The KSI 12-1 Subwoofer is the ideal choice for extended
low frequency reproduction. Uses include special effects, AV
theaters and installations requiring high output low frequency
reproduction in a compact enclosure. Users will be impressed
with the solid bass response and high dynamic range.
The KSI 12-1 features our high power 1258-8 12"
cast frame transducer. We designed this driver to produce very
smooth extended low frequency reproduction in a modest sized
optimally vented enclosure. The 1258-8 features a 2" high
temperature voice coil and powerful magnet structure, making
the 12-1 highly efficient at converting electrical energy
into acoustical energy. To further enhance the bass response,
we designed a heavily braced and stiff enclosure, essential
to fully realize the performance of our 1258-8 transducer. Dual
gold plated binding posts enable heavy gauge wire to be easily
connected to the 12-1. Heavy wire from the power amp
to the loudspeaker helps to maintain a high damping factor,
resulting in an improvement in overall bass response. For optimum
performance, the 12-1 should be connected to a high quality
power amplifier and an active crossover. We recommend a crossover
frequency of up to 250 hz.