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Hifonics OLM1600D2

1600W 12" MT. Olympus Competition Series Dual 2 ohm Subwoofer


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The Gods Have Spoken

The Gods of HIFONICS are proud to introduce the MT Olympus Competition OLM1600 series subwoofers! From top to bottom these subs have been designed for incredible SPL and SQ!

Here are the important features: The OLM1600 series features a DVC 2-Ohm (OLM1600D2) and DVC 4-Ohm (OLM1600D4) model to allow for multiple wiring configurations making this series versatile for any application you can imagine. Starting with a massive 182oz high energy magnet with a ported back plate for heat dispersion, you know they mean business. Supporting the motor structure is an ultra ridged aluminum die-cast basket with a polished grey finish. The moving parts feature a one-piece pressed paper cone/dustcap for structural integrity, high roll santoprene rubber surround for long excursion, reinforced cone-neck support for stability and optimally spaced dual spiders for precise inward and outward excursion control. The 3 high-temp voice coil is wrapped on an aluminum former and ready to take every bit of the 1600w RMS/3200w MAXX! The OLM1600s are designed for both ported and sealed enclosure designs.

General Features:

  • 12" Dual 2 ohm Mt. Olympus Competition Series Subwoofer
  • Power Handling:
    • Peak: 3200 watts
    • RMS: 1600 watts
  • Impedance: Dual 2 ohm
  • One-Piece pressed paper Cone
  • High roll Santroprene Rubber Surround
  • Reinforced Cone-Neck Joint
  • Optimally spaced dual spider cast basket
  • 3" High temperature voice coil
  • 182oz. High Energy magnet motor structure
  • Frequency response: 20-250 Hz
  • Resonance Frequency (Fs): 29.14
  • Top-mount depth: 6"
  • Sensitivity: 83.8 dB
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

Hifonics OLM1600D2 thumbnail
(newest, current model)
Hifonics OLM1612 thumbnail
(previous model, replaced by Hifonics OLM1600D2)

Subwoofer Specifications

Subwoofer Series
Each subwoofer manufactured is part of a series. This is the name of the subwoofer's series.
Mt. Olympus (Hifonics)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
3200 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
1600 watts
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
2 ohms
Voice Coil Diameter
Diameter of voice coil, usually measured in inches.
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 250 Hz
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
82.86 dB
Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
33.5 mm
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Round / Circle
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Pressed Pulp Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Santoprene Rubber
Magnet Structure
Defines the overall structure of the subwoofers magnet.
Triple Stacked
Subwoofer Grille
Most subwoofers are able to accommodate a universal grille; however, some subs include a grille and others have a specific, optional grille available for purchase separately. If "yes", then the subwoofer includes a grille. If "optional (sold separately)" the matching grille will need to be purchased in addition to the sub.

Recommended Enclosure Specifications

Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Ported / Vented
Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.00 cubic feet
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
1.25 cubic feet
Minimum Ported Box Volume
This value indicates the minimum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.00 cubic feet
Maximum Ported Box Volume
This value indicates the maximum ported box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
2.25 cubic feet
Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Diameter
The actual diameter of the hole you will need to cut out if you are creating a new mounting location for this speaker, or if you are mounting a subwoofer in a box.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.


Electromechanical Parameters

Free-Air Resonance (Fs)
The free-air resonance frequency of the subwoofer, measured in Hz. At this frequency the weight of the moving parts is perfectly balanced with the subwoofers suspension system.
30.86 Hz
Equivalent Compliance (Vas)
This is the amount of air that has the same stiffness as the subwoofers suspension. The greater the rating, the lower the stiffness and larger recommended enclosure. It is measured in Liters.
26.54 liters
Total Speaker Q Value (Qts)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including all dimensionless losses. Essentially, a high Qts value (closer to 1.0) means the subwoofer is great for sealed enclosures and a low Qts value (closer to 0) means the woofer is great in vented enclosures. A Qts of around 0.45 means the woofer will work decently in either enclosure type.
Electrical Q Value (Qes)
The subwoofers relative damping (Q) at the resonance frequency (Fs), including electrical losses. Also called the mechanical damping of the subwoofer. The unitless measurement usually varies from 0.5 10.
Electrical Resistance of Voice Coil (Re)
Amount of DC resistance of the subwoofer when measured with an ohm meter. Typically, this will read less than the impedance rating of the subwoofer.
3.21 ohms
Mechanical Q Value (Qms)
This is the subwoofers relative damping (Q) at the resonance frequency (Fs), including mechanical losses. Also called the mechanical damping of the subwoofer. This unitless measurement usually varies from 0.5 10.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


