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felixx 10th December 2006 07:47 PM

amp for bass open baffle
 
My concern is to drive a pair of 15" drivers(spl=98db) mounted in open baffle -dipole type.....and that is on each side of my room.

I'm thinking on F1 or F2.But also I need a good damping factor for that two 15" 8 ohms drivers mounted in parallel.....so that will be 4 ohms.

I need a good advice on this ....concerning to other dipole drivers that require a lot of power on the same spl.
In open baffle the power is needed.

Should I try class A or AB?The F1 or F2 should be suitable?

Many thanks.

Nelson Pass 11th December 2006 07:28 PM

Dick Olsher reports good results with F2's on the bottom end,
and they will drive 4 ohms.

Having said that, though, you should try different things and see
what works for you.

:cool:

Stefano 12th December 2006 06:56 AM

Hi Felixx!

If you want to use amps to drive dipole woofer, I think that you may need more dumping than that of a current source like the firstwatt, see more on www.linkwitzlab.com

Hope it may help!

Stefano

felixx 12th December 2006 02:37 PM

Thx. Nelson....& Stefano.
I know ...for dipole the high damping factor is needed and the dipole is power eating concept.
Maybe I would try AB -op-mosfet's output transistors or an UCD kit class D.
What concept do you think is suited for that aplication considering for the main driver(Supravox 215 rtf bicone-96db-spl) I will go with tube amps?

Or should I go for bass dipole with tube amps(45w) and for the mains with an new F1 or F2 or ZV9?
Thx.

Nelson Pass 12th December 2006 07:59 PM

Quote:

Originally posted by Stefano
If you want to use amps to drive dipole woofer, I think that you may need more dumping than that of a current source like the firstwatt, see more on www.linkwitzlab.com

Very likely. Easiest thing to do is get a variety of power resistors
to make 1 ohm to 16 ohms, and try them in series with a
conventional voltage source or in parallel with a current source.


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