Members TWSSBAND Posted October 24, 2009 Members Share Posted October 24, 2009 ok lets say EV ZX1-90 speakers. Rated at 8 ohms and min impedance is 6 ohms. What would happen if they are hooked up in parallel driven by one side of a plx1104. Am I to assume a)not good for the amp b)wattage to each speaker would be less then compared to 2 Community MVP12m. 8ohms and min impedance is 3.8. Just in case here are the spec sheets. http://www.electrovoice.com/documents/ev/38110469.pdfhttp://www.community.chester.pa.us/files/literature/spec%20sheets/MVP12M_SPEC.pdf I am just trying to get a better understanding Link to comment Share on other sites More sharing options...
Members flanc Posted October 24, 2009 Members Share Posted October 24, 2009 The QSC PLX 1104 says it does 500watts into 4ohms.http://www.qscaudio.com/products/amps/plx2/plx1104_specifications.htm So, each ZX1 would get 250watts and that would be just fine for the amp. It would be the same wattage (roughly) to the Community speakers and the volume difference would be determined by which speaker is more efficient. The ZX1's are nice sounding speakers but not terribly efficient. Note: after looking at the community specs, they are not very efficient either. Both speakers claim (94db 1w/1m) Link to comment Share on other sites More sharing options...
Members TWSSBAND Posted October 24, 2009 Author Members Share Posted October 24, 2009 So, each ZX1 would get 250watts and that would be just fine for the amp. It would be the same wattage (roughly) to the Community speakers and the volume difference would be determined by which speaker is more efficient. QUOTE] Thats what I thought. I was really looking to see if it would damage amp or speakers at all. I am not into running parallel at all. Kinda of one of the questions if I had to do it. I know neither of them are not the most effecient monitors. I have a couple "tight space" places I need them for. Link to comment Share on other sites More sharing options...
Members agedhorse Posted October 25, 2009 Members Share Posted October 25, 2009 a 3.8 ohm minimum impedance would qualify as a 4 ohm nominal speaker in my book. Treat it as such until the real info and plots are analyzed. Something is seriously wrong if this is really the case (from an amp designer's point of view) Looking at the spces, something is really goofy with an impedance dip that serious at 10kHz, beware that some class D amps look for things like this and shut down. I would worry about capacitive loading from an odd Zobel network in the crossover as a first hunch. Link to comment Share on other sites More sharing options...
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