EWI Gig Rig

EWI Gig Rig


Ted Keys

Project Category:
Portable Speakers

Project Level


Project Time:

8-20 Hours

Project Cost:



Project Description:

I built a gig rig for my electronic wind instrument. I play this in an amateur Big Band, usually baritone saxophone, but I can switch to other instruments to fill in for a no-show.

Design Goals:
The design criteria for this build are compact, self-contained, battery powered, as loud or louder than a real wind instrument, and little or no setup required ie. open it, turn it on, and play.

Driver Selection:

2 ea. Boss P55.4C 4ohm speakers in parallel.

Enclosure Design


Crossover Design:


Tips & Tricks:



The compact design does not allow for optimum speaker size / configuration or enclosure design. However the two 5 1/4″ full range speakers do a very good job. I may explore a full-range speaker with 5 1/4″ woofer /crossover in the future to improve the low end response.

About the Designer:
 I’ve been designing industrial measurement equipment for 39 years for Delta Controls Corporation.

Project Parts List:

N/AYamaha VL70-m synthesizer1
325-512Dayton Audio KAB-100Mv2 100W Class D amplifier board with Bluetooth1
325-212Dayton Audio LBB-5v2 5×26650 lithium battery module1

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