Semi-trapezoidal 2-way

[Earl K]

Yes and no. The improvements in imaging and the lowering of midrange coloration due to a narrower baffle far out weight the minimal change in bass response. IMO.

- John , I quickly fired that first post off before going shopping .
- I really should have started with a statement that I very much like your design ! In fact, I follow all your building endeavours with great interest because your "fit & finish" is spot on.

- Now, I realize that by first trotting out the negatives , I've likely given the wrong impression . Sorry for that .

- I agree that the positives of low diffraction baffle-design far outweighs any apparent loss of bass in the balance of midrange to bass voicing .

- As first mentioned, a "voicing" rebalance can be addressed/restored through altering the LC components within the crossover ( the lowpass portion ) . I do believe that this rebalancing exercise is more empirically based than pure science .

- The need for varying degrees of "bafflestep" compensation ( in a crossover ) is something that I don't think has been chewed over much in this forum ( which is ironic , since nearly everything else under the sun has been talked about at least twice )

[Zilch]

BB6P suggests your volume (red) is a little small for optimum "Extended Bass" tuning. Heavy fill to gain virtual volume doesn't help much. Bumping it up to 3 cuft. gets you to the BB6P recommendation (black) for LE14H. Note the additional ~2.5 dB at 30 Hz.

Consider flaring out the sides toward the bottom per my Z2 design to gain that volume. This also makes them non-parallel all the way down, and gives the boxes more of a "base."

http://audioheritage.org/vbulletin/s...7&postcount=52

For Hamilton's L200t3 clones, we went even larger, 3.5 cuft., if I recall.

http://audioheritage.org/vbulletin/s...070&#post82070

With the Z1 prototype, I was able to do the side bend with a saw kerf from the inside. It's actually not much of an angle; filling the kerf with structural adhesive and backing it with a full-length mitered brace might be easier than trying to piece together the sides....