Help need for WMTMW design.

Padel · 15th April 2006, 04:49 AM

Hello all,

This is maybe a stupid question but are there any drawbacks of wiring the 4 Ohm drivers in series in this design? Is it more wise to choose the 8 Ohm version of these and wire them in parallel?

Woofers are the Vifa MG22WO09-04ohm midranges the Vifa MG14WK09-04ohm and tweeter the Morel MDT-33.

The speakers are WMTMW tower, about 90 litres cabinet for the woofers tuned to 28Hz (EBS, Extended Bass Alignment) and 4 litres for the Mids.
Drivers are Time Align.

The design was inspired from the Duntech Prince.

Regards
P

David Gatti · 15th April 2006, 06:41 AM

The mid has a sensitivity of 89dB. What's the sensitivity of the woofer?
You get no sensitivity gain if you wire the woofers in series, so the combined woofers will have a sensitivity way below that of the midrange, and even more so when you factor in baffle step. I wouldn't recommend you use 4 ohm woofers in this type of design.

15th April 2006, 04:49 AM	#1
Padel diyAudio Member Join Date: Aug 2003 Location: Greece	Help need for WMTMW design. Hello all, This is maybe a stupid question but are there any drawbacks of wiring the 4 Ohm drivers in series in this design? Is it more wise to choose the 8 Ohm version of these and wire them in parallel? Woofers are the Vifa MG22WO09-04ohm midranges the Vifa MG14WK09-04ohm and tweeter the Morel MDT-33. The speakers are WMTMW tower, about 90 litres cabinet for the woofers tuned to 28Hz (EBS, Extended Bass Alignment) and 4 litres for the Mids. Drivers are Time Align. The design was inspired from the Duntech Prince. Regards P

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15th April 2006, 06:41 AM	#2
David Gatti diyAudio Member Join Date: Mar 2004 Location: Melbourne, Australia	The mid has a sensitivity of 89dB. What's the sensitivity of the woofer? You get no sensitivity gain if you wire the woofers in series, so the combined woofers will have a sensitivity way below that of the midrange, and even more so when you factor in baffle step. I wouldn't recommend you use 4 ohm woofers in this type of design.