Wharfedale W70D

 Achromatic W70D Versatile High and Low Boy Deluxe Four-Way Speaker System.

Exclusive Sand-Filled Enclosure

The new W70D incorporates the finest components for multiple speaker systems. The 12 ½" woofer employs a massive (9 ½ lb) magnet assembly on a heavy cast aluminum chassis. The 2" pole piece and magnet keeper plates of finest grain-oriented, high permeability Sheffield steel, insure maximum gap flux density with minimum heat loss, as well as exceptional power and transient handling ability. Low natural resonance, high but well controlled compliance, and long axial excursion add to the thrilling bass response capabilities of this acoustic suspension system.

 A special, heavy duty 8" speaker serves as a "passive" radiator for the upper bass range and as an energized driver for the lower midrange. An acoustically isolated 5" unit handles the upper midrange, wwhile Wharefedale's advance-design mylar pressure-dome tweeter contributes pure, wide-angle treble. Individual, continuously variable controls adjust the mid and treble ranges.

  The enclosure employs Wharfedale's exclusive sand-filled construction for maximum inhibition of cabinet sound coloration. The versatile design permits use of the W70D as a "high boy" when placed on end, or as a "low boy" when placed on its side. Superbly styled, the W70D is often used, because of its table top, as an end table alongside sofas or chairs. Because of its low height, it is also ideal for positioning under bay windows. The front grille is removable for decorative changes.

Specifications

Frequency Response:  25 - 20,000 Hz

Input Power Minimum:  8 watts (IHF, per channel)

Input Power Max:  40 watts (IHF, per channel)

System Impedance:  4 to 8 ohms

Acoustic Controls:

Treble : Continuously variable

Midrange :  Continuously variable

Speaker Components:

1 x 12 ½" heavy duty woofer

1 x 8" upper bass/lower midrange

1 x 5" upper midrange

1 x 3" omnidirectional mylar dome tweeter

Acoustic suspension cabinet with exclusive sand-filled construction LCR 4-section crossover network

Crossover Points:

Low Midrange :  175 Hz (mechanical)

Upper Midrange :  1250 Hz (electrical)

Treble :  3500 Hz (electrical)

Dimensions (W x H x D):  24" x 20-7/8" x 12-3/8" (Utility Model, no table tops)

Weight:  74 lbs (shipping)

Finishes:  Choice of oiled walnut (std.), polished walnut (on special order), or "Utility" in sanded Birch with flat molding.

EPI 100

 The Linear Sound of EPI

At first glance, it may seem like a contradiction in terms. How do you correlate a sound, something you perceive with your ears, with a line, something you perceive with your eyes.

The answer is surprisingly simple.

Linear Sound is the way a perfectly reproduced audio signal would look when plotted across a frequency response graph; a perfectly straight line, with no dips or peaks in the middle, and no unexpected drop-offs at the frequency extremes.

Linear Sound is accurate sound. And while no loudspeaker to date is perfect, the more linear it looks on a frequency response graph the more accurate it will sound your ears.

Thanks to many years of research and development by some very knowledgeable people, EPI loudspeakers are the most linear you'll hear.

Few loudspeakers have even relatively linear response that extends as low into the bass region, or as high into the treble as EPI loudspeakers.

And EPI loudspeakers dispers all those frequencies over a broader area of the typical listening room than any other conventional loudspeakers (at 15,000 Hz, EPI loudspeakers are still virtually linear 90 degrees of axis). Which means that unlike other loudspeakers , EPI speakers are entirely free of the "boxiness" that makes a loudspekers sound like a loudspeaker … instead of like music.

 "The Linear Sound of EPI" expresses our continuing dedication to creating perfectly accurate loudspeakers.

The EPI 100 has become the industry standard for bookshelf loudspeakers. Leading consumer and audiophile publications have consistently given the EPI 100 their top ratings. It does everything yoy want a loudspeaker to do, and it does it al. In a compact cabinet.

The EPI 100 features all the technological advances made by EPI.

You will hear "extended frequency response", which is the ability of a speaker to reproduce both the very lowest, and very highest, musical frequencies.

You will hear "extreme linearity", common to all EPI speakers. Music doesn't come out of the EPI 100 sounding like it's coming out of a box. There is virtually no exaggeration, or coloration of the signal fed into the speakers.

You will hear excellent "dispersion", over 1180 degrees, made possible by EPI's unique one-inch linear air-spring tweeter. No matter where you sit in your room to listen to the EPI 100, you will enjoy a sharply-defined stereo effect.

And, unlike nearly every other speaker, you can listen for hours to the EPI 100 without suffering listening fatigue. The reason is EPI's "minimum distortion" - both harmonic and intermodulation.

Remarkably, the EPI 100 gives you so much, without costing so much.

Frequency Response:  48 to 20,000 Hz ±3 dB

Recommended RMS Power Range:  12 to 80 Watts

Crossover Frequency:  1800 Hz

Driver Complement

1 x 1" Air Spring Tweeter

1 x 8" Long Traverse Woofer

Nominal Impedance:  8 Ω nominal; 4 Ω D.C.

Finish:  oiled walnut,wood-grained vinyl optional

Grille:  acoustically-transparent black cloth

Dimensions:  21" x 11" x 9"

Weight:  25 lbs

Akai AA920

 AA-920 Stereo Tuner Amplifier

The AA_920 top quality FM/AM MPX stereo tuner amplifier features multiple connections and controls and three separate speaker systems which can be utilized individually or two systems simultaneously. Step type volume control with prest facility, bass and treble controls for even and precise adjustment. Efficient design includes signal strength tuning meter, mode indicator lamps and ideally positioned controls for easy operation.

