Package Includes:

• (2) Memphis Audio SRX1240 12" SRX Car Subwoofer Sub 500w Peak / 250w RMS / 4 Ohm
• (1) Rockville RD12 Dual 12” 1.25 cu.ft. 3/4” MDF Sealed Subwoofer Enclosure Sub Box
• (1) Rockville dB12 2000 Watt Peak/500 Watt Dyno-Certified RMS Mono 2 Ohm Amplifier Car Amp
• (1) Rockville RWK81 8 Gauge Complete Amp Installation Wire Kit with 100 % Copper RCA
• 20 Drywall Wood Screws (Wood screws are the type of screws; the screws are actually made of metal)
• 20 Feet of 14 AWG Blue Speaker Wire
• 4 Spade Terminals

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Description of SRX1240:

Whether it’s your first system or you just need a little more bass in your trunk, the Street Reference line is the ultimate value subwoofer on the market. Redesigned from the ground up, SR subs are indistinguishable from their predecessors with improved performance, durability and cosmetics.

Features:

• Memphis Audio SRX1240 12" SRX Car Subwoofer Sub 500w Peak / 250w RMS / 4 Ohm
• 12 AWG compression terminals
• Anodized aluminum voice coil former
• Optimized for both sealed and vented enclosures
• Lightweight but rigid cone design for improved efficiency
• Polypropylene cone for improved durability
• Progressive poly cotton spider for controlled motion resulting in lower distortion
• Rubber surround for improved durability

Specifications:

• Size: 12"
• RMS Power: 250w
• Peak Power: 500w
• Voice Coil: Single
• Impedance: 4-Ohm
• Sensitivity (dB): 85
• Magnet Size (Oz): 39
• Mounting Depth (in): 4.92
• Cut Out Diameter (in): 11.10
• Voice Coil Diameter (in): 2
• Warranty: 1

TS Parameters:

THIELE SMALL PARAMETERS
Resonant Frequency  (fs)	26 Hz
Mechanical Q	4.57 Qms
Electrical Q	0.84 Qes
Total Q	0.71 Qts
Sensitivity	85.2 dB
Xmax Linear	0.24 in.
Xmax Mechanical	0.8 in.
Displacement	0.09 cf.
Air volume of suspension (Vas)	3.027 cf.
Moving Mass (Mms)	163 g
Suspension Compliance (Cms)	0.234 mmN
Effective piston area (Sd)	510.71 SqCm
Motor Strength (Bl)	10.07 TM
VOICE COIL & MAGNET
Impedance Series	4 ohms
Impedance parallel	4 ohms
Voice coil diameter	2 in.
RMS Power	250 Watts
Peak Power	500 Watts
Magnet weight	40 oz
Magnet diameter	4.73 in.
PHYSICAL DIMENSIONS
Mounting depth	4.96 in.
Cutout Diameter	11.1 in.
Frame Outside Diameter	12.6 in.
ENCLOSURE RECOMMENDATIONS
Single sub sealed	1.25 cf.
Dual subs Sealed	2.5 cf.
Single sub vented	2 GROSS cf.

All About Your dB12: