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Post by Darren on Jul 27, 2006 6:35:58 GMT -7
Just got my EP2500 last night and am experiencing some issues. Not sure if they are a problem or not yet but wanted to get some advice.
1. When powering on my amp without any speaker wire connected the channel 1 clip LED lights up bright for a couple seconds then goes away each time.
2. When shutting the amp off the green power light remains lit for quite a while. My PE1500 never did that but I have other amps that do that, residual bleed off I assume.
3. When shutting the amp off with my subwoofer hooked up, in addition to the green power light remaining lit the channel 1 clip indicator lights up and stays lit along with the green light for quite a while.
Other than that the amp appears to operate normally. I haven't checked stereo operation yet though. I don't like the red clip light coming on after I power the amp off becuse it gives the subwoofer a very small but audible pop when it does so.
The amp is set up with no clip or low cut filter and I have the 7 and 8 dip switches set for bridged mono. Running the exact same 4 ohm load as with the EP1500.
Ideas? Should I send it back?
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Post by ThomasW on Jul 27, 2006 7:39:05 GMT -7
If the other amp didn't manifest any of these things then there's something a little flakey with the new one. Whether you send it back depends on whether or not they bother you, since they don't appear to interfere with the nornal operation of the unit.
Might run it for a week and see if things stay the same or get worse then make the decision.
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Post by Darren on Jul 27, 2006 7:49:29 GMT -7
Yeah, I was going to fiddle with it for a week and see if anything changes. I was just kinda afraid to leave it on since the clip lights were getting freaky.
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Post by Darren on Jul 27, 2006 8:31:11 GMT -7
Just got off the phone with Parts Express. I have 7 days to return it free shipping and they'll cross ship a replacement out to me. I'll be out a subwoofer for 6 days  but I'd rather just get a replacement than have to deal with a repair from Behringer after that. Bummer, I was hoping to have a movie night this weekend. |
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carl
Junior Member
Posts: 95
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Post by carl on Jul 27, 2006 8:36:00 GMT -7
Item no. 2 is normal. At least as far as mine is concerned. I can't recall about the clip lights though. My amp is in the kitchen and I'm in the middle of a remodel. If you still have concerns in a couple weeks (when I hook the amp back up) I'd be happy to see what mine does and report back. Carl
I just re-read your post. I have mine hooked up in stereo, so I'm not sure anything I check further would apply to an amp hooked up in the mono mode.
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Post by Darren on Jul 27, 2006 11:03:43 GMT -7
CORRECTION:
I'm running 4 of those drivers 8ohms bridged mono.
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Post by chrisbee on Jul 27, 2006 13:03:46 GMT -7
I noticed the same odd lights when I connected my amp in bridged mode. Returning to dual mono set it back to normal. I presume setting the microswitches 6 & 7 to bridged on the back provides the signal for these lights to show.
You might want to consider changing to parallel pairs per channel for 4 Ohms rather than running the amp in bridged mode. (I'm assuming 8 Ohms per driver)
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Post by Darren on Jul 27, 2006 13:09:33 GMT -7
So, you had the same clip indicator thingy happening when powering off?
I can easily switch to dual mono (amp operating stereo) at 4 ohms each channel.
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Post by chrisbee on Jul 27, 2006 13:17:16 GMT -7
If my memory is correct it was the left clipping light that stayed on when in bridged mode. It worried me too at the time.
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Post by Darren on Jul 27, 2006 13:20:12 GMT -7
Yup, that's the one. Strange that it does that, there is an ever so slight thump the subwoofer produces when that light pops on too. I suppose if yours does it and you haven't had any issues then it might not be a problem  I need to decide if I should return it for replacement. |
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Post by chrisbee on Jul 27, 2006 13:37:15 GMT -7
Have a look in the manual. It may confirm the lights are normal.
We noticed an increased thump in bridged mode too. My wife commented on it. It even thumped when we turned the TV and DVDP on and off.
In dual mono no thump is noticed even with the controls at max.
The BFD and crossover still produce a loud thump so they go on first and off last.
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Post by Darren on Jul 27, 2006 13:39:22 GMT -7
Interesting, the thump I was referring to is when I turn the amp off there is a pause then the left clip indicator pops on and the thump is heard. The light then fades off over time.
Same for you?
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Post by chrisbee on Jul 27, 2006 13:57:19 GMT -7
Sorry. Can't remember the details now.
I was only in bridged over the weekend and the amp is out in the IB enclosure out of sight.
The green light fades slowly on turn-off as the capacitors slowly discharge. This is common to bridged and dual mono.
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carl
Junior Member
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Post by carl on Jul 27, 2006 15:01:02 GMT -7
Correction, I guess the proper terminology for my wiring is dual mono. I run 1 cable (rca) to the amp and the amp splits it into r and l. I have no bump on powering up or down however the amp is turned on after the BFD and off before the BFD. Carl
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ken
Full Member
Posts: 187
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Post by ken on Jul 27, 2006 16:42:41 GMT -7
Hi ........l too have a ep2500 running bridged into an 8ohm load.......and yes the clip light flicks on for a second when powering up and when the amp is turned off it comes on and slowly fades with the power light.....and yes mine does the pop thing too...........l've been running mine for 2-3 months and no problems......sounds like it's a normal occurance to me .lol...l hope so anyway!...has'nt missed a beat , maybe email behringer to enquire...... Cheers Ken  |
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Post by Darren on Jul 27, 2006 17:53:37 GMT -7
Sweet, I won't worry about it then. Time to start tuning!
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ken
Full Member
Posts: 187
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Post by ken on Jul 28, 2006 0:26:22 GMT -7
Oh, and remember to turn the right hand gain down as well...l put some black insulation tape over it to keep the kids from moving it...cheers ken  |
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Post by chrisbee on Jul 28, 2006 0:37:16 GMT -7
Oh, and remember to turn the right hand gain down as well...l put some black insulation tape over it to keep the kids from moving it...cheers ken Can you explain what you mean by this, please? What is special about the right hand gain? |
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Post by hdjunkie on Jul 28, 2006 6:04:37 GMT -7
Oh, and remember to turn the right hand gain down as well...l put some black insulation tape over it to keep the kids from moving it...cheers ken Can you explain what you mean by this, please? What is special about the right hand gain? Generally when in bridged mode, one gain is set to zero/off and the other gain controls the output when in bridged mode. Read the Manual it should say to turn one of the gain knobs all the way down and use the other to set your level. |
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Post by Darren on Jul 28, 2006 6:58:41 GMT -7
yeah, the manual says to turn the channel 2 gain all the way down to eliminate any cancellation of the signal.
I'm back in 4ohm dual mono and things are pretty good. I'm going to do more filter adjusting tonight. I'll have to live with my null I guess and take my boost down to reasonable levels. I'm considering trying out +5 instead of the +12 that was there for now.
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