GT

Passive Full Range Loudspeaker

Passive Series

The GT Series is a professional passive loudspeaker designed for mobile

and fixed installations both as main sound reinforcement system or stage

monitor.

GT Series has been conceived as a multipurpose series suitable for

multi-function halls, multimedia conference rooms, lecture halls,

museums, exhibition centers, houses of worship, theaters and any venue

where sound quality is paramount.

AUDIOCENTER INTERNATIONAL

Unique and proprietary original technology and patents Adhering to the principle of standing on the shoulders of giants, Audiocenter integrates top European R&D teams

and top European loudspeaker and electronic suppliers.

To create stylish and compact loudspeaker designs with expert craftsmanship, high sound pressure

levels, and versatile applications

Serving the largest customer base with the best products

Allow more people to enjoy the latest and most advanced technology

Durable and suited to all weather conditions and scenarios

Design Concept

Joan La Roda

Audiocenter R&D Director

Joan La Roda is an European electro-acoustic engineer, graduated from the Polytechnic University of

Valencia (Spain), began his career in the audio industry since 1990 and has held various positions since

then. During these 33 years, he first worked as a touring sound engineer, gaining experience in real-life

situations. Then successfully designed sound systems for the largest Spanish audio manufacturer, including

a top-selling stage monitor which is with linear phase response using FIR filters. After this period, he

continued his career as a loudspeaker designer for several companies.

He has published educational articles in Spanish and English on phase alignment and tuning of cardioid

subwoofers and has given educational seminars in Southeast Asia, Europe, Oceania and Latin America.

Recently he published a book in Spanish to help people make the right choice when buying a sound system.

He now uses BEM (Boundary Element Method) techniques to design horns and line array waveguides for

Audiocenter.

01 02

Optimized and compact cabinet structure

design, using high-quality CNC cabinet,

strong and moisture-proof, suitable for

mobile applications.

Solid Wood Cabinet

The hybrid horn design using DMF composite

materials makes sure of HF equalization,

high-efficient signal and extremely low

distortion.

DMF Composite Material Horn Design

Latest driver technology and customized

drivers ensure a clean sound and

impressive dynamics.

Customized ProDriver

The 90°x60° HF horn can be rotated allowing

to choose the horizontal and vertical angles

that best suits your needs.

Rotatable Horn

GT passive series adopts 0° or 10° options

pole mount.

Double Pole Mount

The polyurea coating is waterproof, wear

resistance, impact resistance and aging

resistance.

Durable Polyurea Coating

Important Features

30 years experience Smart crossover

technology to ensure zero consumption

even in very high dynamic output.

Smart Crossover Design

When the HF driver of full range

loudspeaker overloads for long time, the

unique protection circuit on the crossover

board will limit the current or cut off the

signal to the driver, thus to protect the

driver from damage.

Unique Driver Protection Circuit

Latest driver technology and customized

drivers ensure a clean sound and

impressive dynamics.

30 years experience Smart crossover

technology

Customized ProDriver

Smart Crossover Design

Europe R&D design, German engineering standards

Gildestr.2,D-49477 Ibbenbüren

German Office

03 04

AUDIOCENTER Horn Technology

The horn used in the GT passive series has been developed in house by AUDIOCENTER R&D Department, using advanced and sophisticated

Boundary Element Method (BEM) technology. It is an original and innovative horn created by integrating Audiocenter's rich experience in the

audio industry.

GT passive series employs a unique horn design, with strong high-frequency penetration and transparency while providing a smooth coverage.

The high-frequency horn provides a coverage angle of 90°x60° is rotatable.

GT515P

Dimension(W×H×D)：421×696×416mm

D

H

W

Customized ProDriver

Smart Crossover Design to ensure zero consumption even in very

high dynamic output

Unique Driver Protection Circuit

DMF Composite Material Horn Design

90 ° rotatable HF horn

Durable Polyurea Coating

Double Pole Mount

Optimized and compact cabinet structure design

Product Features

GT515P features a buit-in passive crossover. This loudspeaker can be

used in multimedia function halls, museums, houses of worship,

shopping malls and other fixed installations.

