New pair of Alpair 11ms

For the small extra cost the terminals with tabs on are great, and Stefan can supply nice crimping to make wiring up a doddle.

I used the same ones (as they were cheap) for a cabinet, I just soldered them outside the box and fed the cable through, easy with tabs for the driver, so easy to change.

But the spade ones are well worth it.
 
Regarding my search for a supplier for the wood, I have just ordered (from a small company in Cornwall) enough cut panels for the medium Nostromo to make 4 cabinets in 18mm BB/BB Russian birch ply, all for £92 delivered. Total cost to date including drivers, hardware, wood and glue comes to £390. Will report back in a few weeks on findings/progress.
 
You could contact Stefan at KJF Audio; possibly not local, but he may be able to assist. Re the numbered questions, in order

1/ Because it's not required, lagging the non-opposing faces provides the required amount of damping for these enclosure designs.

Half way through my build, so a sub-question to the above, if I lag all internal surfaces with say 8mm wool, is that the same as lagging the non-opposing faces with 16mm wool?
 
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All done...

Running-in as I write.
 

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How would these be for an on-wall application?

The shallow depth is appealing and due to the on-wall reinforcement I think that a relatively small, sealed enclosure would give acceptable extension (though this setup would also have a subwoofer).

Also playing around with the idea of this driver in a 2-way. Crossed over quite high to the tweeter, maybe 5-8 kHz. (I've got a new DSP I am eager to use if you can't tell....).

One concern I have is internal reflections coming back out through the cone in a shallow box. Should I be looking at something else or can this be reasonably mitigated? If I go with a sealed box I could really get crazy with the stuffing since port airflow is not an issue.
 
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How would these be for an on-wall application?

The shallow depth is appealing and due to the on-wall reinforcement I think that a relatively small, sealed enclosure would give acceptable extension (though this setup would also have a subwoofer).

Also playing around with the idea of this driver in a 2-way. Crossed over quite high to the tweeter, maybe 5-8 kHz. (I've got a new DSP I am eager to use if you can't tell....).

One concern I have is internal reflections coming back out through the cone in a shallow box. Should I be looking at something else or can this be reasonably mitigated? If I go with a sealed box I could really get crazy with the stuffing since port airflow is not an issue.

To add:
Thinking about sealed enclosure around 4.5L. Extension looks smooth and although it tapers relatively early (-3dB at 90Hz, -10dB at 55Hz) I think with the half-space reinforcement and the right crossover to a subwoofer it could sound quite good.

I am leaning towards a 2-way using a similar overall profile to the attached image. May keep the crossover closer to 3.5->5 kHz rather than approach 8, I had forgotten that it might be necessary to keep the tweeter extremely close to prevent phase troubles at a frequency like that.
 

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…a relatively small, sealed enclosure...

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You would probaly want a fairly low Q box so not all that small. 10-13 litres would be my suggestion.

Something along the lines of Poplar/Aspen ML-TL could be done for a wall hugging box with more bass.

One concern I have is internal reflections coming back out through the cone in a shallow box.

Definitely a concern.

dave
 

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