The Soprano by Jeff Bagby
A small driver, two-way kit using the fine drivers from SB Acoustics.
This kit came about at the request of Jeff’s brother who needed a small set of speakers. Jeff had used SB drivers in the past with great results and found the little 4″ units to be no exception. Read the build in the pdf link below this page.
This is a 4 Ohm system.

The full kit includes everything you need except the cabinet:
- 2 x SB26TCN, Neo tweeters
- 2 x SB12NRX25, Mid Woofers
- 2 x Crossover parts, with Audyn Q4 / NPE caps and specified Inductors
- 2 x HG Posts
- 2 x Port tubes
- 2 x 16ga Hook up wire
- Internal Damping
- All mounting screws
- Build plans
A Bare Bones kit is also available and includes:
- 2 x SB26TCN Tweeters
- 2 x SB12NRX25 Mid Woofers
- 2 x Crossover parts
- Build Plans
As always, substitutions of terminals, capacitors, etc. are welcome. If you have a favorite cap brand or like other terminals, we are happy to price the kit accordingly.
Not good at soldering? choose the “assembled crossover” option and we’ll build and test them for you.
Look for the complementing Subwoofer shortly.
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