JL AUDIO 12-Inch (300 Mm) Subwoofer Driver, 4 Ω -12W1v3-4

W1v3 12-inch Subwoofer (300 W, 4 Ω)

The 12W1v3 is a lightweight 12-inch driver with excellent performance capabilities at moderate power levels. It features moderate mounting depth with no pole-vent, so the rear of the motor structure can be placed directly against an enclosure boundary. Excellent excursion capability and linearity allow it to reproduce sub-bass with shocking extension and quality. Several of JL Audio's proprietary technologies enhance its performance and reliability.

The 12W1v3-4 is best used with amplifier power in the 75W - 300W range and is optimized to operate in a compact 1.10 cu. ft. (31.5 l) sealed enclosure. Detailed enclosure recommendations can be found in the "Specifications" tab.

General Specifications

Continuous Power Handling (RMS)	300 W
Recommended Amplifier Power (RMS)	75 - 300 W
Nominal Impedance (Znom)	4 Ω

Physical Specifications

Nominal Diameter	12.0 in / 300 mm
Overall Diameter (A)	12.5 in / 318 mm
Mounting Hole Diameter (B)	11.0625 in / 281 mm
Bolt Hole Circle Diameter (C)	11.7 in / 297 mm
Motor Outer Diameter (D)	5.25 in / 133 mm
Mounting Depth (E)	5.41 in / 137 mm
Driver Displacement	0.052 cu ft / 1.47 L
Net Weight	12.2 lb / 5.5 kg

Parameters

Free Air Resonance (Fs)	26.21 Hz
Electrical “Q” (Qes)	0.535
Mechanical “Q” (Qms)	8.2
Total Speaker “Q” (Qts)	0.502
Equivalent Compliance (Vas)	2.706 cu ft / 76.63 L
One-Way Linear Excursion (Xmax)*	0.45 in / 11 mm
Reference Efficiency (no)	0.25%
Efficiency (1 W / 1 m)**	86.1 dB SPL
Effective Piston Area (Sd)	81.426 sq in / 0.0525 sq m
DC Resistance (Re)	3.915 Ω
* Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied. ** Efficiency (1 W / 1 m) is not an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to determine which one is “louder”.

Sealed Enclosure Specifications

Wall Thickness	0.75 in / 19 mm
Front Baffle Thickness	0.75 in / 19 mm
Volume (net int.)	1.10 cu ft / 31.5 L
External Width (W)	16 in / 406 mm
External Height (H)	16 in / 406 mm
External Depth (D)	11 in / 279 mm
F3	39.63 Hz
Fc	48.75 Hz
Qtc	0.9338
Enclosure Notes * The enclosure recommendations listed above are external dimensions which assume the use of 0.75 in (19 mm) thick material. If you are using 0.625 in (16 mm) thick material, subtract 0.25 in (6.5 mm) from each dimension. Do not use any material with a thickness of less than 0.625 in (16 mm) as this may compromise the rigidity of the enclosure. * All enclosure volumes listed above are net internal volumes! Driver displacement, port displacement and brace displacement must be added to obtain the final gross internal volume. All enclosure dimensions above have already taken this into account. * When using multiple subwoofers in a common enclosure you will need to recalculate the enclosure and port dimensions. For assistance please contact your authorized JL Audio dealer or JL Audio Technical Support. * We recommend the use of this speaker in a bi-amplified system using high-quality satellite speakers and a high-quality amplifier. We do not recommend the use of this subwoofer with a passive crossover (coil), as this type of device will adversely affect performance. * All specifications are subject to change without notice. Safety Notice Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van.

