Acoustic Image Corus+ Combo Amplifier at Gollihur Music - Double Bass, Upright Bass, String Bass Specialists

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Amplifiers & Speakers: Combo Amps

Acoustic Image Corus+ Combo Amplifier

Manufactured by: Acoustic Image

Continental US - larger items may carry a partial shipping charge to AK, HI and PR

$1,389.00

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14 Day Trial Period on Acoustic Image Clarus, Focus, Contra, Coda R, & Corus amps!

New owners have a fourteen day trial period during which they may return the amp in new condition -- NO QUESTIONS ASKED! -- for a full refund minus our outgoing shipping cost. Returns must be preauthorized; restocking fee applies if unit is not returned in new condition.

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+. It also works wonderfully with keyboards - check out this review of the Corus (Dec 2008) from Keyboard Magazine!

The new Corus+ is the new replacement for the Corus Series III combo amplifier. The CORUS+ includes the new Cabrio Docking System, which allows you to remove the (Clarus+) head from the combo and use each component separately! It also includes an improved digital effects processor and double the wattage of the previous Corus, all while keeping the same famous AI "neutral" sound!

The Acoustic Image Corus bass amplification system was designed to accurately reproduce the sound of guitars and other stringed instruments like cello, violin/viola, harp, etc., as well as a long list of other instruments - using one small, easy-to-carry enclosure. Instruments with a stronger bass fundamental (acoustic-electric and upright bass, keyboards, electric piano, larger harps) would be better served by the lower-reaching sonic abilities of the Contra or Coda+.

Like the popular Coda+, 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+, 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+. 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 Corus sounds louder than the Coda+ at a given level setting and it sounds more forward. The trade-off is slightly less bass response. It is designed to better match the needs for guitar and other instruments that occupy the sonic space above basses. Many keyboard/piano/organ players have found that they prefer the voice of the Corus to the Coda or Contra as well, despite the extended range of most keyboards. 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 -- as with all Acoustic Image combos -- is flat frequency response across the spectrum, with extended, tight, well-controlled natural low-range sound. But the Corus has 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 800-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.

Acoustic Image was on my personal Bass Radar in the late 90's, when I first saw some buzz about this new down-firing amp. My first Contra arrived in 1999, and I took it to the NAMM 2000 show in Los Angeles, to demonstrate K&K Sound upright bass pickups in their booth. At one point guitarists Dieter of K&K and borrowed it, to see how his acoustic guitar pickups sounded through it.

It took me six hours to wrestle it back from them. The Contra was that good. And now, along with its many siblings, it's even better.

These combo amps were a real breakthrough when first developed by Dr. Rick Jones, a bass player (check out his CD at right for firm cred) as well as founder, and President of Acoustic Image, and they continue to get better with each generation.

The design and performance of the Acoustic Image Contra was -- and still is -- quite revolutionary. The lowest bass frequencies are omnidirectional, and we all know our acoustic instruments do not radiate only in one direction — their sound moves about the room. The ten inch down-firing woofer in the Acoustic Image combos spreads that sound around naturally, as our ears might expect. But that's only one of the differences between it and other amps, and there is still plenty of definition, and it's not as annoyingly directional as so many other amps.

These combos have a complement of drivers that results in a full range speaker cabinet. In addition to the woofer, you'll find both a five inch cone midrange and a dome tweeter, just as you'd expect to see in today's finest 3-way home stereo speaker systems. Plug your MP3 player in and be amazed at the result! Nice tight bass, real, uncolored sound.

The other key ingredient in Acoustic Image gear is the electronics. They have been designed to deliver the natural sound of your instrument, no artificial flavorings or colors. Please answer this question... do you want to hear your instrument or the amp??

Me, too. My specifications for an ideal sound is for a pickup/mic and amp to simply make my instrument sound bigger.

More Power!! (please insert your own Tim Allen Home Improvement TV show grunts) Yes, it can put out up to 800 watts. That said, the combos are not rock and roll amps — it's not going to compete with your 4x12 half stack! Yes, it can get quite loud, but the wattage is there to ensure smooth, clean response. The wattage is there so the energy is available to cleanly handle those peaks and percussive attacks, rather than that "squashed" sort of attack many amps often deliver when they hit the wall.

And if the combo isn't quite what you're looking for, check out the Clarus Heads, which are the same preamp with two different configurations - lots of players gig Acoustic Image Clarus or Focus heads along with a more convenitional and efficient speaker cabinet. The heads are designed for flat and natural response - again, hear your instrument, not the amp.

Features have been designed into the Corus to add flexibility for various playing situations. These include -- on each channel -- a parallel effects loop with a return level control, a selectable notch or high pass filter for feedback or “boominess” elimination (see explanation in features list below). Both channels have access to the newly updated digital effects section. You also get a balanced direct out with ground lift to allow connection to a mixing board for PA augmentation or recording. A redesigned built-in mechanism allows the cabinet to be tilted to better direct sound to the player’s listening position. For larger venues, the Corus EX extension cabinet is an ideal match.

Included with all of the Contra, Corus, Coda and EX models is a lightweight "dust cover" with shoulder strap and accessory pocket.

Made of lightweight vinyl, it covers the top and sides of the cabinet, with openings to allow access to the amplifier's integrated handles. It also comes with a carry strap which loops through the openings and the amp handles, allowing you to "shoulder" the amp. The cover is handy - it even has a small pocket for cables, tuners, and other small gigging accessories. But don't expect it to substitute for a case, as it offers only minimal "protection" from slight bumps and other minor hazards. If your gigging needs require something a little more protective, we have other options available separately. Check out the optional padded Mooradian case and the semi-hard case that may remind you of a heavier version of "clamshell" drum cases you've seen. Links to each case are in the Related Products, below.

The photo at left shows it with the cover on and carry strap ready for transporting. 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 unit from rain, and it does not cover the bottom of the cabinet.

Features:

Three-way Sealed Speaker System
10" Long-throw Low-frequency Woofer
5" High-frequency Driver
1" Tweeter (with On/Off Switch)
1000-Watt "Digital" Power Amplifier, 1000w @2 ohms, 800w @4 ohms (internal speaker is 4 ohms) higher power!
Two identical channels for any mix of instruments and microphones using 1/4" or XLR inputs
Input and Master Level Controls for each channel
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
UPDATED Digital Effects including reverbs, delay, and more
Separate Digital Effects in/out buttons for each channel
New Cabrio Docking System allows you to separate the amp and speaker components for separate use!
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
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 Durable Molded Enclosure
Molded Carry Handles
Dust cover with cable pocket and shoulder strap included
FIVE YEAR WARRANTY

$1,389.00

FAQs Associated With This Product

ACOUSTIC IMAGE COMBOS/SPEAKERS: What's the difference between the Contra, Coda, Corus and TEN²?
SPEAKON SPEAKER CONNECTORS: what are they and why are they used?