KENWOOD DA-1100EX (1987) | Dynamic Linear Drive

 

High-tech amplifier design for today and tomorrow. This was the Kenwood DA-1100EX (on some markets KA-D1100EX) Digital Integrated Amplifier from 1987. It features a built-in D/A converter for Digital sources. Main features are: 125W x 2 min. RMS, 8 ohms, 20Hz-20kHz, less than 0.004% THD (IHF) | 190W x 2 (DIN, 4 ohms) | Voltage Interface Gate with Dynamic Linear Drive | Dynamic Power Output (EIA) 325W/ch into 2 ohms | Twin linear full-bit DACs with Twin Quartz PLL Digital Pulse Axis Control | 4-times oversampling digital filter | Accepts all digital inputs | Optical digital/analogue coupling | 11 source inputs: 5 digital, 6 analogue | Optical/coaxial CD and DAT inputs | DAT/CD Direct selector | Dual REC OUT selector | Line Straight switch | MM/MC phono cartridge selector | Kenwood NF-CR tone controls with frequency turnover | High-rigidity chassis | Centralized power supply | Dyna-Pneumatic Suspension | Sigma Drive Type B speaker connection (A/B) | Damping factor 1000 at 50Hz | Size (WxHxD) 440x171x441mm | Weight: 19,5kg | Original sale price in Germany 2000 DM.

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TEAC V-3RX (1982) | The dbx Casette

 

An unbeatable combination of value and performance. In addition to dbx performance, this deck is equipped with block repeat capability and TEAC's new, superior CA head, High-performance CA (cobalt amorphous) head. This innovative head fully clears the characteristics of the 3-head system with just 2 heads, allowing the characteristics of the dbx system to be fully utilized. The V-3RX uses a 3-motor 3S (soft, smooth, silent) system. It is equipped with 2 motors for tape drive, 1 motor for operation, and even IC full logic control. More features: Built-in dbx noise reduction system | Repeat function | LED tape counter indicator | Record mute | Timer recording and playback capability | Vertical peak meter indicators | Dolby NR

Specifications:

Motor:

For capstan: Electronically controlled DC motor

For reel: DC motor

For mechanism:  DC motor

Drive system: Single Capstan

Wow and Flutter: 0.03%(WRMS)

Frequency Response: 20Hz to 20kHz (metal tape)

SNR: 60dB(NR out) 70dB(Dolby NR in) 92dB(dbx in)

Dynamic Range 110dB (dbx in, 1kHz, peak level)

External dimensions: Width 436 x height 112 x depth 261 mm

Weight: 6kg

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PIONEER PD-T09 (1992) | Stable Platter - Legato Link

 

New technology reflected in sound quality. Technical features of the PD-T09. Equipped with legato link conversion that breaks the playback limit of 20kHz. Due to its format, the CD limits the frequency that can be recorded on a disc to 20kHz. However, sounds from nature and musical instruments contain components above 20kHz. Strictly speaking, the original signal waveform itself is not recorded on a CD. Therefore, Pioneer has developed a new Legato Link Conversion that uses digital signal processing to estimate the original signal before recording based on the signal recorded on the CD, and makes it possible to reproduce frequencies above 20kHz according to the 1/f decay characteristic. This is installed in the PD-T09. With more natural sound quality, it opens up new possibilities for CDs. Legato Link Conversion connects the music signal data recorded on the CD every 22.7 µsec with a smooth function curve that is suitable for reproducing the frequency components of natural sounds and musical instruments. This has made it possible to obtain a waveform transmission that is extremely natural and close to the original music signal, without any unnecessary ringing (excessive waveform disturbance). At the same time, this also reproduces ultra-high frequency components above 20 kHz, making it possible to reproduce extremely natural sound quality to the ear.

