
Couldn't Load Pickup availability
The Phoenix Gold ZXT12D2 is a 12 inch slimline subwoofer from the ZX Series, featuring dual 2 ohm voice coils, a 105mm mounting depth, and a fibreglass cone with butyl rubber surround — built for strong bass output in compact enclosures.
This listing is the 12 inch. The ZX Series slimline subwoofer is also available in 10 inch (ZXT10D4).
Key specifications
- Size: 12 inch
- Impedance: dual 2 ohm (2 x 2 ohm)
- Sensitivity: 82.78dB (1W/1m)
- Fs: 28.2Hz
- Qts: 0.786
- Mounting depth: 105mm
- Cone: fibreglass with butyl rubber surround
- Voice coils: dual OFC
ZXT12D2 12″ Slim Subwoofer
The ZXT12D2 is a slimline subwoofer designed to deliver strong bass from compact enclosures where space is limited. Its fibreglass cone is lightweight and rigid, paired with a heavy butyl rubber surround for warmer, deeper bass. A polycotton spider and OFC dual voice coils refine the soft components to maximise output in minimal space.
The ZXT12D2 pairs with the ZXT12PR passive radiator to create powerful, great-sounding enclosures — a strong option for anyone wanting serious bass performance without sacrificing boot space.
Key features
- Stiff, lightweight fibreglass cone
- Butyl rubber surround
- Polycotton spiders
- OFC voice coil
- Ferrite magnet construction
- Inverted PP dustcap
- Dual voice coils
- Bumped T-Yoke
Explore the full range in Phoenix Gold Subwoofers.
Specification
| Sensitivity | 82.78dB (1W/1m) |
|---|---|
| Fs | 28.2Hz |
| Qts | 0.786 |
| Impedance | 2 x 2Ω |
| Mounting Depth | 105mm |
More specs
| |
What's Included
- ZXT12D2 12″ Slim Subwoofer
Phoenix Gold
About the Phoenix Gold ZXT12D2
From our tech experts at CEN
A Phoenix Gold 12 inch subwoofer, handling 400w RMS.
Who it suits
Drivers building a system where the bass does real work.
Our tech experts advise
Enclosure volume and tuning decide most of what you hear. We build enclosures to suit both driver and vehicle at our Beeston workshop. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full Phoenix Gold range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Phoenix Gold
Recommended For You
Discover more top-rated gear, handpicked to go with what you're viewing

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.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
Frequently Asked Questions
Q: Do I need an amplifier for this subwoofer?
A: Yes, unless it is an active (powered) subwoofer with a built-in amplifier. Passive subwoofers need an external amplifier matched to the RMS power and impedance shown in the Specification tab.
Q: What size enclosure does this subwoofer need?
A: The recommended enclosure volume is listed in the Specification tab where the manufacturer provides it. As a rule, sealed enclosures give tighter, more accurate bass while ported enclosures deliver more output. Contact CEN if you would like a recommendation for your build.
Q: What does RMS power mean?
A: RMS is the continuous power a subwoofer can handle, and it is the number that matters when matching an amplifier. Peak or max figures describe short bursts only. Match your amplifier output to the RMS rating in the Specification tab.
Q: Sealed or ported enclosure - which should I choose?
A: Sealed boxes are compact and produce tight, controlled bass suited to sound quality builds. Ported boxes are larger and produce more output at low frequencies, suited to those who want maximum impact. Either works well when built to the recommended volume.
Q: Can CEN build or supply an enclosure and fit everything?
A: Yes. CEN supplies enclosures and offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to discuss your build.
Q: What impedance is the Phoenix Gold ZXT12D2?
A: The ZXT12D2 has dual 2 ohm voice coils (2 x 2 ohm). Choose an amplifier that is stable at the impedance you wire it to.
Q: How shallow is the ZXT12D2?
A: It needs 105mm mounting depth, making it suitable for slim enclosures.
Q: What is the ZXT12D2 cone made from?
A: It uses a stiff, lightweight fibreglass cone with a butyl rubber surround, polycotton spiders and OFC voice coils.
Not Sure Where to Start?
Straightforward advice and the latest news from our Nottingham team.
All Guides and News →
Car Audio
Pioneer Perfect Fit 9-Inch Stereos: Fitting Kits and Every Car They Fit (2026)
Read the guide →
Car Audio
BMW Speaker Upgrades Explained: Where to Start and What Fits
Read the guide →
Car Audio
Christmas Gift Guide 2026: Car Audio, Dash Cams and Outdoor Tech
Read the guide →
Car Audio
Upgrading Car Audio Without Replacing the Factory Stereo
Read the guide →
Car Audio
Amplifier Wiring Kits Explained: Gauge, Fuses and Earths
Read the guide →
Car Audio
New at CEN: Option Audio Drive-10Flat — Golf Mk8 Bass, Zero Boot Space Lost
Read more →






























