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PA question
http://maplifiers.net/forum/viewtopic.php?f=7&t=2586		 Page 1 of 1
Author:  Unstrung [ Wed Aug 22, 2012 12:00 pm ]
Post subject:  PA question
No idea how to match speakers to a powered mixer. We have a Behringer PMP2000, here are the specs:

Quote:
Preamp Outputs left/mono & right:
- Type: 1/4 inch TRS connector, unbalanced
- Impedance: approx 1.5k ohms
- Max Output Level: +21 dBu

Monitor Output:
- Type: 1/4 inch TRS connectors, unbalanced
- Impedance: 1.5k ohms
- Max Output Level: +21 dBu

Power Amp Inputs:
- Type: 1/4 inch TRS connectors, unbalanced
- Impedance: approx 47k ohms
- Max Input Level: +21 dBu

Loudspeaker Outputs
- Type: Professional speaker connectors (compatible to Neutrik Speakon)

Load Impedance:
- Left/monitor: 4/8/16 ohms
- Right/mono main: 4/8/16 ohms
- Bridge: 8-16 ohms

DSP:
- Converter: 24-bit Texas Instruments, 24-bit Sigma-Delta, 64/128-times oversampling
- Sampling Rate: 40 kHz

Amplifier (Power Amp Output):
- Power @ 4 ohms: 350 w
- Power @ 8 ohms: 165 w
- Power @ 8 ohms (Bridge): 800 w

Power Supply:
- Mains Voltage: 120 V~, 60 Hz
- Power Consumption: max 1 kW
- Fuse: T 10 A H 250V
- Mains Connector: Standard IEC receptacle

Physical/Weight:
- Dimensions: approx. 11 x 18 1/8 x 10 5/8 inches
- Weight: 30.9 lbs

Output at 8 ohms stereo: 165 watts per channel Dimensions and Weight in PackagingShipping Weight: 35 lbs Shipping Dimensions: 20 x 14 x 13 in


So probably looking to get speakers from Behringer or Yorkville as those are the affordable brands around hmyaw... but unsure what ohmage and wattage a pair of should be! Preferably not Behringer as my old band destroyed a pair of their powered speakers and preferably 15" speakers
Author:  torgeot [ Wed Aug 22, 2012 12:19 pm ]
Post subject:  Re: PA question
Get 8 Ohm speaks. You will be running 2 of them so you will be running it at 4 ohms.
Author:  Snaxocaster [ Wed Aug 22, 2012 12:55 pm ]
Post subject:  Re: PA question
...and speakers rated for less than 350W RMS, and run the amp at fairly conservative levels. You can toast a speaker just as dead underpowering it, tweeters especially. PA gear is a different animal than tube guitar gear.

http://www.3daudioinc.com/3db/archive/index.php/t-4265.html the posts by Kev in this thread offer a good technical explanation.
Author:  Unstrung [ Wed Aug 22, 2012 3:51 pm ]
Post subject:  Re: PA question
http://www.lamusic.ca/Yorkville-Sound-YX15-p/yx15.htm Pair of these guys then?
Author:  Snaxocaster [ Wed Aug 22, 2012 8:44 pm ]
Post subject:  Re: PA question
At first glance, I'd say those'll do the trick. I'd track down some reviews, if you can, just to make sure there's no recurring issues (like shitty tweeters; the Celestion neodymium tweeter thing is reassuring, though) that you should be wary of. Plus they're from this vague general area; a friend of mine used to work there. I'd expect yer getting sturdier kit than the Behringer stuff.
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