Справочник Пользователя для Mackie 1220I

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   Onyx 1220i

Mackie mixers use 3-pin female “XLR” connectors on 

all microphone inputs, with pin 1 wired to the grounded 
(earthed) shield, pin 2 wired to the “high” (”hot” or 
positive polarity) side of the audio signal and pin 3 
wired to the “low” (“cold” or negative polarity) side of 
the signal. See Figure A.

Use a male “XLR”-type connector, usually found on the 

nether end of what is called a “mic cable,” to connect to 
a  female XLR jack.

“TRS” stands for Tip-Ring-Sleeve, the three 

 connections available on a “stereo” 

1

⁄

4

" or  “balanced” 

phone jack or plug. See Figure B.

TRS jacks and plugs are used in several   different  

applications:

• 

Balanced mono circuits. When wired as a  
balanced connector, a 1⁄4" TRS jack or plug 
is connected tip to signal high (hot), ring to 
signal low (cold), and sleeve to ground (earth).

• 

Stereo Headphones, and rarely, stereo  
microphones and stereo line connections. 
When wired for stereo, a 1⁄4" TRS jack or plug is 
connected tip to left, ring to right and sleeve to 
ground (earth). Mackie mixers do not directly 
accept 1-plug-type stereo micro phones. They 
must be separated into a left cord and a right 
cord, which are plugged into two mic preamps.

• 

Unbalanced Send/Return circuits. When wired 
as send/return “Y” connector, a 1⁄4" TRS jack 
or plug is connected tip to signal send (output 
from mixer), ring to signal return (input back 
into mixer), and sleeve to ground (earth).

“TS” stands for Tip-Sleeve, the two connections  

available on a “mono” 1⁄4" phone jack or plug.  

 

See Figure C.

TS jacks and plugs are used in many different 

 applications, always unbalanced. The tip is connected to 
the audio signal and the sleeve to ground (earth). Some 
examples:

• Unbalanced 

microphones

• 

Electric guitars and electronic instruments

• 

Unbalanced line-level connections

• Speaker 

connections

Don’t use guitar cords for speaker cables! 
They’re not designed to handle speaker-level 
signals and could overheat.

RCA-type plugs (also known as phono plugs) and 

jacks are often used in home  stereo and video  
equipment and in many other applications (Figure D). 
They are  unbalanced and electrically identical to a   
1⁄4" TS phone plug or jack. See Figure C. Connect the 
signal to the center post and the ground (earth) or 
shield to the surrounding “basket.”