Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Boston Acoustics SPS-G5104 Soft Part System
10" single 4-ohm replacement kit for G5 subwoofer
Our take on the Boston Acoustics SPS-G5104 Soft Part Systemby Crutchfield's Ken Nail
If you're a serious bass competitor or if you like pushing your system to the limit, you've probably suffered through a blown subwoofer or two. Boston has developed an ingenious way to minimize your pain. Their Soft Part System replacement cone lets you repair your Boston G510-4 subwoofer on the spot in a matter of minutes.
The SPS-G5104 is a complete one-piece replacement cone/voice coil for the G5 10" sub. Just unscrew the damaged cone from the basket, and screw the new replacement cone into place. You can even use the replacement cone to convert your dual voice coil G5 sub into a single voice coil model.
- replacement woofer and voice coil assembly for G510 subwoofers
- 4-ohm impedance
- instructions included
- warranty: 2 years
- Our 60-day money-back guarantee
What's in the Box:
- Replacement woofer cone/voice coil assembly for Boston Acoustics G510 woofers
- 2.5mm Hex key
- 8 Hex-head M4 top screws (thin head)
- 8 Hex-head M4 bottom screws (thick head)
- SPS Removal/Installation Instructions
- G5/GTR Manual
- Warranty sheet
- Product Registration Card
Product Overview: The Boston Acoustic SPS-G5104 is a replacement woofer cone/single voice coil assembly, designed exclusively for use with the Boston Acoustic G5-series 10" subwoofers (models G510-4 and G510-44). It cannot be used as a stand alone driver.
SPS (Soft Part System): The G5-series woofers have a removable assembly called the Soft Part System (SPS).The SPS assembly includes the woofer cone and dustcap, foam surround, spider with integrated tinsel leads, voice coil, and the speaker terminals. This interchangeable assembly allows you to repair a blown woofer, or change from a dual voice coil to a single voice coil configuration in the field. The assembly attaches to the woofer frame with 16 screws--8 on the top and 8 on the bottom. Screws and hex key are included.
Materials: The SPS assembly consists of a co-polymer woofer cone with a raised polypropylene dustcap and a large foam surround. It has a 2-3/4", 4-layer voice coil.
SureSet: The speaker terminals are equipped with two 7.5-amp ATC fuses providing voice coil protection under transient conditions such as accidental momentary overdrive. Use of the standard automotive style fuses allows you to quickly service the woofer in case a fuse is blown during usage. Note: The fuses do not protect against voice-coil failure resulting from long term high power abuse.
Terminals: The assembly is equipped rugged spring post terminals that accept up to 8-gauge bare wire or pin connectors.
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 verify what’s in the box, 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.