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RetroSound SUB-8100

Compact powered subwoofer: 100 watts and an 8" sub

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Item# 068SUB8100 offer details

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Retrosound

Who needs a powered subwoofer?

To produce bass, you need a sub, an enclosure, and an amplifier, and it can be little tricky to match them all up. A powered sub eliminates all the hassle, as the manufacturer designs the enclosure to house the sub and amp together. This all-in-one solution is especially useful in smaller vehicles, where there's no room to mount a separate amp, or in any vehicle where you need every bit of cargo space. Powered subs range from small, flat boxes that fit under your seat to larger boxes that go in your trunk.

Our take on the RetroSound SUB-8100

by John Pollard

Tough sub for tight spaces

RetroSound designed their low-profile SUB-8100 powered sub to give you solid bass in regular cab trucks, classic cars, and other vehicles that don't have much space to spare. The enclosure comes in at just 3" thick, so it'll fit behind or under a seat with room to spare. A 100-watt RMS amplifier powers the 8" sub, and they're perfectly matched to give your ride the bass it's been missing.

Cast aluminum enclosure

The rugged aluminum enclosure protects the sub and amp while dissipating heat caused by heavy, extended listening. You can use the variable low-pass crossover and phase switch to maximize the bass in your particular vehicle. Retrosound includes mounting hardware, so all you'll need is an amp wiring kit to get great bass in your vehicle.

Highlights:

  • compact powered subwoofer
  • 8" woofer
  • built-in 100 watts RMS amplifier
  • frequency response: 35-100 Hz
  • variable low-pass crossover (50-100 Hz)
  • adjustable phase control (0 or 180 degrees)
  • preamp- and speaker-level inputs
  • dimensions: 10"W x 3"H x 13-7/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
Shop all Retrosound Powered Subwoofers
     

    Hands-on research from the Crutchfield Labs (what are the Labs?)

    Features and Specs

    Features and Specs
    General
    Enclosure Type
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    Sealed
    Finish Material
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    Aluminum
    Grille
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    Metal
    Connector Type
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    RCA/Molex
    Bi-amp Inputs
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    No
    Woofer Size (inches)
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    8
    Woofer Material
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    Not given
    Passive Radiator
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    ---
    Width
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    10"
    Height
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    3"
    Depth
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    13-7/8"
    Second Depth
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    N/A
    Parts Warranty
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    1 Year
    Labor Warranty
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    1 Year
    Specifications
    Frequency Response
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    35-100
    Amplifier Power (RMS)
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    100 watts
    Maximum Wattage
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    200 watts
    Sensitivity
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    N/A
    Impedance
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    N/A
    Second Voice Coil Impedance
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    N/A
    Crossover Point
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    50-100 Hz

    Product Research

    Product Research
    What's in the box?

    Download owner's manual

    • Amplified subwoofer
    • 8" Wiring harness (with in-line fuse holder on power wire)
    • One 10 amp glass fuse (installed)
    • 4 Metal mounting brackets
    • Four M5x12mm Machine screws
    • Four 5/8" Sheet metal screws
    • 4 Flat washers
    • 4 Split lock washers
    • Owner's manual

    Our Product Research Team

    At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

    Features

    Overview: The SUB-8100 amplified subwoofer features a 100-watt RMS (200-watts max) amp and an 8" sub housed in a rugged, compact enclosure designed to fit in tight spaces.

    Mounting: The subwoofer, with its 3" height, can be mounted under a seat in the passenger compartment of many vehicles.

    Controls

    • Gain: rotary dial to set the amplifier gain control; 100mV-6V
    • Phase: two position switch to set the subwoofer phase; 0° or 180°
    • Frequency: rotary dial to control the low pass crossover frequency; 50 to 100 Hz, 12 dB/octave

    Connections

    • Harness: the included harness has wires for power, ground, remote turn-on, and speaker level input
    • Line Input: stereo RCA jacks

    Specifications:

    • Power: 100 watts RMS/200 watts max (@14.4 volts)
    • Signal to Noise Ratio: 100 dB
    • Input Sensitivity: 100mV-6V
    • Frequency Response: 35-100 Hz
    • THD: 0.08%
     

    Product Reviews

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    Reviews for the RetroSound SUB-8100

    Average Customer Review:

    5 people say:

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    Showing: 1-5 of 5
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    4 out of 5

    Better Sound For a Superduty

    Written By WillG, Darien, WI on Thursday, January 10, 2013
    Crutchfield Customer Review (What's this?)
     
