UK car audio comparison

Best Phoenix Gold Car Subwoofers
in 2026.

A practical comparison of car subwoofers using enclosure type, power, dimensions and the installation space they need.

Prices and stock should be checked on the retailer page before purchase.

Our approach. We compare the specifications shown on the retailer product pages and explain who each model suits. This is not a hands-on test.

Our pick

Phoenix Gold Z12D4 - 12" 1600 Watt Dual 4 Ohm Subwoofer

A 12-inch active subwoofer choice for adding more weight to the system.

Check price

Full specifications

Our picks compared

This table includes every verified specification available for the products in this roundup. Check the retailer page for the latest price, stock and fitment details.

Product	Price	Availability	Brand	Model	Product Type	Subwoofer Design	Size	Listed Power	Rms Power	Full specifications
Phoenix Gold Z12D4 - 12" 1600 Watt Dual 4 Ohm Subwoofer	£93.60	In stock	Phoenix Gold	Z12D4	Subwoofer	Active	12 inch	1600W	Not listed	All listed fields are shown
Phoenix Gold RX2 12D 12" Dual 4-Ohm Subwoofer	£144.99	In stock	Phoenix Gold	RX2 12D	Subwoofer	Not listed	12 inch	200W	200W Peak Power: 400W Impedance: Dual 4-ohm voice coils Frequency Response: 25Hz – 300Hz Sensitivity	Mounting Depth: 5
Phoenix Gold ZX18PDF 8" 500W MAX Slim Passive Subwoofer Box	£159.99	In stock	Phoenix Gold	ZX18PDF	Car Subwoofers	Passive	8 inch	500W	250W	Impedance: Optimised for efficient power delivery and compatibility with various amplifiers Size Detail: 8 inch
Phoenix Gold ZB8P 8"Active Subwoofer 200W Underseat Subwoofer	£169.99	In stock	Phoenix Gold	ZB8P	Underseat Car Subwoofers	Active	8 inch	200W	200W	All listed fields are shown
Phoenix Gold ZX18PBS Compact 8" Subwoofer	£169.99	In stock	Phoenix Gold	ZX18PBS	Subwoofer	Active	8 inch	1800W	Not listed	All listed fields are shown
Phoenix Gold ZXT10D4 700W Max Power 10″ Slim Subwoofer	£169.99	In stock	Phoenix Gold	ZXT10D4	Car Subwoofers	Passive	Not listed	700W	Not listed	Impedance: 2×4 Ω Frequency Response: 30Hz – 500Hz Power handling (RMS): 350W Power handling (MAX): 700W Sensiti Mounting Depth: 95 mm Mounting Diameter: 232 mm Outer Diameter: 264 mm Speaker Grills: No Unit: Piece Weight: 4 Speaker Design: Component

Product notes

What each pick is best at

Best overall bass upgrade

Phoenix Gold Z12D4 - 12" 1600 Watt Dual 4 Ohm Subwoofer

A 12-inch active subwoofer choice for adding more weight to the system.

What we like

Lowest listed price in this comparison at £93.60, £51.39 below Phoenix Gold RX2 12D.
The only pick here listing 1600W power, giving it a clear difference from the other 5 options.
Its active design includes amplification in the product, unlike passive options that need a separate amp.

What we don't like

Unlike some alternatives, the listing does not show a comparable design figure, so matching it to the rest of the system takes more checking.
The enclosure and underseat or boot dimensions still need checking, even where the product is described as compact.

Price	£93.60
Availability	In stock
Listed Power	1600W
Model	Z12D4
Size	12 inch
Subwoofer Design	Active
Brand	Phoenix Gold
Product Type	Subwoofer

Check CarAudioCentre.co.uk

Best for compact installations

Phoenix Gold RX2 12D 12" Dual 4-Ohm Subwoofer

A 12-inch bass subwoofer choice for adding more weight to the system.

What we like

At £144.99, it costs £51.39 more than Phoenix Gold Z12D4, so the extra spend is tied to the specification and fitment choice.
Its listed 12-inch size matches 1 other pick, making like-for-like installation planning easier.
The product type gives a clear starting point for deciding between a compact bass upgrade and a separate amplifier setup.

What we don't like

It is £51.39 above the cheapest pick without a clearly unique listed specification to explain the difference.
The enclosure and underseat or boot dimensions still need checking, even where the product is described as compact.

Price	£144.99
Availability	In stock
Listed Power	200W
Model	RX2 12D
Rms Power	200W Peak Power: 400W Impedance: Dual 4-ohm voice coils Frequency Response: 25Hz – 300Hz Sensitivity
Size	12 inch
Brand	Phoenix Gold
Mounting Depth	5
Product Type	Subwoofer

Check CarAudioCentre.co.uk

Best for boot-based systems

Phoenix Gold ZX18PDF 8" 500W MAX Slim Passive Subwoofer Box

A 8-inch passive subwoofer choice for adding more weight to the system.

