Double chamber reflex 3-way

activexp · 26th September 2011, 03:15 PM

I've knocked together a pair of 3-ways in dual chamber reflex enclosures. The main chambers are 59L and were originally passive sub cabinets. The second chambers of 19L are grafted on to the subs with a port connecting the two. Both external ports exit to the back.

The drivers are:
Woofer: 12" GDN300 4 ohm SPL 95dB
Mid: HiVi DMA-A 50mm soft dome
Tweeter: Visaton G25FFL

Waveguide: Visaton 220x150

The XO points are 800/5000Hz, 1st order on the woofer and 2nd order on the mid and tweeter originally with no attenuation. The clarity and presence of vocals was impressive with a crisp breathy quality with little sibilance. The downside was a 'loss' of bass. To correct the imbalance I attenuated the mid and tweeter by 3dB which seems about right.

Efficiency is high and has already been a cause of complaint from the neighbours.

Overall dimensions (mm) H1000 x W340 x D350

Visaton waveguide

Visaton G25FFL

26th September 2011, 03:15 PM	#1
activexp diyAudio Member Join Date: Jul 2009	Double chamber reflex 3-way I've knocked together a pair of 3-ways in dual chamber reflex enclosures. The main chambers are 59L and were originally passive sub cabinets. The second chambers of 19L are grafted on to the subs with a port connecting the two. Both external ports exit to the back. The drivers are: Woofer: 12" GDN300 4 ohm SPL 95dB Mid: HiVi DMA-A 50mm soft dome Tweeter: Visaton G25FFL Waveguide: Visaton 220x150 The XO points are 800/5000Hz, 1st order on the woofer and 2nd order on the mid and tweeter originally with no attenuation. The clarity and presence of vocals was impressive with a crisp breathy quality with little sibilance. The downside was a 'loss' of bass. To correct the imbalance I attenuated the mid and tweeter by 3dB which seems about right. Efficiency is high and has already been a cause of complaint from the neighbours. Overall dimensions (mm) H1000 x W340 x D350 Visaton waveguide Visaton G25FFL __________________ https://sites.google.com/site/stevesstuffproject/Home

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