Yorkville MM5D - Manuel (Page 7)

5
MM5D Rear Panel
1. Power Amplifiers
Each channel of the MM5D’s power amplifiers has a ¼-inch phone jack and a Speakon
jack for speaker connections. The power amplifiers are designed to provide full power into
a 4-ohm load. When speaker impedances lower than 4 ohms are connected, the amplifier
will go into PROTECT for six seconds, then test the speaker load with the audio signal. If
the speaker load is 4 ohms or higher the amplifier will return to normal operation. If the
speaker load is still less than 4 ohms the amplifier will go into PROTECT again for another
six seconds, then test the speaker load with the audio signal.
The heat sink fins on the rear of the MM5D are adequate to cool the amplifier for 8
ohm loudspeaker loads. If 4 ohm loudspeakers are used an internal fan may turn on to
keep the amplifier cool. The MM5D has more thermal capacity than any other equivalent
small box mixer.
WARNING: Do not obstruct the flow of air around the heat sink fins and the chassis
vents on the rear of the MM5D, as this may cause the power amplifier to overheat.
If the power amplifier overheats the amplifier will turn off the audio signal to protect
itself. After the MM5D cools down, operation will be restored automatically. This con-
dition should not occur if adequate ventilation is provided at the back of the unit.
2. Power Switch, Fuse, and Mains Voltage Selector
The Power switch, mains fuse, and mains voltage selector are located on the rear panel.
The fuse is located in the 115 volt / 230 volt power connector. If the fuse burns open
during use, replace it with the same value and type of fuse. Please note that a different
value of fuse must be used for 230 volt operation. If after replacing the fuse the fuse
burns open again, take the unit to your Yorkville dealer for service. To select the mains
voltage for the MM5D first remove the power cord from the MM5D. Now loosen do not
remove the two screws holding on the clear cover over the mains voltage selector switch.
Rotate the clear cover to access the mains voltage selector switch. Adjust the switch to
115VAC or 230VAC. You must know the mains voltage for your region in your country. Ask
someone before setting the switch to the wrong position and damaging your MM5D. Now
slide the clear cover over the screw and tighten the screws.
115VAC 60 Hz 1.0A
FUSE: T1,0AL 250V
230V 50 Hz 0,5A
FUSE: T2.0AL 250V sloblo
CAUTION: REPLACE WITH
SAME TYPE FUSE AND RATING
PLACE SERIAL NUMBER HERE
ATTENTION: UTILISER UN FUSIBLE DE
RECHANGE DE MEME TYPE ET CALIBRE
DESIGNED & MANUFACTURED FOR YORKVILLE SOUND • TORONTO, CANADA Made in China
L EFT R IGHT
SPKR OUT SPKR OUT
Power On
NOTE: USE APPROPRIATE FUSE
VALUE FOR VOLTAGE SELECTED!
SPEAK
ON
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1+/1–
MODEL TYPE: YS1083
MM5D
A-MM5D-R / 4v0
90 Watts MAX @ 4 Ω 90 Watts MAX @ 4 Ω
Mains Voltage
Select Switch