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Specification
AgeRangeDescription : Adult
AssemblyInstructions : No assembly required
AudioDriverSize : 12 inches
AudioDriverType : dynamic_driver
AudioOutputMode : Surround
Brand : Alpine
BulletPoint : Features and Specifications TBA
BulletPoint1 : The next generation of sound performance is here with the new R-Series subwoofers featuring a larger motor structure for more accurate and authoritative bass.
BulletPoint2 : New Motor Structure – The new R-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation.
BulletPoint3 : Oversized Dust Cap – The new hybrid poly ceramic composite dust cap ensures rigidity while also providing incredible internal damping (vibration absorption) to smooth out the bass response and reproduce tight bass.
BulletPoint4 : Increased Accuracy – Alpine’s High Amplitude Multi-Roll (HAMR) Surround Technology allows the cone to efficiently move air while staying cool resulting in incredible accuracy from the subwoofer.Increased Accuracy – Alpine’s High Amplitude Multi-Roll (HAMR) Surround Technology allows the cone to efficiently move air while staying cool resulting in incredible accuracy from the subwoofer.
BulletPoint5 : Twist-Lock Grille Mount System
Color : black
CompatibleDevices1 : Smartphone
CompatibleDevices2 : Car Audio System
CompatibleDevices3 : MP3 Player
CompatibleDevices4 : Laptop
CompatibleDevices5 : Gaming Console
CompatibleWithVehicleType : Car
ConnectivityProtocol : Wired
ConnectivityTechnology : Bluetooth
ControllerType : Voice Control
ControlMethod : voice
CustomerPackageType : FFP
ExternallyAssignedProductIdentifier1 : 793276084651
ExternallyAssignedProductIdentifier2 : 0793276084651
FrequencyResponse : 50 hertz
Hazmat1 : MAGNETIZED MATERIAL
Hazmat10 : EG_NoAir
Hazmat11 : ES_NoAir
Hazmat12 : FR_NoAir
Hazmat13 : GB_NoAir
Hazmat14 : IE_NoAir
Hazmat15 : IN_MagnetizedMaterial
Hazmat16 : IT_NoAir
Hazmat17 : JP_NoAir
Hazmat18 : MX_MagnetizedMaterial
Hazmat19 : NL_NoAir
Hazmat2 : UN2807
Hazmat20 : PL_NoAir
Hazmat21 : SA_NoAir
Hazmat22 : SE_NoAir
Hazmat23 : SG_NoAir
Hazmat24 : TR_NoAir
Hazmat25 : US_MagnetizedMaterial
Hazmat26 : ZA_NoAir
Hazmat27 : 9
Hazmat3 : AE_NoAir
Hazmat4 : AU_NoAir
Hazmat5 : BE_NoAir
Hazmat6 : BR_MagnetizedMaterial
Hazmat7 : CA_MagnetizedMaterial
Hazmat8 : CN_MagnetizedMaterial
Hazmat9 : DE_NoAir
Impedance : 4 ohm
IncludedComponents : Grille mount system
InputVoltage : 15 volts
IsWaterproof : FALSE
ItemName : Alpine R2-W12D4 12" R-Series R2 Subwoofer, Dual 4-Ohm, 750 Watt RMS
ItemPackageDimensions_Height : 37.7952 centimeters
ItemPackageDimensions_Length : 23.495 centimeters
ItemPackageDimensions_Width : 37.465 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : vehicle-subwoofers
Manufacturer : Alpine
Material : Aluminum, Paper
ModelName : R2-W12D4
ModelNumber : R2-W12D4
MountingType : Flush Mount
NumberOfCircuits : 1
NumberOfItems : 1
NumberOfPowerLevels : 1
PackageLevel : unit
PartNumber : R2-W12D4
PowerSourceType : Corded Electric
ProcessorCount : 2
ProductDescription : Alpine R2-W12D4 12" R-Series "R2" Subwoofer, Dual 4-Ohm, 750 Watt RMS

PRODUCT OVERVIEW
The next generation of sound performance is here with the new R-Series subwoofers featuring a larger motor structure for more accurate and authoritative bass.
New Motor Structure – The new R-Series subwoofers now feature larger, double-stacked magnets that contribute more motor force for deeper bass and tighter bass control compared to the previous generation.
Oversized Dust Cap – The new hybrid poly ceramic composite dust cap ensures rigidity while also providing incredible internal damping (vibration absorption) to smooth out the bass response and reproduce tight bass.
Increased Accuracy – Alpine’s High Amplitude Multi-Roll (HAMR) Surround Technology allows the cone to efficiently move air while staying cool resulting in incredible accuracy from the subwoofer.

General Specs:
Size: 12”
Dimensions: 11.61” x 11.61” x 6.43”
Frequency Response: 24Hz - 200Hz
Power Range: 300W - 750W RMS
Power Handling: 750W RMS / 2250W Peak
Magnet Weight: 144 oz
Voice Coil Diameter: 65.5 mm (2.6”)

T/S Parameters:
Sensitivity (1W/1m): 84.6 dB
DC Resistance (Re): 3.5Δ + 3.5Δ
Free Air Resonance (Fs): 30 Hz
Equivalent Stiffness: 32.8 L
Mechanical Q (Qms): 6.51
Electrical Q (Qes): 0.55
Total Q (Qts): 0.51
Cone Area (Sd): 479 cm2
Linear Excursion (Xmax): 20 mm
Mechanical Travel (Xmech): 72 mm

BOX SPECS -
SEALED BOX RANGE:
Net Internal Volume: 0.55 - 1.0 ft3

RECOMMENDED SEALED BOX:
External Dimensions: 14” x 14” x 11”
Gross Internal Volume: 0.85 ft3
Net Internal Volume: 0.75 ft3

VENTED BOX RANGE:
Net Internal Volume: 1.0 - 1.5 ft3
Fb, Tuning: 33-37 Hz

RECOMMENDED VENTED BOX:
External Dimensions: 12.5” x 14” x 25.5”
Gross Internal Volume: 1.91 ft3
Vent Area (W x H): 18.75 in2 (12.5” x 1
ProductSiteLaunchDate : 2022-01-11T14:39:07.512Z
RecommendedUsesForProduct : music
SeriesNumber : 1200
Size : Dual 8"
SpeakerAmplificationType : Passive
SpeakerSize : 12 inches
SpeakersMaximumOutputPower : 2250 watts
SpeakerType : Subwoofer
SpeakerType1 : Subwoofer
SpeakerType2 : Surround Sound
SpecificUsesForProduct : Car audio systems
StreetDate : 2022-06-30T00:00:01Z
Style : Dual 8"
SupplierDeclaredDgHzRegulation : not_applicable
SurroundSoundChannelConfiguration : 5.1, 7.1
TargetGender : unisex
UnitCount : 1
UnspscCode : 52161500
VehicleSpeakerSize : 12
WarrantyDescription : 1 YEAR
WarrantyType : Limited
Wattage : 750 watts
Wattage1 : 800 watts
Wattage2 : 400 watts
WirelessCommunicationTechnology : Bluetooth