| Corus was designed to meet the demands of some guitaristists and
other instrumentalists who wanted AI sound, but with a somewhat more
“forward” character. To achieve this,
a different crossover and woofer were used in a Coda R to trade off
bass extension below 60 Hz for greater volume and mid-range projection.
As a result, Corus allows players who are prepared to trade off some
bass extension to enjoy the many benefits of a downfiring woofer (more
natural sound, a broader soundstage, etc.) while being heard more
forcefully out front.
While
most guitarists, keyboardists, violinists and violas select Corus, some
continue to prefer Coda R for its more laid back presentation and
deeper bass presence. In addition, some cellists and bassists choose
Corus over Coda because the sound happens to better suit their ear.
With all Acoustic Image amplifiers delivering a broad frequency range
of high fidelity sound, product selection is a matter of personal
preference (see the How To Select tab on the home page).
At
400W into 4 ohms, Corus will play surprisingly loud without distortion
and is more than adequate for the vast majority of rooms. In addition,
it offers a direct out to tie into the PA for large venues. But when
truly big volume is needed from the amp, addition of a Corus EX
extension speaker increases both power and coverage dramatically.
A Corus EX also takes the Corus sound for guitar and violin from
transparent to truly holographic. In addition, guitarist/vocalists who
also use the Corus as a PA may want an extension cab for greater
coverage in mid-size venues.
Corus:
A Coda R with more forward sound
and slightly reduced bass response.
Great for guitar and much more.
- Different
crossover, woofer deliver more forward sound, slightly less bass
response than Coda R. Otherwise, offers the same features.
- Designed for guitar, other higher-voiced instruments but preferred by some bassists (See FAQs below)
- Three-Way Sealed Speaker System
- 10” Downfiring Woofer
- 5” Midrange Driver
- 1” Tweeter (with On/Off Switch)
- Lightweight (20 lbs) Molded Polymer Enclosure
- Three-Band EQ Preamp Section Per Channel
- Combo Jack Inputs (Either 1/4 in or XLR)
- Phantom Power on XLR Inputs
- Input and Master Level Controls
- Effects Loop with Return Level Control Per Channel
- Digital Effects with 6 Presets and Level Control
- Switchable Notch/Low Cut Filter per Channel
- Balanced Direct Out with Ground Lift
- Mute Switch and Pre/Post EQ for Direct Out
- Stereo Capable with External Power Amp
- 400 Watt Switch Mode Power Amplifier
- Switchable Dual Voltage Operation (115/230V)
- Comes with a fitted slip cover with cord storage pocket and shoulder strap
Technical Specs
System |
|
Frequency Response |
50
Hz - 20 kHz, (60-16 kHz ±3 dB) |
Max SPL |
>112 dB at 1 meter |
AC Power |
115V/60Hz, 230/50Hz, switchable
(Japan version is 100V, 50/60Hz only) |
Size |
12" H x 15" W x 13" D |
Weight |
20 pounds
|
Preamp |
Mic Input |
600 ohm balanced, XLR connector |
Phantom Power |
48 volts, on/off switch w/LED indicator |
Instrument Input |
1 Mohm impedance, 1/4 inch jack |
Direct Out |
+4 dB, balanced, XLR connector,
ground lift,
pre/post EQ selector |
Effects Loop |
Parallel type with return level
control |
Bass Control |
Shelving type, ±15 dB @
60 Hz |
Mid Control |
±15 dB @ 650 Hz |
Treble Control |
Shelving type, ±25 dB @
10 kHz |
Notch Filter |
>-18 dB sweepable from 30 to
800 Hz |
Low Cut Filter |
-12 dB/octave sweepable from 30
to 800 Hz |
Effects |
Type |
Digital with 6 presets and level control |
Program Presets |
3 reverb (hall, room, plate), delay, ambient
chorus, flange |
Power Amp |
Topology |
Class D, (PWM) |
Switching Frequency |
200 kHz |
Output Power |
>400 Watts, >500 Watts with
4 Ohm ext. cab. |
External Speaker Output |
Neutrik Speakon type (pole 1),
4 Ohm min. |
Speaker Components |
Woofer |
10 inch, downfiring |
Mid range |
5 inch, forward firing |
Tweeter |
1 inch forward firing with on/off
switch |
Crossover |
Passive, alignment corrected |
Supplied Accessories |
Fitted slip cover with cord storage pocket
and shoulder strap |
Available Accessories |
Padded gig bag with shoulder strap
made by Mooradian, hard shell case, "twist lock" to "twist
lock"
and "twist lock" to 1/4 inch speaker cables |
Control Panel 
Rear Panel
Stylish optional protection for the Corus
Deluxe padded case by Mooradian
Hard shell travel case
Optional Corus
EX:
Coverage and power expansion
in a compact extension cab.
Available as a Corus EX to match Corus combo.
- 4-ohm cabinet, with 10-inch downfiring woofer, frontfiring 5-inch midrange, defeatable 1-inch tweeter
- Ideal extension enclosure for Contra, Coda R, Corus (increases power output, volume, expands soundstage even further)
- Perfect match as main speaker for Clarus and Focus
- Comes with a fitted slip cover with cord storage pocket and shoulder strap.
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