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On the
Rear Panel:
35
34
33
32
Tweeter
Line Outputs
-6dB
-50dB
0dB
0
10
Level
Level
Low Z
Gnd
Lift
Bal.
27: Footswitch. Connect the supplied two-button footswitch here for
remote on/off control of the internal reverb and chorus. (When connect-
ed, the footswitch overrides the front panel chorus on/off switch.)
Note: This is a STEREO jack: tip controls the chorus, ring controls the
reverb, sleeve is ground. Use only a footswitch equipped with a stereo
1/4" plug.
28: Effects Loop Send. When using an external signal processor, connect
this jack to the input of the effect by means of a shielded signal cable.
29: Effects Loop Return. When using an external signal processor, connect
this jack to the output of the effect by means of a shielded signal cable.
30: High Z Bal. Use this jack to connect a high impedance, line level signal
to a house sound board, a recording console or an external power ampli-
fier by means of an 1/4" stereo plug-terminated cable. (Ring is signal +,
tip is signal -, and sleeve is ground.)
31: Low Z Bal. Use this jack to connect a low impedance, line level signal to
a house sound board, a recording console or an external power amplifi-
er by means of an XLR-terminated cable. (Pin 1 is ground, pin 2 is signal
+, and pin 3 is signal -.)
32: Ground Lift. This switch, when depressed, electronically disconnects
the low Z balanced output jack's chassis ground connection. If you expe-
rience excessive noise when using the low Z balanced output jack,
depress this switch.
33: Line Out Level. Use this control to adjust the output level of the line out
signal. (This control works independently from the amplifier's master
level control.)
34: Tweeter Level. Use this control to adust the signal output level from the
CA112D's internal tweeter. Rotating this control counter-clockwise
reduces the tweeter's output level.
Not Shown:
Power cord. Connect the end of this cord to a suitable source of line volt-
age. Refer to the voltage information on the back of the amplifier for its
voltage and current requirements.
Note: This is a grounded plug. To avoid the possibility of electric shock,
DO NOT defeat the ground connection in any way!
CA112D Block Diagram:
instrument
channel
input
filter
active
piezo
freq cut
phantom
power
vocal/aux
channel
low-z
input
gain
hi-z
input
aux channel
hi-z
input
gain
31
30
27
28
Effects
Foot
Loop
Switch
High Z
Return
Send
Reverb/
Bal.
Chorus
tones
rev/
effect
send
gain
low mid cntr
high
peak
rev/
effect
send
effect
return
effect
return
rev/
effect
send
The DSP
Section:
The CA112D features Crate's On-Board Digital Signal Processing
(DSP) technology that was designed specifically for use with acoustic
instruments and vocals. This provides a large selection of digital
reverbs, effects and delays. Select the type of effect desired by rotating
the Mode control (#22). This control is divided into five sections: Small
Area Reverbs (SAR), Large Area Reverbs (LAR), Special Reverbs
(SPR), Delays (DLY) and Multiple Effects (Multi).
The following chart provides a list of the DSP settings along with a brief
description of each effect.
SAR:
Small Room 8' x 8' empty room w/hardwood floor
Small Rehearsal Hall 20' x 40' hall, wood floors, hard walls
Large Hall 50' x 100' hall, about 50 persons
LAR:
Concert Hall 5000-seat hall, full crowd
SPR:
Plate Reverb Simulates studio steel plate reverb
Spring Reverb Simulates multi-spring reverb tank
DLY:
Slapback, short 125ms delay + reverb
Slapback, Med-short 240ms delay + reverb
Slapback, Medium 350ms delay + reverb
Slapback, Long 557ms delay - 630' travel time
Multi: Short Med. Surface 280ms delay w/21.8% regen + reverb
Medium Hard Surface 335ms delay w/26.5% regen + reverb
Chor-Delay 400ms delay with modulation
Chor-Verb Hall reverb w/modulated pre-delay
Slap-Verb Medium hall w/200ms pre-delay
Instrument Doubler Simulates second track slightly out-of-sync
master
effects
line out
chorus
on
depth rate
line out
hi-z
bal.
low-z
level
bal.
gnd
lift
Mode
DLY
SPR
LAR
Multi
SAR
mode
effects
send
off
DSP
high pass
graphic EQ
low pass
master
80 330 1k
4k 10k
level
Hz
foot
switch
reverb
return
25w
hi freq
driver
level
50w
dual
voice coil
low freq
driver
50w
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