Axiom Home Page Forums General Discussion Technical Questions EP350v2 versus EP350v3 specs

Google says there are:

XLR Splitter 1-Female to 2-Male

I know that at Mojo's, we are unable to daisy chain as the input impedance on the 600 is too high and we are not able to run the second sub at equal SPL due to the cut down signal. Knowing this, I would go for the Y-splitter at the receiver,

I gotta wonder if there's something wrong with Mojo's sub (this is going to be an expensive post...). If axiom put the pass throughs on the sub, they should work properly. From what Alan's said, they're essentially just a y-connector inside the sub--you can plug into either one for input!

I had this same problem Jason, but with my current amp I do not have that problem with my 600. I don't think this problem is related, could be wrong then.

I guess Mojo should try one more new amp then.

I mentioned this before- when I had dual 500's for a few days I daisy chained them together... The first one had to be set at 6 oclock, but the second sub that was daisy chained off of the first had to be set to at least 9 o clock to get the same output. A small part of this may have been from placement but not much.

Is this normal? Could this be avoided by using a Y splitter?

I want to order a ep600 to pair with my ep500 and want to know the best way to approach this.

Thanks!

I don't believe there's a manufacturing defect with my amp. I've had a number of them now and they all behave the same way. Sure there's a Y-splitter inside but it doesn't somehow magically negate the amp's input impedance. Neither does an external Y-splitter.

So I understand that when you unplug the 25 ft. coax, the output on your 350s increases?

If so, I am not surprised as I've explained before.

Yes, I believe that is what I'm saying. The below graph is an old one with just a 600 up front, but it will help explain what I'm seeing. An interesting note is that my graph is not as flat currently with the 350's up front and the 600 in back, which kinda goes against what Dr O'Toole and Ian have been stating about using subs up front and in back?

Anyway, when I unplug the 25ft coax from the LineIn on the 600 with the 600 turned off and unplugged, the graph from about 30hz to 50hz spikes up to 87dB's on the graph, basically a straight line across those frequencies. As soon as I plug it back in it looks how it did previously.



When Jakeman wanted me to calibrate each sub individually, one at a time, and then plug them all in, I assumed I would still have the coax lines hooked up, just power the subs off/on one at a time.

When you unplug the 600, the impedance that your Denon is seeing goes down. Hence its output goes up and that's why you are seeing the spike. The 600's input impedance is sucking down your Denon's output...just like it's sucking down mine. Now don't ask me what design decisions lead to a low input impedance. Maybe Axiom was worried about noise...I don't know.