JL Audio Xdm400/4 4 Ch. Class D, Full-Range Car/Marine Amplifier, 400 W
4-Channel Class D Full-Range Car/Marine Amplifier, 100 W x 4 @ 2 Ω / 75 W x 4 @ 4 Ω - 14.4V
The ultra-compact XDM400/4 packs a serious full-range punch, generating a whopping 100 watts to each of its four channels into 2 ohms (14.4V, 1% THD). The technology that makes this much power possible in such a compact chassis is our advanced NexD™ high-speed switching design, which permits full bandwidth Class D operation with extremely low distortion and remarkable efficiency.
Suitable for car or boat installations, the XDM400/4 is built with marine-grade materials and features an exclusive, dual-mode input filter for noise-free performance in boats or cars. Automatic turn-on capability (via signal sensing or DC-offset sensing) is also onboard for easy factory system upgrades.
Combine the XDM400/4 with our XDM600/1 monoblock to build a stunning 1000 W amplification system to power four satellites and a subwoofer... and fit the whole thing under a seat or deck. Or, use the XDM400/4 by itself to power two satellites, plus a subwoofer.
The XDM400/4 includes a 12 dB / octave filter for each channel bank, which can be configured as a low-pass or high-pass filter and offers continuously variable cutoff frequency selection from 50-500 Hz. With the addition of an optional HD-RLC or MHD-RLC (water-resistant) remote level controller (each sold separately), you have the ability to adjust the level of all amplifier channels or just the rear channels directly from the driver's seat or cockpit.
Finished in a sleek, black powder-coat, all controls are protected beneath a gasketed, removable top cover for easy access.
| @ 4 Ω | 75 W RMS x 4 |
| @ 2 Ω | 100 W RMS x 4 |
| Bridged @ 4Ω | 200 W RMS x 2 |
| @ 4 Ω | 60 W RMS x 4 |
| @ 2 Ω | 90 W RMS x 4 |
| Bridged @ 4Ω | 180 W RMS x 2 |
| Frequency Response | 12 Hz - 22 kHz (+0, -1dB) |
| S/N Ratio, referred to highest rated power | >104 dB below rated power (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| S/N Ratio, referred to 1 W | >84 dB (A-weighted, 20 Hz - 20 kHz noise bandwidth) |
| Damping Factor @ 4 Ω | >150 / 50 Hz |
| Damping Factor @ 2 Ω | >75 / 50 Hz |
| THD+N @ Rated Power | <1% @ 2 Ω per Ch. |
| Input Voltage Range @ RCA Inputs | 200 mV - 4 V RMS |
| Min.Copper Power / Ground Wire Gauge | 4 AWG wire |
| Fuse Rating | 40 A (AFS, AGU or MaxiFuse™) |
| Filter Mode(s) | Low-Pass or High-Pass |
| Filter Slope(s) | 12 dB/octave |
| Filter Frequency Range | 50 Hz - 500 Hz |
| Detented, Calibrated Filter Freq. Potentiometers | Yes |
| Filter Defeat Function | Yes |
| Remote Level Control | Optional HD-RLC or MHD-RLC (water-resistant) |
| Remote Level Modes | 2 or All channels |
| Channel Input Mode Switch | Yes (2/4 ch.) |
| Pass-Through Preamp Output | Buffered |
| Source Channel Selection for PreOuts | Yes |
| Height (H) | 2.05 in / 52 mm |
| Width (W) | 8.52 in / 216 mm |
| Depth (D) | 7.09 in / 180 mm |
| Net Weight | 6.3 lb / 2.86 kg |
✓ 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.
|
Destination |
Estimated delivery |
|---|---|
|
Sydney metro |
1–3 business days |
|
Other capital cities |
2–5 business days |
|
Regional Australia |
3–7 business days |
|
Remote / WA / NT |
5–10 business days |
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.
- Fast Dispatch From Sydney
- Authorised Australian Dealer