UK car audio comparison

Best 8-Inch 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

JS8.1 1000W 8" Single Voice Coil 4 Ohm Subwoofer Bass Driver

A 8-inch bass 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	Warranty	Product Type	Subwoofer Design	Size	Listed Power	Rms Power	Feature	Shipping Weight	Full specifications
JS8.1 1000W 8" Single Voice Coil 4 Ohm Subwoofer Bass Driver	£44.50	In stock	Juice	JS8	1 Year Warranty	Subwoofer	Not listed	8 inch	1000W	Not listed	Not listed	5 kg	Bundle Options: Sub Only, Add Compatible Sealed Enclosure, Add Compatible Ported Enclosure, Add Compatible Sealed Enclosure and Amp, Add Compatible Ported Enclosure and Amp
In Phase XT-6 800W Peak Power 6.5" Kevlar Cone 2 Ohm Dual Voice Coil Subwoofer	£79.99	In stock	In Phase	XT-6	2 Year Warranty	Car Subwoofers	Not listed	6.5 inch	800W	Not listed	Dual Voice Coil	5 kg	Power Detail: 2 Ohm
BLAM RELAX BL-R8EL 300w 8inch (210mm) passive car audio subwoofer (2 Ohm)	£89.00	In stock	BLAM	BL-R8EL	Not listed	Car Subwoofers	Passive	8 inch	300W	Not listed	Not listed	Not listed	All listed fields are shown
Pioneer TS-A2000LD2 8" 20cm 4ohm 700w Enlcosure-Type Dual Voice Coil Subwoofer	£97.00	In stock	Pioneer	Not listed	Not listed	Car Subwoofers	Not listed	8 inch	700W	250W	Dual Voice Coil	Not listed	Power Detail: 4 Ohm Speaker Design: Component
Pioneer TS-A2000LB 8" Subwoofer & Enclosure	£98.34	In stock	Pioneer	Not listed	Not listed	Subwoofer	Not listed	8 inch	700W	250W	Not listed	Not listed	Power Handling: Capable of handling up to 700 watts of peak power for deep, rich bass
Kicker 50CWCS84 CompC 8" Single Voice Coil Subwoofer - 4 Ohm	£98.95	In stock	Kicker	50CWCS84	Not listed	Car Subwoofers	Not listed	8 inch	200W	Not listed	Not listed	Not listed	All listed fields are shown

Product notes

What each pick is best at

Best overall bass upgrade

JS8.1 1000W 8" Single Voice Coil 4 Ohm Subwoofer Bass Driver

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

What we like

Lowest listed price in this comparison at £44.50, £35.49 below In Phase XT-6.
The only pick here listing 1000W power, giving it a clear difference from the other 5 options.
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

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	£44.50
Availability	In stock
Listed Power	1000W
Model	JS8
Size	8 inch
Warranty	1 Year Warranty
Brand	Juice
Bundle Options	Sub Only, Add Compatible Sealed Enclosure, Add Compatible Ported Enclosure, Add Compatible Sealed Enclosure and Amp, Add Compatible Ported Enclosure and Amp
Product Type	Subwoofer
Shipping Weight	5 kg

Check CarAudioCentre.co.uk

Best for compact installations

In Phase XT-6 800W Peak Power 6.5" Kevlar Cone 2 Ohm Dual Voice Coil Subwoofer

A 6.5-inch bass subwoofer choice for adding more weight to the system.

What we like

At £79.99, it costs £35.49 more than Juice JS8, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 6.5-inch size, giving it a clear difference from the other 5 options.
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 £35.49 above the cheapest pick, so the higher price depends on whether the distinct 6.5-inch size suits the installation.
The enclosure and underseat or boot dimensions still need checking, even where the product is described as compact.

Price	£79.99
Availability	In stock
Listed Power	800W
Model	XT-6
Size	6.5 inch
Warranty	2 Year Warranty
Brand	In Phase
Feature	Dual Voice Coil
Power Detail	2 Ohm
Product Type	Car Subwoofers
Shipping Weight	5 kg

Check CarAudioCentre.co.uk

Best for boot-based systems

BLAM RELAX BL-R8EL 300w 8inch (210mm) passive car audio subwoofer (2 Ohm)

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

What we like

At £89.00, it costs £44.50 more than Juice JS8, so the extra spend is tied to the specification and fitment choice.
The only pick here listing Passive design, 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 £44.50 above the cheapest pick, so the higher price depends on whether the distinct Passive design suits the installation.
A separate amplifier and suitable wiring are required, unlike the active alternatives.

Price	£89.00
Availability	In stock
Listed Power	300W
Model	BL-R8EL
Size	8 inch
Subwoofer Design	Passive
Brand	BLAM
Product Type	Car Subwoofers

Check CarAudioCentre.co.uk

Best for factory stereos

Pioneer TS-A2000LD2 8" 20cm 4ohm 700w Enlcosure-Type Dual Voice Coil Subwoofer

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

What we like

At £97.00, it costs £52.50 more than Juice JS8, so the extra spend is tied to the specification and fitment choice.
Its listed 8-inch size matches 4 other picks, 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 £52.50 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	£97.00
Availability	In stock
Listed Power	700W
Rms Power	250W
Size	8 inch
Speaker Design	Component
Brand	Pioneer
Feature	Dual Voice Coil
Power Detail	4 Ohm
Product Type	Car Subwoofers

Check CarAudioCentre.co.uk

Best for stronger low end

Pioneer TS-A2000LB 8" Subwoofer & Enclosure

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

What we like

At £98.34, it costs £53.84 more than Juice JS8, so the extra spend is tied to the specification and fitment choice.
Its listed 8-inch size matches 4 other picks, 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 £53.84 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	£98.34
Availability	In stock
Listed Power	700W
Rms Power	250W
Size	8 inch
Brand	Pioneer
Power Handling	Capable of handling up to 700 watts of peak power for deep, rich bass
Product Type	Subwoofer

Check CarAudioCentre.co.uk

Best for flexible installation

Kicker 50CWCS84 CompC 8" Single Voice Coil Subwoofer - 4 Ohm

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

What we like

At £98.95, it costs £54.45 more than Juice JS8, so the extra spend is tied to the specification and fitment choice.
The only pick here listing 200W power, giving it a clear difference from the other 5 options.
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 £54.45 above the cheapest pick, so the higher price depends on whether the distinct 200W power suits the installation.
The enclosure and underseat or boot dimensions still need checking, even where the product is described as compact.

Price	£98.95
Availability	In stock
Listed Power	200W
Model	50CWCS84
Size	8 inch
Brand	Kicker
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 8-Inch Car Subwoofersin 2026.

JS8.1 1000W 8" Single Voice Coil 4 Ohm Subwoofer Bass Driver

Our picks compared

What each pick is best at

JS8.1 1000W 8" Single Voice Coil 4 Ohm Subwoofer Bass Driver

What we like

What we don't like

In Phase XT-6 800W Peak Power 6.5" Kevlar Cone 2 Ohm Dual Voice Coil Subwoofer

What we like

What we don't like

BLAM RELAX BL-R8EL 300w 8inch (210mm) passive car audio subwoofer (2 Ohm)

What we like

What we don't like

Pioneer TS-A2000LD2 8" 20cm 4ohm 700w Enlcosure-Type Dual Voice Coil Subwoofer

What we like

What we don't like

Pioneer TS-A2000LB 8" Subwoofer & Enclosure

What we like

What we don't like

Kicker 50CWCS84 CompC 8" Single Voice Coil Subwoofer - 4 Ohm

What we like

What we don't like

What to check before ordering

Best 8-Inch Car Subwoofers
in 2026.