Sdx12
Parameters
JBL w12
VOICE COIL DC RESISTANCE: REVC (OHMS)* . . . . . 3.20
VOICE COIL INDUCTANCE @ 1 KHZ: LEVC (MH)* . . . . . . 0.75
DRIVER RADIATING AREA: SD (FT2) . . . . . . . . 0.516
SD (M2) . . . . . . . . 0.048
MOTOR FORCE FACTOR: BL (TM)* . . . . . . . 14.64
COMPLIANCE VOLUME: VAS (FT3) . . . . . . . . 1.58
VAS (LITERS) . . . . . 44.75
SUSPENSION COMPLIANCE: CMS (µM/N) . . . . 135.28
MOVING MASS, AIR LOAD: MMS (GRAMS). . . . 184.80
MOVING MASS, DIAPHRAGM: MMD (GRAMS) . . . 178.72
FREE-AIR RESONANCE: FS (HZ) . . . . . . . . 31.83
MECHANICAL Q: QMS . . . . . . . . . . . 6.68
ELECTRICAL Q: QES . . . . . . . . . . . . 0.55
TOTAL Q: QTS . . . . . . . . . . . . 0.51
MAGNETIC-GAP HEIGHT: HAG (IN) . . . . . . . . . 1.00
HAG (MM) . . . . . . . 25.40
VOICE-COIL HEIGHT: HVC (IN) . . . . . . . . . 2.60
HVC (MM) . . . . . . . 66.04
MAXIMUM EXCURSION: XMAX (IN) . . . . . . . .0.80
(ONE-WAY LINEAR) XMAX (MM) . . . . . . 20.32
So yes they are different but not that much I think, they both want to achieve low distortion, high excursion and I think xbl and ddd are a bit the same right?
JBL w12 is only available second hand.
I wonder if I should get a used w12 or a new sdx12 for a sealed woofer that would be used with a very low cutoff frequency
Parameters
- Fs 21.3 hz
- Senstitivity 87.2 @ 2.83V/1M
- Mms 275.9 g
- BL 18.4 N/A
- Cms 0.276 mm/N
- Vas 67.5 L
- Qms 3.962
- Qes 0.414
- Qts 0.374
- Nom Imp 4 ohm
- Re 3.7 ohm
- Le 1.38 mH
- Xmax 28 MM
- Sd 491 cm^2
JBL w12
VOICE COIL DC RESISTANCE: REVC (OHMS)* . . . . . 3.20
VOICE COIL INDUCTANCE @ 1 KHZ: LEVC (MH)* . . . . . . 0.75
DRIVER RADIATING AREA: SD (FT2) . . . . . . . . 0.516
SD (M2) . . . . . . . . 0.048
MOTOR FORCE FACTOR: BL (TM)* . . . . . . . 14.64
COMPLIANCE VOLUME: VAS (FT3) . . . . . . . . 1.58
VAS (LITERS) . . . . . 44.75
SUSPENSION COMPLIANCE: CMS (µM/N) . . . . 135.28
MOVING MASS, AIR LOAD: MMS (GRAMS). . . . 184.80
MOVING MASS, DIAPHRAGM: MMD (GRAMS) . . . 178.72
FREE-AIR RESONANCE: FS (HZ) . . . . . . . . 31.83
MECHANICAL Q: QMS . . . . . . . . . . . 6.68
ELECTRICAL Q: QES . . . . . . . . . . . . 0.55
TOTAL Q: QTS . . . . . . . . . . . . 0.51
MAGNETIC-GAP HEIGHT: HAG (IN) . . . . . . . . . 1.00
HAG (MM) . . . . . . . 25.40
VOICE-COIL HEIGHT: HVC (IN) . . . . . . . . . 2.60
HVC (MM) . . . . . . . 66.04
MAXIMUM EXCURSION: XMAX (IN) . . . . . . . .0.80
(ONE-WAY LINEAR) XMAX (MM) . . . . . . 20.32
So yes they are different but not that much I think, they both want to achieve low distortion, high excursion and I think xbl and ddd are a bit the same right?
JBL w12 is only available second hand.
I wonder if I should get a used w12 or a new sdx12 for a sealed woofer that would be used with a very low cutoff frequency
So I bought a jbl w12 gti mk1 for 200€. kind of a bet, I will see. It looks like a speaker that olds well though.
I will use it sealed as a near feald sub.
I will use it sealed as a near feald sub.