Mucho love here for the JVC speaks. I refurbed a pair of SK-1000ii's that I found in the SA for $20, they needed new foams and pots cleaned. They are heavy as and sound great
These are not mine, mine are nicer !
Blurb for the SK-1000 (not the ii) from HifiEngine -
The SK-1000 is our best and cleanest sounding speaker system in the JVC high-power line up. It uses three JVC designed and assembled speaker units, including a 12-inch woofer, 5-inch midrange and a 1-inch dome tweeter.
Special care has been given to the woofer for reproduction of realistic bass. Its features include a rigid low mass diaphragm, but even more important, a dome tweeter that covers the high frequencies is already famous for transparency and ideal wide dispersion.
All of these units are carefully phase aligned by the Phase Moire Propagation Technique, which means you'll get clean sonic images of musical instruments in your room.
No matter how much power you feed to the SK-1000, it doesn't lose its superb low distortion quality. In fact, it easily accepts the high peak input of 170 watts, while delivering an efficiency of 93dB and wide, flat frequency response across the 30 to 20,000Hz range.
There are two level controls on the front baffle of the SK-1000, one for treble and one for midrange. This lets you tailor the response of the system to suit your individual room acoustics.
The SK-1000's enclosure is sturdy, solid and uses panels of ideally dense materials, braced extensively inside for extra strength.
Specifications
Type: 3 way, 3 driver loudspeaker system
Frequency Response: 30Hz to 20kHz
Power Handling: 170W
Crossover Frequency: 1000, 10000Hz
Impedance: 8Ω
Sensitivity: 93dB
Bass: 1 x 300mm free edge cone
Midrange: 1 x 120mm cone
Tweeter: 1 x 24mm dome
Enclosure: bass reflex
Dimensions: 650 x 400 x 325mm
Weight: 24.2kg
Year: 1978