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Infinity Reference 1200S (REF1200S)

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

Infinity
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• 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 ref1200S
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List price $179.95
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$119.95

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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


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 REF1200S 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) 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


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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:

Reference 1200S

Weight:

12.80lbs

Internal SKU:

ref1200S

Internal Product ID:

95306

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) thumbnail image

5 star
86%
4 star
14%
3 star
0%
2 star
0%
1 star
0%



Durability
4.7
Value
4.9
Features
4.6
Design
4.7
Usability
4.7

Customer Photos & Videos


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

42 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

41 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

37 found this helpful


Perfection

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

34 found this helpful


Impressed

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

35 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

33 found this helpful


Very excited to install!

Got the 1200s, arrived in perfect condition and on time. Will be installed with Kicker 400.1. Will update after install

By Scott on January 4, 2026 Checkmark Icon Verified purchase




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• Polypropylene Cone
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• Sensitivity: 84 dB

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