Category:Mid High Fidelity (most Japanese recorders fall into this category)
Country of Manufacture:USA
Release dates:1964 - 1967
Speeds: 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Stereo
Frequency Response:(all ±3 dB): 7½ ips: 40Hz - 18kHz
Wow and Flutter:less than 0.25% at 7½ ips and 0.4% at 3¾ ips
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
Described by Lafayette as ‘A Complete Recording Studio in One case’ , the RK-155 was the full recorder version of the RK-140 tape deck.
It was a quarter-track stereo machine with two speeds (7½ & 3¾ ips). three heads (with Mu-metal shielding). single 4-pole air-cooled induction motor with belt-drive for flutter-filtering. sound-on-sound. automatic tape stop. two 4 x 6″ wide-range speakers and a hybrid construction using 4 transistors (preamplifiers) and 7 tubes (main amplifiers & bias).
Price when new was $169.95 complete with two dynamic microphones, simulated leather case, patch cords and empty 7spool.
Stereo separation: 45dB or better / Bias & erase frequency: 80kHz / Fast wind time: less than 4 minutes for 7″ reel (1200ft) / Inputs: microphone, phono / Output: extension speakers, external amplifier / Audio output: 1.5 watts per channel / Speakers: two 6 x 4-inch / Transistor / tube complement: seven tubes and four transistors plus a full-wave rectifier / Dimensions: 15.75 x 7.5 x 11.25 inches (400 x 191 x 286 mm) / Weight: 34 lbs (15.45 kg) / quarter-track stereo