Equipped with Pioneer's original high-speed pulse flow D/A converter. D/A converters are extremely important components, as their conversion accuracy determines sound quality. Pioneer has advocated the idea of ​​high oversampling and low-order noise shaping in 1-bit D/A converters. The High-Speed ​​Pulse Flow D/A Converter is an original development that further evolves this idea. The 1-bit method expresses the resolution in the amplitude axis direction as two values, 0 and 1, in the time axis direction, and performs high-precision D/A conversion by applying bit compression and further using noise shaping technology. However, re-quantization noise occurs during bit compression, which can cause noise. The noise shaper pushes the requantization noise that is distributed throughout the entire range out of the audible range. However, Pioneer believes that the presence of noise, even outside the audible range, is undesirable in terms of sound quality, and has therefore devised a unique innovation in the noise shaper. In the high-speed pulse flow D/A converter, the noise shaper operates at an extremely high oversampling frequency of 384fs, enabling finer sampling and significantly reducing the noise floor caused by requantization.

Equipped with three independent transformers for digital, analog and DAC. Powerful power supply. The power supply section is the energy source that operates all circuits. In addition to providing a stable power supply, the PD-T09 has also thoroughly eliminated mutual interference. Firstly, the power transformer is equipped with three independent transformers, one each for the digital & servo, analog, and D/A converter. Furthermore, the power supply circuit uses a 6-part 15 regulator. The secondary sides of the three power transformers are separated into six parts: digital & servo, servo drive, D/A converter, and audio +, -, and FL, eliminating mutual interference. In addition, a newly developed discrete power supply is used for the audio circuit. A discrete power supply is also used for the digital & servo.

Pick-up: Three beam semiconductor laser system

Frequency characteristic: 2 Hz to 20 kHz

Signal-to-noise ratio (EIAJ): 115 dB or more

Dynamic Range (EIAJ): 99 dB or more

Channel Separation (EIAJ): 110 dB or more

Wow & flutter (EIAJ): Measurement limit (± 0.001% W. PEAK) or less

Harmonic distortion factor (EIAJ): No more than 0.0015%

External dimensions: Width 440x Height 151x Depth 433 mm

Weight: 20kg

PD-T09 Japan Market

PD-95 International Market

PD-S95 Elite (transport only) U.S.A.

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SONY PS-F9 (1983) | Flamingo Stereo Turntable

 

While the whole world strives for size, Sony like to go the other way, at least when it comes to the dimensions of Sony's mobile entertainers. An ambition that is always good for surprises. The smallest turntable with tangential tonearm is called Sony PS-F9 Flamingo. Now, the compact dimensions wouldn't be so noteworthy if this device didn't also astonish with unusual versatility: It works in any position, horizontally or vertically, it can be wall-mounted without vibration, is battery-powered (a power supply can be connected), and can be listened to directly via headphones or with the Sony APM-090 active speakers. It can also be connected to stationary hi-fi systems and radio recorders. The highlight, however, is the top-class technology that gives this Sony idea its sound quality, typical of Sony.

PS-F9

Tangential-Tonearm

Quartz-controlled direct drive

Linear Tracking

Fully automatic

Motorized record lock

Wow and flutter only ±0.14% (DIN)

Line Out

2 headphone outputs

108x263x73mm

1,7kg

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Victor DC-G7 (1989) | G Creation - Digital Super Bass

 

AL-E500X

Computerized Fully Automatic Turntable

FX-EG7

TV/FM/AM Digital Sythesizer Tuner

36 station preset

3 program timers

Sleep & Wake Up Timer

AX-EG7

Digital Basic Integrated Amplifier

80W+80W(EIAJ) 

8fs digital filter & 18-bit dual DAC

3 Digital (Optical CD/BS/DAT) & Digital Out

Digital Super Bass

Live Phonic space effect

SEA-EG7

S.E.A. Stereo Graphic Equalizer

Equipped with spectrum analyzer

7-band control

Five-mode spectrum analyzer display

12 patterns of graphic equalizer preset memory

TD-EG7

Double Reverse Cassette Deck

Half shell stabilizer, W reverse deck with Dolby C

New Cyber ​​DD Recording System

Non-stop edit fade link without gaps (CD TAPE TAPE TAPE)

