Technical Details
Brand: Bell
Model:RT 75
Category:Vintage
Application:Consumer
Electronics:Tube
Equalization:NAB
Country of Manufacture:USA
Release dates:1956 - 1959
Tracks:1/2 Rec/PB
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Voltage(s): 110-120v
Frequency Response:(all 3 dB): 7½ ips: 30Hz - 12kHz
Wow and Flutter:0.3% at 7½ ips
Signal-to-Noise Ratio:better than 30 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
Additional Details
Description
Manufactured by Bell Sound
Systems, Columbus Ohio.
This was a half-track mono machine with three playing speeds, a six inch
by nine inch internal speaker and a four watt output with less than 5%
distortion.
Two heads were employed and the transport was of a three-motor design,
rugged and uncomplicated.
At 7½ ips, wow and flutter was less than 0.3% and frequency response
was a modest 30 to 12kHz.
Additional Info
Total harmonic distortion: less than 5% at maximum indicated record level / Bias frequency: 60kHz / Audio output power: 4 watts / Inputs: microphone and radio / phono / Outputs: external speaker and high impedance external amplifier / Speaker(s): 6″ x 9″ internal / Weight: 35 lbs (15.9 kg) / half-track mono