GZCA 13000.M1

Mono competition SPL amplifier

High-power mono class D amplifier

1-channel 1-ohm stable SPL high power amplifier with class D circuit, integrated active crossover and bass boost

SPL high power amplifier
High-efficient class D technology
Variable active crossover and bass boost
Particularly qualified for SPL and SQL applications
Stabilized high voltage power supply
Large terminals
Flat heatsink design in classic GZ style
Wired bass level remote control included

Model	Competition SPL amplifier
Channels	1
Output Power (@ 4Ω)	3200 Watts RMS
Output Power (@ 2Ω)	6400 Watts RMS
Output Power (@ 1Ω)	12560 Watts RMS / 14800 Watts max
Frequency Response	15 Hz – 200 Hz
HPF / LPF / BPF	● / ● / ●
Bass Boost / Phase switch	● / ○
High level input / Auto-on	○ / ○
Remote	●
BIAS Setting	○
Linkmode	○
Dimensions (W x L x H)	200 x 455 x 57 mm / 7.87″ x 17.91″ x 2.24″

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GZCA 3000X.M1

22. September 2025 / groundzero

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GZCA 3000X.M1

Mono competition SPL amplifier

Mono competition SPL amplifier

High-power class D amplifier

1-channel 1-ohm stable SPL high power amplifier with class D circuit, integrated active crossover and bass boost

SPL high power amplifier
High-efficient class D technology
Variable active crossover and bass boost
Particularly qualified for SPL and SQL applications
Stabilized high voltage power supply
Large terminals
Flat heatsink design in classic GZ style
Wired bass level remote control included

Model	Competition SPL amplifier
Channels	1
Output Power (@ 4Ω)	1000 Watts RMS
Output Power (@ 2Ω)	1825 Watts RMS
Output Power (@ 1Ω)	3180 Watts RMS / 4500 Watts max
Frequency Response	10 Hz – 200 kHz
HPF / LPF / BPF	● / ● / ●
Bass Boost / Phase switch	● / ○
High level input / Auto-on	○ / ○
Remote	●
BIAS Setting	○
Linkmode	○
Dimensions (W x L x H)	265 x 150 x 58 mm / 10.43″ x 5.91″ x 2.28″

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GZRW 8XSPL-D1

22. September 2025 / groundzero

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GZRW 8XSPL-D1

20 cm / 8″ high quality SPL subwoofer

20 cm / 8″ high quality SPL subwoofer

1000 Watts SPL

8″ high quality SPL subwoofer with reinforced paper cone, 2×1 ohm

8″ high quality SPL subwoofer
Klippel® optimized
Reinforced paper cone
Long stroke compound surround
Resonance free steel basket
50 mm / 2″ copper voice coil
Polycot spider
IMPP dust cap with 3D structure logo

Model	High-Quality SPL subwoofer
Diameter	20 cm / 8″
Power handling (RMS/SPL)	500 / 1000 Watts
Impedance	2x 2 Ohms
Efficiency	84.6 dB
Power recommendation	400 – 1000 Watts
Voice coil	50 mm / 2″ copper
Cone	Reinforced paper
Max. Excursion (Xmax)	22 mm / 0.866″
Mounting Ø	182 mm / 7.17″
Mounting depth	133 mm / 5.24″
Resonance frequency (Fs)	45.8 Hz
Overall quality (Qts)	0.36
Equiv. air volume (Vas)	7.4 L / 0.26 cu.ft.

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GZHW 16-D2

9. September 2025 / groundzero

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GZHW 16-D2

16 cm High-Performance Subwoofer

1000 Watts SPL

6.3″ High-Performance Subwoofer with alumiunum cast basket and reinforced paper cone

6.3″ high quality SPL subwoofer
Klippel® optimized
Reinforced paper cone
Long stroke compound surround
Solid aluminum cast basket
50 mm / 2″ copper voice coil
2-layer Polycot spider
Carbon dust cap

Model	High-Performance Subwoofer
Diameter	16 cm / 6.3”
Power handling (RMS/SPL)	500 / 1000 Watt
Impedance	2x 2 Ohms
Efficiency	81 dB
Power recommendation	400 – 1000 Watt
Voice coil	50 mm / 2” copper
Cone	Reinforced paper
Max. Excursion (Xmax))	30 mm / 1.18”
Mounting cut out Ø	153 mm / 6.02”
Mounting depth	110 mm / 4.33”
Resonance frequency (Fs)	51 Hz
Damping ratio (Qts)	0.46
Equiv. air volume (Vas)	2.8 L / 0.10 cu.ft.

