Tesla B4 specifications

Category : Tape machines

Brand : Tesla

4 Track Tape recorder Mono

General

Connections Inputs

Outputs

Tech nical data

Special equipment

Other models of the same series:B41, B43a , B46, B47

• 1 Short description
• 2 data
• 3 comments
• 4 pictures
• 5 Test reports
• 6 Links

• Manufacturer:Tesla
• Model: B4
• Years of construction: approx.1966
• Manufactured in: ČSSR
• Color: grey
• Dimensions (W/H/D): 315 x 300 x 120 mm
• Weight: 7.5kg
• Factory price approx.:

• DIN 5 Turntable 300mV/1.5mOhm
• DIN 5 Microphone 0.8mV/4kOhm
• DIN 5 Radio 1.6mV/4kOhm

• DIN 5 Radio 0.8V/10kOhm
• DIN 5 Diode 0.5mV
• DIN 5 Headphones 0.8 - 2.5V/0.5 - 4kOhm
• DIN Speaker 4Ohm 3W/1.5% Total harmonic distortion

• max. Coil diameter: 147mm
• Drive: external rotor motor (like Pabst), primary belt to the step pulley, friction wheel drive to the flywheel and coil plate
• Heads: combi head, extinguishing head
• Tracks: 4 Mono
• Belt speeds: 9.53, 4.76, 2.38cm/s
• Slip:
< li>Synchronisation fluctuations: at 9.53 = +/-0.2%, at 4.76 = +/-0.3%, at 2.38= +/-0.5%
• Pitch fluctuations:
• Total frequency response: at 9.53= 50Hz - 16kHz, at 4.76= 60Hz - 8kHz, at 2.38=100Hz - 4kHz
• Signal-to-noise ratio:
• External voltage ratio:
• Total harmonic distortion:
• Equalization:
• Crosstalk attenuation:
• Cancellation attenuation
• Pre-magnetization and cancellation frequency: approx.70kHz

here, if available

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