Good morning and thankyou for the reply,
I initially bought the speakers and a Numark Dimension 4 amplifier in 2005 for a few bands i was doing the sound for, http://www.numark.com/images/product_downloads/dimension3_referencemanual.pdf
initially all the speakers were running off the one amp, into the sub, and out to the tops units, but this didn't give a lot of control of the mid frequencies, so I picked up an XLS 202 which i was using for the top units only the numark amp is pretty bad full stop but seems to be good at pushing the subs and has a sub output, i am happy to continue with this as the subs and the numark will be the next upgrade due to weight.
The system is now only used for DJ'ing at small events, for around 100 people, to be honest it does fill the room pretty well at half volume and 2 subs is overkill as the top cabinets are full range
I have not actually used the XTI 4002 out at an event as yet, i have hooked it up at home, at low level, and updated the firmware in band manager to clear the resetting issue, but thats about it.
Ideally i would like to buy new speakers, hopefully something a bit easier to transport around but this will be around September and I have 3 events to do the DJ'ing for before this.