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Technics RS-M250 cassette deck


 Technics RS-M250

A new cassette deck from Technics, the RS-M250 , is packed with a tremendous variety of convenience and handling features. And, as with all technics cassette decks, its performance represents excellent value – the RS-M250 is capable of making recordings which are virtually indistinguishable from the original program source. In fact, on a price/performance basis, Technics products traditionally have compared quite favourably with those of our competitors. The new Technics cassette deck line is no exception – it offers outstanding value at all price levels.

Versatile Microprocessor
Simply turning on the power will show you that the RS-M250 is different from other cassette decks . notice, for example, the digital tape counter. The readout is large and bright, and can be seen from across the room. One count of the counter corresponds to 2 rotations of the reels. Yet it is more accurate than many similar devices because it includes 4 fractional divisions which break down the readout more precisely – half-turns of the take-up hub can be accurately measured. But the readout is only part of the story.
Suppose you want to repeat a track on the tape, or refer back to any point on the recording. It’s easy with the RS-M250 and its microprocessor. The memory has four settings; “stop”, “off”, “play”, and “repeat”/ in the “repeat” mode , you simply press the reset button at the point on the tape you want to recall. Then, a touch of the rewind button will return the transport to this spot, where it will automatically switch into play. If allowed to continue and play the remainder of the side, the microprocessor will then instruct the transport to return to “000” where, once again, playback begins. “Play” works the same way, except that it doesn’t repeat, and “stop” simply returns the tape to the “000” point without beginning playback. For checking recordings, or finding an exact point on the tape for future reference, the RS-M250 is a very convenient deck at a reasonable price.

Effortless, Error-Free Mode Changing
The transport controls are logic-controlled switches. There’s no need to use the stop button when changing modes – just go directly into any mode (except record), including rewind, fast forward, and play. And when recording, a touch of the record button also engages both the play and the pause mechanisms automatically – then just touch the play button to begin recording. Thus, you avoid the difficulties and inconvenience of having to engage all these controls separately and manually.
If you want even more convenient operation, use the optional RP-9645 remote control module. You can control all transport functions, plus record muting, from the comfort of your listening position. There is even a convenient front panel input jack for connecting the remote control unit; when not in use, a special cover protects the jack from dust and impurities.

Simple-to-Use Features
We believe that convenience features are worthwhile only if they are easy to use – all the RS-M250’s features can be engaged and used with a minimum of effort. For example, we provide a switch which allows the use of an external timer, and the hook-up is extremely simple – the entire operation can be controlled from the front panel. The same point of view explains the door on the cassette well.  It is removable for easy access to the heads for examination or cleaning. No bolts or screws – the door simply slides into place. As you can see, the RS-M250 is designed for simple operation of all functions.



Performance
Of course all the features in the world aren’t worth much if the deck lacks good basic performance characteristics. Fortunately, the RS-M250’s performance is superb, particularly in light of its modest price tag. A glance at the spec table will demonstrate our devotion to quality. And the tapes which you make with the RS-M250 will sound consistently clean, crisp, realistic, and natural. We have also included the necessary extras to ensure this excellent performance undervirtually any circumstances.

Meters
For example, our FL peak reading meters employ a peak hold readout – this means that peaks are retained on the meter for 2 seconds. Then the meters automatically reset until the next peak comes along. The 2 color readout clearly indicates the 0 dB point, so you can be sure that the recording level will always be accurate. Result? Tape recordings with low noise, low distortion, and superb fidelity.

Tape Selector Switch
Naturally, we have included a selector switch to set bias and equalization for metal tape , the latest technological advance in the cassette medium. This formulation also necessitated an improvement in the saturation flux density of the recording head itself – our improved SX record/playback head yields exemplary performance with any type of tape. The Sendust formulation also assures a long life for the head with only normal routine maintenance.

FM Recording
Recording a program from an FM signal source will also yield a very high quality recording. The front panel MPX filter switch removes the carrier pilot signal from the tape input, thereby avoiding the distortion associated with this signal.
The Technics RS-M250 – an excellent combination of fine basic performance and the features to make the deck flexible enough for a wide variety of applications. Plus, it includes something which has become a Technics tradition – outstanding value for the money.

