I have a Crate PA-8 4 ohm 150 watt PA head that I run to four Peavy 10" PA speakers (two per side in series). It was very good, clean sound, but the speakers were cheap and may have been pushed too hard - I get fuzzy sound from a few of them (hence my belief it's the speakers, not the amp). I want to run somewhat heftier speakers but can I also use the effects loop out (the only out besides L&R speakers, of course there's an effects in) into a another powered head to run monitors? The signal would be low - pre-amp at most - so it has to go to an amp to get pushed. Will I blow another powered mixed if I run it in? We play amped acoustics/bass up to electrics with drums/keyboards.

Question 1

I have a Crate V16 -15 watt Amp w/12"-16 ohm speaker. Can I use a 8ohm speaker instead ?? Thanks

According to the manual, it needs a 16 ohm minimum load, so no, you best not use an 8 ohm speaker.

Nov 13, 2014 | Music

What is the actual watts per channel @ 8-ohms and 4-ohms on the Behringer PMP3000?

Those specs would be right - I have this same board but the amp was fried by a previous owner. I pulled the amp board out and tossed it and use the mixer now to drive an external amp. Great board. This amp is rated at 1200W "peak", bridged into an 8ohm load. That would equate to about 900W RMS bridged into 8ohm or 450 per side into 4ohm loads per side. You can't daisy chain all 4 speakers....impedance would be too low. You can run two of your 8ohm speakers per side - that results in a 4ohm load per side for the amp. That would give you amp delivery of 450W per side. Your speakers are rated to handle more than that so you're fine. For the record.....you could run one speaker per side no problem....just lower power output.

Aug 16, 2012 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

The SP5G Peavey Speakers are a good combination for the MP5 Plus?

Those speakers are capable of much more power than that little powered mixer can deliver - my 5G's are rated for 800 Watts program. I use a pv2600 to drive mine - at 8 ohms per side that's a good match. Depending on what your using the setup for...my concern would be that a small amp like that could get turned up high enough that you'll be clipping - thereby sending nasty squared waves at the speakers - they won't like that much. If you want much volume - you should look at a bigger amp. If you're going very low key...those speakers are overkill.

Jun 08, 2012 | Music

1 Answer

Could you send me the best set up starting with 1 for setting up our new XR 8600 Powered mixer in our church. We have 3 bose loudspeakers on each speaker output. Should those Bose be set for 100 watts...

Sorry, but you have a problem. The amp is rated to 4 ohms per side. Your speakers would have to be 16 ohm type to allow 3 per side in parallel. The Bose ratings are usually consumer type ratings and they would have to be set to 200 watts each (twice the rating that the amp can produce per side) to be safe connected to that amp. Your speakers are likely 8 ohm so you could parallel ONLY two per side OR if they are 4 ohm, then you would have to series them. You could series two or three per side safely for the amp. You don't tell us what model Bose speakers you have. Anyway, one has to first meet the specs of the amp and the speakers to avoid damage. It is likely the amp is too BIG for the speakers. For the setup of the mixer portion of this problem I want you to view videos on YouTube. Search for "mixer setup". Don't worry that they are different mixers than yours... there is enough commonality and the functions are nearly the same for MOST analog mixers. Recommendation: forget about two of the speakers... keep them as spares and run low volume to avoid blowing the speakers. I can't imagine any competent audio equipment supplier configuring your system this way.

Apr 24, 2011 | Peavey Xr 8600 8 Channel Powered Mixer

1 Answer

Behringer pmp4000; not getting much volume from system 2 speakers going through main 1 out both L R A/B switch is to the top main L R tried guitar computer in channels 9/10 via rca still minimal...

You would get about 200 Watts RMS per side using 8 ohm speakers. "Not much volume" is very relative. With the two 12 inch speakers you should be able to fill a 600 to 1000 sq ft room nocely.

Mar 05, 2011 | Behringer PMP4000/B212XL Mains & Monitors...

1 Answer

Been looking everywhere for this... i just hooked up my PMP6000 to my brand new JBL EON's 305 (non-active), stereo (one cable for A and B) using Speaking to 1/4" cable. My output level was also VERY...

The JBL EON 305's are 8 ohm speakers. The PMP5000 wi;; produce 400 Watts per side into a 4 ohm load (600 Watts peak). Into your 8 ohm speakers, the peak current will be halved while the voltage remains the same so you ACTUAL power per side is 200 Watts. It is hard to know how much you expect to get out of the amp. This power would fill a venue of at least 2000 sq ft. If you need more sound, try borrowing another 8 ohm speaker for each side and parallel them with the EON's as a test. That will double the power and add 3 Db more of sound. Your main slider should be around unity typically. This amp is a class D switching type (very efficient) and runs on +/- 70 volt rails. giving about 45 volts RMS output. At 4 ohms, this is just over 10 amps giving 450 Watts... at 8 ohms this is around 5 amps or 225 Watts.

Please read my tip on Fixya about the ground hazard of channel A when using 1/4 inch cables out of the PMP units... essentially the BARREL of the connector from channel "A" is the HOT,... NOT the tip of the PLUG. Ground the barrel IN ANY WAY AND YOU FRY CHANNEL "A" AMP !!!

Jan 16, 2011 | Behringer Europower Pmp5000 Powered Mixer...

2 Answers

I am currently having problems with our PA System. We use a Behringer PMP3000 Mixing Board, with a Peavey PV115 Speakers. We can't get them to reach the volume these speakers are ment for. We would run a...

