Question about Peavey PR15 400w PA Speakers

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No low end from speaker. Sparks came out of backplate when switching the plug from jacks. Now the horns are only thing that works

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If you failed to turn off the amp before changing speaker cables you have fried something. Since the plug shorts when unplugging, if the amplifier were on, the amp would sense the short and will often fry the amplifier or the speaker. You don't mention what the amplifier was. If the speaker were daisy chained to other equipment a ground loop probably formed and blew out the woofer. The horn often has Peavey's "SoundGard" circuit so it probably survived. NEVER change speaker cables while amp is on. ALWAYS secure the 1/4 inch type cables through the handle of cabinets so they can'tbe inadvertenly pulled out and burn up equipment. Your amplifier driving one of these should be rated at no more than 200 watts RMS. These "400 watt Prrogram" ratings are for the birds... fake advertising. Put 400 watts into this RMS and it blows out.

Posted on Aug 02, 2011

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1 Answer

Hi,I have 2 sp2 cabs,getting sound thru the horn but none to the speaker,any ideas ? thanks


2 possibilities here:

*Speaker coils got fried or,
*Input jack named "Low" in the Bi-Amp section has a loose contact, as they are switch also.

Hope this helps.

Sep 24, 2012 | Peavey SP2 PA Passive Speaker

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Peavey sp2xt speakers horn makes no sound when plugged into normal input. Horn works fine when plugged into the high side of the crossover.


High side speaker input jack defective, as they are switch also and if you plug the wire from the amp in full range and no hf sound but connecting directly to the bi-amp hi does, then your female 1/4 plug at crossover is defective for sure.

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Tascam GA-30CD will output sound through the headphones, but I cannot get it to output through the speakers, after the headphones are removed. How do I get sound through the speakers? Thank...


A common problem is that the switch contacts on the headphone jack that send the audio to the speaker when headphones are unplugged go bad. Some of these are so low quality that after a few times of inserting a plug the contacts no longer make. If you can access the jack, you might find a jack similar to: http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=RA49B12B-ND
What happens is the spring tension on the tabs over the top of this that contact the leads to the speaker lose tension and no longer press hard enough on the contacts to make contact. Try to open your unit and see if it has this kind of jack... Frankly, these jacks are JUNK and a chronic problem.

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This is on a 15 watt Peavey Vypyr. I have a buzzing at the bottom end of my amp, when playing on the low E string. I plugged in my headphones and the buzzing went away while playing. I have also raised my...


The voice coil on the cube speakers must be scraping against the magnet.Or the speaker cone must be damaged causing it to flutter at low frequency where there will be large cone movement. Try removing the phono jack from your musical instrument/ guitar and touch the tip of the jack with your finger. You will hear a hum, now turn down the volume and listen to the speakers very closely and see if you can identify the flutter. All the same you will have to fix the speaker or replace it. Have you ever dropped the speakers, if so the speaker frame could have warped causing the scraping noise.

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JRX125...there was a rattle/noise that indicated blown driver on midrange horn...replaced drivers, noise still occurs. discovered loose 1/4 in jack to tip of plug...tightened fit, but didn't trust...


The noise MIGHT be a resonance in the cabinet. The way to find out is to sweep a frequency upward to see if something rattles at certain frequencies... Don't be surprised to find several. Within the cabinet are the usual culprits: Wires rattling against the cabinet, loose debris, grilles and the logos on them, circuit boards with crossover hardware, cabinet wood that is not glued and rattles against itself. Things like bass port tubes can rattle.
Find an audio generator and sweep the cabinet from 50Hz to 10KHz and you will be surprised. Some speakers may have resonances as well. Expect things in your room to start rattling as well.
This is really the only way to find the problem. PLEASE wear hearing protectors at levels above 90Db.

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Titanium high frequency drivers not working. Is there a fuse in crossover?


i) I believe you can access the fuse by removing the Input Jack Panel.

ii) If fuse is OK, then unscrew the horn unit, take off one speaker wire & measure resistance. If it is open circuit then you can order a replacement horn diaphragm (if you feel confident to fit it to the horn).

Feb 22, 2011 | Peavey PR15 400w PA Speakers

1 Answer

My deville has just stopped producing any sound what soever. All the tubes glow and the red power light is on but no sound. I have tapped the sides of all the tubes and they all register a sound except the...


The first thing i would do is not leave it on in this way for too long. You could blow out a very expensive Transformer if its a faulty speaker. The worst thing you could do to a TUBE amp is run it without a speaker . I would test the speaker first. Just remove the wires going to it. And connect the speaker to either a car stereo or house system at low volume very low. And see what you get. if it works ? Good! Now check your guitar chord/wire. Try different ones try different guitars. If that doesn't work . Look into the input jack on the instrument input hack on the amp.. They do come loose off the board.Either get a new input jack or resolder the old one. if you only have one guitar look at the guitar output jack. Loose wiring on the guitar could cause this also. Dirty In and out put jacks could cause this. A pencil with Very fine sand paper wrapped around it will clean a dirty input/output jack. Try these things. Just remember poking around your amp is Dangerous. The electrical components hold a charge even unplugged that can kill you. No joke..

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1 Answer

No sound in horn when plugged in bi amp connection


The question is whether or not you get any sound from the horn when in full-range. If so, then either the input jack for the horn is defective, or you are not passing the signal. A quick check would be to send the full-range signal (at low volume) to the high-freq input. You should hear the horn work. If not then the connector is defective on the crossover board.

If you get no sound from the horn in any configuration, then the coil is blown for the horn. This can be replaced. It is usually a 22a or 22ti diaphram

Let us know what you find.

Dan

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1 Answer

There is no sound being sent to the speakers and


Check if sound to headphone jack is normal. If so, try the headphones in the MAIN out 1/4 inch jacks. If there is sound (it will be a lot less as this is a line level output), then the power amps are probably popped... and maybe the main power supply. The auxilary runs all the visible stuff.

If under warranty, take it for repair. Behringer doesn't provide schematics so working on these is a problem. In the PMP5000 there is a chronic problem of insulation breakdown on the rear most amp that can wipe out the power supply as well as the switching transistors in the amplifier. (This is a class D switching/ energy recovery type amp).

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1 Answer

My amp is not outputting to the built in speaker. I can get output to headphones and have proved it with both guitar and ipod but neither work to the speaker.


Possible problem with teh switch on the headphone jack wooould be my guess. When you plug in the headphones it opens a switch to disconnect the speaker. Unfortunately, these jacks are weak and often the switch fails to close when the hedphones are unplugged.

You need to open the amp and check if you can close the contact by pressing on it. There are several designs of these jacks and MOST are weak and having a cord plugged in and tripping over it is SURE to break the jack.

Here is a site showing jacks for a Fender, but most are similar.
Look at the one with several strips of metaal between the little black walls... they are NOTORIOUS for the switches not working. OFTEN you can bend the springs tigter to restore them. The site with pix in a box at the top:

http://www.catalinaguitars.com/catalog2/index.php?cPath=66_86

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