Ground Zero GZCK 250XSPL 10" Midrange Speakers
Ground Zero GZCK 250XSPL 10" Midrange Speakers
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Ground Zero GZCK 250XSPL 10" SPL Midwoofer (Single)
The Ground Zero GZCK 250XSPL is a 10" SPL midwoofer built for high-output midrange and mid-bass. It handles 200 watts RMS and 400 watts max, runs at 4Ω, and is rated at 93dB efficiency. This listing is for a single speaker.
10" SPL Midwoofer for Harley Audio
A high-output midwoofer with a 2" copper-clad aluminum voice coil, built for serious output.
- 200 watts RMS / 400 watts max
- 93dB efficiency, 4Ω
- 40Hz–6kHz frequency response
Key Product Details
| Product | Ground Zero GZCK 250XSPL 10" SPL Midwoofer |
| Impedance | 4Ω |
| Power Handling | 200W RMS / 400W max |
| Mounting | 9.25" / 235mm cutout, 4.33" / 110mm depth |
| Sold As | Single (order two for a pair) |
Always verify impedance, speaker location, mounting depth, amplifier power, wiring, crossover setup, and final fitment before ordering for your Harley-Davidson audio build.
A High-Output 10" Midwoofer
The GZCK 250XSPL is a midwoofer only, with no built-in tweeter. It uses a fiber-reinforced paper cone, a long-stroke foam surround and a resonance-free steel basket.
- 10" (250mm) SPL midwoofer.
- 2" (50mm) copper-clad aluminum voice coil.
- Soldering terminal.
Specifications
| Size | 10" / 250mm SPL midwoofer |
| Impedance | 4Ω |
| Power Handling | 200 watts RMS / 400 watts max |
| Efficiency | 93dB |
| Frequency Response | 40Hz–6kHz |
| Voice Coil | 2" / 50mm copper-clad aluminum |
| Resonance Frequency (Fs) | 44Hz |
| Mounting Cutout | 9.25" / 235mm |
| Mounting Depth | 4.33" / 110mm |
Fitment and System Planning
Confirm speaker depth, cutout, enclosure or pod space, wiring path, impedance and amplifier compatibility before installation.
Because the GZCK 250XSPL is a midwoofer with no tweeter, plan a separate high-frequency driver and a crossover or DSP setup. Confirm your year and model with Garage Bagger Stereo before ordering.
Mounting rings: 10-inch speakers need mounting (adapter) rings. Browse the Nagy's Customs adapter rings collection, including the Nagy's Customs Monster Mega 10″ 98-23 HD Subwoofer or Midbass Adapter Rings (Pair), and confirm the right ring for your year and model with Garage Bagger Stereo before ordering.
What to Pair With the GZCK 250XSPL
These parts help you power, wire and tune the speaker correctly.
Motorcycle Amplifiers
Power the speaker with an amplifier built for Harley-Davidson audio.
Motorcycle DSP
Set crossovers and tune the system with a digital sound processor.
Speaker Installation Parts
Adapters, rings, grilles and mounting parts for speaker installs.
Ground Zero Motorcycle Audio
More Ground Zero speakers and subwoofers.
Related Ground Zero & Motorcycle Audio Paths
Build the system around the correct speaker, amplifier, DSP, wiring, and installation parts. These related collections help match the GZCK 250XSPL with the right Harley audio upgrade path.
Best Use for the GZCK 250XSPL
Choose it for a high-output midrange or mid-bass position in a system built around separate drivers and DSP tuning.
Amplified System Recommended
This midwoofer is intended for serious motorcycle audio systems. For best results, match the GZCK 250XSPL with proper amplifier power, correct impedance, clean wiring, and a real tuning plan.
Ground Zero GZCK 250XSPL FAQ
What impedance is the GZCK 250XSPL?
It is a 4Ω speaker. Match it to an amplifier and wiring plan that supports 4Ω.
How much power can it handle?
Ground Zero rates it at 200 watts RMS and 400 watts max.
What are the mounting dimensions?
Ground Zero lists a 9.25 inch (235mm) mounting cutout and a 4.33 inch (110mm) mounting depth. Verify the available depth and cutout in your location before ordering.
Does the GZCK 250XSPL include a tweeter?
No. It is a midwoofer only, so plan a separate high-frequency driver and a crossover or DSP setup.
Is the GZCK 250XSPL sold as a pair?
No. This listing is for a single speaker, so order two if you need a pair.
Does Garage Bagger Stereo install the GZCK 250XSPL?
Garage Bagger Stereo offers motorcycle audio installation at our Taylors, SC shop and can help you plan a DIY install. Start a Build Consultation or call 864-334-6131 to check scheduling.
Need Help Choosing?
Tell us your bike, model year and what you want to add, and we will confirm fitment and the right parts before you order.