Tri-Amping configurations

dschwark

Hi All, I just purchased my PA+, and am exploring setups for my amps and speakers...

Amps
2 Behringer A500 each run in bridge mono for left and right mains. Effect is stereo output
1 Technical PRO DA-B3000 run as stereo Subwoofer Amp

Speakers
Macky PSW18, and PSW15
Acoustic Audio GX-450 x 2

Mixer
Behringer 8 Channel

Previous Cross over
Nady CX22SW 3-Way Cross Over.

I had been running my system as described above. I was combining the high and mid between the crossover and the amps (left and right) by using a cable adapter for such purpose. I do this because I only have one 1/4 input on each speaker. It seemed to work pretty well, and really kicked some pretty good butt. The reason I went to the PA+ is I was having problems in different rooms tuning for good sound by ear. I hope the PA+ can help me save time in these matters..

Now to the real crux of the issue... When Tri-amping the PA+ configurations that I have read basically use each amp for a range of sound, IE one amp for sub, one for mid, and one for high. Is there advantage to configuring the system this way? In my system I still have to get the speaker input down to one 1/4 inch jack. I do this by combining the high and mid signals from the PA+ (previously CX22SW) The way I read the PA+ spec I would need two inputs into each main speaker(high & mid). Any way you slice it, I'd have to combine the high and mid signals some where along the line, then let the speaker crossovers split the signal in their normal manner. I would be very interested if there were another way to tri-amp my existing setup in the manner that dbx specs; I just do not see a way to do that.

Sorry the wordiness of this. I hope you can get my meaning
Thanks for any help
Dan

Gadget

Frequency Response: 27 Hz to 20 kHz

Now THAT is some funny s***
those tops couldn't do 27 hz in groups of 1000...but I digress...

Ok, Speakers set up for bi-amping have 4 pole connectors, or 2 1/4" connectors because the woofer needs to be on one 2 wire set and the horn/tweeter needs to be on the other 2. Of late this is accomplished (in pro audio applications) with a Neutrik NL4 connector. The 1/4" platform was abandoned by all serious speaker manufacturers more than 10 years ago...

Now I'm NOT bashing your speakers but with piezo horns... I bet they don't even have a crossover per-say.. only a capacitor for the lopass filter for the tweeter and nothing for the woofer...

Now, if you had speakers with a horn driver that actually went down to 2000 hz and handled even 20 watts.. then I could see doing a bi-amp ...but NOT with piezo tweeters...

What are these speakers?

Macky PSW18, and PSW15

do you mean ...?
http://www.mackie.com/products/srm1801/

Sorry dude but I'm not following your drift here...
Gadget

dschwark

Sorry, the subwoofer are Nady not Mackie. :oops:

Gadget

Being a Nady dealer I suspected so..but none the less...what about the rest of what I wrote?
G

dschwark

I appreciate your thoughts, G. As my equipment wears out, I'll try to take your thoughts into consideration. I have what I have at this time though. While not state of the art, I will tell you the system works well, has been reliable and sounds really good in a small to medium venue, and wedding environments. I try hard to find fault in the sound quality and output, but to this point I find this system just plain kicks.

I look forward to getting the drpa+ online, and have high hopes that it will improve the sound of the system even more.

Best Regards,
Dan