    I just installed this in my 2002 F-350 regular cab truck. It fits great behind the seat with some modification to the plastic storage tray back there. Tim is right, it is built very solid and the adjustment knobs are high quality the wire harness is nice too, but the fuse holder is a cheap piece of crap, better to cut it out and install you own fuse. I put an in line blade style fuse right at the battery which worked great and will be easier to change if I ever have to. The sound quality is great, I have an Eclipse stereo with stock speakers so I'm not exactly going all out here, but this little sub added a fullness to my music that was missing before plus now I can turn the bass setting on the stereo down to get more volume before it starts distorting my factory speakers. I don't want to put a complete system in this truck because it is completely unmolested and there is no room, so this was a good way to get better sound. If you are looking for a license plate rattling thump thump, this is obviously not the answer.
    Pros:
    Heavy duty, compact, easy installation, reasonable price, great sound.
    Cons:
    Made in China
    4 out of 4 people found this helpful
    Was this review helpful?    Yes | No
     
    4 out of 5

    Very Pleaseed

    Written By Tim, Virginia Beach, VA on Monday, August 27, 2012
    Crutchfield Customer Review (What's this?)
     
    Very pleased with the RetroSound powered sub. The unit is solid metal, built like a rock. Very easy to install under my front passenger seat.
    Pros:
    Sounds great. Compact. Easy to install
    Cons:
    None
    3 out of 3 people found this helpful
    Was this review helpful?    Yes | No
     
    2 out of 5

    Skip

    Written By Digger, Phoenix AZ on Thursday, July 26, 2012
    Crutchfield Customer Review (What's this?)
     
    This is a Skipper, buy the sound ordinance this will not hold up against the smallest of amps, My Miata headrest speakers would over power two of these subs.
    Pros:
    Thin, Stong well built case
    Cons:
    No Power
    6 out of 8 people found this helpful
    Was this review helpful?    Yes | No
     
    5 out of 5

    Big sound in a little package.

    Written By Jojo, Oscoda,MI on Sunday, July 08, 2012
    Crutchfield Customer Review (What's this?)
     
    All I can say is wow,what a nice sub for small car or truck.I just put it in a 1997 Nissan std cab pickup never would have thought I could fit a sub behinde the seat(most people would have put a box behide the seat and moved the seat up to make room for the sub,not me Im 6'1" and the seat in any position but all the way back is not a option)installation was simple and fast,and they matched up well with the polk 651 6.5" I installed the day before(no amp on the polk's)I was happy with just the polks but I bought the sub the same time but wanted to hear it with and without the sub. I figured if the sub gave me even a little bass I would be vary happy,well it gave me a lot of bass,couldn't be happier.
    Pros:
    vary small with big bass
    Cons:
    none
    4 out of 4 people found this helpful
    Was this review helpful?    Yes | No
     
    3 out of 5

    RetroSound SUB-8100

    Written By KeithK, Tampa, FL on Thursday, May 17, 2012
    Crutchfield Customer Review (What's this?)
     
    This is a nifty little sub and easy to install, but it just didn't move enough air for me. I'm not even really a huge bass advocate, but I needed more than what this was able to provide.
    12 out of 13 people found this helpful
    Was this review helpful?    Yes | No
     
    1-5 of 5

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    SquareTrade Warranty 3 Year Warranty
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    Your item's repaired or the full item price returned withing 5 days

    Runs concurrent with manufacturer's warranty

    Rated 5-stars by consumers

    For a more in-depth review and enhanced detailed information on the RetroSound SUB-8100, please visit the Crutchfield website product page (/S-xQk4qhIIvLP/p_068SUB8100/RetroSound-SUB-8100.html ).

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    Protect your gear with an extended warranty

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