Hertz CS 250 S4 — Compact 10" Subwoofer for Motorcycle Bass Systems
The Hertz CS 250 S4 is a compact, efficient 10″ subwoofer designed to deliver clean, controlled low-end support in small motorcycle enclosures. With a shallow mounting depth and a 4-ohm single voice coil configuration, it’s an ideal match for Tour-Pak and saddlebag subwoofer systems where space is limited but real bass response is still a priority.
Key Features
- 300 W RMS / 600 W Peak power handling for strong, reliable bass performance.
- Compact 115 mm mounting depth suited to motorcycle-specific sealed enclosures.
- 4-ohm single voice coil for simple amp matching and wiring.
- Rigid pressed-pulp cone with polymer-injected surround for durability.
- Optimised motor design for accurate bass even in small-volume enclosures.
Why It Works on Harleys
- Efficient performance in compact sealed boxes used in Tour-Paks or bags.
- Smooth low-end reinforcement without requiring high-output electrical upgrades.
- Ideal for 300–400 W mono amps commonly used in motorcycle sub systems.
- Durable construction suited to high-vibration touring environments.
Recommended System Use
- Tour-Pak subwoofer systems using 10" sealed enclosures.
- Saddlebag-mounted sub boxes with limited internal volume.
- Balanced audio upgrades seeking low-end support without extreme SPL.
- Mid-level amplifier pairing: 300–400 W RMS recommended.
Fitment
- Suitable for custom Harley-Davidson Touring enclosures.
- Compatible with motorcycle-specific sealed boxes from various manufacturers.
- Works with Tour-Pak, side-cover, and saddlebag subwoofer layouts.
Specifications
| Size | 10" |
| Voice Coil | Single 4 Ω |
| RMS Power | 300 W |
| Peak Power | 600 W |
| Frequency Response | 32 – 400 Hz |
| Sensitivity | 89.5 dB |
| Mounting Depth | 115 mm |
| Cone Material | Press-paper with polymer treatment |
| Recommended Enclosure | Sealed |
Need Help Choosing a Subwoofer?
We can help you match the right enclosure, amplifier, and charging setup to get clean, usable bass from your Harley without sacrificing storage or reliability.
Shipping
Australia Shipping:
- Under $500 → $19.95
- $500–$2,500 → $14.95
- Over $2,500 → FREE
- Bulky items → +$24.95 surcharge (waived over $2,500)
Fast dispatch from Brisbane. Same-day shipping on in-stock orders before 1pm AEST.
Return policy
Change-of-mind returns: We accept returns within 7 days of delivery on unused, unopened products in original sealed packaging. Restocking fees apply (20–30%). Return shipping is the customer’s responsibility.
No returns on opened audio gear, installed items, custom orders, or special-order products. Please check fitment carefully before installing.
Faulty or incorrect items: If you experience an issue, contact us with photos/video and your order number. We’ll assess the claim and arrange repair, replacement, or refund for verified faults under the Australian Consumer Law.
Fitment assistance: If you’re unsure about compatibility, reach out before ordering—we’re happy to help.