GZHW 16-D2 Read More »

GZREM 1-A

4. July 2025 / groundzero

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GZREM 1-A

Optional bass remote control

Small profile cable remote

Remote control for COMPETITION series amplifiers

compatible with GZCA 3000X.M1/M2, GZCA 3000.M1-24V, GZCA 5000X.M1/M2, GZCA 8000.M1, GZCA 13000.M1, GZCA 300.Q1, GZCA 300.4-1Ohm
Including connection wire 500 cm
Control function: main level

Type	Wired remote Control
Housing	Black

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GZRB 20SPL-ACT

4. July 2025 / groundzero

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GZRB 20SPL-ACT

20 cm / 8″ Active vented SPL subwoofer enclosure

Active SPL subwoofer

Active vented enclosure including 8″ RADIOACTIVE SPL subwoofer

280/330 Watts amplifier
Airflow optimised ventilation
Wooden enclosure
High level input
Automatic turn-on function
Low pass filter
Phase correction
Preset Subsonic (20 Hz)
Remote-out
Bass level remote control included

Type	Active Subwoofer Box
Diameter	20 cm / 8″
Amplifier power (RMS/max.)	280 / 330 Watt
Impedance	2 Ohms
Net Volume	21 L / 0.74 cu.ft.
Subwoofer	GZRW 8XSPL-D1
Amplifier modul	GZ SUB-AMP 300
Dimensions (w x h x d)	440 x 240 x 280 mm / 17.32″ x 9.45″ x 11.02″

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GZPW 15C

4. July 2025 / groundzero

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GZPW 15C

38 cm / 15″ high power subwoofer

6500 Watts RMS

15″ high power subwoofer with airflow optimized aluminum cast basket

15″ high power subwoofer
Klippel® optimized
Carbon-fiber cone
Airflow optimized aluminum cast basket
100 mm / 4″, 4-layer flat wire CCA voice coil
7-layer 12” spider
Carbon fiber dust cap

Type	High-Power Subwoofer
Diameter	38 cm / 15″
Power handling (RMS)	6500 Watts
Impedance	2x 1 Ohm
Efficiency	86 dB
Power recommendation	4500 – 6500 Watts
Voice coil	100 mm / 4″ CCA
Cone	Carbon-fiber
Max. excursion (Xmax)	60 mm / 2.36″
Mounting Ø	360 mm / 14.17″
Mounting depth	300 mm / 11.8″
Resonance frequency (Fs)	31 Hz
Damping ratio (Qts)	0.51
Equiv. air volume (Vas)	28.18 L / 0.995 cu.ft.

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GZNW 38C

4. July 2025 / groundzero

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GZNW 38C

38 cm / 15″ high performance subwoofer

6000 Watts

15″ high performance subwoofer with airflow optimized aluminum cast basket

15″ high performance subwoofer
Klippel® optimized
Carbon-fiber cone
Airflow optimized aluminum cast basket
75 mm / 3″, 8-layer flat wire CCA voice coil
7-layer 12” spider
Carbon-fiber dust cap
Massive push terminals

Type	High-Performance SPL Subwoofer
Diameter	38 cm / 15″
Power handling (RMS/SPL)	6000 / 25000* Watts
Impedance	2x 1 Ohm
Efficiency	86 dB
Power recommendation	3000 – 6000 Watts
Voice coil	75 mm / 3″ CCA
Cone	Carbon-fiber
Max. excursion (Xmax)	80 mm / 3.15″
Mounting Ø	360 mm / 14.17″
Mounting depth	290 mm / 11.42″
Resonance frequency (Fs)	33 Hz
Damping ratio (Qts)	0.38
Equiv. air volume (Vas)	23 L / 0.81 cu.ft.

