My OB

[davidallancole]

I finally found a person with a digital camera who was willing to take a picture of my baffles.

The fullrange up top is a RS 40-1271 and the two woofers in the bottom are RS 40-1024.

These are not set up even near to optimum. All three drivers on the baffle are ran in parallel. I don't have any extra amps to run it biamped yet adn i have not spent the time to run a crossover on it. You can definetly hear voice and higher frequency stuff coming out of the bottom woofers.

Anyways, here they are.

 

[Nelson Pass]

Nice piece of wood, though.

 

[Geoff H]

They are nice baffles, prettier than mine. David, this might help for a quick solution till you get set up with bi-amps.

http://www.diyaudio.com/forums/showthread.php?postid=1296122#post1296122

Are all drivers 8 ohm?

Geoff.

 

[davidallancole]

Thanks Nelson.

Yes, Geoff, all the speakers are 8 ohms. I am not sure what you are refering to in the attached post that would work as a quick solution.

 

[Geoff H]

Yeah, sorry my slip. The crossover. Wire the 2 bass drivers in parallel. I'm running a 4 ohm bass helper with a 8 ohm main.

http://www.diyaudio.com/forums/showthread.php?postid=1282395#post1282395

 

[davidallancole]

So if I am getting you right, you are saying run the two woofers in parallel and then the pair in series with the fullrange?

 

[Geoff H]

Yes, that's right. Start with 150uf shunting the bass pair. I used 3 47s in parallel, so I could replace one with a lower value to fine tune. Then you want an inductor to shunt the top driver. As a starting point, try Xl=Z of the driver at crossover.

Note the series x-o will exhibit a low z at crossover freq without the drivers connected. Also the bass driver needs to be out of phase or you will have phase cancellation at the xo.

Good luck.

Geoff.

 

[davidallancole]

Thanks

 

[davidallancole]

Would there be any benefit to removing the wings and putting the lower woofers into an H baffle or U baffle and then adding a inductor inline with the woofers to cut them off around ~260-280 Hz (the center baffle is 10.5 inches)?

I am thinking of cutting the wood for the H baffle or U baffle out of the wings and adding that to the center baffles that the speakers are all ready in.