ensenada, PR

Big Bass

September 18, 2013

I love these subs, hifonics didnt let me down. clear, crisp sound. these subs really shake the foundation. you cant beat the price either. thumbs up to

7 of 12 found this helpful

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Get it!!!

April 15, 2014

I was doubting myself if I should get this sub. Don't do that. If you are limited in space and $ this thing will pound in a 2 cubic foot ported enclosure tuned to 32hz. Can you get better, sure. But for 200 bucks you'll be surprised .You'll get tired of adjusting your mirror.

8 of 15 found this helpful

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salt lake, UT

takes what u can throw at it but..

April 4, 2014

this sub want power! my only problem is ,,,,, i seem to not get the punch i want... i believe its my box as space is limited the back of a saab vert. wish i knew a good box builder... this sub though it wont disappoint

4 of 7 found this helpful

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Rockingham, NC

Hard to beat

March 17, 2014

This beast will soak up every watt you can throw at it. Don't bother putting it in a ported enclosure unless you are willing to sacrifice SQ for a slight SPL gain. It won't gain enough over a sealed enclosure to justify the larger enclosure/loss of durability,( PROVIDED YOU ARE THROWING THE RECOMMENDED RMS WATTAGE TO IT). If you only have a small amp, you gotta do what you gotta do I guess......... The t/s specs on it suggest a sealed enclosure, and after trying it out in a few different sealed and ported enclosures, I have to agree with the T/S. 1.4 sealed and this thing really pounds with 1500 watts going into it. Good frequency response from 150 down to about 40. ..... I can't think of any other woofer remotely in this price range that will outperform this one.

4 of 8 found this helpful

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Sharon, MA

Amazing subwoofer!!

December 15, 2013

Paired with the matching hifonics amp the sound is so clear and responsive, it is biased a tad more towards low low frequencies so you need some quality speakers along side it, but in a full system it's the perfect addition. I have infinity kappa perfect components in front and rear powered by a Kenwood 4 channel amp with the sound coming from a pioneer premier head unit. Everything sounds balanced and clean once I tuned both amps and set all the crossovers etc. When I had it in a ported box it was louder, but due to space restrictions I swapped to a sealed box, it's not as loud, but it's sharper and much more responsive to more frequencies. If you want it to bang or create a movie theater this is great subwoofer.

4 of 8 found this helpful

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Conway, S.C.

Big Bang for little bucks

September 23, 2013

This sub performs superbly in any type of enclosure, started out with it in a sealed box but now have it in a ported box with a solid 1800 watts pushing it, even though I only have one, it hits harder than two 15s , I highly recommend this sub!!!!

3 of 6 found this helpful

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Marina, CA


January 15, 2013

Pushing this sub with a glx1400.1d in a sealed box and it sounds great. hard hitting and clean. would def recommend! i'm underpowering it a lit'l but will hook up the glx1800.1d on it soon and [maybe go ported]. But all in all.....

Great product from Hifonics.
SonicElectronix is the BEST on the web!!

3 of 6 found this helpful

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August 22, 2012

This sub provides a unique balance between sql and spl. I had an old school mofo 12 that plain hammered, so much so that it over played my mids. This new olm works more refined. Don't get it twisted though, this thing will hammer and hard. It moves so much air when turned up it literlly blows my doors to vibrating on the lock. I am actually afraid my back window is going to break, from the outside u can here rubber separating from the glass and the frame. I have only had it for a few days and have not completly broken it in yet, but so far I really love it!

