GZHW 20XSPL-D1/D2

249,00€

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Subwoofer

Barcode: 4037072021295

Packaging Unit

impedance

Product variants

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.

Downloads

Bedienungsanleitung

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The Ground Zero GZHW 20XSPL-D1/D2 was developed for uncompromising bass performance and is aimed at discerning car audio enthusiasts and SPL competition participants. Thanks to its powerful triple-magnet system, 63-mm copper voice coil, and Klippel®-optimized design, the 20-cm subwoofer delivers enormous power reserves while maintaining high control and precision. The solid die-cast aluminum basket ensures maximum stability, while the reinforced paper cone and long-throw U-shaped surround guarantee clean and controlled reproduction even under heavy load. The dual-voice-coil versions allow for flexible adaptation to various amplifier configurations.

Technical Specifications

20 cm (8") High-Performance SPL Subwoofer
Available as:
- GZHW 20XSPL-D1 – Dual 1 Ω
- GZHW 20XSPL-D2 – Dual 2 Ω
Power handling: 700 watts RMS
SPL/Maximum Power Handling: 1,500 watts
Recommended amplifier power:
- D1: 500–1500 watts RMS at 2 Ω (0.5 Ω in parallel)
- D2: 500–1,500 watts RMS at 4 Ω (1 Ω in parallel)
63 mm (2.5") copper voice coil
Klippel®-Optimized Speaker Design
Efficient Triple-Ferrite Magnet System
Sturdy die-cast aluminum basket
Reinforced paper diaphragm
Long-stroke U-corrugation
2-layer Polycot centering
IMPP Dust-Proof Cap with 3D Logo
Press-Fit Connectors
Linear stroke (Xmax p2p): 40 mm
Sensitivity: 79 dB (1 W / 1 m)

Thiele-Small parameters

GZHW 20XSPL-D1

Impedance: 2 × 1 Ω
Re: 2.01 Ω
Resonance frequency (Fs): 38.9 Hz
Qms: 7.47
Qes: 0.60
Qts: 0.55
Capacity: 5.2 liters
Mass in motion (Mms): 191.5 g
BL factor: 12.8 Tm

GZHW 20XSPL-D2

Impedance: 2 × 2 Ω
Re: 4.18 Ω
Resonance frequency (Fs): 42.4 Hz
Qms: 6.79
Qes: 0.70
Qts: 0.63
Capacity: 4.3 liters
Mass in motion (Mms): 178.6 g
BL factor: 16.9 Tm

Dimensions

Outer diameter: 210 mm
Installation diameter: 187 mm
Installation depth: 145 mm
Total depth: 160 mm
Flange height: 9 mm

Highlights

Designed for extreme bass levels and SPL applications
High thermal power handling capacity thanks to a generously sized 63-mm voice coil
Sturdy aluminum basket for maximum stability
High mechanical excursion for powerful deep bass reproduction
Flexible wiring thanks to dual-voice-coil designs
Ideal for high-performance bass-reflex or SPL enclosure designs. Technical specifications are based on the manufacturer's official data.

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