Up for sale is a BRAND new Polk 12" SR sub. I did take it out of its box for pics but its still in its factory sealed bag. If anyone has heard one of these, they have outstanding SQ and are some lowend monsters. Again this speaker is brand new, never opened, never powered, never mounted. I am looking to get $210 plus shipping. Here are some specs:
SR Signature Features:
Massive die-cast aluminum basket to house the 16 pound motor structure.
Dual 4 Ohm Voice Coil (DVC) gives you maximum wiring and Impedance options (Single Voice Coil (SVC) model also available).
A 2.5 inch glass/epoxy voice coil former wound with four layers of heavy gauge high temperature Aluminum wire provides the highest power handling and reliability.
Voice coil is bathed in cooling air via an extensive network of vents in the pole piece and basket.
Specially designed curved vanes smooth the airflow to minimize air turbulence that could cause noise and “chuffing.”
Dual progressive roll spiders precisely control the cone’s long excursion for the ultimate in “tight,” detailed and musical bass.
Polk’s Klippel Distortion Analyzer, which uses laser technology to measure and optimize driver behavior under high output, helps maximize linearity, minimize distortion, flatten and extend frequency response.
ABS Cone employs catenary geometry for greater distortion damping stiffness.
NBR (Nitrile Butyl Rubber) Surround damps distortion inducing resonance as it stands up to harsh automotive environments.
Hex-key terminals (use a 2.5mm Allen key) for clean, professional hookups can accommodate up to 8 gauge speaker wire.
Driver Complement
Woofer 1 - 12" Diameter (30.48cm)
NBR (Nitrile Butyl Rubber) Surround
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Electrical
Overall Frequency Response 20-200 Hz
Nominal Impedance Dual 4 ohms
Power Handling (continuous) 700 w
Power Handling (peak) 1400 w
Efficiency 89 dB
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Driver Mounting Depth
Top Mount 7-3/5" (19.30cm)
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Theile/Small Parameters
Resonant Frequency 30 Hz
Qms 8.0
Qes 0.6
Qts 0.55
Vas 53 Liters
Cms 150 Micro Meters
Bl 19 series Tesla Meters
Sd 499 sq. cm / 77.35 sq. in
Xmax (linear) 16.25 mm / 0.64 in
Xmax (mechanical) 63.5 mm / 2.5 in
Mms 183 g
Driver Weight 26.5 lbs
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Factory sealed box
In its factory sealed bag
SR Signature Features:
Massive die-cast aluminum basket to house the 16 pound motor structure.
Dual 4 Ohm Voice Coil (DVC) gives you maximum wiring and Impedance options (Single Voice Coil (SVC) model also available).
A 2.5 inch glass/epoxy voice coil former wound with four layers of heavy gauge high temperature Aluminum wire provides the highest power handling and reliability.
Voice coil is bathed in cooling air via an extensive network of vents in the pole piece and basket.
Specially designed curved vanes smooth the airflow to minimize air turbulence that could cause noise and “chuffing.”
Dual progressive roll spiders precisely control the cone’s long excursion for the ultimate in “tight,” detailed and musical bass.
Polk’s Klippel Distortion Analyzer, which uses laser technology to measure and optimize driver behavior under high output, helps maximize linearity, minimize distortion, flatten and extend frequency response.
ABS Cone employs catenary geometry for greater distortion damping stiffness.
NBR (Nitrile Butyl Rubber) Surround damps distortion inducing resonance as it stands up to harsh automotive environments.
Hex-key terminals (use a 2.5mm Allen key) for clean, professional hookups can accommodate up to 8 gauge speaker wire.
Driver Complement
Woofer 1 - 12" Diameter (30.48cm)
NBR (Nitrile Butyl Rubber) Surround
--------------------------------------------------------------------------------
Electrical
Overall Frequency Response 20-200 Hz
Nominal Impedance Dual 4 ohms
Power Handling (continuous) 700 w
Power Handling (peak) 1400 w
Efficiency 89 dB
--------------------------------------------------------------------------------
Driver Mounting Depth
Top Mount 7-3/5" (19.30cm)
--------------------------------------------------------------------------------
Theile/Small Parameters
Resonant Frequency 30 Hz
Qms 8.0
Qes 0.6
Qts 0.55
Vas 53 Liters
Cms 150 Micro Meters
Bl 19 series Tesla Meters
Sd 499 sq. cm / 77.35 sq. in
Xmax (linear) 16.25 mm / 0.64 in
Xmax (mechanical) 63.5 mm / 2.5 in
Mms 183 g
Driver Weight 26.5 lbs
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Factory sealed box
In its factory sealed bag
