Manufactured For
YORKVILLE SOUND
GND
TORONTO, CANADA
TYPE: YS1038
1v3
230V
120VAC
120V
230V
50Hz
60Hz
0,5A
1.0A
60Hz
50Hz
4080001
CAUTION: REPLACE WITH
SAME TYPE FUSE AND RATING
ATTENTION: UTILISER UN FUSIBLE DE
RECHANGE DE MEME TYPE ET CALIBRE
Made in China
Depending on the wiring and configuration of the ¼-inch TRS plug, this jack is used as
an insert point allowing direct access to the MM4D's mixer output and internal 150-watt
power amplifier with one jack. This allows the use of outboard gear such as external graphic
equalizers, or other signal-processing devices.
To summarize, the MAIN OUT and AMP IN jacks can be used as a post-mix effects loop or
a signal-processing patch. The MAIN OUT (Tip) can serve as a main mix output, and AMP IN
(Ring) can be used as an auxiliary input to the internal power amplifier.
9. Tape In / Tape Out
The left and right channel audio signals passing through the MAIN gain control connect to
the Tape Out RCA jacks on the rear panel. Audio signals connected to the Tape In, on the
rear panel mounted RCA jacks pass through the TAPE gain control onto the main mixer left
and right audio busses routed to the MAIN gain control.
10. Speaker Output Jacks and Power Amplifier
The MM4D power amplifier delivers 150-watts into a 4-ohm load. There are two speaker out-
put jacks on the rear panel of the MM4D. You may connect an 8-ohm speaker to each jack,
or connect one 4-ohm speaker.
Caution: Do not overload the unit with speaker loads less than 4-ohms, as this will
degrade performance and reliability.
11. AC Voltage Selector Switch
The MM4D was designed to operate with 120V/60 Hz power or 230V/50Hz. Select proper
voltage before plugging unit into main AC power.
12. AC Power Connector and Fuse Holder
The fuse-holder is integrated into the standard IEC AC power cord receptacle. Always replace
the fuse with the same type and rating. If the fuse continuously blows, turn unit off and
have it checked out a by a qualified service technician.
SPEAKER OUTPUT
150 Watts MAX @ 4 ohms
FUSE
VALUES
120V/60Hz
4.0A/250V
230V/50Hz
F2,0A/250V
MM4D 1/4 inch T.R.S.
Main Out / Line In Jack
Tip = Main Out
Ring = Amp In
Main Out
Amp In
Ring Wire
Shaft = Ground
Tip = Main Out / Ring = Amp In / Sleeve = Ground
Main Out
Amp In
Standard 1/4-inch Phone Plugs
Tip = Main Out
Tip Wire
(to amplifier or pre-amp)
Ground
Wire
Ring = Amp In
(from source)
Main Out / Line In
Tape
Tape In
Tape Out
Main Out / Amp In
TIP = Main Out
RING = Amp In
SLEEVE = GND
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