The cabinet is made of high-quality wood, with an innovative and

compact multi-purpose symmetrical cabinet structure CNC machined.

This provides clear and powerful perfect sound quality. The base

mounting holes are available in 0° or 10° options. According to different

installation locations and methods, the cabinet can meet different

sound reinforcement installation environments.

Suggested Application

Product Profile

Specification

Passive full range loudspeaker

400W

40Hz-20kHz

90°/60°

60°/90°

130dB/136dB

1.75” voice coil, 1.0” exit

15” driver, 3.0” voice coil

8Ω

Passive

1.2kHz

Speakon 4Pin

CNC machined plywood

Durable Polyurea Coating

Black is the default color. Contact

Audiocenter for customization

Iron mesh

2 side

Symmetrical 45° monitoring Angle

M8 screw

Base hole Φ35mm, 0° or 10° options

421x696x416mm

516x785x516mm

22.0 kg

26.0 kg

Type

Rated power(AES)

Frequency Response(-10dB)

Horizontal Coverage

Vertical Coverage

Maximum Calculated

SPL/1M(Continuous/Peak)

HF

LF

Impedance

Crossover Mode

Crossover Point

Input Connectors

CABINET

Cabinet Material

Coating

Cabinet Color

Grille

Handles

Monitor Angle

Hanging Hardwares

Pole Mount

Speaker Dimension (W×H×D)

Carton Dimension (W×H×D)

Net Weight

Shipping Weight

House of Bar DJ

worship

Multi-functional

meeting room

Museum Lecture Meeting room Stage Monitor

05 06

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

Normalized Isobar Plot

Vertical Directivity

Horizontal Directivity

Frequency response at 1m when a 2.83v sinusoidal signal is applied. 1/6th octave smoothing

Impedance

Frequency Response Graphs

100 1k 10k

100

80

60

100

60

20

SPL Impedance

20 50 200 500 2k 5k 20k

110

90

70

50

120

80

40

0

GT512P

Dimension(W×H×D)：355×599×349mm

D

H

W

Product Features

Customized ProDriver

Smart Crossover Design to ensure zero consumption even in very

high dynamic output

Unique Driver Protection Circuit

DMF Composite Material Horn Design

90 ° rotatable HF horn

Durable Polyurea Coating

Double Pole Mount

Optimized and compact cabinet structure design

GT512P features a buit-in passive crossover. This loudspeaker can be

used in multimedia function halls, museums, houses of worship,

shopping malls and other fixed installations.

The cabinet is made of high-quality wood, with an innovative and

compact multi-purpose symmetrical cabinet structure CNC machined.

This provides clear and powerful perfect sound quality. The base

mounting holes are available in 0° or 10° options. According to different

installation locations and methods, the cabinet can meet different

sound reinforcement installation environments.

Specification

Passive full range loudspeaker

400W

42Hz-20kHz

90°/60°

60°/90°

128dB/134dB

1.75” voice coil, 1.0” exit

12” driver, 3.0” voice coil

8Ω

Passive

1.2kHz

Speakon 4Pin

CNC machined plywood

Durable Polyurea Coating

Black is the default color. Contact

Audiocenter for customization

Iron mesh

2 side

Symmetrical 45° monitoring Angle

M8 screw

Base hole Φ35mm, 0° or 10° options

355x599x349mm

446x688x446mm

19.0 kg

22.0 kg

Type

Rated power(AES)

Frequency Response(-10dB)

Horizontal Coverage

Vertical Coverage

Maximum Calculated

SPL/1M(Continuous/Peak)

HF

LF

Impedance

Crossover Mode

Crossover Point

Input Connectors

CABINET

Cabinet Material

Coating

Cabinet Color

Grille

Handles

Monitor Angle

Hanging Hardwares

Pole Mount

Speaker Dimension (W×H×D)

Carton Dimension (W×H×D)

