Piano, Organ, and Keyboard/Replacing Hammond C3

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Question
My church is replacing an older Hammond C3 organ with a Roland keyboard.  
Our sanctuary seats about 150.  The current setup has the tone cabinet and power amps in a box built in the proscenium wall and a pair of smaller monitor speakers driven by a separate solid state preamp.
What should I use to replace the main speakers and electronics?  I'd prefer not to have any electronics in the speaker enlcosure.

Answer
Hello William,  Keyboards typically offer right and left stereo outputs.  These outputs are intended for recording or external amplification.  A basic stereo amplifier and some wide range speaker assemblies are all that would be needed to expand the keyboard's volume.  I have found amplifiers tend to be overstated when it comes to power output.  For that reason, I suggest using an amplifier with a hefty power rating (say 150 to 200 watts/channel) and connect speakers that are rated for at least the output power of the amplifier.  Also, be careful about adding additional speakers to an amplifier's output because you risk exceeding the minimum impedance, typically 8 to 4 ohms (two 8 ohm speakers in parallel = 4 ohms).  Dropping below 4 ohms will likely damage the amplifier.  

The speaker system used on the Hammond is typically quite different than what the Roland will use.  Not knowing what the present setup is, I recommend you not be tempted to use the old organ speakers.  You will stand a better chance of selling the C3 with its original speaker setup.  

Just in case you don't know, a Hammond C3 is the same as a much sought after Model B3 except in a church console.  I'm certain a Hammond enthusiast would love to have the C3 because B3's are getting harder to come by now days.

You can contact me at www.britson.com if you need further help.  

Piano, Organ, and Keyboard

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Thomas Britanyak

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I am a full time organ/piano technician who has been actively involved with the design, building, repair, maintenance and installation of organs and pianos for 35 years. I began as a keyboard instrument apprentice and hold degrees in music and electronics. If you need a piano's date of manufacture, please go to http://www.pianoexchange.com/howold.htm or http://www.bluebookofpianos.com/pianoage.html I am happy to answer musical or technical questions, however, I CANNOT offer appraisals on pianos or organs. Please do not ask what an instrument is worth. For this service please contact an experienced local appraiser or try the following links: https://mmm1100.verio-web.com/blueb1/appraisal.html or http://www.57piano.com/questions.htm

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I am a full time organ/piano technician who has been actively involved with the design, building, repair, maintenance and installation of organs and pianos for 35 years. I began as a keyboard instrument apprentice and hold degrees in music and electronics.

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I am a full time organ/piano technician who has been actively involved with the design, building, repair, maintenance and installation of organs and pianos for 35 years. I began as a keyboard instrument apprentice and hold degrees in music and electronics.

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