GZNW 38C Read More »

GZ BASS KIT 12.300X-II CONNECT

8. May 2025 / groundzero

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GZ BASS KIT 12.300X-II CONNECT

30 cm / 12″ vented subwoofer loaded enclosure with separate amplifier

GZ BASS KIT 12.300X-II CONNECT Read More »

Subwoofer package with 300 Watts amplifier

Vented enclosure with 30 cm / 12″ subwoofer and front bass vent, red logo stitch and side panels, bridgeable 2-channel amplifier

Subwoofer kit with amplifier
12″ subwoofer with IMPP cone
Vented enclosure with front aero-port
1.41 ft³ net volume
Mono class AB amplifier
300 Watts max output power
Variable active crossover + Bass Boost
High-level input with auto-on function
Including cable kit
Wired bass level remote control optionally available (usable in LPF mode)

Model	Subwoofer kit incl. 2-channel amplifier
Amplifier	GZBA 1.300X
Amplifier Power (RMS/max.)	200 / 300 Watts
Low Pass Filter	40 – 250 Hz
Bass Boost	0 – 6 dB (40 Hz)
Amplifier Frequency Response	15 Hz – 20 kHz
Input Sensitivity	200 mV – 6.5 V
High Pass Input	Yes
Auto-on Function	Yes
Dimensions	180 x 236 x 53 mm / 7.09″ x 9.29″ x 2.09″
Impedance Subwoofer	4 ohms
Net Box Volume	40 L / 1.41 cu.ft.
Box Dimensions	560 x 360 x 350/250 mm / 22.05″ x 14.17″ x 13.78″/9.84″

Owner’s Manual – DE

Owner’s Manual – EN

GZIA 1500.1

6. May 2025 / groundzero

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GZIA 1500.1

1-channel high quality class D amplifier

Powerful class D amplifier

1-channel subwoofer amplifier with class D circuit, integrated active crossover and regulated power supply

Mono amplifier
1 ohm stable
Class D technology
Variable active crossover and bass boost
High-level input with auto-on function & dummy load
GZ-PowerBalance power supply regulation
Large terminals
Black anodized heatsink with Ground Zero lettering
Bass remote control included
Triple protection circuit

Model	High quality class D amplifier
Channels	1
Output Power (@ 4Ω)	430 Watts RMS
Output Power (@ 2Ω)	850 Watts RMS
Output Power (@ 1Ω)	1530 Watts RMS
max. Output Power (CEA-2006A / 10%THD+N)	1900 Watts
Frequency Response	10 – 250 Hz
HPF / LPF / BPF	● / ● / ●
Bass Boost / Phase switch	● / ○
High level input / Auto-on	● / ●
Remote	●
BIAS Setting	○
Linkmode	○
Dimensions (W x L x H)	168 x 49 x 295 mm / 6.61″ x 1.93″ x 11.61″

GZIA 1500.1 Read More »

GZIA 1000.1

6. May 2025 / groundzero

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GZIA 1000.1

1-channel high quality class D amplifier

Powerful class D amplifier

1-channel subwoofer amplifier with class D circuit, integrated active crossover and regulated power supply

Mono amplifier
1 ohm stable
Class D technology
Variable active crossover and bass boost
High-level input with auto-on function & dummy load
GZ-PowerBalance power supply regulation
Large terminals
Black anodized heatsink with Ground Zero lettering
Bass remote control included
Triple protection circuit

Model	High quality class D amplifier
Channels	1
Output Power (@ 4Ω)	320 Watts RMS
Output Power (@ 2Ω)	670 Watts RMS
Output Power (@ 1Ω)	1250 Watts RMS
max. Output Power (CEA-2006A / 10%THD+N)	1500 Watts
Frequency Response	10 – 250 Hz
HPF / LPF / BPF	● / ● / ●
Bass Boost / Phase switch	● / ○
High level input / Auto-on	● / ●
Remote	●
BIAS Setting	○
Linkmode	○
Dimensions (W x L x H)	168 x 49 x 207 mm / 6.61″ x 1.93″ x 8.15″

