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Author Topic: eaw fr153e crossovers  (Read 9685 times)

skip grumblis

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eaw fr153e crossovers
« on: February 25, 2014, 05:47:40 PM »

i keep smoking capacitors in the internal crossovers of these enclosures. any suggestions?
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Mike Ottinger

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Re: eaw fr153e crossovers
« Reply #1 on: February 26, 2014, 01:36:05 PM »

i keep smoking capacitors in the internal crossovers of these enclosures. any suggestions?
Sounds like you may be under powered.  What amplifire are you using?
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skip grumblis

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Re: eaw fr153e crossovers
« Reply #2 on: February 26, 2014, 09:31:43 PM »

Sounds like you may be under powered.  What amplifire are you using?
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skip grumblis

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Re: eaw fr153e crossovers
« Reply #3 on: February 26, 2014, 09:43:39 PM »

I'm using a crown ca9. 600w/chan
Cabinets are rated @ 375 . I'd like more headroom, but I'm good there.
« Last Edit: February 26, 2014, 09:46:15 PM by skip grumblis »
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Tim McCulloch

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Re: eaw fr153e crossovers
« Reply #4 on: February 26, 2014, 09:45:18 PM »

Sounds like you may be under powered.  What amplifire are you using?

What makes you think he's underpowered?  He could just as easily be overpowering and getting into deep power compression where more signal equals no more acoustic output.
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"If you're passing on your way, from Palm Springs to L.A., Give a wave to good ol' Dave, Say hello to progress and goodbye to the Moonlight Motor Inn." - Steve Spurgin, Moonlight Motor Inn

Tim McCulloch

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Re: eaw fr153e crossovers
« Reply #5 on: February 26, 2014, 09:46:36 PM »

I'm using a crown ca9. 600w/chan
Cabinets are rated @ 375 . I'd like more headroom, but I'm good there.

If you're burning up crossovers I think you don't have Enough Rig for the Gig®.  You need louder speakers or more speakers (dependent on the coverage geometry).
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"If you're passing on your way, from Palm Springs to L.A., Give a wave to good ol' Dave, Say hello to progress and goodbye to the Moonlight Motor Inn." - Steve Spurgin, Moonlight Motor Inn

Paul G. OBrien

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Re: eaw fr153e crossovers
« Reply #6 on: February 26, 2014, 10:03:39 PM »

Blown components = overpowered.. period.  The only question remaining is how was that accomplished.

Assuming the replacement caps were the correct voltage rating and the overall design isn't somewhat flawed to begin with(it's EAW not Cerwin Vega), there isn't much left besides user error. Was the amp driven hard into a limiter or into clipping? Both of those actions could create a situation where an otherwise well matched amp is overpowering the speaker system.
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skip grumblis

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Re: eaw fr153e crossovers
« Reply #7 on: February 26, 2014, 10:08:35 PM »

I'm not flogging anything. Gain structure is solid from channel to amp. system comp/limit is a dbx 160a with the threshold set so  only the occasional red light of reduction happens. The enclosures sound good when working. i may have exaggerated the frequency of the failures though, it's happened twice in the last 5 years
« Last Edit: February 26, 2014, 10:25:06 PM by skip grumblis »
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Paul G. OBrien

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Re: eaw fr153e crossovers
« Reply #8 on: February 26, 2014, 11:08:09 PM »

What value are the caps that are blowing?
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skip grumblis

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Re: eaw fr153e crossovers
« Reply #9 on: February 27, 2014, 08:37:18 AM »

What value are the caps that are blowing?
[/quote
Last caps I replaced were bought from eaw, so I'm assuming all the values were correct for that crossover. I will check the values as soon as I pull the x-overs out this time. Thanks for your time and input. I normally run all my amps with any onboard limiting disengaged, relying on input level to keep stuff in a safe range. I will check those switches though. You know, because shit happens.
« Last Edit: February 27, 2014, 08:41:42 AM by skip grumblis »
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Re: eaw fr153e crossovers
« Reply #9 on: February 27, 2014, 08:37:18 AM »


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