Subwoofer alpine Type S 12" 900w

[alinuan]

salut, va rog sa ma ajutati si pe mine in legatura cu doua subwoofare Alpine 12" Type-S Series - SWS1222D
care doresc sa le pun intr-o incinta sau macar sa fac una potrivita doar pentru unu din ele
Am o masina hatchback, mai exact un golf 4
Problema este ca nu stiu exact ce model de incinta sa fac si de cati litri si la ce frecventa,etc:
[!]macar cati litri trebuie si ce diametru la gaura de bass reflect[!]
bandpass sau bass reflex tindand cont de specificatiile producatorului

Key Features:

Frequency Response: 26Hz – 1kHz
Kevlar Reinforced Pulp Cone
High Excursion Tapered Half-Roll Santoprene® Surround
Mirrored Progressive with Perimeter Venting
Compound Radius Curve Pole Geometry
Heavy Gauge Steel Basket
Extended Dual Flare Pole Vent
High Strength Brass Voice Coil Bobbin
One-Side layout Design, Heavy Duty 8ga. Push Terminals
Magnetically Optimized Motor Structure
Designed and Engineered in the USA
Features:

4-Layer High Temp Wire on High-Strength Brass Former
Aluminum Coated Poly Parabolic Dust Cap
Designed and Engineered in the USA
Dual Voice Coil Design
Extended Dual Flare Vented Pole
Extra Rigid Custom Steel Frame with Integrated Leg Vent System
FEA Optimized High Excursion Injected Santoprene® Surround
FEA Optimized Mirrored Progressive Nomex® Spiders with
Integrated Tensil Leads
FEA Optimized Motor Structure with CRC Geometry
Heavy-Duty 8ga Push Terminals with Connection Jumpers
Hidden Screw Gasket
Kevlar Reinforced Pulp Cone
One-Sided Terminal Layout
Specifications:

Diaphragm Material: Aluminum Coated Poly and Kevlar Reinforced Pulp
Displacement Front Mounted: 0.095 cu.ft.
Displacement Rear Mounted: 0.123 cu.ft.
Frame Design: Deep Draw with Vented Leg/Spider Plateau, Integrated Terminal Landing
Gasket Design: Injection Moulded Hidden Screw Design with Front/Rear Sealing
Magnetic Weight: 72oz.
Motor Structure Configuration and Pole Geometry: Extended Dual Flare Pole Vent Compound Radius Curve
Mounting Depth (top mount): 6.6”
Mounting Diameter (top mount): 11”
Optimum Sealed Box Volume: 1.25 cu.ft.
Optimum Vented Box Volume: 1.5 cu.ft.
Recommended Box Types: Sealed/Vented/Bandpass
Recommended Sealed Box Volume: 0.85 – 1.5 cu. ft.
Spider Material: Nomex®
Surround Design and Material: High Excursion Tapered Half-Roll, Injection Moulded Santoprene®
Terminal Type: Heavy Duty 8ga. Push with Housing, Banana Plug Jumper
Vented Box Volume Range, Vent Diameter Length: 1.25-2.0 cu.ft,, 4" ID x 12" Long
Voice Coil Design: 4-Layer Dual Voice Coil
Voice Coil Diameter: 1.5"
Power Handling

Power Handling Capacity (Peak): 900W
Power Handling Capacity (RMS): 300W
Thiel Small Parameters

Coil Height (Hvc): 33.8mm
Cone Area (Sd): 485sq. cm
D.C.Coil Resistance (Re): 1.8ohm + 1.8ohm
Electrical Q (Qes): 0.65
Equivalent Suspension Stiffness (Vas): 54 liters(1.9cu.ft.)
Free Air Resonance (Fs): 31Hz
Frequency Response: 26Hz - 1kHz
Gap Height (Hag): 8mm
Impedance (Nominal): 2ohm + 2ohm
Inductance (Le): 2.31 mH / 0.78 mH
Linear Excursion (X linear): 12.9mm
Magnetic Linear Excursion (Xmag): 14
Mechanical Excursion (Peak-to-Peak): 52mm
Mechanical Q (Qms): 12.63
Sensitivity: 87 dB/W/M
Total Loudspeaker Q (Qts): 0.62
Approximate Weight:

Shipping: 15 lbs