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Showing posts with label cassette. Show all posts
Showing posts with label cassette. Show all posts

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 PT-470 cassette deck


 Stereo Cassette deck PT-470
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


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), power switch, Dolby system switch, Dolby system switch
Operations:  Piano type push button (REC, REW, Play, F.F., Stop, Cassette-up, pause)
Auxiliary Device:  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, 

Cybernet SDC-80 cassette deck

SDC-80 Dual Cassette Deck - The Slimline Series SL-80

 

 

Features:

Two independent stereo cassette deck, one for recording and playback, one for playback mode only

Integrated dubbing from Deck A to Deck B

Dual deck play mode for extended playback

Metal tape capability

Dolby Noise Reduction circuitry on both decks

4-position bias and equalization tape type selector for each deck

Fluorescent level indicators

LED indicators for record, play and pause modes

3-position monitor selection

Separate digital indicators

Individual illuminated direct cassette loading compartments

Feather touch tape mode controls

 


Specifications

Tape A (Playback only)

Frequency Response

At 70 µSec :  31,5 Hz /+6 dB, 14 kHz/+3,5 dB

At 120 µSec :  31,5 Hz /+3 dB, 14 kHz/+4,5 dB

Signal-to-Noise Ratio:  56 dB  (A-weighted)

Total Harmonic Distortion:  1,2%

Tape B (record/Playbac)

Frequency Response (-25 dB Record)

Metal Tape :  30 Hz - 17,000 Hz ±3 dB

Special/FeCr Tape :  30 - 16,000 Hz ±3 dB

Normal tape :  30 - 14,000 Hz ±3 dB

Signal-to-Noise Ratio (CCIR weight, Dolby On):  up to 64 dB

Input Sensitivity

MIC (10 k ) :  0,3 mV

Line (50 k )  :  60 mV

DIN (20 k  :  6 mV

T.H.D. (1 kHz 0VU level):  1,7%

Wow and Flutter:  0,06%

Channel Separation:  35 dB

AC Bias Frequency:  100 kHz

Headphone Output:  30 mV

Power Requirements:  120 V, 220 V  AC 50/60 Hz

Power Consumption:  15W

Dimensions (W x H x D):  430 x 106 x 390 mm (16-15/16" x 4-3/16" x 15-3/8")

Weight:  9,5 kg


 

Pioneer CT-7R cassette deck

Auto-Reverse Playback/Recording Cassette Deck

The CT-7R records and plays back both sides of a tape, automatically. Now you can record up to 90 minutes of music (with C-90 cassette) without interruption and play it back over and over as long as you like. This may be a rare feature but what's even rarer is that the CT-7R is direct-drive.

As in the more expensive models, the transport in the CT-7R uses three-direct-drive-motor, each a Pioneer brushless Hall type. This contributes to the low wow and flutter of this deck, 0,04% (WRMS) or less.

The recording/playback head is constructed of Pioneer-developed Ribbon Sendust that is three to four times thinner than those used in conventional sendust heads. This explains the extended high frequency response of this deck - to 20,000 Hz. Transient response is superior and bass response is solid. The :Small-Window" Erase Head assures total erasure of previous recordings.

And like the more expensive models, the CT-7R is endowed with a full complement of Computer-Aided Conveniences. It's easy to find the end of recorded program material on a tape, cue in on any desired selection, return to the very beginning of the start of the next selection, hear the same selection over and over again, and skip the blank, programless section at the end of the tape and start play right at the beginning of the first selection of the flip side - without even touching the operating controls.

A 4-bit microcompuer, programmed to order, controls every operation for sure and quick tape transport motion. The three-direct-drive-motor tape transport means operational ease such as fast direct change of modes and flying-start recording.

In addition to standard Dolby-B noise reduction, the CT-7R has Dolby Labs newest circuit, Dolby-C. the Dolby-C provides an additional 10 dB of noise reduction (at 5 kHz) over standard Dolby-B's. that's a total of 20 dB of noise reduction. It also has increased MOL (Maximum Output Level) to assure an extended high end.

