PRODUCT DESCRIPTION
There is a strong following of the old SD-2 series from 2011 still to this day. While the SD-3 and soon to be the SD-4 are much stronger in terms of low F3 & low distortion in small sealed boxes... some folks miss the ability of the SD-2 to take a tremendous beating (it shared the cone, surround, and spider of the SA series... just with a shorter coil). Sundown Audio has decided to "revive" the SD-2 with several updates to reduce distortion, increase airflow around the coil, and increase long-term reliability (motor bolted together, aluminum cap bolted on, shorting ring added to magnet ID, spider bolted down, bigger leads, etc) by introducing a new "SLD" lineup.
Sealed Enclosure |
1 cu ft |
Ported Enclosure |
1.5 cu ft |
Recommended Tuning |
35Hz |
Recommended Port Area |
26 sq in |
Displacement |
.12 cu ft |
Depth |
5.5 |
Outside Diameter |
12.625″ |
Cut-Out |
11.125 |
T/S SPECS |
SLD 12″ D2 |
SLD 12″ D4 |
RE (Ohms) |
3.65 |
6.85 |
FS (Hz) |
42.959 |
45.142 |
VAS (L) |
26.889 |
29.481 |
Qes |
0.691 |
0.619 |
Qms |
2.227 |
2.298 |
Qts |
0.415 |
0.487 |
Le (mH) |
||
BL (NA) |
19.868 |
23.025 |
Mms (Grams) |
204.319 |
168.773 |
Cms (uM/N) |
67.177 |
73.652 |
Sens (dB @ 1w/1m) |
88.1 |
88.3 |