Difference between revisions of "Tesla B4"
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| − | == | + | == Short description == |
| − | 4 | + | 4 track tape recorder mono |
| − | == | + | == Data == |
| − | ''' | + | '''General''' |
| − | * | + | * Manufacturer: [[Tesla]] |
| − | * | + | * Model: B4 |
| − | * | + | * Year of manufacture: ca.1966 |
| − | * | + | * Made in: ČSSR |
| − | * | + | * Colour: grey |
| − | * | + | * Dimensions (W/H/D): 315 x 300 x 120 mm |
| − | * | + | * Weight: 7.5 kg |
| − | * | + | * Original price approx: |
| − | ''' | + | '''Connections''' |
| − | '' | + | '''Inputs''' |
| − | *DIN 5 | + | *DIN 5 turntable 300mV/1,5MOhm |
| − | *DIN 5 | + | *DIN 5 Microphone 0,8mV/4kOhm |
| − | + | DIN 5 radio 1,6mV/4kOhm | |
| − | '' | + | ''Outputs'' |
| − | *DIN 5 | + | *DIN 5 radio 0,8V/10kOhm |
| − | *DIN 5 | + | *DIN 5 diode 0,5mV |
| − | *DIN 5 | + | *DIN 5 headphones 0,8 - 2,5V/0,5 - 4kOhm |
| − | *DIN | + | *DIN loudspeaker 4Ohm 3W/1,5% distortion factor |
| − | ''' | + | '''Technical Data''' |
| − | * max. | + | * max. coil diameter: 147mm |
| − | * | + | * drive: external rotor motor (like Pabst), primary belt to step pulley, friction drive to flywheel mass and bobbin plate |
| − | * | + | * heads: combi head, erasing head |
| − | * | + | * Tracks: 4 mono |
| − | * | + | * Tape speeds: 9.53, 4.76, 2.38 cm/s. |
| − | * | + | * Slip: |
| − | * | + | * Synchronization variations: at 9.53 = +/-0.2%, at 4.76 = +/-0.3%, at 2.38 = +/-0.5%. |
| − | * | + | * Pitch fluctuations: |
| − | * | + | * Overall frequency response: at 9.53 = 50Hz - 16kHz, at 4.76 = 60Hz - 8kHz, at 2.38 = 100Hz - 4kHz. |
| − | * | + | * Signal-to-noise ratio: |
| − | * | + | * Spurious Ratio: |
| − | * | + | * Distortion ratio: |
| − | * | + | * Equalization: |
| − | * | + | * Crosstalk attenuation: |
| − | * | + | * Cancellation attenuation |
| − | * | + | * Premagnetization and cancellation frequency: approx.70kHz |
| − | ''' | + | '''Special Equipment''' |
| − | * | + | * here, if available |
| − | == | + | == Remarks == |
| − | + | Other models of the same series:B41, B43a, B46, B47 | |
| − | == | + | == Pictures == |
| − | == | + | == Test reports == |
== Links == | == Links == | ||
| − | [[ | + | [[Category:Tape machines]] |
| − | |||
| − | |||
Latest revision as of 14:15, 4 April 2011
Short description[edit]
4 track tape recorder mono
Data[edit]
General
- Manufacturer: Tesla
- Model: B4
- Year of manufacture: ca.1966
- Made in: ČSSR
- Colour: grey
- Dimensions (W/H/D): 315 x 300 x 120 mm
- Weight: 7.5 kg
- Original price approx:
Connections
Inputs
- DIN 5 turntable 300mV/1,5MOhm
- DIN 5 Microphone 0,8mV/4kOhm
DIN 5 radio 1,6mV/4kOhm Outputs
- DIN 5 radio 0,8V/10kOhm
- DIN 5 diode 0,5mV
- DIN 5 headphones 0,8 - 2,5V/0,5 - 4kOhm
- DIN loudspeaker 4Ohm 3W/1,5% distortion factor
Technical Data
- max. coil diameter: 147mm
- drive: external rotor motor (like Pabst), primary belt to step pulley, friction drive to flywheel mass and bobbin plate
- heads: combi head, erasing head
- Tracks: 4 mono
- Tape speeds: 9.53, 4.76, 2.38 cm/s.
- Slip:
- Synchronization variations: at 9.53 = +/-0.2%, at 4.76 = +/-0.3%, at 2.38 = +/-0.5%.
- Pitch fluctuations:
- Overall frequency response: at 9.53 = 50Hz - 16kHz, at 4.76 = 60Hz - 8kHz, at 2.38 = 100Hz - 4kHz.
- Signal-to-noise ratio:
- Spurious Ratio:
- Distortion ratio:
- Equalization:
- Crosstalk attenuation:
- Cancellation attenuation
- Premagnetization and cancellation frequency: approx.70kHz
Special Equipment
- here, if available
Remarks[edit]
Other models of the same series:B41, B43a, B46, B47