The Auto Tape Selector detects coded recesses along the edge of each cassette casing and automatically sets the deck to the proper bias and equalization settings. An 8-LED bar-graph display )one per channel) is accurate and responsive. Other features are; One-Touch Recording, Recording Mute, Timer-assisted record/playback, wired remote control and two-way Memory Stop.

 


 Subfunctions:

Auto-reverse, auto repeat functions

MS/SKIP (Music Search/Skip) system

Music Repeat system

Blank Search system

Index Scan system

Rec Mute switch

Dolby NR system (B type/ C type / OFF) with LED indicator lamp

Stand-by mechanism with unattended recording and playback

3 position Auto tape selector (Norm/CrO₂/Metal)

Full automatic stop mechanism

Memory Stop function (FF, REW)

2 color digital level meter

3 digit mechanical tape counter

IC-based logic control

Cassette compartment illumination

 


Specifications

Systems:  Compact cassette, 2-channel stereo

Motor: 

1 x DC servo motor (for driving the capstan); 2 x DC high-torque motor (for driving the reel)

Heads: 1 x "Ribbon Sendust" record/playback head; 1 x Erasing Ferrite head

Fast Winding Time:  approx.. 90 sec C-60 tape

Wow and Flutter:  no more than 0,04% (WRMS). No More than 0,15% (DIN)

Frequency Response -20 dB Recording

Normal, LH Tape :  20 - 16,000 Hz (25 to 14,000 Hz ±3 dB)

CrO₂ Tape :  20 - 18,000 Hz (25 to 16,000 Hz ±3 dB) [0 dB rec; 25 to 10,000 Hz]

Metal Tape :  20 - 20,000 Hz (25 to 17,500 Hz ±3 dB) [0 dB rec; 25 to 15,000 Hz]

Signal-to-Noise Ratio

Dolby NR Off :  more than 59 dB

Dolby NR On :  more than 69 dB (Dolby-B); more than 79 dB (Dolby-C)

Total Harmonic Distortion:  no more than 1,2% (0 dB)

Input Sensitivity/max. Allowable Input/impedance

Mic (L, R) :  0,3 mV/ 30 mV/ 12 k   (ref. MIC Impedance: 250   to 10 K )

Line (input) :  50 mV/ 25 v/ 100 K   (ref. Level/Load Impedance)

Output Level/ Impedance

Line (x2) :  450 mV/50 k

Headphones :  60 mV/ 8  

Power Supply:  AC 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  36-45 watts

Dimensions (W x H x D):  420 x 99,5 x 270 mm (16-9/16" x 3-15/16" x 10-5/8")

Weight:  5,3 kg (12 lb)


 

Pioneer CT-6R cassette deck

A full-featured cassette deck

You'll find in the CT-6R all the essential technology of the finest Pioneer decks. Features like the Ribbon Sendust Head, 3-motor direct drive design, C.A.C. (Computer-Aided Convenience), ans so forth. It's priced, however, within the reach of any audiophile.

Just as in our finest decks, you'll find a Pioneer-exclusive head design - the Ribbon Sendust Head - for recording and playback in this model. This laminated head uses a dozen ultra-fine sendust "ribbons" to reduce eddy currents and therefore reduce core loss. This results in extended high-frequency response, all the way to the limits of audiobility. Transient response and treble clarity are improved for better still reproduction quality. During playback this same head is used for either direction of tape travel, assuring matched response regardless of direction. During recording the "Small-Window" Erase Head is also at work wiping old recordings completely clean.

Another design feature found in our more expensive models is the three-direct-drive-motor system. One motor drives the capstan and the other two drive the reels. These brushless Hall motors are largely responsible for the low wow and flutter of this deck - a mere 0,04% (WRMS). This transport design also improves head-to-tape contact for fewer dropouts and variations in recording or playback levels

Hiss and MOL-limited saturation distortion have become problems of the past. New Dolby-C noise reduction has reduced noise by 20 dB at 5 kHz, while improving high-frequency response by expanding the MOL (Maximum Output Level). Now, the usable dynamic range - up to 90 dB - is sufficiently wide to match even digital or direct-cut recordings.

The C.A.C. (Computer-Aided Convenience) features that the CT-6R offers include index Scan, Music Search and Blank Skip and Reverse. And the three-direct-drive-motor tape transport offers quick and direct change of modes and flying-start recording.

