Infinity Reference 1200S (REF1200S)

1000W Peak (250W RMS) 12" Reference Series Selectable Impedance Car Subwoofer

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

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Infinity Reference REF1200S with Ported Enclosure

1000W Peak (250W RMS) 12" Reference Series Single 4-Ohm Car Subwoofer



Current Promotions (1 offer)

Get a Free roll of Belva 16 Gauge Speaker Wire. Simply click the "Add Both to Cart" button and you will see your savings at checkout. This offer cannot be combined with any other coupons or offers.

Infinity Reference 1200S (REF1200S)

100% off

Priced separately $127 94

Promo Savings of $12 99

Total price:

$114 95

Product Highlights

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


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Authorized dealer

Selectable Smart Impedance Technology

Infinity’s latest Reference subwoofers offer incredible installation flexibility. Their low-profile design allows them to fit perfectly into even the most shallow of enclosure. Polypropylene woofer cones deliver exceptional bass response at frequencies as low as 27Hz. But what makes these subs really stand out is their Harman-proprietary SSITM (Selectable Smart Impedance), which allows the subwoofer to present the amplifier with either a 2 or 4 ohm load at the flip of a switch.

Product Details:

  • 12" Single 2 or 4 ohms Reference Series Subwoofer
  • Power Handling:
    • Peak: 1000 watts
    • RMS: 250 watts
  • Polypropylene Cone
  • Rubber Surround
  • Shallow-mount subwoofer
  • 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
  • Sealed box volume: 0.75 cubic feet
  • Ported box volume: 1.75 cubic feet
  • Top-mount depth: 3.25"
  • Cutout diameter: 11.125"
  • Authorized Internet Dealer
  • Protective subwoofer grille: No
  • 1-year Manufacturer's Warranty

  • Priced Individually

Subwoofer Wiring Guide

Wiring Guide to Wire 1 Infinity Reference 1200S (REF1200S) Subwoofer

Mono Amp

Wiring Guide to Wire 2 Infinity Reference 1200S (REF1200S) Subwoofers

Mono Amp

Mono Amp - Option 1

2 Channel Amp

2 Channel Amp - Bridged

Wiring Guide to Wire 3 Infinity Reference 1200S (REF1200S) Subwoofers

4 Channel Amp

Wiring Guide to Wire 4 Infinity Reference 1200S (REF1200S) Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp

Specifications & Details

Subwoofer Specifications
Reference Series
Subwoofer Size
Peak Power Handling
1000 watts
RMS Power Handling
250 watts
Voice Coil(s)
Impedance (Per Voice Coil)
2 or 4 ohms
Voice Coil Diameter
Frequency Response
27 - 175 Hz
92 dB
Xmax (millimeters)
7.65 mm
Subwoofer Design
Round / Circle
Main Cone Color
Woofer Composition
Woofer Surround
Subwoofer Grille
Re-Cone Kit Available
CTA-2031 Compliant
Recommended Enclosure Specifications
Recommended Enclosure Type
Ported / Vented
Minimum Sealed Box Volume
0.75 cubic feet
Minimum Ported Box Volume
1.75 cubic feet
Top-Mount Depth (Mounting Depth)
Cutout Diameter
Shallow Mount Installation
Electromechanical Parameters
Free-Air Resonance (Fs)
22.82 Hz
Equivalent Compliance (Vas)
97.56 liters
Total Speaker Q Value (Qts)
Electrical Q Value (Qes)
Electrical Resistance of Voice Coil (Re)
4.16 ohms
Mechanical Q Value (Qms)
What is in the box?
User manual
Warranty/Registration card
WITB: Subwoofers
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details


Model Number:

Reference 1200S



Internal SKU:


Internal Product ID:


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

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Customer Reviews

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Slim subs big bass best bang for the buck.

I would absolutely recommend Infinity Reference REF1200s they require less than a cubic foot of air space. I am very impressed with these subs, the box I have them mounted in is 4.5" wide. They bump very hard I love them. I have them set at 4 ohms on a 250 watt rms amp. They do exactly what I was hoping for. Great value great product. I was skeptical of slim subs in general but being that I have a crew cab Silverado I had limited space to work with. The mirror actually vibrates and I can feel the bass hit. More than I expected for sure.

By Travis on August 14, 2017 Checkmark Icon Verified purchase


found this helpful.

Great subwoofers

These subs sound amazing. They shake the truck and hit hard. For shallows I am extremely impressed. 2 12" with a JL 500 watt amp matches them perfectly. Would recommend for awesome sound.

By Jacob on August 25, 2017 Checkmark Icon Verified purchase


found this helpful.

Great Subwoofer

This subwoofer hits harder than I thought it would. I was looking for great overall sound, not overkill. This subwoofer worked out perfect for my application.

By Justin on March 30, 2018


found this helpful.


Running em on 4ohms in my 2020 F150, fits snug under my seats. Pleasantly surprised! Very affordable and gets the job done for what I’m looking for.

By Terrance on March 13, 2023 Checkmark Icon Verified purchase


found this helpful.

Solid sub

Good sound and doesn't require alot of power, but most importantly to me fits nicely under back seat of my double cab tundra.

By Aaron on May 29, 2016 Checkmark Icon Verified purchase


found this helpful.


Bought 2 of these to out in my buddies s-10 ran about 300 watss to each and was very impressed the reviews I read doesn't do them any justice.... Definitely a good buy for limited space

By Rocky on May 8, 2017 Checkmark Icon Verified purchase


found this helpful.


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