Hello Music Wizards

OK, so I am doing my homework on if I want to upgrade my speakers.

I now use two powered JBL Eon 10G2's with my Tyros. Sounds quite good. So far it has been plenty of power for my needs. But I've been thinking of having more in reserve for bigger rooms. Plus you all know we need to get new toys once in a while.

So with that in mind. My JBL's are 175 watts.

I have been thinking about the Peavey PR12's which are 8 ohms.

I have been checking out the Behringer PMX2000. This is 250 watts at 4 ohms and 180 watts at 8 ohms.

I have also been looking at the Behringer PMH880S. This is 2 x 400 watts at 4 ohms and 2 x 200 watts at 8 ohms.

So in checking the numbers:

JBLs 175 watts
PMX2000 180 watts
PMH880S 200 watts

If what I am looking at and deducing from these figures is correct, then really there may be no real reason to even make a switch with this combination. It appears to be a very small difference in power. I know the EV sx100+ are 200 watts also.

I know a little knowledge can be dangerous. This is not my area of expertice.

I also know that a bunch of numbers on a piece of paper is not as important as the sound itself.

Any comments to help clear up this topic up in my mind?

thanx
Scott

Scott,
You need to increase the wattage by TEN times to get twice the volume. That's right - TEN times.

My advice is to get a subwoofer - that will make the output of your eons more efficient and the dance floor will FEEL the punch that the 10s are missing.

Unlike men, all watts are not created equal. This is a widely researched subject, but different companies arrive at their wattage ratings in varying ways. Also important to consider is the efficiency of the speaker.
Use your ears and trust them.
DonM

Listen to Uncle Dave get the sub!!

Also take in consideration:
- the impedance load (ohms) effect the amp.
- the load depends on the wiring configuration of the speakers
- the amp has to be able to handle this load
- the lower the impedance, the higher the amperage, the higher the load
- too low of an impedance will damage your amp.

SOUNDS like detective work for Sherlock OHMs and Dr. WATTson.

I'm sorry. I am on my way to work right now and my mind gets this way whenever I try and gear up for that event. I apologize.

Good Day everyone.

Ed - That's a dreadful pun but very clever.

KFingers

Scott,


Typically consumer speakers are rated at 8 Ohm, most portable professional speakers at 4 Ohm, and stationary pro speakers (like in the concert halls) at 2 Ohm.

This is how 8 Ohm/4 Ohm rating is applicable, in the case of PMX2000:

If you plug in one set of speakers, rated 8 ohm, you get 180 watt sound output. If you plug in a second set of speakers (in parallel with the first one - some amps provide dual outputs), this halves the impedance to 4 ohm, but you do not get twice the power output, but only 250 Watt.

It follows that you have to match the impedance of speakers to the amp - for maximum output you should get 4 ohm speakers, or use 2 sets of 8 Ohm speakers. I would not recommend getting speakers with lower impedance than the amp is rated for (possible to damage the amp).

BTW, despite some posts to the contrary, I still believe that PMX2000 is a MONO mixer, as you can not pan the individual inputs to the right and left. If you think it sufficient for your needs - fine, but I would spend another $70 and buy a true stereo device.

Regards

I believe to get 250 watts out of the Berringer, you would need to either use a mono mode (if there is a stereo/mono capacity) and 2 8 ohm speakers, for a 4 ohm load, or use 4 8 ohm cabinets (two per side) in stereo mode.

Russ

It alsohas something to do with "decibels."
I don't know exactly how it works, but I remember that it takes twice the wattage to raise 100 decibels to 110 decibels, or something like that. Anyway, it's not just wattage, but decibels and distortion.

Get the sub-woofer.