Program peaks are shown by a responsive 8-LED bar-graph display (one per channel) Other advanced deck features include the Auto Tape Selector, one-Touch Recording, Recording Mute, a wired remote control and more.

 


Subfunctions:

Auto-reverse, auto repeat functions

MS/SKIP (Music Search/Skip) system

Index Scan system

Rec Mute switch

Dolby NR system (B type/ C type / OFF) with LED indicator lamp

Stand-by mechanism with unattended recording and playback

3 position Auto tape selector (Norm/CrO₂/Metal)

Full automatic stop mechanism

2 color digital level meter

3 digit mechanical tape counter

IC-based logic control

Cassette compartment illumination

 


Specifications

Systems:  Compact cassette, 2-channel stereo

Motor: 

1 x DC servo motor (for driving the capstan); 2 x DC high-torque motor (for driving the reel)

Heads: 1 x "Ribbon Sendust" record/playback head; 1 x Erasing Ferrite head

Fast Winding Time:  approx.. 90 sec C-60 tape

Wow and Flutter:  no more than 0,04% (WRMS). No More than 0,15% (DIN)

Frequency Response -20 dB Recording

Normal, LH Tape :  20 - 16,000 Hz (25 to 14,000 Hz ±3 dB)

CrO₂ Tape :  20 - 18,000 Hz (25 to 18,000 Hz ±3 dB) [0 dB rec; 25 to 10,000 Hz]

Metal Tape :  20 - 20,000 Hz (25 to 17,500 Hz ±3 dB) [0 dB rec; 25 to 15,000 Hz]

Signal-to-Noise Ratio

Dolby NR Off :  more than 59 dB

Dolny NR On :  more than 69 dB (Dolby-B); more than 79 dB (Dolby-C)

Total Harmonic Distortion:  no more than 1,2% (0 dB)

Input Sensitivity/max. Allowable Input/impedance

Mic (L, R) :  0,3 mV/ 30 mV/ 12 k   (ref. MIC Impedance: 250  to 10 K )

Line (input) :  50 mV/ 25 v/ 100 K  (ref. Level/Load Impedance)

Output Level/ Impedance

Line (x2) :  450 mV/50 k

Headphones :  60 mV/ 8  

Power Supply:  AC 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  36-45 watts

Dimensions (W x H x D):  420 x 99,5 x 270 mm (16-9/16" x 3-15/16" x 10-5/8")

Weight:  5,3 kg (12 lb)


 

JVC KD-A33 cassette tape deck


Metal-compatible cassette deck

If you've found that an affordable price usually means a sacrifice of performance, take heart. The JVC KD-A33 metal compatible cassette deck includes much of the technology found in our most expensive decks. Yet it happens to be one of our least expensive decks.

For example, it uses Sen-Alloy heads. These JVC-developed heads handle tremendously high currents with ease, so they're especially well  suited for recording and erasing metal tape. And SA's superb electromagnetic and physical properties give you accurate frequency balance, superb extension and low distortion through years of use.

When you use metal tape with the KD-A33, you'll get all the performance you expect from metal . But when your budget  dictates using a less expensive ferric-oxide tape, you can still get metal-like sound thanks to another JVC development - Super ANRS.

In recording, Super ANRE reduces the level of high-frequency signals so the tape can handle them without, saturating, in playback, it boosts them back to their original level. As a result, sounds like cymbal crashes, trumpet blast, and spoken sibilants (normally the downfall of cassette recording) are reproduced with astonishing clarity and fidelity to the original

 

 
And like our most expensive decks, the KD-A33 has logic-governed solenoid transport controls. You can switch directly between modes, even from "rewind" to "fast forward" with just a light touch of a switch. The KD-A33 also has provisions for adding a timer device and optional remote control.