The speakers are 8 ohm so you can probably get near the 400 Watt per side when connected to this mixer. You don't need bridge mode to get this and I would recommend not using it anyway. Whatever you do make sure the speakers don't get disconnected when running at high volumes as you will arc out the amp in the mixer... I know this as I fix them... I have two PMP5000's that I repaired. Lots of work to repair...

The feedback is NOT the fault of the mixer or speakers but instead of something picking up sound from the speakers and sending back to the mixer.

The mic must be well in back of the speakers (say at least 10 feet) to avoid this or you need to use anti-feedback hardware to avoid the problem or highly directional close talking mics. Reverberation off walls can also get back to mics and cause problem. I was able to use a wireless Peavey mic which seemed to disrupt the phase enough to never get into an oscillation even when in front of the speakers.

Apr 18, 2010 | Behringer Pmp3000 16 Channel Audio Mixer

1 Answer

XR 8600 what color wire on the output connects

Peavey XR 8600?? Well it's 600w per ch. at 4 ohms/per side. So, whichever mode you use (Main, or Main/Monitor) you are best to have a 4 ohm total load for each channel of amplification. Ex.--Mains only, one 4ohm speaker per channel will give you 600W per side. Or two 8ohm speakers per channel in parallel, which makes a 4 ohm total load.

Main/Monitor mode---treat it the same way. one 4ohm, or two 8 ohms parallel. per channel.

Your best situation is to have a 4 ohm total load for each channel of amplification to get your 600W.

Parallel-- 8ohms each / 2 speakers = 4 ohm

Feb 20, 2010 | Music

1 Answer

I have a crate PA 8 and it makes a crackling noise when I play through it. I hooked the speakers to my other amp and they sound good, I hooked the PA to my marshall cab and it still has the noise, so I...

Hi

The problem is with the amplifier itself. Crackling is usually capacitor related and you will need to have the amp checked over to properly identify the cause.

Some amps are also prone to pick up static from other electrical items which can also cause these problems. I had a crackling issue with an old Crate amp of mine which turned out it was due to being too near a computer/monitor so it is worth eliminating these things as a possible cause before having the amp checked.

Hope this helps. Thanks for using FixYa.

Oct 28, 2009 | Crate FlexWave FW15 Guitar Amp Combo, 15...

1 Answer

What ohams input do i use. i got a 4/12 cab with

If you put four 16 ohm speakers in parallel on your amp you should set it to 4 ohm. You calculate that as 16 ohm/4 = 4 ohms because they are in parallel.

When you put speakers in series then you add the impedance of each. You can ONLY series speakers if they are identical AND in identical cabinets.

Sep 26, 2009 | Marshall Mg50dfx 50-Watt Combo Guitar...

Question 2

0 Answers

How can I stop the overdrive from bleeding into the clean setting on my FlexWave 15?

Jun 09, 2014 | Crate FlexWave FW15 Guitar Amp Combo, 15...

0 Answers

Question 3

Fred Yearian

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Crate Master
5,603 Answers

150 watts should be easily handled by four Peavey speakers in the connection you described.. If the Peavey's are 8 ohms, then your total load was 8 ohms for the series/parallel arrangement which is well within the 2 ohm drive capability of the Crate according to specs.

I question if you really mean the speakers were in series? This requires a special cable to do this. Now if you mean they were "daisy chained" like the amp went to one speaker and another cable connected that speaker to another, then you REALLY had ALL speakers in parallel electrically which would be at the 2 ohm low limit of the amp... In either case, with only 1/4 of the 150 Watts to each, the speakers should NOT have been damaged. The amp MAY have been damaged. Try each speaker individually at a REASONABLE level to test.

If you plug into the effects loop out jack,OFTEN the connection to the internal power amp is broken so you might have to arrange a special cable as a wye to go back into the power amp as well as your external amp. In any case pwere ALL interconnected amps, etc from the same power source/receptacle for system safety.

Posted on Jul 16, 2010

cunghm Jul 16, 2010

Thanks. Yes, I daisy chained x 2 - left speaker out from the amp into the in jack of one speaker, then out from that speaker into the next one. Repeat for the right speaker.

I have never run anything out of the effect loops out - I was just wondering if it was doable/advisable.

Sadly, the head - in service for many long years - may indeed be on its last legs. I tried it with two Kustom 15" speakers (250 watt 8 ohms) and got the same mushy, crackly sound. Time to look for a powered mixer that can push house speakers like the Kustoms and has a monitor channel for the Peavys.

Thanks again - very helpful.
Fred Yearian Jul 16, 2010

I am sure your unit can be repaired as likely one side of the power amp stage has probably been partially blown or possibly the filter cap for one polarity power supply has failed (easy cheap fix). Parts cost would be nominal given the symptoms you described. FInd a good local electronics tech... even if you get another unit, keep existing as a working spare or use to drive monitors as a lot of the powered mixers have an output jack BUT do not have a power amp for that which to drive speakers.

With your speaker arrrangement you would probably want more power than 150 Watts total as you are probably driving the amp too hard.

I have some Kustom monitor 15 inch units... I am NOT inpressed with the crossover arrangement in them... it is simplistic and really boosts the highs sent to the tweeter while leaving the highs to also go to the woofer.

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Fred Yearian

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I have a Crate V16 -15 watt Amp w/12"-16 ohm speaker. Can I use a 8ohm speaker instead ?? Thanks

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The SP5G Peavey Speakers are a good combination for the MP5 Plus?

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