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Adding Speakers to system.

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Travis Benavides:
Hey guys thanks for all of the suggestions.

Yes, Ivan I have tried simply turn down the lows through the board and just turning down the amp. Which is what I had been doing for the time being.

Brad, I did as you suggested and checked out the who system top to bottom and found the problem. As it turned out the Crossover had never been properly adjusted to the acoustics of the room. It had just been installed and set to one of the manufacturers presets. After adjusting it to the room it sounds so much better now! 

Chris, I did some research and yes the PX was made for powered speaker. Upon further research I found out that using it for amps wont damage the system, but I was only able to find one source that addressed that kind of problem. If I find anything else about it I'll make sure to post the info.

Thanks again everyone for all the help!

David Sturzenbecher:

--- Quote from: Travis Benavides on April 23, 2011, 12:07:10 AM ---It had just been installed and set to one of the manufacturers presets.

--- End quote ---

If you don't trust the manufacturers presets, why would you trust the manufacturer?

Brad Weber:

--- Quote from: David Sturzenbecher on April 23, 2011, 12:38:45 PM ---
--- Quote from: Travis Benavides on April 23, 2011, 12:07:10 AM ---It had just been installed and set to one of the manufacturers presets.

--- End quote ---

If you don't trust the manufacturers presets, why would you trust the manufacturer?

--- End quote ---
Because the DSP manufacturers may be able to create presets for certain components, but not for every possible combination.  And speaker manufacturers may be able to create recommended settings for their speakers, but not necessarly for every processor.  And neither can create presets that account for the specific conditions of each individual application.
 
This particular situation also seems to have a significant additional factor as it is apparently a DriveRack PX being used with amps and non-powered speakers. Since the DriveRack PX was intended to be used with powered speakers, I believe the presets available and the models in the Wizard are all related to powered boxes and those may have little relevance to a system with Behringer and QSC amps and Peavey speakers.  They may have simply selected the generic "stereo mains with stereo subs" preset that includes no model specific settings.

Ivan Beaver:

--- Quote from: Travis Benavides on April 23, 2011, 12:07:10 AM ---Brad, I did as you suggested and checked out the who system top to bottom and found the problem. As it turned out the Crossover had never been properly adjusted to the acoustics of the room. It had just been installed and set to one of the manufacturers presets. After adjusting it to the room it sounds so much better now! 

Chris, I did some research and yes the PX was made for powered speaker. Upon further research I found out that using it for amps wont damage the system, but I was only able to find one source that addressed that kind of problem. If I find anything else about it I'll make sure to post the info.

Thanks again everyone for all the help!

--- End quote ---

Just curious how you "adjust a crossover for the acoustics of the room".  What exactly did you change that compensated for the acoustics?

Crossovers are used to adjust pass bands between different drivers/cabinets to operate within the intended range and to blend them together as seamlessly as possible.

The acoustics of the room are a different issue.  The acoustics will not change the signal delay needed-nor the level needed or the freq used or the slope or type of crossover filter.

Just wondering what "preset" was used that included the various components in the system-since they were from different manufacturers.  That must be quite the preset to dial up that includes that amount of variables.

Richard Turner:

--- Quote from: Travis Benavides on April 12, 2011, 10:54:49 PM ---I just happened to get a job in a small college town at a Bar as a live sound engineer. The Bar is a decent size (299 occupancy limit). The sound system is pretty bar bones, but I have seen worse. The system comprises of a Behringer Eurodesk sk2442fx, Behringer Multicom pro-lx, a dbx Driverack PX, Behringer ep2500 and QSC plx 3602 power amps, with 2 older model Peavy SP 218 subs and 2 Peavy HDH 224T's for mids and highs. To me this system seems a little bottom heavy I was wondering if I should add more speakers to the system to even it up or pull out a sub or does nothing needs to be done at all. I feel like I have a good ear for this but am still pretty new to the whole setting up and buying equipment. If you need anymore info let me know. Thanks!

--- End quote ---

I had a pair of HDH244t a long time ago, The passive crossovers really suck alot of power, If I remember correctly there's 4 20 watt ceramic resistors in there. Unfortunately the Drive rack PX is a 2 in 4 out signal processor. if you could tri amp the rig you might be more pleased with the output, If you could pick up another larger amp for the bottom end , use the driverack px for subwoofer crossover and limiter then add another crossover to biamp the tops it might make a bit more from what you have,

Also the 44t 2" exit driver in those boxes starts dropping off at 12k, I think the cut sheer had the speaker rated at 400w  55-17k but dont quote me on that

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