Equipped with electronic Rec volume and optimal recording level setting DDRP

Triple edit (AUTO/PROGRAM/MULTI) to fit perfectly into the specified time

Fade edit without blank space at the end of the tape

Auto fade for editing fades the way you want

DAC Direct REC for pure recording via the shortest possible path

XL-EG7

Opt Digital Compact Disc Player

Optical Digital Output

High Rigidity, Low Resonance and Low Vibration

High speed peak level search

Creation G7

Largest in its class, 3-way speaker with 28cm woofer

A new 60-key full remote control with ease of use

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YAMAHA CR-1000 (1974) | Strong & Clear

 

The CR-1000 was a top-of-the-line FM receiver from Yamaha, introduced in 1974. The main amplifier circuit uses a pure complimentary service OCL system directly connected to all stages using two differential amplifiers. A large power transformer with good regulation is used for the power circuit. Power transistors and drive transistors that require a large current are supplied with voltage from a rectifier circuit that uses a large capacity capacitor of 10,000 μ Fx2 and a rectifier diode with a sufficient surge current of 250A. All other circuits are driven by a constant-voltage power supply circuit, enabling stable operation. Built-in 2-stage protection circuit for power transistor and speaker. The power transistor protection employs a limiter method that detects when the ASO (safe operating area) is exceeded and limits the input. Even when the protection circuit is activated due to overload or other reasons, the output only decreases and playback is not interrupted. Main characteristics: High-sensitivity FM input stage with dual MOS field-effect transistors and frequency-linear five-way tuning variable capacitor | IF amplifier with integrated circuit, seven-stage differential amplifier, and six ceramic filters | Exclusive to YAMAHA: Multiplex demodulator with negative feedback in the transistor circuit | YAMAHA Auto-Touch Tuning | LED display for mains, AFC/station, and stereo reception | Indicators for signal/field strength and center tuning | Continuously adjustable, dual-action FM noise reduction | Direct-coupled phono equalizer | Three-stage, directly coupled, low-noise tone controls and filter amplifier with extremely low harmonic distortion | Continuously adjustable aurally accurate volume correction | Separate microphone amplifier for microphone fade-in | Connection for two tape recorders With circuitry for tape-to-tape copying | Separable preamplifier and power amplifier | Two phono inputs, one of which has an impedance selector (30/50/100 kOhm) | IF output for quadrophonic demodulator | Multipath output for precise antenna alignment using an oscilloscope | Connection for two speaker groups | Logical and user-friendly arrangement of the controls on the front panel | Built-in protection circuit for power transistors and speakers | Headphone connection on the front panel | Power output 70+70W 8ohm | Dynamic power 200W | THD 0,04% | Dimensions (WxHxD) 510x147x335mm | Weight 19kg | Original sale price in Germany 2100 DM

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SONY TC-K666ES (1982) | 3 Motor Direct Drive

 

