27: Tweeter On/Off switch. This switch, when depressed, deactivates the CA60D’s
internal tweeter.
28: Footswitch. Connect the supplied two-button footswitch here for remote on/off
control of the internal reverb and chorus. (When connected, the footswitch over-
rides 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.
29: 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.
30: 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.
31: Ground Lift. This switch, when depressed, electronically disconnects the low Z
balanced output jack’s chassis ground connection. If you experience excessive
noise when using the low Z balanced output jack, depress this switch.
32: 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 amplifier by
means of an 1/4” stereo plug-terminated cable. (Ring is signal +, tip is signal -,
and sleeve is ground.)
33: 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 amplifier by means of an
XLR-terminated cable. (Pin 1 is ground, pin 2 is signal +, and pin 3 is signal -.)
34: 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.)
Not Shown:
Power cord. Connect the end of this cord to a suitable source of line voltage.
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!
CA60D Block Diagram:
The DSP
Section:
The CA60D 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 (#23). 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
LAR:
Large Hall 50’ x 100’ hall, about 50 persons
Concert Hall 5000-seat hall, full crowd
SPR:
Plate Reverb Simulates studio steel plate reverb
Spring Reverb Simulates multi-spring reverb tank
DL
Y: 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
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