Other Features:
2 motor drive system – one for driving the capstan and another powers the reels and the head block during transport mode switching. This system contributes to low wow and flutter and good reliability.
Input selector switch – allows you to choose between “line” and “mic” inputs. If “mic” is selected, you can utilize the 2 front panel microphone jacks.
Dual concentric input level controls – friction coupled knobs, for adjusting one channel at a time, or both together.
Output level control – useful for matching the volume output of the deck to that of your tuner and turntable, so there’s no need for repeated adjustments in volume



Specifications
Track System:  4-track, 2-channel stereo recording and playback
Tape Speed:  4,8 cm/s (1-7/8 ips)
Wow and Flutter: 0,04% (WRMS)
Frequency Response
Metal Tape :  20 – 20,000 Hz  [30 – 17,000 Hz  ± 3 dB ]
CrO₂/FeCr Tape :  20 – 18,000 Hz  {30 – 16,000 Hz  ±3 dB ]
Normal Tape :  20 – 17,000 Hz  [30 – 15,000 Hz  ±3 dB ]
Signal-to-Noise-Ratio: 
Dolby NR In :  67 dB  (above 5 kHz)
Dolby NR Out :  57 dB  (signal level =max recording level, CrO₂/FECr type tape)
Fast Forward and Rewind Time:  Approx. 80 sec. with C-60 cassette tape
Inputs Sensitivity/Impedance
Mic :  0,25 mV/50 k Ω  (applicable microphone impedance 400 Ω  – 10 k Ω )
Line :  60 mV/ 47 k Ω 
Outputs Level/Impedance
Line :  700 mV/3 k Ω  or less (load impedance 22 k Ω  over)
Headphone :  85 mV/8 – 125 Ω 
Bias Frequency:  85 kHz
Motors 
1 electronically controlled DC motor for capstan drive
1 DC motor for reel table drive
Heads 
1 SX (Sendust  Extra) head for record/playback
1 double gap ferrite head for erasure
Power Requirements:  AC 120 V, 50/60 Hz
Power Consumption:  20 W
Dimensions (W x H x D): :  430 x 119 x 293 mm (16-7/8” x 4-3/4” x 11-1/2”)
Weight:  5,1 kg (11 lbs 3 oz)

Technics RS-B665 cassette deck

Technics RS-B665

Quartz Direct Drive Stereo Cassette Deck
the RS-B665 direct drive cassette deck clarifies the Technics technological lead in this realm. The motor uses an improved planar opposed design for its amazingly high torque while individual balancing of each flywheel prevents torque ripple. For precise servo control, the RS-B665 digitally compares the motor’s FG pulse to a quartz reference frequency. This direct comparison greatly improves rotational precision. So musical details come through in their original pure state.

2-Motor Tape Transport
A division of labor results in greater reliability of the tape transport mechanism. The high-torque DD motor drives the critical capstan, while a second motor drives the supply and take-up reels. Microprocessor full-logic control coordinates motor activity for smoothly integrated task performance.

Linear Magne-Field Class AA Circuit
Located after the recording amp. The Linear Magne-Field Class AA circuit overcomes the typical non-linearity occurring during electromagnetic transduction in the tape heads. The key is a refinement of the Technics Class AA circuit technique which prevents phase shift and avoids loss of mid-to-high frequency gain caused by head-coil inductance.

Dolby HX pro
HX Pro extends the headroom of virtually any tape, allowing it to record more high frequency information without overloading and causing distortion.

PXS Capacitors
Developed specially for improved sound quality. PXS capacitors are employed in various locations in the deck circuitry, including the power supply. This new technology helps preserve the fidelity of the original audio signal

Bias Fine Adjustment
You can “fine tune” the recording bias to maximize performance of your favorite tape formulations (Normal, cro2)

APRS (Advanced Precise Rec Level System)
Now APRS simplifies location of the ideal recording level. Since the meters hold the highest peak reached in your source program, you simply adjust the rec-level knob until the meters indicate the optimum setting. Great for use with the peak level search function in Technics CD players.