When introduced, the K666ES was the flagship model of the "ES" series, and features three motors, three independent heads, and an extremely high-precision, anti-vibration design that sets a new standard for cassette decks. Sony's unique independently suspended 3-head system using laser amorphous heads. It is the same size as a combination head, and uses an independently suspended three-head system that provides uniform head touch and high azimuth accuracy for both the recording and playback heads. Moreover, the heads are equipped with laser amorphous heads that use an amorphous magnetic alloy for the core material, which has an excellent signal-to-noise ratio and is resistant to magnetic saturation. By maximizing the benefits of the three-head system, we have achieved wide frequency characteristics and dynamic range suitable for the digital age. Quartz lock D.D.3 motor system. The capstan drive uses the rotating shaft of a linear BSLD.D. motor, which has excellent characteristics for audio equipment, as the capstan, and is further servoed by a quartz lock to achieve high-precision driving characteristics as a quartz-locked direct drive system. In addition, to improve the operating precision and durability of the entire driving mechanism, a three-motor system is used in which a linear BSLD.D. motor is also used for the take-up reel and the supply reel. Moreover, an electronic back tension servo is used, which detects the supply reel's rotation speed and applies the optimum back tension, preventing discrepancy in tape speed between the start and end of winding. Achieving stable tape running using Closed loop dual capstan system. This is a system that stabilizes tape running by sandwiching the tape between two sets of capstans and pinch rollers arranged around the head. The advantages are: 1) It cuts off the tape vibration transmitted from the reel, improving wow and flutter characteristics; 2) It shortens the tape vibration span, and can expel modulation noise outside the audible range; 3) It uses the tension between the two capstans to always obtain a stable head touch, etc. This mechanism, which has a proven track record in open reel decks, achieves extremely high tape running accuracy. The amplifier section is a DC twin mono configuration. Sony's technological capabilities are fully utilized in the amplifier section, which is often overlooked in decks. The playback flat amplifier has a full L/R twin mono structure, and is configured as a DC amplifier with a circuit layout that follows the signal flow. Furthermore, the head and playback amplifier are directly coupled to eliminate capacitors, and a dual FET differential two-stage SEPP circuit is used to eliminate signal modulation factors as much as possible, ensuring simple and straight transmission. During recording and playback, the motor rotation speed is kept low at approximately 6 rotations per second for the capstan and approximately 0.3 to 0.7 rotations per second for the reel to minimize mechanical vibration. In addition, a zinc die-cast mechanism block is used, which minimizes harmful resonance in terms of both material and structure, and other features provide a thorough vibration-proof design. The ICs that make up the Dolby NR, B, and C circuits use a symmetrical Dolby IC with left and right channel symmetry. This makes the wiring patterns of the peripheral parts symmetrical, resulting in clearer sound image positioning. The high-speed two-speed fast-forward/rewind function cuts tape winding time by more than half (compared to previous models) and also protects the tape at the beginning and end of winding. Cueing is also possible by pressing the pause button and the fast-forward or rewind button simultaneously. Bias/recording level calibration allows precise adjustment of the appropriate bias and tape sensitivity for each tape used.

Specifications:

Heads: 1 erase, 1 record, 1 playback 

Motor: 3 linear BSLD.D. motors 

Signal to noise ratio: 56dB, 73dB (Dolby NR-C type) 

Frequency characteristics: 25 to 19,000Hz ±3dB (METAL cassette)

Frequency range: 20 to 20,000Hz (METAL cassette)

Wow and flutter: ±0.04% WPeak, 0.025% WRMS

Dimensions: 430 (width) x 105 (height) x 285 (depth) mm 

Weight: 6.5kg

Original sale price in Germany 1550 DM

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KENWOOD DR-W1 (1994) | The CD Player that Records

 

Introducing CD recording capability for the home...in 1994... Now you can make your own CDs that provide all the advantages of conventional CDs. From its sleek golden front panel to its wireless remote control, the DR-W1 looks for all the world like a premium CD player. It is that... and much more. Because the DR-W1 is one of the world's first consumer CD players that also records CDs. And unlike similar systems, the DR-W1 can make completed CDs that are playable on other CD players. They're 100% compatible, 100% CD sound quality.

Accepts Digital and Analog Inputs

Use the DR-W1 to compile your favorite music onto CD from your entire music library, analog or digital. It's the ideal solution for archiving and for convenient playback in portable or car CD players. Of course, live "direct to disc" recording is also possible via an outboard microphone amp or mixing console. You can connect digital sources to one coaxial and two optical input terminals. Conventional stereo jacks are also provided for input from your amp, receiver, or other analog source. Simply select your desired input on the front panel. Adjustment to the sampling frequency of incoming digital signals is completely automatic.

