Have you already built the Ellam FLEX 2-way and want to move on with the electronic crossover version, the path is simple. Build the bass cabs and buy the bass drivers.
Should you also want to try the passive version, buy the 4 ohms bass drivers as only a crossover for this version will de developed.
Scan-Speak D3004/660000 or R3004/662000 or D2604/833000 or R2604/833000.
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