SAL Full Range Drivers

[Variac]

here's the store listing:
https://diyaudiostore.com/collection...nt=39385464388

Dick Olsher reviews a pair and has a simple open baffle design using them:
http://blackdahlia.com/html/Tip_85.html

[mordikai]

Mark- maybe you can talk your bro Dick into using a more useful scale for his frequency response measurements, 20db scale, geez.

p.s. I did hear the drivers at B.A. and liked them both in sound and construction.

[Nelson Pass]

Attached is my MLSSA measurement of the most recent SAL drivers in
my SLOBs. Crossover is at 160 Hz (1 pole for the SAL), and I have applied
some baffle step of -4dB @ 2.5 Khz.

Response curve is about as good as you get with a FR driver. They are a
little less efficient than most of the top rank FR's, but for that you get more
bottom end in a sealed box, so they combine some of the virtues of the
SEAS Exotic bottom with some of the air of a Lowther / Feastrex / Voxative.

Excellent articulation and spatial presentation. They do well in either a box
or OB, and I think that they are an excellent value.

I have a DIY active OB crossover with EQ for it, and plan to offer it as a
kit in the store.

[scottjoplin]

^ Have you heard the Jordan Eikona? I am wondering how they compare. The Jordan has a good low frequency extension and a useful rising response

[Nelson Pass]

No experience, although I am have pair of J92's in front of me, and have
always liked them.

[Nelson Pass]

Going through my files I found a pair of passive crossover
networks I worked up in March 2016 for the SALs in the OB
with the Eminence 15's.

The pc artwork for the active filters is about done, and a
partial kit will be available through the store.

[Michael Rothacher]

Cool, thanks for that. I ordered a pair so I can play along at home.

[Variac]

That's the appeal, since SAL only makes one model, everyone has the same driver so when one of us comes up with an idea, others can unbolt their drivers and try it, or a variant, and then give an opinion, or measurements...whatever.

I believe the boxes Papa used were .75 cu. ft., and I assume sealed looking at the T-S parameters, but to hear him tell it he went into his garage and there were pair of speaker cabinets that looked "about right". He popped the drivers in and it sounded so good he never tried another box. Maybe a 1.0 cu.ft. Cabinet is "better" Get out your box calc programs!

[mordikai]

Originally Posted by Nelson Pass

Attached is my MLSSA measurement of the most recent SAL drivers in
my SLOBs. Crossover is at 160 Hz (1 pole for the SAL), and I have applied
some baffle step of -4dB @ 2.5 Khz.

Response curve is about as good as you get with a FR driver. They are a
little less efficient than most of the top rank FR's, but for that you get more
bottom end in a sealed box, so they combine some of the virtues of the
SEAS Exotic bottom with some of the air of a Lowther / Feastrex / Voxative.

Excellent articulation and spatial presentation. They do well in either a box
or OB, and I think that they are an excellent value.

I have a DIY active OB crossover with EQ for it, and plan to offer it as a
kit in the store.

Thanks, this is encouraging.

[Variac]

Thiele-Small Parameters:

Fs: 68Hz
Qhms: 8.2
Vas: 47L
Mms: 7.4 g.
Qes: 0.89
Re: 5.9 Ohm
Cms: 0.7 mm/N
Qts: 0.81
Le: 0.149 @ 10KHz
SPL: 94 dB @ 2.83Vrms
BL: 4.57 Average measurement