Czech klangfilm box cinema speaker box from the Meopta OP 16 projector (16mm film) approx year 1960s the cable is MISSING, ONLY the original bakelite speaker connector dimensions 50 x 40 x 25 cmused speakers:Two piece (1 Pair): TESLA 2AN 633 50 AlNi Paper fullrange speaker 8On of newer Full Range TESLA-KLANGFILM SPEAKERS Made in Czechoslovakia in 1955 - 1961 Very rare full range speakers with Heavy AlNi dispersed magnet. These speakers do not require the rich description experts of them well know. The speakers are tested, they exellent vintage sound. Are in good condition. Please have a look to the pictures for details. I illustrate this auction - real photos that belong to me, only the last photo is only illustrative. Speakers Dimensions [mm]: 200 Depth [mm]: 90 Z Impedance [ohm]: 5 Ohm (measured 4 ohm) Nominal power [W]: 3 Frequency [Hz]: 50 - 8000 ? Sensitivity [dB]: 94 ?Resonance [Hz]: 60 Weight [kg]: 1.5 Type of magnetic system - AlNi (Not normally badly stated AlNiCo) Magnet Dimensions (mm) 65 x 40 As far I know these speakers are designed for open baffle applications and are suitable especially for low power tube amplifiers, where their high sensitivity excell. Speakers are removed from two identical units with single-ended tube amplifier and then used only with low power single-ended tube amplifier. Because of its opened magnetic system this speakers should be used with a dust protecting cloth. In my opinion the speakers sound excellent, they have low soft bass, clear mid and high frequencies (in my opinion these speakers can play surprisingly high frequencies). Most of the items are 50 a 60 years old electronics, so it not possible to give any warranty on it ! Worldwide shipping. Please ask for exact shipping costs before submitting your offer (Hong Kong, Canada, Portorico....) Delivery to Japan and South Korea is seamless (approximately 21-30 days) Only bid in the auction for serious buyers! You only pay for the transfer costs. Im delighted to answer all your questions and Ill tell you the exact cost of the transfer. Guarantee of a very good 100% professional package.