Garage
Shop

See all parts that fit your 1964 Thunderbird

Infinity Reference 1200S (REF1200S) (Like New - Open Box)

1000W Peak (250W RMS) 12" Reference Series Single 2-or 4-ohm Shallow Car Subwoofer

Infinity
Shop all Infinity
item photos coming soon
Product videos
highlight-star-icon

• Peak Power: 1000 watts
• RMS Power: 250 watts
• Impedance: Single 2 or 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.25"
• Sensitivity: 92 dB

Learn more about the ls-ref1200s-u9

We apologize

This item has been discontinued

Product Highlights


• Peak Power: 1000 watts
• RMS Power: 250 watts
• Impedance: Single 2 or 4 ohm
• Polypropylene Cone
• Rubber Surround
• Mount depth: 3.25"
• Sensitivity: 92 dB

Description


Infinity brand icon

Authorized dealer

Item Condition - Like New (Open Box):

This product works and looks like new. It may have been opened for a visual demo or product video. In some cases there may be signs of an attempt at installation like opened packaging or mounting screw holes used, but there is no real sign of use or wear. Includes all original parts, packaging and accessories (or suitable replacement)


Infinity Reference 1200S


Low-Profile Design

Because today’s compact cars offer less space, the Infinity Reference Subwoofers are designed to fit into small enclosures. They’re slim, sleek, stylish, and don’t sacrifice on sound.


Harman-Proprietary SSITM (Selectable Smart Impedance)

Unlike most dual-voice coil woofers, which provide either 1 or 4 ohms or 2 or 8 ohms, the Infinity Reference Subwoofers allow the listener to 2-ohm and 4-ohm at the flip of a switch, providing the two most often used impedances from a single woofer. This allows the system designer unparalleled flexibility in extracting every last watt from your amplifier without compromising stability and thermal safety margins.


Frequency Response As Low as to 27Hz

Your audio is filled with delicious sounds. Unfortunately, you’re not always hearing them all. With lows that dig down into the depths of 27Hz, you’ll hear the low-end frequencies you’ve been missing.


OEM-Level Reliability Testing

Infinity tests every speaker design to the same rigid specifications as the automakers, subjecting them to extreme conditions that would break lesser speakers. We freeze them, bake them, shake them, blast them with ultraviolet light and drive them at full power for days to make sure your audio investment lasts for years.


Product Details:

  • 12" Single 2 or 4 ohm Reference Series Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 250 watts
  • Polypropylene Cone
  • Rubber Surround
  • Harman-proprietary SSI (Selectable Smart Impedance)
  • OEM-level reliability testing
  • 2" High Temperature Voice coil
  • 7.65 mm Xmax
  • Frequency Response: 27 - 175 Hz
  • Resonance Frequency (Fs): 22.82 Hz
  • Sensitivity: 92 dB
  • Recommended sealed box volume: 0.6 cubic feet - 1.04 cubic feet
  • Recommended ported box volume: 1.3 cubic feet - 2.1 cubic feet
  • Top-mount depth: 3.25"
  • Cutout diameter: 11.125"
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

  • Priced Individually

PDF IconInfinity LS-REF1200S-U9 owner’s manual

Product history:

(newest, current model)
Infinity Reference 123WSL thumbnail
(previous model, replaced by Infinity Reference 1200S (REF1200S) (Like New - Open Box))
Infinity Reference 1200S thumbnail
(previous model, replaced by Infinity Reference 123WSL (INFSUBRF123WSL))

Subwoofer Wiring Guide


Wiring Guide to Wire 1 Infinity Reference 1200S (REF1200S) (Like New - Open Box) Subwoofer

Mono Amp

Wiring Guide to Wire 2 Infinity Reference 1200S (REF1200S) (Like New - Open Box) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 3 Infinity Reference 1200S (REF1200S) (Like New - Open Box) Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Infinity Reference 1200S (REF1200S) (Like New - Open Box) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp

Specifications & Details


Subwoofer Specifications
Series
Reference Series
Subwoofer Size
12"
Peak Power Handling
1000 watts
RMS Power Handling
250 watts
Voice Coil(s)
Single
Impedance (Per Voice Coil)
2 or 4 ohm
Voice Coil Diameter
2"
Frequency Response
27 - 175 Hz
Sensitivity
92 dB
Xmax (millimeters)
7.65 mm
Subwoofer Design
Round / Circle
Main Cone Color
Black
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Magnet Structure
Single Stacked
Subwoofer Grille
No
Re-Cone Kit Available
No
CTA-2031 Compliant
No
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Sealed
Minimum Sealed Box Volume
0.6 cubic feet
Optimum Sealed Box Volume
0.75 cubic feet
Maximum Sealed Box Volume
1.04 cubic feet
Minimum Ported Box Volume
1.3 cubic feet
Optimum Ported Box Volume
1.75 cubic feet
Maximum Ported Box Volume
2.1 cubic feet
Top-Mount Depth (Mounting Depth)
3.25"
Cutout Diameter
11.125"
Shallow Mount Installation
Yes
T/S Parameters (Electromechanical)
Free-Air Resonance (Fs)
22.82 Hz
Equivalent Compliance (Vas)
97.56 liters
Total Speaker Q Value (Qts)
0.54
Electrical Q Value (Qes)
0.64
Electrical Resistance of Voice Coil (Re)
4.16 ohm
Mechanical Q Value (Qms)
3.57
What is in the box?
Paperwork
User manual
WITB: Subwoofers
Subwoofer
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

LS-Reference 1200S

Weight:

12.80lbs

Internal SKU:

ls-ref1200s-u9

Internal Product ID:

207016

Product and How-to Videos


  • Harman International: The Pursuit of Great Sound
  • Car Subwoofer Size Buying Guide | What Size of Sub Should I Get?

Customer Ratings & Reviews


Infinity Reference 1200S (REF1200S) (Like New - Open Box) thumbnail image

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


CA-989 small

Coby CA-989

UL Approved Universal Power A/C Adapter-800mA

$9.99

List price $13.99

4652CFP small

Infinity Reference 4652cfp 4" x 6"

(1)

$74.99

List price $109.99

No picture

Pyramid PB175 Power Series

$49.99

List price $99.99

VM9510 small

Jensen VM9510

Motorized In-Dash 7" LCD with DVD Multimedia (VM-9510)

(13)

$449.99

List price $1199.99

AVA1210 small

Boss AVA1210

7-Band Pre-Amp Half-DIN EQ with Subwoofer Output & Master Volume Control

(12)

$79.99

List price $96.99

D1200-2 small

DEI - Directed Audio D1200 Open Box

1200W Max, Class D Monoblock Amplifier

$119.99

List price $499.99

Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1964 Ford Thunderbird

2000 Dodge Viper

2002 Ford Explorer

2012 Mitsubishi Eclipse

2001 Ford Escape

1987 Dodge Shadow

1971 Ford Thunderbird

2012 Dodge Challenger

2002 Mitsubishi Eclipse

2011 Ram 4500

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.