Recording is Easy

If recording from an analog source, you press the record button once and then adjust recording level and

balance as necessary. Pressing the record button again begins actual recording. Recording from digital sources is even easier, since no adjustments are required. Recording begins once the source starts playing. Track number data for PMA and TOC creation already exists in CD and DAT material. For other source material, you can enter numbers manually or let the DR-W1 insert them automatically when it detects periods of silence in the program material.

Usable As a Stand-Alone D/A and A/D Converter

With the "Source Monitor" function you can use the DR-W1 as a stand-alone A/D and D/A converter. This is particularly useful for monitoring the sound of analog inputs during recording level adjustment. It lets you hear the actual results of both A/D and D/A conversion before recording begins. Digital output is provided via one optical and one coaxial terminal. The DR-W1 uses a 1-bit Delta-Sigma type ADC with 64-times oversampling and 4th order noise shaping. Its DAC is a 1-bit Delta-Sigma type with 128-times oversampling and 5th order noise shaping. These are highly linear devices to assure clean, accurate sound quality. Dimensions (WxHxD) 476x147x436mm | Weight 22,5kg

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OTTO SX-P1 (1976) | Porous Metal

 

Otto (Orthophonic Transistorized Technical Operation) was a brand name used by Sanyo for the Japanese market. The SX-P1 was introduced at the Internatinal Exhibition held in Osaka in 1976 and it received the highest award. At that time, various manufacturers were competing with each other by releasing large, powerful speaker systems priced at around 130,000 yen. There was a lineup of powerful loudspeakers such as Sony's SS-G7, Sansui's SP-G300, and Onkyo's Scepter 10. Among them, Sanyo Electric, which was working hard under the OTTO brand at the time, released the SX-P1. The biggest feature of the SX-P1 was the woofer unit. It was a 30cm diameter cone woofer that used a metal diaphragm called a "porous metal cone." This "porous metal cone" was made by foaming nickel material, then gluing 20μ aluminum foil to the inside, and molding the whole into a cone shape. It achieved high rigidity and sound speed that only metal can provide, and the foaming gave it a sufficiently low Q value comparable to that of a paper cone, achieving excellent characteristics as a diaphragm. It was driven by a large ferrite magnet with a diameter of 156 mm and a weight of 1.4 kg, with a high magnetic flux density of 11,000 gauss, which aimed for low distortion. This woofer was also sold as a standalone unit as the ASX-1 (35,000 yen). The squawker was equipped with a 67mm diameter dome-type unit that used a newly developed 50μ thick three-layer diaphragm made of pure aluminum with 80% alumina on both sides. The tweeter was equipped with a ring-type unit that used a 30μ thick ultra-lightweight 6mm wide ring-structure diaphragm made of hard aluminum. The diaphragm itself was ultra-lightweight at 0.06g, and the V-shaped ring structure had the advantage that the width from the driving point of the voice coil to the edge was narrow, making it less likely to cause split vibration. As mentioned above, from the woofer to the tweeter , it was composed of metal diaphragm units. The cabinet itself was an elaborate one with an ebony veneer finish, and the woofer baffle was as thick as 80 mm. The total weight of the system was 51 kg. The export version was sold as Fisher STE 1200. There was even a Soviet copy of this loudspeaker, the Elektronika 100AC-060.

Specifications:

3-way bass reflex system

Woofer: 30cm diameter, uni-cone type (porous metal cone)

Midrange: 67mm diameter, hard-dome type (oxidized aluminum dome)

Tweeter: 38mm diameter, ring type

Rated input: 100W (200W peak)

Output level: 93db/1m

Frequency range: 25-35.000Hz

Dimensions (WxHxD): 450x910x430mm

Weight: 51kg

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AIWA CDS-999 (1987) | Prior - DAT dimension

In order to reproduce the high quality sound that DAT brings to the fullest extent, the entire system is made into a digital component - CDS-999. The top-of-the-line DAT component. The sound far exceeds expectations. The 150W+150W high power amplifier is amazing. Everyone realizes that the power of the amplifier affects the sound quality, especially when the volume is turned up. Ample high power of 150W+150W for playing high quality digital sources. The adoption of a low noise O.P. amplifier that cuts power supply noise reproduces a pure sound with a signal-to-noise ratio of over 100dB. It drives digital sources clearly and dynamically. For even higher performance, it is also equipped with a DAT/CD direct switch. The large capacity toroidal transformer and two-system REC OUT selector will impress any enthusiast. Of course, it also has a built-in surround circuit that allows you to fully experience the sense of realism. The electric volume that can be freely controlled by the remote control is also a fresh idea.

