Posted by Dav [ 209.165.23.100 ] on January 04, 2006 at 10:31:38:

To the LA gurus out there:

I'd like to build a quasi array using 8 5" drivers and a single dome tweeter at its center. I've read Jim's paper and Im stuck with achieving the following goals:
- 8 drivers per side
- roughtly 95dB efficiency
- minimum 6 ohm load
The drivers i plan to use have 86dB eff each @ 8ohms.

Doing the basic math described in Jim's paper, I 'best' I can do is 4 parallel groups totalling 98dB and 4 ohms.

The only solution I can think of is to add series resistance (4ohms) to get down to 95dB and 8 ohm load.

My questions are then:

Is this a acceptable solution?

Is series resistance a good approach?

If so, should I use several equal resitors in parallel for proper resistor/power managememt?

Is there another option/solution?

Thank you all in advance!

Regards
Dave

Replies:

• Thank You - Dav 15:46:33 01/07/06 (0)
• Re: please advice: 8 drivers, 95dB, 6ohm+ - Jim Griffin 22:01:56 01/05/06 (0)
• Re: please advice: 8 drivers, 95dB, 6ohm+ - RKM 20:47:34 01/05/06 (0)