I was surfing along the net and found a restoration tread witch included a pair of speakers with a bass solution that made me curious.
The speakers. the Dali 40.
Have 4 identical woofers. 2 of them on the front baffle in ported chambers, BUT installed back to back with a second pair playing into a pair of sealed chambers, acting as a type of band pass system sharing the ported chamber with the front woofers.
Do the inner woofers act as a kind of 0.5 helpers, just boosting a small area down low, or how does this really works?
Dali themselves have named this L-linkage VEB2R bassrelex.
But there is not much info to be found.
The speakers. the Dali 40.
Have 4 identical woofers. 2 of them on the front baffle in ported chambers, BUT installed back to back with a second pair playing into a pair of sealed chambers, acting as a type of band pass system sharing the ported chamber with the front woofers.
Do the inner woofers act as a kind of 0.5 helpers, just boosting a small area down low, or how does this really works?
Dali themselves have named this L-linkage VEB2R bassrelex.
But there is not much info to be found.
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Found a Brochure.
To big to upload.
https://www.dali-speakers.com/media/3390/brochure_dali_40_se.pdf
To big to upload.
https://www.dali-speakers.com/media/3390/brochure_dali_40_se.pdf
That IS quite odd. Basically the speaker on the front of the cabinet is in a vented box, and the woofer inside the cabinet is in a bandpass box.
I would expect that the response would not be ideal, because a bandpass box and a vented box are tuned to different frequencies, even if the volume is the same. Bandpass boxes are generally tuned higher than vented boxes, even if the F3 is the same.
I would expect that the response would not be ideal, because a bandpass box and a vented box are tuned to different frequencies, even if the volume is the same. Bandpass boxes are generally tuned higher than vented boxes, even if the F3 is the same.
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