NATIONAL RS-457 Stereo Cassette Recorder
1 in stock
NATIONAL RS-457
Brand NEW
FUTURES:
- Manufactured Date 1977 Of July
- Fully Automatic Stop Mechanism
- 2-Way 4-Speaker System
- “Stereo Wide” System
- Long-Life Permalloy (L/H) Head
- Chrome Tape Can Be Used
- Perfect Variable Monitor System
- BASS TREBLE Adjustment Knob
- Mixing Circuit Adopted
- 3 Power Supply Methods
- AFC/BEAT PROOF Switch
- Sleep Function
- Built-In Condenser Microphone
1,199.00€
1 in stock
In the late 1970s, as boomboxes were rapidly becoming more stereo, various manufacturers were releasing masterpieces with a variety of distinctive features. While there was a trend to differentiate products based on functionality and performance, I think the RS-457 was the leader in terms of design. Its design is instantly recognizable as it is unlike any boombox made by the company, let alone any made by other companies. Let’s take a closer look at the design’s features.
No matter which manufacturer, the main colors for the body of a boombox were black or gray, but most used silver for the upper control panel, cassette holder, or speaker grill.
The RS-457 uses almost no silver or accent colors, and is all black for a tough look. It’s a manly color scheme.
ELECTRIC
Power Source: AC 100V (50/60 Hz) DC 9V (6 AA Batteries) Car Battery 9V (Car Adapter RP-915 Sold Separately)
Power Consumption: 13 W
Practical Maximum Output: 1.5 W × 2 (EIAC Distortion Rate 10 %)
Battery Life: Duration: Approx. 6 Hours (Using National “Neo High Top”) 12 Hours Of Continuous Recording.
Transistor Used: 2SC763CD (1), 2SC738CD (1), 2SC710C (1), 2SC1383RST (1), 2SC1312YG (2), 2SC828RS (6). 2SC945Q (4), 2SB324GHI (4), 2SC1317RS (2), 2SC1383RST (1)
Use 1C (4 Stones): AN260(1), M5132P (1), M5130P (1), M5138P (1)
Diodes Used (18 Diodes) SC15 (1), OA90Z (10), 20A90(2), MZ207B (1), KB265A (1), 1S1211(2), QVDSRIK1 (1)
Rectifier Used (2 Transistors): 10DC1 (1), 10DC1R (1)
Thermistor Used (2 Pieces): QVM800B (2)
Head Used Motor: Recording/Playback Head (1), Erasing Head (1)
Motor Used: DC Motor (Mechanical Governor Type(Speed Adjustable))
Speaker: 10 cm Round Dynamic Speaker 8 Ω (2), 5 cm Round Cone Speaker 8 Ω (2)
Recording Method: AC Bias Method (70 kHz)
Deletion Method: AC Cancellation Method
Recording Track: 4-Track 2-Channel Stereo
Monitor Method: Perfect Variable Monitor System
Level Display: 2 Individual Types (Level/Battery Check, Level/Tuning)
Tape Speed 4.8 cm/sec
Frequency Response: 50 ~ 10,000 Hz (NORMAL) 50 ~ 13,000 Hz (CrO2)
Wow And Flutter: Less Then 0.15 %
Signal-To-Noise Ratio: 40 dB or more
Fast Forward/Rewind Time: 120 Seconds Or Less (Using C-60 Tape)
Recording/Playback Time: 1 Hour Round Trip (Using C-60 Tape)
Mixing Function: Recording And Playback Possible
Input Terminal: MIC Terminal, 2 Circuits, 2.2 Ω -73 dB, 0.22 mV. (Recommended Microphone RP-3510E)
LINE IN Terminal 2 Circuits 220 kΩ -30 dB, 30 mV
Output Terminal: EXT SP Terminal 2 Circuits 8 Ω
LINE OUT Terminal 2 Circuit Load Impedance 5.6 kΩ
Headphone Jack 2 Circuits 8 Ω
Recording/Playback (DIN) Terminal: Based On REC/P.B CES Standards
RADIO SECTION
Reception Frequency: FM 76 ~ 90 MHz AM 525 ~ 1605 kHz
Intermediate Frequency: FM 10.7 MHz AM 455 kHz
Receiving Sensitivity: FM 3 μV/m/50 mW(Max) AM 100 μV/m/50 mW(Max)
Weight: 5.4 kg (Including Batteries)
Dimensions: 377 mm (Width) x 246 mm (Height) x 134.5 mm
ACCESSORIES
Power Cord (QFC1064) x 1
Dry battery (SUM-1D) x 6
Cassette Tape (QFT6TCCNDEZ) x 1
Fun Pack Ass’y (QFF0236) x 1
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