QSC pld 4.2 and BOSE.

[John Smith]

So I acquired this equipment VERY cheap. I have two Bose Roommatch RMU105 speakers and one Bose MB4 bass module connected to a qsc pld 4.2. I want to use these as a sound system in my theatre. My question is has anybody ever used the DSP on the QSC? I have a very limited knowledge when it comes to EQ. I used one of the factory presets on the PLD amp. With these parameters: Channels A and B are bridged, with a 48 dB/octave Butter-worth low-pass filter at 80 Hz. The signal is summed frominputs 1 and 2. Channels C and D are separate, suitable for stereo mains, with48 dB/octave Butterworth high-pass filters at 80 Hz, whichperfectly complements the subwoofer filtering in A and B.Channel C’s signal is from input 1 and D’s is from input 2. Im connecting the sub to A and B since its bridged and putting the RMUs on ch C and D respectavily.

How would the DSP need to be set for optimal sound? I tried setting it but it seems confusing. Not so much the navigating but setting each band.

Sorry for the amatuer question. Also is there a good resouce you could recommend that I could read or research?

 

[Paul OBrien]

Re: QSC pld 4.2 and BOSE.

How did you come up with your crossover settings? It's odd that you have such a highend amplifier packaged with such mediocre speakers.. sorry not a Bose fan. But given the powerful DSP available in this amp you just might be able to produce a half decent sounding home theater system with it. You won't however be able to use much of the amp power available, I'd suggest you not bridge a pair of channels into that bass bin, at 400w a single channel is already double it's rated capacity. The Bose RMU105 needs a crossover at 100hz to 150hz minimum based on what I see on the spec sheet and I'd suggest using 24db slopes instead. As for navigating the DSP in the amp have you visited the QSC website? There you will find some educational information on the various features and functions of these amps as well as control software that will run on your personal computer and give you access to the internal DSP functions in a format that may be a little easier to navigate.