I purchased these about a month ago on eBay for $340 – you can see the ad which is still on eBay. I have been wanting to add some “sparkle” to my Lowther drivers but quickly realized doing this really takes more knowledge (and patience) than I possess. Although they did add to the sound, my neuroses took over and I decided to instead buy a pair of Spatial Audio M3 Turbo S speakers, which are due here any day now. These have never been soldered and look new. Price is $200 including Paypal fees and shipping in US. Here is info from spec sheet: Overview High power handling and wide rage response frequency band .No impedance resonance. Driving force distributes in vibration surface with precision vibration chip which combines of heat-resistant Kapton? Membrane material and heat-resistant conducting electricity membrane, covering about 90% of the chip in 3-way Neodymium magnets. Rt2-pro has speedy transient behavior and high sensitivity. Linear phase response synchronizing tome delay characteristic improves positioning precision of reproduction. Highly efficient heat-dispel structure reduces the temperature of the vibration chip in working. Specifications Nominal Impedance (Z)(Ω) :
8
Nominal Power Handling (Pnom)(W) :
30
Sensitivity (2.83v/1m)(dB) :
99
Weight (M)(Kg) :
1.06
Magnet System :
Neodymium
Recommended Crossover Frequency(Hz) :
>2300Hz
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