Net Weight

Shipping Weight

Suggested Application

Product Profile

House of Bar DJ

worship

Multi-functional

meeting room

Museum Lecture Meeting room Stage Monitor

07 08

Normalized Isobar Plot

Vertical Directivity

Horizontal Directivity

Frequency response at 1m when a 2.83v sinusoidal signal is applied. 1/6th octave smoothing

Impedance

Frequency Response Graphs

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

100 1k 10k

100

80

60

100

60

20

SPL Impedance

20 50 200 500 2k 5k 20k

110

90

70

50

120

80

40

0

GT510P

Dimension(W×H×D)：288×526×325mm

D

H

W

Product Features

Customized ProDriver

Smart Crossover Design to ensure zero consumption even in very

high dynamic output

Unique Driver Protection Circuit

DMF Composite Material Horn Design

90 ° rotatable HF horn

Durable Polyurea Coating

Double Pole Mount

Optimized and compact cabinet structure design

GT510P features a buit-in passive crossover. This loudspeaker can be

used in multimedia function halls, museums, houses of worship,

shopping malls and other fixed installations.

The cabinet is made of high-quality wood, with an innovative and

compact multi-purpose symmetrical cabinet structure CNC machined.

This provides clear and powerful perfect sound quality. The base

mounting holes are available in 0° or 10° options. According to different

installation locations and methods, the cabinet can meet different

sound reinforcement installation environments.

Specification

Passive full range loudspeaker

250W

55Hz-20kHz

90°/60°

60°/90°

124dB/130dB

1.75” voice coil, 1.0” exit

10” driver, 2.5” voice coil

8Ω

Passive

1.4kHz

Speakon 4Pin

CNC machined plywood

Durable Polyurea Coating

Black is the default color. Contact

Audiocenter for customization

Iron mesh

1 top

/

M8 screw

Base hole Φ35mm, 0° or 10° options

288x526x325mm

383x610x415mm

13.0 kg

16.0 kg

Type

Rated power(AES)

Frequency Response(-10dB)

Horizontal Coverage

Vertical Coverage

Maximum Calculated

SPL/1M(Continuous/Peak)

HF

LF

Impedance

Crossover Mode

Crossover Point

Input Connectors

CABINET

Cabinet Material

Coating

Cabinet Color

Grille

Handles

Monitor Angle

Hanging Hardwares

Pole Mount

Speaker Dimension (W×H×D)

Carton Dimension (W×H×D)

Net Weight

Shipping Weight

Suggested Application

Product Profile

House of DJ Bar

worship

Multi-functional

meeting room

Museum Lecture Meeting room

09 10

Normalized Isobar Plot

Vertical Directivity

Horizontal Directivity

Frequency response at 1m when a 2.83v sinusoidal signal is applied. 1/6th octave smoothing

Impedance

Frequency Response Graphs

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

100 1k 10k

100

80

60

100

60

20

SPL Impedance

20 50 200 500 2k 5k 20k

110

90

70

50

120

80

40

0

GT508P

Dimension(W×H×D)：245×447×320mm

D

H

W

Product Features

Customized ProDriver

Smart Crossover Design to ensure zero consumption even in very

high dynamic output

Unique Driver Protection Circuit

DMF Composite Material Horn Design

90 ° rotatable HF horn

Durable Polyurea Coating

Double Pole Mount

Optimized and compact cabinet structure design

GT508P features a buit-in passive crossover. This loudspeaker can be

used in multimedia function halls, museums, houses of worship,

shopping malls and other fixed installations.

The cabinet is made of high-quality wood, with an innovative and

compact multi-purpose symmetrical cabinet structure CNC machined.

This provides clear and powerful perfect sound quality. The base

mounting holes are available in 0° or 10° options. According to

different installation locations and methods, the cabinet can meet

different sound reinforcement installation environments.

