Amplifiers & Speakers:  Combo Amps

Corus III Guitar Combo Amplifier (and other instruments)

Manufactured by: Acoustic Image

When first introduced, the Acoustic Image Contra Amplifier became one of the most exciting and innovative products for the acoustic instrument world in recent memory. The Coda R added a complete second channel and sophisticated digital effects processor. This brand-new model to the Acoustic Image line, the Corus, is specially tailored to the needs of guitarists and other instrumentalists who don't need the extended low range of the Contra and Coda R.

Like the popular Coda R, this unique amplification system continues to combine a state-of-the-art power amp and an acoustic instrument-optimized two-channel preamp section, with a downfiring ten-inch speaker, five-inch midrange, and switchable tweeter. Also like the Coda R, the Corus includes a digital effects processor with reverbs, delay, chorus, flange... All very useful effects for guitar, cello, mandolin, and more.

The difference is the special design woofer, which replaces the standard subwoofer-style speaker in the Coda R. The Coda's woofer has been replaced with a more efficient one, and the crossover network is changed to accommodate the new woofer. The other speakers in the cabinet remain the same. The result is a more efficient, more forward-sounding cabinet. The trade-off is slightly less bass response. The Corus sounds louder than the Coda R at a given level setting and it sounds more forward. It is designed to better match the needs for guitar and other instruments that occupy the sonic space above basses. Frequency response: 60-16kHz (+/- 3 dB) versus 40-16kHz for the Coda R, and Efficiency: 93 dB/m versus 90 dB/m for the Coda R.

Ultimately, what you get with all Acoustic Image combos is flat frequency response across the spectrum, with extended, tight, well-controlled natural low-range sound, and a more "forward" and "direct" sound than the Contra and Coda R — all in a package that's about a foot tall and less than 20 pounds in weight! The high efficiency electrical output of the Acoustic Image 400-watt switching amplifier will provide enough SPL for a noisy club or big band setting. Add a second, matching Corus EX cabinet and the amp puts out 500w! And you can put them next to each other or spread your sound across the stage by setting them further apart.

Features have been designed into the newest series of AI amps to add flexibility for various playing situations. These include a parallel effects loop with a return level control, a selectable notch or high pass filter for feedback or “boominess” elimination and a balanced direct out with ground lift to allow connection to a mixing board for PA augmentation or recording. A redesigned built-in "kickstand" allows the cabinet to be tilted to better direct sound to the player’s listening position. A switch for dual voltage operation (115/230V, 50/60 Hz), a detachable power cord, and a free dust cover with shoulder strap and cable pocket make the unit convenient for the traveling musician. Heavier duty all-encompassing carry bags and hard cases are also available. For larger venues, the Corus EX (Series III) extension cabinet is an ideal match. A 6-preset digital effects processor and second channel is included.

NEW: Included with the Corus, Contra, Contra/Corus EX, and Coda R is a new dust cover with shoulder strap and accessory pocket.

This slip-cover surrounds the top and sides of the cabinet, with strategically placed holes on the upper sides to allow access to the handles. The novel carry strap includes two pieces of material that loop around each handle so a pair of eyelets meet, connecting to the padded shoulder strap.

The photo at left shows it ready to be transported. A zippered pouch is provided to carry the power cable and other small items, shown in the photo to the right (without the carry strap). This light-duty cover will not shield the units from rain, and it does not cover the bottom of the cabinet; if you want a higher level of protection, ask us about the hard and soft cases that are available.

• Three-way Sealed Speaker System
• 10" Long-throw Low-frequency Woofer, special design
• 5" High-frequency Driver
• 1" Tweeter (with On/Off Switch)
• 500-Watt "Digital" Power Amplifier, 500w @2 ohms, 400w @4 ohms (internal speaker is 4 ohms)
• Input and Master Level Controls
• Mute Switch
• Three Band EQ (each channel):
  • Bass Control: Shelving type, ±15 dB @ 60 Hz
  • Mid Control: ±15 dB @ 650 kHz
  • Treble Control: Shelving type, ±15 dB @ 10 kHz
• Switchable Notch/High Pass Filter
  • Notch Filter: -12 dB sweepable from 30 to 700 Hz
    Notch Control lets you reduce the volume of a single frequency to help fight a feedback or resonance problem
  • High Pass Filter: -12 dB/octave sweepable from 30 to 700 Hz
    The High Pass filter lets you reduce the response below a frequency of your choice, to fight the mud on boomy stages and in similar situations
• Two identical channels for any mix of instruments and microphones
• Combination Jacks allow the use of a 1/4" or XLR input; input impedances are 1 megohm or 600 ohms based on jack chosen, separately buffered
• Separate Effects Loops via 1/4" phone jacks with Return Level Control for each channel
• Balanced XLR Line Output with Ground Lift
• PRE- or POST-effects switch XLR output
• Six Digital Effects including three reverbs, one delay, one chorus, and one flanger using technology licensed from Alesis; Acoustic Image cherry-picked the best of the bunch and included them in the Series III models
• Separate Digital Effects in/out buttons for each channel
• Stereo Option: Channel 2 button allows you remove the second channel from this amp, to route it to second amplifier, for stereo use.
• AC Power On/Off switch with LED Indicator
• External Speaker Output (Neutrik Speakon), internal speaker is wired directly to the amplifier
• Detachable AC Input Connector with Built-in Fuse
• Dual voltage operation (115v/230v, 50/60 Hz) via external switch (comes with USA Cable; to use in other countries, you can source an IEC-C13 AC Cable, also commonly used for computer power supplies.)
• Lightweight- less than 20 lbs! with new Durable Molded Enclosure
• Molded Carry Handles
• Dust cover with cable pocket and shoulder strap included
• FIVE YEAR WARRANTY
  
  
  
  
  
  

Coda R Combo Amplifier - Series III

The Acoustic Image Coda R adds a second channel and an effects module to the Contra, 400 watts all in a package that's about foot tall and less than 20 pounds in weight...
• 400w • 11.5Hx15W (round) • less than 20 lbs.

Contra EX Speaker Cabinet (also for use with Coda R) Series III

The Acoustic Image Contra EX is the same 3-way cabinet that is used for the Contra and Coda combo amps. It can be used as an extension cabinet for either, or as a compact cabinet...
• rated at 250w • 11.5Hx15W (round) • less than 20 lbs.

Corus EX Series III Speaker Cabinet

The Acoustic Image Corus EX is the same 3-way cabinet that is used for the Corus combo amp. This compact speaker is optimized for guitar and other "non-bass" instruments......
• rated at 250w • 11.5Hx15W (round) • less than 20 lbs.

Hard Case for Series III Contra/Coda/Corus

The new Hard Case for the series III CodaR and Contra Combos. The solid, double-thick rotomolded case protects your investment and helps to keep it looking new...

Deluxe Mooradian Case for Contra/Coda R/Corus combo and EX Cabinets

MOORADIAN Custom PADDED CASE for the Series III Contra, Coda R, Corus and Contra EX/Corus EX.

H-Clamp Light Acoustic Guitar (and ABG) Microphone Mount

The H-Clamp is a very sophisticated adjustable instrument microphone mount. It places your favorite mic exactly where you want, for use both live and in the studio...