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Piano & other acoustic keyboards

The C-ducer tape microphone is most widely used on the piano with over 15,000 systems sold. C-ducers are used in many venues from studios to churches, concert halls, cruise ship piano bars, jazz clubs and music festivals.

Both grand or upright pianos use two 8 inch (20cm) tapes, one being positioned towards the treble end of the piano soundboard, and one towards the bass end.  In the Professional Stereo C-ducer (CQS/8) the signal from each of the two mics is kept separate and provides a stereo feed.  In the Professional Mono C-ducer (CQ2/8) and the Gigster piano system (B2000/8), the signal from the two mics is combined for a mono feed.  

The Professional C-ducer range provides a balanced, line-level output, and the Gigster provides an unbalanced line out for an amplifier or stage mixer.

The Gigster range is powered by its own integral battery, providing many years of use without changing the battery, and the Professional range is 48 volt Phantom Powered.

Place C-ducer tapes on the piano soundboard closely following the diagram. The tapes should not cross either of the bridges since distortion may result. This should produce a clear, balanced quality sound. It is important that the Tapes adhere well to the surface of the soundboard, which should be free of dust before application of the Tapes.

For more detailed information, read this article by Dr. Andre Walton: Avoiding Problems in Acoustical Keyboard Amplification

Click Here to download

"From experience I would have to add that the separation they can provide would have to be good for studio or stage".

NZ Musician Magazine

“I personally engineered 90% of the bands and artists who appeared at Montreux. Without C-ducers the grand piano could not have been amplified at the volume required nor would it have sounded as natural and as dynamic as it did. Many thanks again.”

Chris Ridgway, Sound Engineer, Montreux Jazz Festival

“Very clean, dry, punchy, and plenty of bite - but without sacrificing the piano's naturally subtle response"

Abbey Road Studios

Smaller acoustic keyboard instruments

With smaller keyboard instruments such as the Harpsichord, Spinet, Clavichord and Celeste, the C-ducer tape Microphone is invaluable, giving full sound with these instruments which are conventionally hard to amplify and record. As the construction of these instruments varies experimentation is vital to achieve the best sound. Two 3 inch (8cm) tapes are used, stuck to the soundboard in a similar way to the piano. Once again insuring that the tapes do not cross the bridges.

C-ducer is available as an unbalanced, battery-powered option (B2000/3) or in balanced, 48 volt phantom- powered format for mono use (CQ2/3) or in stereo format (CQS/3) when the signal from both Tapes is kept separately..