Infinity RS4

[KraftwrkTrbo]

I like dome speakers. But normally in a 4 way (so a smaller conventional cone can handle the low/mid range, leaving the larger dome to handle the mid/high).

If dome for midrange in a 3 way, I would like to see smaller woofer so they can cross over to the mid at somewhat higher frequency.

a) Does anyone the cross over frequencies for the RS4?
b) How do they SOUND?

And in this context: crossover and drivers for Kappa 8 and 9?

 

[swechsler]

A great reference for vintage Infinities is the infinity-classics.de website.

a: http://www.infinity-classics.de/models/Reference-series-1+b-2-10+A+B-1981-86/index-Reference.htm
b: excellent

Kappas: http://www.infinity-classics.de/models/Kappa-series-1987/index-Kappa.htm

 

[KraftwrkTrbo]

Kappa 9 info below. Crossover stated: 80, 800. 4500. But that does not seem right. a) crossing over to the small 5" 'mid bass' at 80 seems strange. b) the crossover shows paths for woofers, mid bass (small cone), midrange (large dome), (rear tweeter emit), low tweeter (emit), high tweeter (c emit). So there are one or more crossover frequencies missing.

Note: just found another source adding 10k as crossover for the super emit.

SPECIFICATIONS RS 9 Kappa INFINITY SYSTEMS INC., 250 Crossways Park Drive, Woodbury, New York 11797 REV A 6-98 RS 9 Kappa Series 4-Way Speaker System Nominal Impedance: 4 to 6 ohm Power Rating: 60-340 watts RMS Efficiency: 102 dB SPL @1 watt, 1 meter Crossover Frequencies: 80Hz, 800Hz, 4500Hz Frequency Response: 29Hz-45kHz +/-3dB ACOUSTIC & ELECTRICAL SPECIFICATIONS: 1x - SEMIT Supertweeter 1x - EMIT Tweeter 1x - 3" Edgewound Voice Coil Polydome Midrange Driver 1x - 5" Polypropylene/graphite Diaphram Polygraph 2x - 12" Cast Frame , L/C Tuned Woofers Dimensions: 59.5"H x 21.5"W" x 8"D m(H) x 54.6cm(W) x 20.3cm(D) Cabinet Not Sold Base #659-3261 Grille #NLA Crossover #015-3254-D Binding Post #528-3238