Ported Enclosure Specifications

Wall Thickness	0.75 in / 19 mm
Front Baffle Thickness	0.75 in / 19 mm
Volume (net int.)	1.6 cu ft / 45.3 L
External Width (W)	25 in / 635 mm
External Height (H)	15.5 in / 394 mm
External Depth (D)	13 in / 330 mm
Internal Slot Port Width (SW)	1.5 in / 38 mm
Internal Slot Port Height (SH)	14 in / 356 mm
Internal Slot Port Length (SL)	30.75 in / 781 mm
Port Extension Length (EL)	17 in / 432 mm
Tuning Frequency (Fb)	31.79 Hz
F3	31.41 Hz
Safety Notice Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity. When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly important in a hatchback, station wagon, sports utility vehicle, or van.

✓ Available at our Brookvale workshop
✓ Installed by qualified auto electricians and audio technicians
✓ Over 30 years of combined car audio experience
✓ OEM-grade wiring looms, connectors and installation materials
✓ Warranty-backed workmanship
✓ Suitable for cars, 4WDs, SUVs, utes and commercial vehicles

Whether you're upgrading speakers, adding an amplifier, installing a multimedia system, fitting a dash cam, or improving vehicle security, our experienced installation team can recommend and fit the right solution for your vehicle.

Need installation pricing or advice? Contact our team on 02 993 92977or visit our Brookvale showroom.

Our Northern Beaches team can assist with:

✓ Product recommendations
✓ Vehicle compatibility checks
✓ Installation advice
✓ System upgrade planning
✓ Warranty and support enquiries

Call 02 993 92977, visit our Brookvale showroom, or use our contact form and we'll help you find the right solution for your vehicle.

Thank you for shopping at Audio Emporium. The following are the terms and conditions that constitute our Shipping Policy.

Where We Ship

We ship to all Australian states and territories, including PO Boxes. We do not currently ship outside Australia.

Shipment Processing

We aim to dispatch orders placed before [CUT-OFF TIME] AEST on a business day the same business day, where stock is on hand. Orders placed after the cut-off, on weekends or on public holidays are dispatched the next business day.

If we are experiencing a high volume of orders or if a product needs to be sourced from our distributor, dispatch may take longer. If there is a significant delay, we will contact you by email or phone.

Orders are not dispatched or delivered on weekends or public holidays.

Shipping Rates and Delivery Estimates

We offer free standard shipping on all orders within Australia to most metropolitan addresses. Bulky or heavy items — such as large subwoofers, multiple amplifiers, or full system shipments — may attract an additional freight surcharge, which will be shown at checkout before you confirm your order. Remote and regional addresses may also attract additional freight depending on the courier.

Estimates are guidelines provided by our courier partners. Delays can occasionally occur and are outside our control.

Carriers

We dispatch via [COURIER PARTNERS]. Carrier selection depends on order size, weight and destination.

Shipment Confirmation and Order Tracking

You will receive a Shipment Confirmation email once your order has been dispatched, containing your tracking number. The tracking number will typically be active within 24 hours.

Shipping to PO Boxes and Parcel Lockers

We can ship to PO Boxes and Australia Post Parcel Lockers, subject to carrier and item size restrictions. Bulky items may not be deliverable to these addresses; if that's the case for your order, we will contact you to arrange an alternative.

Damaged in Transit

If your order arrives damaged, please contact us at [EMAIL] or call [PHONE] within 48 hours of delivery, with photos of the damaged packaging and product. We will work with the courier to file a claim and arrange replacement or refund as appropriate. Please retain all original packaging until the claim is resolved.

Lost Parcels

If your tracking shows the parcel as delivered but you haven't received it, please contact us within 7 days of the delivery date so we can investigate with the courier.

Customs, Duties and Taxes

As we ship within Australia only, no customs duties apply. GST is included in all prices displayed on the site.

Click and Collect

Sydney customers can collect online orders directly from our Northern Beaches showroom by selecting "Click and Collect" at checkout, subject to stock availability. We will email you when your order is ready for collection. Please bring photo ID and a copy of your order confirmation.

Installation Customers

If your order includes installation at our Sydney workshop, products are held at the workshop and not shipped. We will contact you to confirm your installation booking.

Contact

Shipping questions can be sent to info@audioemporium.com.au or call 02 993 92977.