Chiayo GMC-30 User manual

Brand: Chiayo

Model: GMC-30

Type: User manual

Chiayo GMC-30 is a 30-Unit Conference Microphone Audio Converter that allows for the connection of up to 30 GM-143 series gooseneck microphones, providing balanced and unbalanced audio outputs for easy integration with mixers, amplifiers, or other audio systems. It features a chairman-delegate switch to prioritize the chairman's microphone, a system expansion port for linking multiple units, and compatibility with both RJ45 and XLR connectors. The GMC-30 is a versatile solution for conference rooms, meeting spaces, and other applications requiring high-quality audio conferencing.

CHIAYO ELECTRONICS CO., LTD.

Operation manual

GMC-30

30-Unit Conference Microphone Audio

Converter

POWE R PWR PORT1 POR T2 PORT3 SYSTEM

C S

Gooseneck Microphone Converter

GMC-30

GMC-30 30-Unit Conference Microphone Audio Converter

Parts and functions

1. Power switch

2. Power indicator

3. Port ① indicator

4. Port ② indicator

5. Port ③ indicator

6. Chairman-Delegate switch

7. GMC-30 series connection jack

8. Unbalanced audio output (Φ6.3mm)

9. Balanced audio output (XLR)

10. Port ③

11. Port ②

12. Port ①

13. DC input (15V 4.3V)

Note: PORT 1~3 indicators ③④⑤ function with GM-143 of RJ-45 jack only. GM-143 of

RJ45 jack can work with GMC-30 without port indicators functioning.

Instructions

1. Installation with GM-143 series

There are three ports ○

10 ~○

12 on the back of convertor. Each port can be connected with a

GM-143 series of up to 10 units. Each convertor can support 30 units at most.

2. System expansion

When more than 30 units are required or the ports aren’t enough, GMC-30 can link to

another convertor via its rear port ⑦ to support more GM-143 units.

3. CHAIRMAN-DELEGATE switch ⑥

If the convertor’s connected units include GM-143C (chairman unit), please slide the switch

to C. Otherwise, please slide it to S.

4. Audio output

There are two audio connecters on the rear of this unit, LINE-level unbalanced ⑧ and MIC-

level balanced ⑨. Use shielded audio cable for the connection between this unit and the

mixer/amp or audio source. If the mixer/amp has a LINE IN phone jack (1/4", 6.3mm),

connect a cable from the 1/4"(6.3mm) unbalanced audio output ⑧ from the convertor to the

mixer/amp. If the mixer has a MIC IN XLR jack, connect a cable from the balanced XLR

audio output ⑨ from the convertor to the mixer/amp.

POW ER PWR PORT 1 PORT2 PORT 3 SYSTE M

C S

Gooseneck Microphone Converter

GMC-30

12 3 4 5 6

POR T1POR T2P O RT3LINK DC INLINE OUT B ALANC ED

15V 4.3A

7 8 9 10 11 12 13

Instructions

Insert the plug

Pull out the plug

1 2 3

4 5 6

7 8 9

Lock bar

Use finger to

push the lock bar

to the bottom Done!

1 2

3 4 5

6 7 8

Lock bar

Prepare to unlock

Push lock bar Locked!

GMC-30 30-Unit Conference Microphone Audio Converter

Installation diagram

POR T1POR T2P OR T 3LIN K DC INLINE OU T BAL ANC ED

15V 4.3A

CHIAYO ELECTRONICS CO., LTD.

Http://www.chiayo.com.tw｜Email: sales@chiayo.com.tw

Office: 30, Lane 27, Section 4, Jen-Ai Road, Taipei 10685, Taiwan

Tel: 886-2-27415741｜Fax: 886-2-27525242

Factory: 88, Chung-Hsiao Street 2, Chiayi 60080, Taiwan

Tel: 886-5-2711000｜Fax: 886-5-5767611 12I1371

CAT.6 cable

(recommended)

CAT.6 cable

(recommended)

GMC-30 audio convertor

Power supply

Unbalanced audio

output (6.3mm)

Balanced audio

output (XLR)

Chiayo GMC-30 User manual

Chiayo GMC-30 User manual

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