Got them all together... they are measured after ~5 minutes of break-in time. You will see the CMS loosen up another 33% after some serious play time which will both reduce the FS and Qts figures of the drivers.

These are the latest versions with shorting rings (hence lower Le figures). Otherwise identical to prior SA models in T/S specs.

Some Re variance is shown based on coil temperature from break-in period. D2 is closer to 4.0 in series and D4 7.0 in series at room temperature.

-----

10" D2

Re: 4.29 ohms

Fs: 35.4 Hz

VAS: 10.13 L

Qes: 0.52

Qms: 5.41

Qts: 0.48

Le: 3.41 mH

BL: 20.40 NA

Mms: 230 g

Cms: 87.8 uM/N

Sens: 81.0 dB 1w/1m

10" D4

Re:7.08 ohms

Fs: 36.6 Hz

VAS: 10.66 L

Qes: 0.54

Qms: 5.30

Qts: 0.49

Le: 4.71 mH

BL: 24.82 NA

Mms: 205 g

Cms: 92.4 uM/N

Sens: 81.6 dB 1w/1m

12" D2

Re: 4.57 ohms

Fs: 33.71 Hz

VAS: 21.21 L

Qes: 0.58

Qms: 5.34

Qts: 0.52

Le: 3.40 mH

BL: 21.64 NA

Mms: 280 g

Cms: 79.43 uM/N

Sens: 83.21 dB 1w/1m

12" D4

Re: 7.07 ohms

Fs: 33.96 Hz

VAS: 24.63 L

Qes: 0.55

Qms: 5.15

Qts: 0.49

Le: 4.84 mH

BL: 25.67 NA

Mms: 237 g

Cms: 92.27 uM/N

Sens: 84.22 dB 1w/1m

15" D2

Re: 4.61 ohms

Fs: 34.88 Hz

VAS: 54.69 L

Qes: 0.72

Qms: 6.52

Qts: 0.65

Le: 3.39 mH

BL: 21.76 NA

Mms: 338.85 g

Cms: 61.42 uM/N

Sens: 86.81 dB 1w/1m

15" D4

Re: 7.75 ohms

Fs: 36.95 Hz

VAS: 52.35 L

Qes: 0.85

Qms: 6.63

Qts: 0.75

Le: 4.98 mH

BL: 25.87 NA

Mms: 315 g

Cms: 58.8 uM/N

Sens: 86.68 dB 1w/1m

-----

I made a one-page spec-sheet for them that should start showing up in our next production run as well -- should make life easier for everyone getting these guys!

PDF

Edited March 30, 201114 yr by sundownz

Impressive!

Great job!

Hoping to have my SA-15's in this weekend!

. where does one find xmax for the SA-15?

. is there a reason it is not stated within these specs?

*looking to calculate port area, using an approach inspired through research within this thread.

thank you for the help,

chop

. where does one find xmax for the SA-15?. is there a reason it is not stated within these specs?

*looking to calculate port area, using an approach inspired through research within this thread.

thank you for the help,

chop

Cannot say for sure, but when I got mine I beleive they said 19mm.

From PDF- 19.0mm X‐Max by 70% BL method one‐way (38.0mm peak to peak)

Edited April 9, 201114 yr by sefugi

. where does one find xmax for the SA-15?. is there a reason it is not stated within these specs?

*looking to calculate port area, using an approach inspired through research within this thread.

thank you for the help,

chop

Cannot say for sure, but when I got mine I beleive they said 19mm.

From PDF- 19.0mm X‐Max by 70% BL method one‐way (38.0mm peak to peak)

thanks for the helpfull info!

i will use this to help provide chicago fan some input on his build.

(off topic: big fan of you and yours!)

Correct - I put it in the PDF.