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XMAS25

Sundown X18 v4

Regular price 1.549,00€
Tax included Shipping calculated at checkout.



Free shipping from 49€

Shipping

✓ Free shipping from 49€ within Germany and from 99€ to the EU.

✓ Delivery times vary depending on the product and can be found on the product page, usually 1 - 3 working days for stock items, international shipping times vary, usually 6 - 10 working days.

✓ In most cases, shipping is carried out by DHL, UPS and GLS.

✓ Depending on the product and location, items can also be shipped with other providers.

✓ Tracking will be sent by email after the shipment has been processed.


Normal shipping route

✓ 1 - 40Kg = DHL, UPS and GLS

✓ 40.1 - maximum kg = forwarding agency

✓ Bulky goods = freight forwarder

✓ Customs shipments = DHL, GLS or freight forwarder

Parcel collection

✓ Collection takes place regularly from Monday to Friday, orders received by 3 p.m. are usually disposed of on the same day for goods in stock and transported directly to the parcel center.

5% discount for prepayment

Receive a 5% pre-payment discount. The discount is automatically deducted in the shopping cart/checkout and is valid for all products. Vouchers or discount codes may be excluded or already combined.

Wiring wizard & port computer

Use our wiring wizard for simple wiring of speakers and subwoofers! The correct connection is important for your amplifier! Low-impedance operation can damage the amplifier! The data sheet shows you which connection the respective amplifier is designed for!

Our port calculator shows you which tuning your enclosure has! The net volume is always particularly important here; calculate the pure chamber of the subwoofer beforehand to arrive at the correct result. The net volume is calculated minus all displacements and is important when designing the enclosure.

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Name: Sundown Audio

Address: Heinrich-Hertz-Straße 13A, 46325 Borken

Email: info@jr-labs.eu

Website: https://jr-labs.de/

European Manufacturer: No


The Sundown Xv4 18″ subwoofer offers unrivaled power and control for demanding bass lovers. Equipped with high-quality X v.4 voice coils, this subwoofer is rated for up to 3000W RMS power and 6000W peak power, ensuring maximum performance without distortion.

The optimized design improves air circulation and cooling, ensuring long-lasting performance even under heavy use. The advanced motor structure and large cone area ensure powerful and clear reproduction.

The Xv4 18″ is perfect for closed or bass reflex cabinets and offers you flexibility in setup and tuning - whether for SPL competitions or for everyday, high-quality music enjoyment.

Robust, reliable and beautifully finished, this subwoofer is the next generation upgrade your sound system deserves.

Key features

18″ Xv4 Series Subwoofer

3000 W RMS / 6000 W peak power

Options for two 1-ohm or two 2-ohm voice coils

Precision manufactured X v.4 coils for stability

High performance 23.5cm diameter motor

Deep bass response with 30 mm Xmax

Compatibility with closed or vented enclosures

Recommended port tuning: 32 Hz

Engineered for extreme durability and clear sound

Specification Power rating
RMS power 3000 W
Peak power 6000 W
Displacement 280L
Mounting depth 15″
Outer diameter 46,8cm
Cut-out diameter 42,4cm
Motor diameter 23,5cm
Sealed housing Not recommended
Ported housing 198 liters
Recommended port tuning 32 Hz

TSP: X 18" v4 D1 / D2
Xmax 30 mm
SD (conical surface) 113,41
RE (Ohm) 2,05 / 3,74
FS (Hz) 25,87 / 25,58
VAS (L) 93,67
Qes 0,63 / 0,55
Qms 4,13 / 4,03
Qts 0,54 / 0,84
BL (NA) 19,74 / 26,8
MMS 737,81 / 656,74
Sensitivity 86 / 87 dB

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