Ground Zero | Barcode: 4037072021936

GZRB 20SPL

Name: GZRB 20SPL
Brand: Ground Zero
Price: 269.00 EUR
Availability: InStock

269,00€

Tax included Shipping calculated at checkout.

Subwoofer

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 GZRB 20SPL is a compact bass-reflex subwoofer designed for demanding car audio applications. Despite its space-saving design, the integrated 20-cm RADIOACTIVE SPL subwoofer delivers powerful, punchy bass and impresses with its high power handling. The aerodynamically optimized bass-reflex enclosure ensures high efficiency and precise low-frequency reproduction—ideal for music genres with heavy bass.

The sturdy wooden enclosure reduces cabinet resonance and contributes to a clean sound. Thanks to the dual voice coil with 2 x 2 ohms, the subwoofer can be flexibly adapted to various amplifier configurations. When paired with a powerful amplifier, the GZRB 20SPL unleashes its full SPL potential and is suitable for both everyday music enjoyment and for those who love high volume.

Technical Specifications

Passive SPL Bass-Reflex Enclosure Subwoofer
Integrated Ground Zero RADIOACTIVE GZRW 8XSPL Subwoofer
Speaker diameter: 20 cm (8")
Power Handling (RMS): 500 watts
Power Handling (SPL): 1,000 watts
Recommended amplifier power: 400–1,000 watts RMS
Impedance: 2 × 2 ohms (dual voice coil)
Enclosure type: Bass reflex
Flow-optimized Airflow bass reflex tube
Sturdy wooden case
Screw/Clamp Terminal for Speaker Cables
Net tank volume: 21 liters
Dimensions (W × D × H): 440 × 240 × 280 mm
Applications: Car audio, SPL applications, compact subwoofer systems

Highlights

Compact bass-reflex enclosure with high sound pressure level
500 watts RMS / 1,000 watts SPL power handling capacity
Flexible connection options thanks to 2 × 2-ohm dual voice coils
High efficiency thanks to the Airflow bass-reflex system
Sturdy wooden enclosure for precise and powerful bass
Ideal for vehicles with limited trunk space
Pairs perfectly with high-performance mono power amplifiers

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