Hey Guys,
Hope you all are doing well.
I am working on some passive sub-project, actually 2 subwoofers. 1 for music and 1 for movies. I preferred a sealed sub for music and a ported for movies. Currently, I have 2 drives.
1: JBL A1500HI (car sub same spec as old CS1214), RMS 325w
T/S spec:
Re (OHMS): 3.6
Pe : 325w
Le (MH): 2.57
SD (IN2): 85.4
SD (CM2): 551.00
BL (Tm): 14.08
VAS (FT3): 2.7
VAS (LITERS): 76.7
Cms (um/N): 177.00
Mms (GRAMS): 179.00
MmD (GRAMS): 171.00
Fs (Hz): 28.00
EBP: 49.12hz
Qts: 0.54
Qms: 8.85
Qes: 0.57
HAG (IN): 0.307
HAG (MM): 7.8
Hvc (IN): 1.26
Hvc(MM): 32
Xmax (in): 0.48
Xmax (mm): 12.1
EBP: 49.1
2. Iwai 12Inch 4e200W (RMS 200w)
T/S spec:-
Z(OHMS):4
Re (OHMS): 3.261
Pe : 200w
Le (MH): 2.29
Dd (mm): 258.0
SD (sq.cm): 522.79
BL (Tm): 14.231
VAS (LITERS): 86.571
Cms (um/N): 225.527
Mms (GRAMS): 167.763
Fs (Hz): 25.875
EBP: 58.9407744875 hz
Qms: 6.911
Qts: 0.413
Qes: 0.439
Xmax (mm): 12.0
SPL: 91.059dB (2.83V/1m)
EBP: 58.9
going to pair with a 300w Class A/B amp.
I have simulated it on WinISD. As per EBP value, the JBL is more suited for sealed, but I have to put it in a 111.5 ltr box to get Qtc for 0.707 which is bigger than its vas. Otherhand the Iwai driver can get 0.707 at 47.4 ltr box. So I am confused which is good for which.
Can I achieve 20hz response from any of these drivers and how?
Please let me know your suggestions...
Hope you all are doing well.
I am working on some passive sub-project, actually 2 subwoofers. 1 for music and 1 for movies. I preferred a sealed sub for music and a ported for movies. Currently, I have 2 drives.
1: JBL A1500HI (car sub same spec as old CS1214), RMS 325w
T/S spec:
Re (OHMS): 3.6
Pe : 325w
Le (MH): 2.57
SD (IN2): 85.4
SD (CM2): 551.00
BL (Tm): 14.08
VAS (FT3): 2.7
VAS (LITERS): 76.7
Cms (um/N): 177.00
Mms (GRAMS): 179.00
MmD (GRAMS): 171.00
Fs (Hz): 28.00
EBP: 49.12hz
Qts: 0.54
Qms: 8.85
Qes: 0.57
HAG (IN): 0.307
HAG (MM): 7.8
Hvc (IN): 1.26
Hvc(MM): 32
Xmax (in): 0.48
Xmax (mm): 12.1
EBP: 49.1
2. Iwai 12Inch 4e200W (RMS 200w)
T/S spec:-
Z(OHMS):4
Re (OHMS): 3.261
Pe : 200w
Le (MH): 2.29
Dd (mm): 258.0
SD (sq.cm): 522.79
BL (Tm): 14.231
VAS (LITERS): 86.571
Cms (um/N): 225.527
Mms (GRAMS): 167.763
Fs (Hz): 25.875
EBP: 58.9407744875 hz
Qms: 6.911
Qts: 0.413
Qes: 0.439
Xmax (mm): 12.0
SPL: 91.059dB (2.83V/1m)
EBP: 58.9
going to pair with a 300w Class A/B amp.
I have simulated it on WinISD. As per EBP value, the JBL is more suited for sealed, but I have to put it in a 111.5 ltr box to get Qtc for 0.707 which is bigger than its vas. Otherhand the Iwai driver can get 0.707 at 47.4 ltr box. So I am confused which is good for which.
Can I achieve 20hz response from any of these drivers and how?
Please let me know your suggestions...
Attachments
Due to highish Qts a ported box for either of those will be huge.
If you want to hit 20Hz sealed you need a Linkwitz Transform.
If you want to hit 20Hz sealed you need a Linkwitz Transform.