Dual-Range Peak-Hold Meters
For fine adjustments of recording level you can switch the meter range so that it indicates a range from -7 dB to +8 dB in 1 dB steps (instead of the usual -30 dB to +16 dB )

Linear Electronic Counter with memory Stop/Repeat
This 4-digit display shows elapsed tape time in minutes and seconds. Or you can switch it to work as a 3-digit counter. In whichever counter mode, you can have the tape stop automatically at the “00:00” or “000” position. Repeated play is also possible

More Valuable Features
microprocessor-controlled feather-touch operation
Phase Compensation Circuitry (PCC) in playback amp.
Dolby B-C NR systems
MPX filter on/off switch
Non-resonant TNRC base
Large insulating feet


Specifications 
Deck System:  Stereo cassette deck
Track System:  4-track, 2-channel
Heads
Rec/Play :  Permalloy head
Erasure :  Double-gap ferrite head
Motors
Capstan Drive :  Quartz direct drive DC motor
Reel Table Drive :  DC motor
Recording System:  AC Bias
Bias Frequency:  80 kHz 
Erasing System:  AC erase
Tape Speed:  4,8 cm/sec (1-7/8 ips)
Frequency Response: 
Normal :  30 Hz  – 16 kHz (± 3 dB ) [20 Hz  – 16 kHz  (DIN)]
CrO₂  :  30 Hz  – 16 kHz (± 3 dB ) [20 Hz  – 17 kHz  (DIN)]
Metal  : 30 Hz  – 18 kHz (± 3 db) [20 Hz  – 18 kHz  (DIN)]
Signal-to-Noise-Ratio:  (signal level=max recording level, CrO₂ type tape)
Dolby C NR On :  74 dB  (CCIR)
Dolby B NR On :  66 dB  (CCIR)
Dolby NR Off :  56 dB  (A weighted)
Wow and Flutter:  0,05% (WRMS) ± 01,15% (DIN)
Fast Forward and Rewind Time:  appox. 90 sec C-60 tape
Input Sensitivity/Impedance:
MIC :  0,25 mV/400 Ω  -10 k Ω 
Line-IN :  60 mV/47 k Ω 
Output Voltage/Impedance
Line Out :  400 mV/800 Ω 
Headphones :  125 mV/8 Ω 
General
Power Consumption:  21 W
Power Supply:  AC 50/60 Hz , 240 V
Dimensions (W x H x D):  430 x 135 x 290 mm
Weight:  4,9 kg (10,8 lb)

 

Toshiba SS-47 loudspeakers


3-way concave speaker system
3-step tweeter/mid-range tone control
Terminals for electronic cross-over multi-channel system
Natural walnut cabinet with removable grill panel

Specifications
Enclosure:  Infinite Baffle type
Mounted Speakers:
Woofer :  300 mm (12") concave
Mid-range :  120 mm (5") concave
Tweeter :  25 mm (1") dome
Frequency Range:  35 - 20,000 Hz
Crossover Frequency:  700 Hz (Low/Mid-range);  7,000 Hz (Mid/High)
Power Handling Capacity:  50 W Max.
Impedance:  8 Ω
Sensitivity:  93 dB /IEC
Fundamental resonance Frequency:  60 Hz
Timber Control:  Tweeter/Mid-range 3-step ±3 dB
Multi-amp. Connection:  2 & 3 way
Front Panel:  removable 
Dimensions (W x H x D):  400 x 680 x 330 mm (15-3/4" x 26-3/4" x 13")
Weight: 15 kg (33 lbs)

Toshiba SS-37 loudspeakers


3-way speaker system
3-step tweeter/midrange tone control
Terminals for electronic cross-over multi-channel system
Natural walnut cabinet with removable grill panel

Specifications
Enclosure:  Infinite Baffle type
Mounted Speakers:
Woofer :  200 mm (8") concave
Mid-range :  120 mm (5") concave
Tweeter :  25 mm (1") dome
Frequency Range:  40 - 20,000 Hz
Crossover Frequency:  700 Hz (Low/Mid-range);  7,000 Hz (Mid/High)
Power Handling Capacity:  40 W Max.
Impedance:  8 Ω
Sensitivity:  92 dB /IEC
Fundamental Resonance Frequency:  65 Hz
Timber Control:  tweeter/Mid-range 3-step ±3 dB
Dimensions (W x H x D):  342 x 590 x 295 mm (13-7/16" x 23-1/4" x 11-5/8")
Weight: 10 kg (22 lbs)

