right IMO, it is always best to go back with an SPL meter and dial it in your-self.
I agree. I will go back and tweak once I get it up and running properly
You have to watch for phase cancellation when using multiple drivers. You can try the 9volt battery test but you will need a helper because one person has to hold the 9volt battery to the binding posts while the other looks to see what the drivers do. You can also do this by your-self by running speaker cables to the front so you can hook up the battery and see what the drivers do. When you hook up the 9volt battery to the terminals with + to + and - to - the drivers should move out in the same direction, when you reverse that to + to - and - to + the drivers should all move in the same direction. Do this to both cabinets and make sure the drivers move in the same direction which means if + to + and they all move out then both cabs need to be in unison, if not then they are canceling each other out and you will hear no bass.
I hear bass, it's just not that strong. It's just about on par with my Ultra which surprised me. I'm only testing with music but that's my initial impression. I'll check the polarity, but I was pretty careful when wiring these up.