Phoenix Gold ZDSB100CS ZD Series 4 Inch 2 Way BMW Speaker Upgrade Kit 60w RMS
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The Phoenix Gold ZDSB100CS is a 4 inch (100mm) 2-way plug-and-play speaker upgrade kit for a wide range of BMW and Mini models, rated at 60W RMS (120W max). It is part of the Phoenix Gold ZD Series and connects directly to the original wiring with no drilling or cutting required.
Pair it with the ZDSB200S 8 inch BMW subwoofer kit for a full upgrade, or choose a complete 3-way kit: ZDSKB1 or ZDSKB1S.
Key specifications
- Size: 4 inch (100mm) 2-way
- Power handling: 60W RMS / 120W max
- Frequency response: 100Hz – 20kHz
- Impedance: 4 ohm
- Voice coil: 1 inch (25mm)
- Crossover: 12dB
- Tweeter material: silk
- Woofer material: sandwich composite cone
- Magnets: neodymium (Neo/Neo)
ZDSB100CS BMW Speaker Upgrade Kit
The ZDSB100CS is a 4 inch (100mm) 2-way speaker system designed to replace OEM speakers in a wide range of BMW models. It uses the same mounting footprint and plug-and-play connector as the original speakers, so no holes need to be drilled and no wires need to be cut.
Power handling is 60W RMS and 120W max, with a frequency response of 100Hz – 20kHz covering both deep lows and crisp highs. The 4Ω impedance and 1 inch (25mm) voice coil ensure compatibility with the vehicle's existing audio system, while the 12dB crossover keeps frequencies cleanly separated.
The silk tweeters deliver smooth, detailed high-frequency reproduction. The woofer uses a sandwich composite cone for balanced mid-range performance. Neo/Neo neodymium magnets keep the overall design compact and lightweight without compromising output.
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Specification
| Speaker Size | 4″ (100mm) 2-Way Speaker System |
|---|---|
| Power Handling | (RMS) 60W |
| Power Handling | (MAX) 120W |
| Frequency Response | 100Hz – 20kHz |
| Impedance | 4Ω |
| Voice Coil | 1″ (25mm) |
| Crossover | 12dB |
| Tweeter Material | Silk |
| Woofer Material | Sandwich Composite Cone |
| Magnet | Neo/Neo |
| Connections | Plug and Play |
More specs
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What's Included
- ZDSB100CS
Phoenix Gold
About the Phoenix Gold ZDSB100CS
From our tech experts at CEN
The Phoenix Gold ZDSB100CS is a 4 inch (100mm) 2-way speaker upgrade kit from the ZD Series, designed as a direct plug-and-play replacement for OEM speakers in a wide range of BMW and Mini models. It handles 60W RMS (120W max) across a 100Hz–20kHz frequency response. Silk tweeters and a sandwich composite cone woofer connect to the original wiring with no drilling or cutting required.
Who it suits
BMW and Mini owners wanting a clear improvement over factory audio without modifying their car's wiring. The 4Ω impedance is compatible with stock head units, so no additional amplifier is needed. For a complete system, the Phoenix Gold ZD Series also includes matching subwoofer kits.
Our tech experts advise
Check your exact BMW model, body style and build year against the compatibility list before ordering, as fitment varies across generations. The 4Ω impedance suits a standard factory head unit, so no amplifier upgrade is required for basic use. Fitting door speakers correctly, including tweeter placement, benefits from experience. Installation is priced per vehicle — see our Nottingham installation page for details.
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
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Bring it to our Beeston workshop and we do the rest.
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Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: Which BMW models does the ZDSB100CS fit?
A: It fits the door locations (and rear side panels on some models) of many BMW 1 to 7 Series, X1 to X4, Z4 and i models plus Mini Clubman and Cooper. Check the Specification tab for the full vehicle application list, or contact CEN with your registration and we will confirm fitment.
Q: Do I need to cut any wires to fit the ZDSB100CS?
A: No. It uses the same fitment and a plug and play connector that matches the vehicle's original wiring, so no drilling or cutting is needed.
Q: Can I add a subwoofer upgrade to the ZDSB100CS?
A: Yes. It can be paired with the Phoenix Gold ZDSB200S 8 inch under-seat subwoofer kit for a complete upgrade.
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