Specification

Passive full range loudspeaker

150W

65Hz-20kHz

90°/60°

60°/90°

119dB/125dB

1.75” voice coil, 1.0” exit

8” driver, 2.0” voice coil

8Ω

Passive

1.5kHz

Speakon 4Pin

CNC machined plywood

Durable Polyurea Coating

Black is the default color. Contact

Audiocenter for customization

Iron mesh

1 top

Symmetrical 45° monitoring Angle

M8 screw

Base hole Φ35mm, 0° or 10° options

245x447x320mm

336x531x410mm

11.0 kg

13.0 kg

Type

Rated power(AES)

Frequency Response(-10dB)

Horizontal Coverage

Vertical Coverage

Maximum Calculated

SPL/1M(Continuous/Peak)

HF

LF

Impedance

Crossover Mode

Crossover Point

Input Connectors

CABINET

Cabinet Material

Coating

Cabinet Color

Grille

Handles

Monitor Angle

Hanging Hardwares

Pole Mount

Speaker Dimension (W×H×D)

Carton Dimension (W×H×D)

Net Weight

Shipping Weight

Suggested Application

Product Profile

House of DJ Bar

worship

Multi-functional

meeting room

Museum Lecture Meeting room

11 12

Normalized Isobar Plot

Vertical Directivity

Horizontal Directivity

Frequency response at 1m when a 2.83v sinusoidal signal is applied. 1/6th octave smoothing

Impedance

Frequency Response Graphs

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

0

-6

-12

-18

-24

100 1k 10k

180

120

60

0

-60

-120

-180

Deg dB

200 500 2k 5k 20k

150

90

30

-30

-90

-150

100 1k 10k

100

80

60

100

60

20

SPL Impedance

20 50 200 500 2k 5k 20k

110

90

70

50

120

80

40

0

Cover

Accessories

Installations

Horizontal U bracket

Bearing 60KG

Flightcase

For 2 cabinets,

with 100mm wheels

Pole bar

Bearing 50KG

60°（ 90°）

90°（ 60°）

400W

800W

1600W

400W

800W

1600W

250W

500W

1000W

150W

300W

600W

130dB 128dB 124dB 119dB

133dB 131dB 127dB 122dB

136dB 134dB 130dB 125dB

40Hz-20kHz 42Hz-20kHz 55Hz-20kHz 65Hz-20kHz

26.0 kg 22.0 kg 16.0 kg 13.0 kg

516×785×516mm 446×688×446mm 383×610×415mm 336×531×410mm

Symmetrical 45° monitoring Angle /

Durable Polyurea Coating

Iron mesh

2 side 1 top

M8 screw

GT passive series Specifications

1.75” voice coil,1.0” exit

Continuous

Program

Peak

HF

LF

GT515P GT512P GT510P GT508P

15” driver, 3.0” voice coil 12” driver, 3.0” voice coil 10” driver, 2.5” voice coil 8” driver, 2.0” voice coil

Drivers

Impedance

Input Connectors

Horizontal Coverage

Vertical Coverage

Maximum

Calculated

SPL/1M

Frequency Response

(-10dB)

SPECIFICATIONS

Carton Dimension (W×H×D)

Speaker Dimension (W×H×D) 421×696×416mm 355×599×349mm 288×526×325mm 245×447×320mm

Shipping Weight

Net Weight 22.0 kg 19.0 kg 13.0 kg 11.0 kg

Coating

Pole Mount

Hanging Hardwares

Monitor Angle

Handles

Grille

Cabinet Color Black is the default color. Contact Audiocenter for customization

Cabinet Material

1 base hole Φ35mm on the bottom, 0° or 10° options

Technical Support and

After-sales Service

Optional Accessories Horizontal U bracket / Cover / Pole bar /Flightcase

CNC machined plywood

CABINET

Global application support team

All content subject to change without notice. All rights reserved. AC - GT passive - 202312

Crossover Mode Passive Crossover

Crossover Point 1.2kHz 1.4kHz 1.5kHz

8Ω

Speakon 4Pin

Power

(AES

standards)

Rated

Program

Peak

13 14

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