Specifications

Type:  Stereo cassette deck

Track System:  4-track, 2-channel

Tape Speed:  4,8 cm/s (1-7/8 inch/sec)

Frequency Response (0 VU Recording)

Metal Tape :  30 - 12,500 Hz (±3 dB)

SA/CrO₂ Tape :  30 - 8,000 Hz (±3 dB)

SF/Normal Tape :  30 - 8,000 Hz (±3 dB)

Frequency Response (-20 VU Recording)

Metal Tape :  20 - 18,000 Hz [30-16,000 Hz ±3 dB]

SA/CrO₂ Tape :  20 - 18,000 Hz  [30-16,000 Hz ±3 dB]

SF/Normal Tape :  20 - 17,000 Hz  [30-16,000 Hz ±3 dB]

Signal-to-Noise Ratio (from peak level, weighted, Metal Tape) :  60 dB

The Signal-to-Noise Ratio is improved by 5 dB at 1 kHz and by 10 dB above 5 kHz with ANRS on

(DIN  45 500 weighted)

Effect of Super ANRS (Normal Tape)

Improvement of S/N :  the same as with ANRS

Improvement of Frequency Response :

0 VU Recording :  6 dB at 10 kHz

+5 VU Recording :  12 dB at 10 kHz

Improvement of Distortion :

0 VU Recording :  3% or less at 10 kHz

+5 VU Recording :  2% or less at 10 kHz

Wow and Flutter:0,04% (WRMS); 0,14% (DIN  45 500)

Crosstalk:  65 dB (1 kHz)

Harmonic Distortion :  K3; 0,4$ T.H.D.; 1,0% (metal Tape , 1 kHz 0 VU)

Bias :  AC Bias

Erasure :  AC erasure (85 kHz)

Heads:  2 heads; Sen Alloy head for recording/playback and 2-gap Sen Alloy head for erasure

Motors : 

Capstan :  Electronic Gaverned DC motor

Reel :  DC motor

Fast Forward Time :  85 sec. With C-60 cassette

Rewind Time :  85 sec. With C-60 cassette

Semiconductors:  7 ICs; 57 Transistors; 31 Diodes

Input Sensitivity/Impedance

Mic Jack x 2 :  0,2 mV (max.)-72 dBs/ 600  - 10 K  (matching impedance

Line Input x 2 :  80 mV (-20 dBs)/100 K

Output Level/Impedance

Line x 2 :  300 mV/5 ko hm

Phones x 1 :  0,3 mW/ 8  - 1 k

DIN Socket: 

Input Level :  0,1 mV/k

Input Impedance :  10 K

Output Level :  300 mV (8 )

Output Impedance :  5,5 k

Matching Impedance :  50 K  or more

Power Supply:  AC 240/220/120 V, 50/60 Hz

Power Consumption:  21 W

Dimensions (W x H x D):420 x 120 x 300 mm (16-1/2: x 4-3/4" x 11-7/8")

Weight:  6,7 kg (14,7 lbs)


 

Pioneer CT-5 cassette deck

Designed for Easy Operation

The CT-5 is designed for utmost ease of operation and control. Its IC logic-controlled tape transport provides touch operation and direct change of modes. The ALC - Automatic Level Control - may be switched in for fuss-free wide-dynamic-range recording. Music Search lets you find the song you want to hear easily.

The tape transport of the CT-5 is controlled by a logic circuit contained in a specially programmed IC . It determines the sequence in which "events" happen. To set the deck in the appropriate button. And we mean touch, because these are all light-touch mode buttons.

The record/play and erase heads are specially designed to match the exacting requirements of metal tape. Sendust reinforced permalloy is used for the former because of its excellent wear characteristics (over 1,000 abrasive hours of use), its resistance to saturation and its high reliability. The latter is a double-gap ferrite type, especially chosen for its high saturation magnetic flux density and high efficiency.

The bulit-in Dolby-C noise reduction system lets you enjoy truly dynamic musical reproduction, free of audible hiss. A switchable MPX (Multiplex) filter eliminates carrier leakage from a faulty tuner so that noise reduction is achieved correctly. Of note to convenience-oriented recordists are ALC and Music Search. ALC automatically adjust an incoming signal to its optimum level during recording so that on playback the program sounds dynamically full and free of objectionable distortion. If desired, the circuit may be switched out and the correct recording level manually set with assistance from the 6-LED bar-graph level display (one per channel). Music Search is a convenient feature that lets you easily locate the beginning of the program you 're presently listening to or the beginning of the next program.