5 of 10 found this helpful

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Salem, OR

Hifonics Olympus DVC 2ohm

September 17, 2013

I like this sub. I power it with a Hifonics Brutus 1600 and I was under the impression that these two were going to be the perfect match by the fact that they are the same brand and same power rating. However, this is not the case, I have the bassboost turned off on the amp and only have it at 75% power and I can still smell the voicecoil getting too hot on most songs.

I feel like with them being made for each other I should basically be able to push as much as I want to the sub from this amp and not have it be a problem. I don't know if the amp is overpowered or the sub is overrated. Either way this sub will not be cutting it for long term. I am going to have to ditch it and run with an HCCA Orion that can take whatever I throw at it.

As for recommending this sub I would, but I wouldn't partner it with this beastly of an amp. Maybe only shoot 1200 watts at it.

3 of 8 found this helpful

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Evans, GA

Buy These Speakers!!!!

March 7, 2013

I had some power acoustic p3's in my truck before and thought I was doing big thangs... How wrong I was.. I put these hifonics woofers in my avalanche and maannnn.... No further words. These speakers are well worth the money

5 of 12 found this helpful

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Los Banos, CA

First time ordering from Sonic and i'm impressed!

October 28, 2013

I have a complete HiFinics system all around and i always wanted these bad boys. I just need a custom box to house them so i can pound the ground! Thankx again Sonic Electronix God bless.

4 of 12 found this helpful

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Accessory Tools and Products

Accessories added

NVX 20 ft. of True Spec 8 Gauge Speaker Wire

Flexible multi-strand cable bends and twists to meet your installation needs.

Your Price $49.99

25 ft. of Streetwires 12 Gauge Speaker Cable

You'll need speaker wire to hook up that new subwoofer!

Your Price $44.95

Belva 23 ft. of 12 Gauge Speaker Wire

Ultra-flexible PVC blended jacket for easy installation.

Your Price $14.99

40 Square Feet of Sound Dampening Material

Thicker than the competition, complete sound damping kit for entire vehicle! Use for trunk, doors, roof and floor.

Your Price $119.99

Dynamat Sound Dampening Bulk Kit

Did you know sound dampening will reduce those annoying rattles and even increase your SPL?

Your Price $159.99

Stinger Sound Dampening Bulk Kit

Stinger's Roadkill sound dampening series is sure to kill unwanted road noise and rattles! Enough sound dampening for the whole car!

Your Price $99.99

40" x 15 Ft Piece of Premium Un-Backed Automotive Trim Carpet

Durable design for long life-span, available in many colors and shades.

Your Price $39.99

Gold Plated Dual Terminal Banana Plug Connector

Enables an expandable, secure connection accepting up to 8 gauge wire.

Your Price $1.99

2" Universal, Professional Heavy Duty Roller for Sound Damping/Dampening

Universal rubber roller to make it easy to install sound dampening.

Your Price $7.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

Xscorpion 9-Piece Nylon Plastic Pry and Chisel Tool Set

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $14.99

1mm All Purpose Solder

Solder is all purpose for use on most projects where solder is needed.

Your Price $8.99

12" Protective Waffle Subwoofer Grille

Keep your subwoofer looking amazing while keeping it safe.

Your Price $4.99

Scosche SPL Meter

Monitor the noise level of your new car audio system with this SPL meter measuring from 60-135 dB.

Your Price $21.99

1 Hifonics OLM1600D2 Subwoofer

Mono Amp

Mono Amp - Option 1

2 Channel Amp - Bridged

2 Hifonics OLM1600D2 Subwoofers

Mono Amp

2 Channel Amp

4 Channel Amp - Bridged

3 Hifonics OLM1600D2 Subwoofers

Mono Amp

Mono Amp - Option 1

4 Channel Amp

4 Hifonics OLM1600D2 Subwoofers

2 Channel Amp

4 Channel Amp

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Product Summary


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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Hifonics OLM1600D2

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