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Replacement Speakers?

Vic Winters

Vic Winters

Apr 20, 2006
4,057
398
Western NY
#1
I tore one of the 10's in my BX4210A (go ahead start the bashing if you must). It's gonna take 2-2.5 weeks for a repair/replacement. I have a show on the 7th, so I need to come up with something, quick. I found a pair of Ampeg 10's on the bay. But the only problem is that they're 400 watt RMS with 4 ohm imepdance. The Behringer are 240 watt with 8 ohm impedance run in parallel. I can't drop the head's impedance below 4 ohms. Would replacing the Behringers with Ampegs possibly work as a solution?

Thanks.
 
#2
The drivers must be specification matched to the cabinet. Getting the appropriate specs to match the drivers from Behringer is not going to happen, nor can you get the specs on the Ampeg drivers to find out if they're compatable anyway. If Behringer is giving you a new driver for free wait for it and rent a cab for the gig. Otherwise just get another cab.
 
#4
I'm having trouble following your proposed scheme here...

Are the Ampeg speaker loose, or are they in a cabinet?
Are you wanting to plug the Behringer head into an Ampeg cab?
If you can be specific about the impedences of ALL the speakers, I can help you do this right.

Dave
 
#5
I would check on the Parts Express web site for a comparable 10. The specifications Bill is referring to are called Thiele Small Parameters. They are a set of values that describe the driver sonically. It is the only way, other then trial and error, to design a cab to match a driver. They HAVE to be matched to sound good. If you call parts express they might be able to help you out. Never tried it but they carry all kinds of musical equipment drivers. You will need a 8 ohm driver rated at 250 watts. Do NOT try to match a 4 ohm driver with a resistor. Although it would work electrically, if it were big enough, it will turn a lot of power into heat. :hmm: Good Luck!
 
#6
Vic Winters said:
What specs would be required?
Click to expand...
They are called T/S specs, there are at least fourteen of them and they define the compatability of a driver and the cabinet that it goes into. Matching a driver to a cabinet is a complicated affair, and if you don't know what you're doing you shouldn't attempt it.
 
#8
OK, so that's a no go. The tear is between the aluminum cone and the soft surrounding material. No real way to repair it. I guess I'll have to wait it out, pray it comes back before the 7th. If not I'll borrow something from my old teacher.
 
#9
The problem with Behringer cabs that I have run into already, is that their speakers require a smaller diameter hole that Eminence drivers do. You have to open the hole up about a quarter inch all the way around , to make the Eminence fit the hole. The crappy mdf , compressed paper crap, that the Behringer cabs are made of makes this a very tricky job to do, without wrecking the hole completely. I used a very fine toothed blade in my jig saw, and slowly and carefully, opened the hole up, but it's not easy to do on those, unless alot of care is used in doing it. So if you are going to do it proceed slowly and with extreme caution with that jig saw!!
 
#10
What model did you use? I'm having a hard time finding a 240 watt, 8 ohm driver. Due to my current circumstance, I'll take any route necessary short of buying a whole new rig which is out of my price range. It's nearing the gig, (7th) I called GC customer support on Saturday, gave them all the info required, they said they'd call me back in 1-2 days for a UPS store to send out the old speaker (still nothing). I know there's no way I'll get it repaird (improbable due to the type of damage) or a new one by the 7th. My old teacher/family friend doesn't loan gear, I don't know how good the PA support will be. My only option is to buy a driver somewhere, but every place I've checked doesn't meet even the most basic of the specs I need.

Please someone help.
 
#12
The Eminence Beta 10 is suitable in a wide range of cab sizes and I don't think you could go wrong with it. It will almost surely sound better than the Behringer speakers and will last a heck of a lot longer. BTW I would replace both of them if you go this route.

If you measure the interior of the cab and port(s) I can model the results with this or maybe some other speakers.
 
#13
Sweet thanks MuzikMan.

Basic info:

Depth from inside wall to inside wall is 12.0625"
Width from inside wall to inside wall is 24.6875"
Height from inside top to inside bottom is 18.75"
Port width is 13.875"
Port height is 2.5"

There is some other stuff in there, mainly a small support between the two speakers. And supports around the port.

Speaker "divider"/support (Depth x Width x Height)

12.0625" x 0.6875" x 4.6875"

Bottom port supports (2 of them)

12.0625" x 0.6875" x 2.75"

Width support

4.9375" x 24.6875" x 0.5"

Not taken into account are the round recessed handles (2) and the horn.
 
#15
Either the Eminence Beta 10 ($60) or the Deltalite II 2510 ($100) woukd wirk well in that cab. They both have the same f3 of 55hz which is good for a 2x10. They are both also going to give you about 98db @1w/1m in a 2x10 cab. They are both 250w drivers. The difference is the excursion limits. The beta 10 xmax is 3mm and the deltalite is 4.2mm. That means that the deltalite will not distort as easily as the beta 10.

BTW you didn't give me the depth of the port. Somewhere between 5 and 7 inches would be good for either driver.

Either way you go it would be an upgrade from your current drivers. Good Luck! :hyper:
 

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