GZIA 1000.1 Read More »

GZIA 500.1

6. May 2025 / groundzero

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GZIA 500.1

1-channel high quality class D amplifier

Powerful class D amplifier

1-channel subwoofer amplifier with class D circuit and integrated active crossover

Mono amplifier
1 ohm stable
Class D technology
Variable active crossover and bass boost
High-level input with auto-on function & dummy load
Stable power supply
Large terminals
Black anodized heatsink with Ground Zero lettering
Bass remote control included
Triple protection circuit

Model	High quality class D amplifier
Channels	1
Output Power (@ 4Ω)	230 Watts RMS
Output Power (@ 2Ω)	400 Watts RMS
Output Power (@ 1Ω)	580 Watts RMS
max. Output Power (CEA-2006A / 10%THD+N)	700 Watts
Frequency Response	15 – 250 Hz
HPF / LPF / BPF	● / ● / ●
Bass Boost / Phase switch	● / ○
High level input / Auto-on	● / ●
Remote	●
BIAS Setting	○
Linkmode	○
Dimensions (W x L x H)	168 x 49 x 212 mm / 6.61″ x 1.93″ x 8.35″

GZIA 500.1 Read More »

GZ GRILL 8.0

5. May 2025 / groundzero

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GZ GRILL 8.0

20 cm / 8″ Protection grill

Loudspeaker protection grill

20 cm / 8″ Protection grill

Two-part protective grille, consisting of grille and mounting ring
Solid NRG* loudspeaker protection grille
Including GZ logo plate
Fitting for GZCM 8.0XSPL
*NRG = Non Resonant Grill

GZ GRILL 8.0 Read More »

GZ GRILL 6.5

5. May 2025 / groundzero

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GZ GRILL 6.5

16,5 cm / 6.5″ Protection grill

Loudspeaker protection grill

16,5 cm / 6.5″ Protection grill

Two-part protective grille, consisting of grille and mounting ring
Solid NRG* loudspeaker protection grille
Including GZ logo plate
Fitting for GZCM 6.5XSPL, GZCF 6.5XSPL-NEO, GZCF 6.5XSPL
*NRG = Non Resonant Grill

GZ GRILL 6.5 Read More »

GZ GRILL 12U

5. May 2025 / groundzero

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GZ GRILL 12U

30 cm / 12″ subwoofer grill

Subwoofer protection grill

30 cm / 12″ Protection grill

Two-part protective grille, consisting of grille and mounting ring
Solid NRG* loudspeaker protection grille
Fitting for many Ground Zero 12″ subwoofers (see the tab “Additional Information”)
max. subwoofer’s outer diameter: 315 mm / 12.40“
*NRG = Non Resonant Grill

Compatible with

GZHW 12SPL-D2 FLAT

GZHW 30XSPL

GZIW 12XSPL-D2

GZIW 300

GZNW 30SPL-D1

GZRW 12XSPL

GZRW 30-D2

GZUW 12SQ-D2

GZ GRILL 12U Read More »

GZ GRILL 10U

5. May 2025 / groundzero

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GZ GRILL 10U

25 cm / 10″ subwoofer grill

Subwoofer protection grill

25 cm / 10″ Protection grill

Two-part protective grille, consisting of grille and mounting ring
Solid NRG* loudspeaker protection grille
Fitting for many Ground Zero 10″ subwoofers (see the tab “Additional Information”)
max. subwoofer’s outer diameter: 274 mm / 10.79“
*NRG = Non Resonant Grill

Compatible with

GZHW 10SPL-D2 FLAT

GZHW 25XSPL-D1

GZIW 10XSPL-D2

GZIW 250

GZRW 10XSPL

GZRW 25-D2

GZRW 250-D2 FLAT

GZ GRILL 10U Read More »

GZ GRILL 8U

5. May 2025 / groundzero

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GZ GRILL 8U

20 cm / 8″ subwoofer grill

Subwoofer protection grill

20 cm / 8″ Protection grill

Two-part protective grille, consisting of grille and mounting ring
Solid NRG* loudspeaker protection grille
Fitting for many Ground Zero 8″ subwoofers (see the tab “Additional Information”)
max. subwoofer’s outer diameter: 215 mm / 8.46“
*NRG = Non Resonant Grill

