mini array BT

joeybutts

Have someone wanting me to turn a small cigar box into a BT radio but dimensions don’t allow for much, as I’m gonna try and keep a compartment for a few cigars.  

Ive always been intrigued by the aura 1” full ranges and was thinking this is the perfect opportunity to try them, 3 per side.  Leaving the compartment for cigars I’m left with roughly 45 cu in per side.

am I better off just using a 2”-2.5” driver or is there validity in using the three whispers?  Thanks for thoughts fellas.

tajanes

Take a look at the Celestion AN275 2 ¾ drivers; https://www.parts-express.com/celestion-an2775-2-3-4-full-range-compact-array-driver--294-2046

As well at the Tectonic TEBM46C20N-$B BMRs; https://www.parts-express.com/tectonic-tebm46c20n-4b-bmr-3-full-range-speaker-4-ohm--297-2157

I have played around with both (in applications above 240Hz) > good all around 'broad range' drivers, esp. when used in pairs / multiple in arrays

Andy

joeybutts

Thanks Andy, I do like the look of the Celestions, though I think I won't be able to fit two per side fo the tectonic.....baffle would end up 5.75" tall and 6.75" wide.

At the size of those Celestions, would I still need to consider comb filtering and account for it?

tajanes

tech when wavelength gets below 2x center-to-center of drivers you can measure issues, but thats going to be what beyond 4000 Hz? for these drivers / placement. At least this is beyond the sensitive hearing range: https://biology.stackexchange.com/questions/53062/why-is-the-human-ear-most-sensitive-to-4000-hz-tones,
and although you can measure, doubt that at a listening distance you could 'hear' any issues.  

joeybutts

What about the little wavecor?  Has anyone heard that full range?

Ed_Perkins

Voice Coil magazine tested the neo version of the FR070.  Looks very good, but of course it costs a bit more.

Ed_Perkins

Evidently the review .pdf is too large to attach, here's a LINK to it.

joeybutts

Thanks Ed!  In comparison to the SB 2.5" I think it flls a hair short on paper, but maybe to the ears is better.  I may give it a shot for comparisons sake unless thought to be a waste.