Question about Behringer B215D Powered Speaker (550 Watts 1x15 in)
Volume drops distorts and cuts off at high power.
Posted by Anonymous on
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Posted on Jan 02, 2017
Since all your speakers are passive, indeed there is a problem like what you describe. This is because with the same amount of signal from the board's speakers outputs, the 2520 can't play the same amount of audio with the PASW18. I don't know what other equipment is available (if any) so let me give you some suggestions.
1. Connect in parallel the 2520s at one of the board's output and do the same with the PASW18 at the other channel output. Doing this you will be able to handle one channel (e.g. left) for the main speakers level and the other channel (right) for the sub speakers level. No stereo playback, so set all the inputs to mono.
2. Use another separate amplifier to drive the subs. You have to provide signal to the amp from any LINE LEVEL OUTPUT from the board (using mono is a very good idea since low frequencies have no stereo separation and in this case you could use a single channel amplifier for both subs, parallel connection)
If there is available more equipment post me back in details to give you guide lines.
In case of a problem or clarification or further details needed (connection diagram e.t.c.), don't hesitate to post me a reply before rejecting my answer.
If you are satisfied, accept my solution.
Thanks and regards
direct fixya link: http://www.fixya.com/users/technical114
Posted on Mar 08, 2011
SOURCE: I have a B215D Behringer
This should be close to your schematic;
Scroll down to "Get Msnusl" link and download. Leaving it on should NOT have caused a failure, however, if it was running and the input was not being driven there may have been feedback going on that did damage. Only thing to do is take it for repair.
Posted on Mar 20, 2011
If more than one input is bad, then problem has NOTHING to do with the preamps. Check list:
1. Make sure you are using BALANCED lines everywhere... either XLR or TRS cables.
2. Make sure ALL interconnected equipment, mixers, amps, powered speakers, CD players, etc. are ALL powered from the SAME receptacle or power distribution unit.
3. Do proper setup. Select each channel PFL and set the trims so the indicator never goes into clipping, but is in the 70% range during max volume input to mics, etc..
4. During operation the sliders should be at least 50% up on used channels and the mains. Setting of levels throughout the system is important for noise free operation. Using EXCESS gain at some point results in distortion and noise. Using sliders near the bottom position results in poor signal to noise ratio.
Now re-read #2 above... and believe it. I have seen a lot of equipment blown due to ground bounce of building power. That is why the pro's run power back to their mixer from the area where the amps are powered.
Posted on Apr 30, 2011
Lots of luck. Behringer no longer sells direct. Fullcompass.com is their parts distributor. If they don't have it in stock, it takes months... I have had an order in for 6 months now. The procedure is you call Behringer at 1-425-672-0816 to get a part number and an incident type number. Then call Fullcompass and order the part at 1-800-356-5844 and tell them you need Behringer part. IF they have it in stock, then you are lucky.
Posted on May 18, 2011
SOURCE: I have a Behringer PMP
There are NO "yellow" overload LED's period. The clip or overload RED LED's are just above the PFL buttons for selecting a solo channel. There are "yellow" signal received lights (level set) up near the trim controls. In normal operation these will light when signal is received. Here is schematic for the PMP5000 which is really identical for the 6000.
http://elektrotanya.com/behringer_europower-p0569_hca2400_sps1000_dpx_pmp-1280s_5000_sch.pdf/download.html This has part of the DSP and PS and the PA circuits.
Scroll down to "get manual" and click on it to download. Ignore other download links on the page.
Try turning off the Phantom power if it might be on... If that stops the hum, something is the matter with the bypasses feeding Phantom power to those channels... Possible problem might be shorting of one of the coupling caps at the preamp input. The PMH5000 drawings are more accurate at the input circuits. You will note that the level set LED's are the yellows, and the clip/PFL LED's are the red ones. I suspect that RF bypass caps such as C110 or C121 (example typical for channel one) might be shorted. This makes noise on the Phantom power line unbalanced and will get into the channel where one of these caps is shorted. Do a test: Plug a shorting jack that shorts the tip to the sleeve intot he inssert for the channel. With the LOW CUT button up, observe is the level set LED for that channel dims or goes out. If it does, then I supect you have a shorted RF bypass cap at the input..The next test involves driving a KNOWN balanced signal into the XLR jack and using a TRS in tthe inout 1/4 inch, test the levels with an oscilloscope to verify the hot and the return have equal amplitudes. I they don't, congratualtions you have to tear the main board out... lots of knobs and screws to access the inout circuits and verifuy the cause... it could ALSO be a bad transistor in the inout pair, etc...
Posted on Sep 25, 2011
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