The 3-Head !!!, fully independent dual deck design is amazing. A completely independent dual deck with a 3-head quick reverse deck, which is synonymous with high-end single decks, and an amorphous head quick reverse deck, each functioning independently. Furthermore, both decks are independently equipped with Dolby HX Pro, which is effective for recording digital sources with a wide dynamic range. Furthermore, independent dual Dolby B/C is also adopted, which enables cross Dolby dubbing. A thorough dual configuration with dual electronic counters, dual bias fine adjustment, etc. A level indicator with peak hold, blank skip mechanism, etc.

The CD player uses a newly developed linear motor, achieving high-speed access. In addition, it is equipped with a 4x oversampling digital filter for high sound quality without compromising phase characteristics. It is not only pursuing the best sound quality, but also high levels of operability. It has CBRS (CD Backskip Recording System) for perfect cassette recording and an auto blank system that is effective for dubbing to DAT. Other features include a timer program play that wakes you up in the programmed song order, and a 20-song random program mechanism with program accumulation function. Its functions are versatile and versatile, including a 20-song music calendar and index search.

The tuner is of course a synthesizer type. It is an audio multiplex type for FM/AM/TV (UHF/VHF). Eight stations can be preset for each, so you can select a station with one touch. It also has a built-in timer with two programs per day (EVERY/ONCE) and Sleep timer.

The large 4-way speaker system incorporates a woofer, squawker, tweeter, and super tweeter. It has the ability to reproduce a wide digital range from deep bass to treble. The 27cm diameter woofer uses an aluminum die-cast frame with low resonance and a newly developed high-rigidity amorphous silica fiber cloth diaphragm that improves bass reproduction. The speaker size is not only larger, but also heavyweight at 12kg (each). This helps improve sound quality. Of course, it is a round baffle system that enhances the sense of sound positioning.

Others:

●36cm midi size, full-fledged component system with wooden sides. ●All components are connected via pin cords with independent power sources. ●Full system remote control that can be operated from the listening position.

Amplifier: Maximum practical output: 150W+150W (60) Signal-to-noise ratio: CD and other 100dB

Tuner: Type: Quartz PLL synthesizer; Usable sensitivity: AM 300V/m, FM 15.3dBF, TV (VHF) 20dBF, TV (UHF) 30dBF; Usable selectivity: FM 52dB (±200 kHz)

Deck Head configuration: 1. Recording/playback LC-OFC winding amorphous, 2. Combination DX erasure double gap ferrite Wow and flutter: 0.065 (WRMS)/0.1 (W-PEAK) Frequency response: (-20VU) Metal 10Hz~20kHz Chrome 10Hz~19kHz Normal 10Hz~17kHz Signal to noise ratio: 73dB (Metal, Dolby C-ON)

CD player ● Frequency response: 2Hz~20kHz D range: 90dB ● Harmonic distortion: 0.005% (1kHz)

Speaker: Cabinet type: 4-way bass reflex type Speaker configuration: 27cm woofer, 8cm squawker, 5cm tweeter, 2.5cm super tweeter Frequency range: 35Hz~25kHz Impedance/output sound pressure level: 6ohm/91dB/w-m Maximum input/crossover: 150W/800Hz, 4kHz

Center unit dimensions/weight: 360(W)×419.8(H)×325(D)mm/20.4kg 

Speaker unit (single unit) dimensions/weight: 325(W)×575(H)×275(D)mm/12kg

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