Crown D-75 Service Manual

I · • .. • crown D75· • I
F C DE E D C B A
FIG. 2. J FRONT FAC/LlTfED (0-75)
2 Facilities
A. Power
The AC powe r swilth, mounted at th e ri ght-hand comer
of th e 0 -75 is a s imple 2 position "on/orr' co ntrol. If th e
AC powe r switch is po sitioned at "on", the powe r
irw:licato r should be on (8).
B. Power Indicator
Amber indi cator thai th e unit is on.
C. Level
Th e level of each ch annel is independen tl y controlled by
these controls. The control for ch an nel 2 should be turned
do wn and not u sed when opera ting in MONO mod e.
D. IOC '"
An InputlOutpul Comparator LED is pr ovided for each
channel. Ill umination may occur at such Lim es as wh en
there is too high an input level, im proper load impedance,
output s
tag e clipping or even an amplifier based probl em.
2·1 Faci lities
E. Signal Presence Indication
A sig nal pre se n ce indi cat ion LED is pr ov id ed for each
channel to i
ndi cate whe n signal is presenl Unl ike the "onJ
orr' state o rlh e I OC indicators the SP) LED's will vary
with signal Jcvcl
F. Output Monitor
A s ta ndard 1/4 inch stereo jack is provided on th e fron t
panel. It is in parallel with the main outputs (0) and can
be used to dri ve headphones. -
G. Output Binding Posts
Dual binding postco nn ectors arc provided at lh e output of
eac h cha nnel . Use dual banana plugs on lh e spe aker
cables for connection to thcjacks. In brid ged· MONO,
only the t wO top jacks (red) are used.
H. Dual-Mono
S li de this sw i tc h to the left (c h. I) for MONO mode and
10 lh e ri ght (e h. 2) for Stereo mode operation. In MONO
mod e the input and l ev el con trol for c ham 'IC l tw o should
not
be used and o nl y balanced (ungrounded) loads sho uld
be connected 10 th e outp ut jacks.

Crown D-75 Specifications

General

Brand	Crown
Model	D-75
Category	Amplifier
Language	English