What we like

At £159.99, it costs £66.39 more than Phoenix Gold Z12D4, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 500W power, giving it a clear difference from the other 5 options.
The passive design leaves amplifier choice open for buyers already planning a separate bass channel.

What we don't like

It is £66.39 above the cheapest pick, so the higher price depends on whether the distinct 500W power suits the installation.
A separate amplifier and suitable wiring are required, unlike the active alternatives.

Price	£159.99
Availability	In stock
Listed Power	500W
Model	ZX18PDF
Rms Power	250W
Size	8 inch
Subwoofer Design	Passive
Brand	Phoenix Gold
Impedance	Optimised for efficient power delivery and compatibility with various amplifiers
Product Type	Car Subwoofers
Size Detail	8 inch

Check CarAudioCentre.co.uk

Best for factory stereos

Phoenix Gold ZB8P 8"Active Subwoofer 200W Underseat Subwoofer

A 8-inch active subwoofer choice for adding more weight to the system.

What we like

At £169.99, it costs £76.39 more than Phoenix Gold Z12D4, so the extra spend is tied to the specification and fitment choice.
Its listed Active design matches 2 other picks, making like-for-like installation planning easier.
Its active design includes amplification in the product, unlike passive options that need a separate amp.

What we don't like

It is £76.39 above the cheapest pick without a clearly unique listed specification to explain the difference.
The enclosure and underseat or boot dimensions still need checking, even where the product is described as compact.

Price	£169.99
Availability	In stock
Listed Power	200W
Model	ZB8P
Rms Power	200W
Size	8 inch
Subwoofer Design	Active
Brand	Phoenix Gold
Product Type	Underseat Car Subwoofers

Check CarAudioCentre.co.uk

Best for stronger low end

Phoenix Gold ZX18PBS Compact 8" Subwoofer

A 8-inch active subwoofer choice for adding more weight to the system.

What we like

At £169.99, it costs £76.39 more than Phoenix Gold Z12D4, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 1800W power, giving it a clear difference from the other 5 options.
Its active design includes amplification in the product, unlike passive options that need a separate amp.

What we don't like

It is £76.39 above the cheapest pick, so the higher price depends on whether the distinct 1800W power suits the installation.
The enclosure and underseat or boot dimensions still need checking, even where the product is described as compact.

Price	£169.99
Availability	In stock
Listed Power	1800W
Model	ZX18PBS
Size	8 inch
Subwoofer Design	Active
Brand	Phoenix Gold
Product Type	Subwoofer

Check CarAudioCentre.co.uk

Best for flexible installation

Phoenix Gold ZXT10D4 700W Max Power 10″ Slim Subwoofer

A passive subwoofer choice for adding more weight to the system.

What we like

At £169.99, it costs £76.39 more than Phoenix Gold Z12D4, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 700W power, giving it a clear difference from the other 5 options.
The passive design leaves amplifier choice open for buyers already planning a separate bass channel.

What we don't like

It is £76.39 above the cheapest pick, so the higher price depends on whether the distinct 700W power suits the installation.
A separate amplifier and suitable wiring are required, unlike the active alternatives.

Price	£169.99
Availability	In stock
Listed Power	700W
Model	ZXT10D4
Speaker Design	Component
Subwoofer Design	Passive
Brand	Phoenix Gold
Impedance	2×4 Ω Frequency Response: 30Hz – 500Hz Power handling (RMS): 350W Power handling (MAX): 700W Sensiti
Mounting Depth	95 mm Mounting Diameter: 232 mm Outer Diameter: 264 mm Speaker Grills: No Unit: Piece Weight: 4
Product Type	Car Subwoofers

Check CarAudioCentre.co.uk

Buying guide

What to check before ordering

Start with the space available, then compare RMS power, enclosure type and input options. A factory stereo may need high-level inputs or a line-out converter, while a passive subwoofer needs a separate amplifier.

Use the model number as the final reference. Retailer images and prices can change, and vehicle fitment should be confirmed for the exact make, model and year.

Best Phoenix Gold Car Subwoofersin 2026.

Phoenix Gold Z12D4 - 12" 1600 Watt Dual 4 Ohm Subwoofer

Our picks compared

What each pick is best at

Phoenix Gold Z12D4 - 12" 1600 Watt Dual 4 Ohm Subwoofer

What we like

What we don't like

Phoenix Gold RX2 12D 12" Dual 4-Ohm Subwoofer

What we like

What we don't like

Phoenix Gold ZX18PDF 8" 500W MAX Slim Passive Subwoofer Box

What we like

What we don't like

Phoenix Gold ZB8P 8"Active Subwoofer 200W Underseat Subwoofer

What we like

What we don't like

Phoenix Gold ZX18PBS Compact 8" Subwoofer

What we like

What we don't like

Phoenix Gold ZXT10D4 700W Max Power 10″ Slim Subwoofer

What we like

What we don't like

What to check before ordering

Best Phoenix Gold Car Subwoofers
in 2026.