Borrowed from the more expensive models, are such features as Auto Tape Selector, one-Touch recording and timer-assisted recording/playback.

 


Specifications

Systems:  Compact cassette, 2-channel stereo

Motor:  DC servo motor

Heads: 1 x record/playback Hard Permalloy heads; 1 x Erasing Ferrite head

Fast Winding Time:  approx.. 100 sec C-60 tape

Wow and Flutter:  no more than 0,05% (WRMS)

Frequency Response -20 dB Recording

Normal, LH Tape :  20 - 15,000 Hz (30 to 14,000 Hz ±3 dB)

CrO₂ Tape :  20 - 17,000 Hz (30 to 16,000 Hz ±3 dB)

Metal Tape :  20 - 18,000 Hz (30 to 17,000 Hz ±3 dB)

Signal-to-Noise Ratio

Dolby NR Off :  more than 50 dB

Dolny NR On :  more than 68 dB (Dolby-B); more than 78 dB (Dolby-C)

Total Harmonic Distortion:  no more than 1,2% (0db)

Input Sensitivity/impedance

Mic (L, R) :  0,3 mV/ 10 k  

Maximum allowable Input Sensitivity :  57 mV (Ref. Mic impedance: 250  - 10 k )

Line (x2) :  50 mV/ 100 k

Maximum allowable Input Sensitivity :  22 V

Output Level/ Impedance

Line (x2) :  450 mV/50 k

Headphones :  65 mV/ 8  

Maximum allowable Level :  160 mV

Power Supply:  AC 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  23 watts

Dimensions (W x H x D):  420 x 99,5 x 243,5 mm (16-916" x 3-15/16" x 9-9/16")

Weight:  4,5 kg (9 lb 15 oz)


 

Pioneer CT-4 cassette deck

A Basic Cassette Deck

The CT-4 from Pioneer is an exemplary cassette deck for novice recordists. It's loaded with features to facilitate recording and playback. A case in point is its "power-assisted" tape transport, a feature unusual in a deck in this price range.

Despite being Pioneer's least expensive model, the CT-4 offers touch-operated control buttons, not old-fashioned piano-key type levers. Making this feature possible is the "power-assisted" tape transport, an ingenious Pioneer design that exploits the natural inertia of the rotating flywheel to provide power for mode changes. Heavy-duty, pwer-consuming plungers have been entirely replaced by this simple and dependable mechanism.

As in the more expensive model, a special sendust-reinforces permalloy record/play head is combined with a double-gap ferrite erase head to form a perfect match for metal tape. Each features high wear resistance, low distortion and high reliability. Here's a description of some more features that prove that Pioneer's "basic" deck is not so basic. Set the deck in the play mode and touch the fast forward button.

You're automatically whisked to the beginning of the next selection. Touch the rewind button instead of fast forward and you're back at the beginning of the song currently playing. This amazing feature we call "Music Search". Recording begins by merely touching the record button; you don't need to push the play button at the same time. Recording Mute lets you make blanks between selections without touching the record level controls. If you so desire, you can couple this deck with an optional timer to make unattended recordings or wake up to taped music.

Last but far from least, two electronic features make your recordings sound better. One is the Dolby-C noise reduction system that reduces hiss and expands high-frequency response. The other is the 6-LED bar-graph display (one per channel) that warns of impending tape saturation distortion with electronic responsiveness. As you can see, Pioneer expects a lot from even their basics.

 


Specifications

Type: Single cassette tape deck

Track System:  4-track, 2-channel stereo

Tape Speed:  4.76 cm/s

Heads:  1 x record/playback, 1 x erase

Motor:  Electronically controlled DC Servo Motor

Tape Type:  type I (Normal), CrO2, Metal

Noise Reduction:  B, C

Frequency Response:

Normal Tape : 25 - 14,000 Hz

CrO₂ Tape : 25 - 16,000 Hz

Metal Tape : 25 - 17,000 Hz

Signal to Noise Ratio:  57 dB

Wow and Flutter:  0.05%

Total Harmonic Distortion:  1.2%

Input:

