Ground Zero | Barcode: 4037072017779

GZIW 250

129,00€

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Subwoofer

Packaging Unit

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 GZIW 250 is a powerful 25-cm subwoofer that combines precise low-frequency response with high power handling. Thanks to its torsionally rigid 3D-HQPP cone, generously sized 50-mm copper voice coil, and long-throw rubber surround, it delivers outstanding performance in both everyday use and more demanding car audio applications. The Klippel®-optimized design ensures controlled vibration behavior and clean bass reproduction even at higher volume levels. Thanks to its low resonance frequency, the GZIW 250 is ideal for deep, powerful bass in both sealed and bass-reflex enclosures.

Technical Specifications

Size: 25 cm (10")
Model: High-Quality Subwoofer
Power Handling (RMS): 250 watts
Recommended amplifier power: 200–300 watts RMS
Impedance: 1 × 4 ohms
Sensitivity: 87 dB (1 W / 1 m)
Voice coil: 50 mm copper
Diaphragm material: 3D HQPP (High-Quality Polypropylene)
Dust Cap: IMPP with 3D Logo
Bead: Long-stroke rubber bead
Centering: Polycot Spider
Basket: Low-resonance steel basket
Klippel®-optimized design
Maximum linear stroke (Xmax): 25 mm
Resonance frequency (Fs): 27 Hz
Total Quality (Qts): 0.44
Mechanical Quality (Qms): 10.73
Electrical quality (Qes): 0.45
Equivalent air volume (Vas): 49.3 liters
DC resistance (Re): 3.55 ohms
Inductance (Le): 2.36 mH
Mass in motion (Mms): 137.4 g
Force factor (BL): 13.15 Tm
Installation diameter: 230 mm
Outer diameter: 257 mm
Installation depth: 129 mm

Highlights

Powerful 25-cm subwoofer for precise low-frequency bass
Rigid 3D HQPP membrane for high stability
50-mm copper voice coil for reliable power handling
High linear excursion of 25 mm for impressive sound pressure
Klippel®-optimized design for low distortion
Ideal for sealed and bass-reflex enclosures
Perfect for everyday use and sound quality applications

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