Compatible with

GZHW 8SPL-D2 FLAT

GZHW 20XSPL-D1

GZIW 200

GZRW 8XSPL

GZUW 8SQ-D2

GZ GRILL 8U Read More »

GZCA 8000.M1

5. May 2025 / groundzero

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GZCA 8000.M1

1-channel competition SPL amplifier

High-power mono class D amplifier

1-channel 1-ohm stable SPL high power amplifier with class D circuit, integrated active crossover and bass boost

SPL high power amplifier
High-efficient class D technology
Variable active crossover and bass boost
Particularly qualified for SPL and SQL applications
Stabilized high voltage power supply
Large terminals
Flat heatsink design in classic GZ style
Wired bass level remote control included

Model	Competition SPL amplifier
Channels	1
Output Power (@ 4Ω)	2400 Watts RMS
Output Power (@ 2Ω)	4500 Watts RMS
Output Power (@ 1Ω)	8100 Watts RMS
Output Power (@ 1Ω)	9800 Watts max
Frequency Response	10 Hz – 200 Hz
HPF / LPF / BPF	● / ● / ●
Bass Boost / Phase switch	● / ○
High level input / Auto-on	○ / ○
Remote	●
BIAS Setting	○
Linkmode	○
Dimensions (W x L x H)	200 x 308/342 x 57 mm / 7.87″ x 12.13″/13.46″ x 2.24″

GZCA 8000.M1 Read More »

GZNW 38NEO-XSPL

5. May 2025 / groundzero

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GZNW 38NEO-XSPL

38 cm / 15″ high performance SPL subwoofer with neodymium motor

25000 Watts SPL*

15″ high performance SPL subwoofer with airflow optimized aluminum cast basket

15″ high performance SPL subwoofer
Klippel® optimized
Carbon-fiber cone
Multi-piece neodymium motor
Airflow optimized aluminum cast basket
75 mm / 3″, 8-layer flat wire CCA voice coil
7-layer 12” spider
Carbon-fiber dust cap
Fixed connection cables
*for 3 sec.

Type	Neodymium SPL Subwoofer
Diameter	38 cm / 15″
Power handling (RMS)	6000 / 25000* Watts
Impedance	2x 1 Ohm
Efficiency	89 dB
Power recommendation	3000 – 6000 Watts
Voice coil	75 mm / 3″ CCA
Cone	Carbon-fiber
Max. excursion (Xmax)	80 mm / 3.15″
Mounting Ø	360 mm / 14.17″
Mounting depth	315 mm / 12.4″
Resonance frequency (Fs)	31 Hz
Damping ratio (Qts)	0.16
Equiv. air volume (Vas)	24.5 L / 0.91 cu.ft.

GZNW 38NEO-XSPL Read More »

GZNW 38XMAX-II

5. May 2025 / groundzero

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GZNW 38XMAX-II

38 cm / 15″ high performance long excursion subwoofer

4000 Watts RMS

15″ high performance long excursion subwoofer with airflow optimized aluminum cast basket and Xmax surround

15″ long excursion subwoofer
Klippel® optimized
Aluminum Cone & dust cap
3-layer long stroke surround
Airflow optimized aluminum cast basket
75 mm / 3″ aluminum round wire voice coil
7-layer 12” spider
Aluminum dust cap
Massive push terminals

Type	Long excursion Subwoofer
Diameter	38 cm / 15″
Power handling (RMS)	4000 Watts
Impedance	2x 1 Ohm
Efficiency	84 dB
Power recommendation	2000 – 6000 Watts
Voice coil	75 mm / 3″ aluminum
Cone	Aluminum
Max. excursion (Xmax)	62 mm / 2.36″
Mounting Ø	360 mm / 14.17″
Mounting depth	300 mm / 11.81″
Resonance frequency (Fs)	31 Hz
Damping ratio (Qts)	0.51
Equiv. air volume (Vas)	26.2 L / 0.93 cu.ft.