Power Amplifiers - YORKVILLE 2 Série Manuel De L'utilisateur

2 Main Functions for the Graphic EQ and Shelving Equalizers
i. To adjust the system to help reduce feedback, a normal technique is to turn the
main system up to the point of feedback and then adjust the EQ sliders individual-
ly to determine which frequency band will reduce the potential of feedback. When
the specific frequency band is isolated, set it to about -3 to -5 dB. Usually only 2
or 3 bands can be reduced before the feedback reduction process begins to affect
the sound quality.
ii. To adjust for deficiencies in the speaker system's high frequency and bass response,
the M810/M1610 also has a 2-band rotary shelving equalizer. These work in conjunc-
tion with the 9-band graphic. Yorkville engineers have developed this technique to
provide you with greater tone shaping capability. This allows the graphic equalizer
bands frequencies to be spaced at closer intervals, which mean better selectivity for
feedback reduction and sound shaping. You may want to turn up the Lo and Hi con-
trols to give the system a more HiFi sound when you're playing at lower volumes. At
higher volume levels, you may need to turn these controls down, this will help maxi-
mize the volume and tighten up the sound.
iii. The third use of the graphic equalizer is to adjust the sound character for artistic
reasons. The frequencies are adjusted until the sound feels best to the musicians.
M810/M1610 Rear Panel

1. Power Amplifiers

Each of the M810/M1610 dual power amplifiers has two ¼-inch jacks and 1 Speakon
jack for speaker connections. The power amplifiers are designed to provide full power into
a 4-ohm load. Connecting two 4-ohm speakers (2-ohm load) to either AMP A or AMP B
will not harm the M810/M1610 but the maximum power output may be reduced.
WARNING: Do not obstruct the flow of air around the vents on the rear of the
M810/M1610, this may cause the power amplifier to overheat. The amplifier will
start to reduce its power output in order to keep running. In extreme cases it may
be forced to shut down. If the clip LEDs are illuminated continuously and the Power
LED is off, this will indicate shutdown. After the M810/M1610 cools down, operation
will be restored automatically This condition should not occur if adequate ventila-
tion is provided at the back of the unit.
Phantom
SPEAKER OUTPUT SPEAKER OUTPUT
Power
B
CHANNEL CHANNEL
on
800 Watts MAX 800 Watts MAX
@ 4 ohms @ 4 ohms
(2 ohm min.) off (2 ohm min.)
2. Power Switch and Breaker
The Power switch and circuit breaker are located on the rear panel. If the circuit breaker
trips during use, wait a few minutes (to cool), then push in to reset. The circuit breaker
can trip if the amplifier is too heavily loaded with long periods of continuous tones (such
as feedback). If the circuit breaker trips immediately after being reset, take the unit to
your Yorkville dealer for service.
TYPE: YS1032
A
120VAC
60 Hz • 6.4 A
2 x 8 0 0 W a t t P o w e r e d M i x e r
S e r i e s 2
Circuit POWER
Breaker
ON
A-Z446A / 2.0
THIS UNIT MUST BE GROUNDED!
CET APPAREIL DOIT ETRE MIS Á TERRE!
DESIGNED & MANUFACTURED BY
YORKVILLE SOUND • TORONTO, CANADA
DISCONNECT POWER
BEFORE SERVICING!
DEBRANCHER L 'APPEREIL
AVANT D'ENLEVER
LES COUVERCLES!
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