Line : 60 mV

Mic :  0.3 mV / 30 k ohm

Output

Line:  450 mV / 50 k

Headphones :  63-90 mV / 8   

DIN Play/Rec Socket :  12 mV

Power consumption: 16 W

Dimensions (WxHxD): 420 x 120 x 245 mm

Weight:  4.4 kg


 

Sony TC-K5 cassette deck

The front-loading Tone Controls-K5 is Sony's middleweight champion - with heavyweight features and performance that set it apart from other cassette decks in its class. Features and performance that give you maximum value. And the quality that only our specialized recording-equipment background can provide. Many year's experience in tape-deck manufacturing and magnetic tape production - applied to deliver maximum cassette-deck performance, convenience and dependability.

 

Design and Performance

The K5's tape transport system has been designed for excellence in every critical performance area, including Frequency Response, Signal-to-Noise Ratio and Wow and Flutter.

A DC servo-controlled motor, with integral FG (frequency generator) and electronic servo-circuit, is employed for capstan-drive. This advanced design assures the utmost speed accuracy, automatically compensating for any interference which would cause speed irregularities, and smooth, stable tape travel results. the audible result is reflected in a Wow and Flutter level only 0,05% (WRMS). In our special DC servo-controlled motor, a tiny frequency generator, mounted at the bottom of the motor shaft, produces an AC signal whose frequency is proportional to the motor's instantaneous speed. This signal is run through a limiter, or 'WAVE FORM SHAPER", then a "frequency-to-voltage converter" which produces a DC output proportional to the signal fed to it. This output is compared with a highly stable DC reference voltage in a "voltage comparator". And the "difference voltage" from the comparator stage is fed to a DC amplifier which then drives the motor at exactly the correct speed. Unlike conventional servo-controlled motors, the Sony FG servo system maintains constant speed under widely varying temperature conditions. And to assure low noise, the motor is triply shielded with vibration-proof rubber, aluminum and steel. In addition, the motor is free from interference generated by external noise.

 


Features:

Front-loading, front-panel control convenience

DC servo-controlled motor with frequency generator

Ferrite-and=ferrite head

Auto-play mechanism for auto tape-repeat, with tape counter/memory for auto-start

Three-digit tape counter with automatic memory stop

Dolby noise reduction system

Switchable FM multiplex filter for Dolby recording of stereo FM broadcasts

Three-position bias and equalization switches for normal, ferri-chrome and chromium dioxide tapes

Standby capability for timer-activated record or playback

Rec-mute for instant muting during recording

Large easy-to-read VU meters, plus three LEDs for peak level indication

All-mode automatic shut-off

Front-panel line output/headphone level control

Air-damped cassette compartment for smooth eject, plus cassette-compartment illumination for checking tape supply

Removable cassette compartment lid for easy maintenance

 


Specifications

Tape Type:  Compact cassette, 4 tracks, 2-channel stereo

Tape Speed:  1-7/8 ips

Heads: 1 x Rec/Pb head; 1 x Erase heads for each direction

Motors:  One

Servo System:  Frequency

Drive System: Single-capstan

Fast winding time:  90 sec C-60 cassette

Wow and Flutter:  0,05% WRMS

Frequency Response:

FeCr Tape :  30 Hz - 16 kHz ±3 dB

CrO₂ Tape :  30 Hz - 15 kHz ±3 dB

Normal Tape :  30 Hz - 13 kHz ±3 dB

Signal-to-Noise Ratio (Dolby off, peak)

FeCr :  59 dB

CrO₂ :  55 dB

Normal :  53 dB

Total Harmonic Distortion :  1,3%

Input Sensitivity/Impedance

Microphone :  0,25 mV/low

Line :  0,775 V/100 k (Fixed);  0,026-0,775 V/100 K  (Variable)

Line Output Level & min. Load Impedance :  0,435 V/ 10 k

Headphone Impedance:  Low

Bias Frequency:  105 kHz

General

Power Requirements:  AC 120 V, 60 Hz

Power Consumption:  11 W

Dimensions (H X W x D):  5-3/4" x 17-1/8" x 11-1/2"

Weight:  15 lbs 4 oz