Toshiba SS-27 speakers


2-way speaker system
3-way high frequency level control
Mellow walnut cabinet with removable grill panel

Specifications
Enclosure:  Infinite Baffle type
Mounted Speakers:
Woofer :  200 mm (8") concave
Tweeter :  25 mm (1"0 dome
Frequency Range:  45 - 20,000 Hz
Crossover Frequency:  7,000 Hz
Power Handling Capacity:  30 W Max.
Impedance:  8 Ω
Sensitivity:  93 dB /IEC
Fundamental resonance Frequency:  85 Hz
Timber Control:  High 3-step ±3 dB
Dimensions (W x H x D):  300 x 500 x 252 mm (11-13/16" x 19-11/16" x 10")
Weight: 6 kg (13- 1/4 lbs)

Toshiba PT-490 cassette tape deck


 Toshiba – Now you can record on a Dolby cassette deck for 2 straight hours without flipping the tape.
Recording Beethoven’s  4th, 5th and 6th on one continuous taping. Or playing a two hour tape of The Beatles without even being in the same room. Or catching yourself in duet with Brubeck and not having to stop flip the tape. Well, if your cassette deck is a Toshiba PT-490 with the automatic reverse feature it’s easy.
Just set the Mode dial and the machine knows exactly what you want it to do. Whether you want it to record one side of the tape and then stop. Or play and turn itself off. Or record both sides of the tape for two uninterrupted hours. Or play back the same tape indefinitely. The machine does it all for you. And it does it automatically.
In addition to reversing its own tape, the PT-490 also gives you outstanding performance and sound. That’s because it comes with Dolby noise reduction. Mechanical auto shut-off. Separate record and playback volume controls. Two large, illuminated VU-meter. And a bias selector switch for normal, hi-fi and CrO₂ tape. And it’s one more example of the fine craftsmanship that goes into all Toshiba products.

Stereo Cassette deck
Features
Dolby noise reduction for improving Signal-to-Noise-Ratio as much as 10 dB
Mechanical automatic shut off prevents tape and mechanism damage
Tape counter for easy and simple tape indexing
3-step tape selector permits suitable bias level and appropriate frequency compensation for any kind of tape
Push-to-start/push-to-release type pause-control for recording level preset, preventing waste of tape when recording
Playback volume control gives suitable output level to any amplifier
Large and illuminated level-meter for easy monitoring of level
Automatic reverse system


Specifications
Usable Tape:  Compact cassette
Tape Speed:  4,8 cm/s (1-7/8 ips)
Track/Channel :  4-track / 2-channel stereo
Bias and Erasure:  AC 85 kHz
Input Jack:  Microphone, Line-input, DIN
Output Jack:  Line-output, Stereo headphone, DIN
Motor:  4-pole synchronous motor
Controls:  Slide volume (REC, playback), tape selector (Normal, HiFi, Special), mode selector (Non-reverse, reverse, repeat), power switch, Dolby system switch
Operations:  Piano type push button (reverse, REC, REW, Play, F.F., Stop, Cassette-up, pause)
Auxiliary Device:  Auto-reverse, auto-shut off, Dolby noise reduction, lighted 2-VU meters, 3-digit tape counter
Performance
Output Level/Impedance:  0 - 1 V/ 2 k Ω
Frequency Response:  30 - 15,000 Hz
Tape Speed Tolerance:  ±1%
Wow and Flutter:  0,1% WRMS
CrossTalk:  60 dB
Channel Separation::  35 dB
Signal-to-Noise-Ratio:  50 dB or 60 dB (with Dolby noise reduction) at 10 kHz, 50 dB or 55 dB at full spectrum
Erasure:  65 dB
Input Level/Impedance
Line-in :  80 mV/680 k Ω
DIN IN :  0m,56 mV/5 k Ω
Mic:  0,56 mV/ 10 kΩ
FF Time:  105 sec. (C-60 cassette)
Rewind Time:  105 sec. (C-60 cassette) 
General
Power Source:  AC 100/120/220/240 V, 50 or 60 Hz
Dimensions (W x H x D)::  425 x 140 x 290 mm (16-7/8" x 5-1/2" x 11-1/2")
Weight:  8 kg (18 lbs)
Accessory:  Patch cord, C-30C pre-recorded cassette,