Contra design Goals

The Contra integrated amp and loudspeaker system was designed to accurately reproduce the sound of all acoustic and electric instruments without the size and weight that has traditionally be associated with high quality amplification. Flat frequency response coupled with an extended, tight, well-controlled bass sound and clarity of reproduction are its priciple sonic characteristics. Its omnidirectional output of frequencies below 800 Hz allows instruments amplified by the Contra to be easily heard by other musicians across the bandstand.

Trade offs are inherent in the design of any audio system. In order to have a compact enclosure while maintaining accurate reproduction across a broad spectrum of frequencies, a compromise was made in the absolute volume at which the Contra can play at the lowest frequencies. Even so, the high effciency of the Contra's switch mode power amp provides more than enough volume for reproducing instruments in a noisy club or big band. Reaching the SPL required in a high volume situation may require an extension cabinet or augmentation by a larger house PA system.

Features have been designed into the Contra 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 built-in lifter mechanism 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, an optional padded gig bag with shoulder strap or a hard shell travel case make the unit convenient for the travelling musician.

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