Specifcations

FM Tuning Range:  86,8 to 109,2 MHz

Dial Tracking Error:  ±250 khz

Sensitivity (IHF):  3,2 µV

Sensitivity Deviation:  withinh 3 dB

Image Rejection Ratio:  better than 75 dB

IF Rejection Ratio:  better than 85 dB

Capture Ratio (IHF):  less than 2,5 dB

Liliting Sensitivity:  less than 8 dB

Muting Sensitivity:  23 dB ±3

Selectivity:  better than 70 dB

AM Suppression Ratio:  better than 45 dB

Signal-to-Noise Ratio:  70 dB

Distortion Factor [stereo/mono]:  less than 1,5% / 0,7%

Frequency Response:  -11 dB at 10 kHz (±1 dB)

Stereo Sensitivity:  less than 14 µV

Stereo Separation:  better than 33 dB

Rejection Ratio:  better than 50 dB

L-R Deviation:  within 3 dB

Recording Output:

Pin :  350 mV (-7±3 dB)

DIN :  70 mV (-21 ±3 dB)

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Dial Tracking Error:  within 2%

Sensitivity (IHF):  250 µV

Sensitivity Deviation:  within 6 dB

Image Rejection Ratio:  better than 55 dB at 1 MHz

IF Rejection Ratio:  better than 55 dB at 1 MHz

Selectivity:  better than 30 dB ±10 kHz

S/N Ratio:  better than 40 dB

Distortion Factor:  less than 1,5%

Frequency Response:  -15 dB at 3 kHz

Recording Output:

Pin :  140 mV (-15 ±2 dB)

DIN :  27 mV (-29 ±2 dB)

Audio Section

Power Output:  

45 W per channel at 4 Ω

30 W per channel into 8 Ω

Frequency Response:

Phono :  RIAA standard  ±1,5 dB

Aux :  20 Hz to 50,000 Hz

Power Bandwidth:  10 to 50,000 Hz (distortion 0,5%)

Input Sensitivity

Phono :  2,5 mV (-50 ±1,5 dB)

Mic :  2,5 mV (-50 ±1,5 dB)

Aux :  140 mV (-15 ±1,5 dB)

Tape :  140 mV (-15 ±1,5 dB)

Signal-to Noise Ratio:

Phono :  better than -35 dB

Mic :  better than -35 dB

Aux :  better than -45 dB

Tape :  better than -45 dB

Residual Noise:  less than 1,4 mV (less than -55 dBm)

Tone Control

Bass :  ±10 at 100 Hz ±10 dB

Treble :  ±10 at 10 kHz ±10 dB

Loudness Control:  9 dB  at 100 Hz ±1,5 dB; 6 dB  at 10 kHz ±1,5 dB

Filter

Low Cut Filter :  -8 dB  at 50 Hz ±1,5 dB

High Cut Filter :  -9 dB at 10 kHz ±1,5 dB

Crosstalk:  better than 50 dB

L-R Deviation:  within 2,5 dB Phono

Recording Output

Pin :  140 mV (-15 ±2 dB)

DIN :  25 mV (-30 ±2 dB)

General

Semiconductors:  38 Transistors; 3 FET; 5 ICs; 20 Diodes; 1 Zener Diodes; 2 Varistors

Power Source:  100 to 240 V , 50/60 Hz

Power Consumption:  Max 180 W

Dimensions (W x H x D):  454 x 155 x 330 mm (17,9" x 6,1" x 13")

Weight:  15 kg  (33 lbs)

Akai AA930

The Stereo Tuner Amplifier AA-930 , like all of the AA-900 Series, features uncluttered front panel control design for efficient operation. Powerful 200 W solid state tuner amplifier employing top quality parts and space-age circuitry for quality stereo performance.

Sophisticate your old system with Akai's new AA-930 stereo receiver.  Delivers all the power and performance your system could ever need. Separate signal and tuning indicators are provided, plus sound monitoring, high/low filters and FM muting. The AA-930 comes in a distinctive rosewood cabinet, … a unit that looks as good as it sounds.

Specifcations

FM Tuning Range:  86 to 108 MHz

Dial Tracking Error:  ±250 khz

Sensitivity (IHF):  2,8 µV

Sensitivity Deviation:  withinh 3 dB

Image Rejection Ratio:  better than 85 dB

IF Rejection Ratio:  better than 100 dB

Capture Ratio (IHF):  less than 1,5 dB

Liliting Sensitivity:  less than 8 dB

Muting Sensitivity:  20 dB ±3

Selectivity:  better than 80 dB

AM Suppression Ratio:  better than 45 dB

Signal-to-Noise Ratio:  70 dB

Distortion Factor [stereo/mono]:  less than 1,5% / 0,5%

Frequency Response:  -11 dB at 10 kHz (±1 dB)

Stereo Sensitivity:  less than 20 µV (less than 26 dB)

Stereo Separation:  better than 35 dB

Rejection Ratio:  better than 50 dB

L-R Deviation:  within 3 dB

Recording Output:

Pin :  390 mV (-6±3 dB)

DIN :  70 mV (-21 ±3 dB)

AM Tuner Section

Frequency Range:  525 to 1650 kHz

Dial Tracking Error:  within 2%

Sensitivity (IHF):  250 µV

Sensitivity Deviation:  within 6 dB

Image Rejection Ratio:  better than 60 dB at 1 MHz

IF Rejection Ratio:  better than 60 dB at 1 MHz

Selectivity:  better than 30 dB ±10 kHz

S/N Ratio:  better than 40 dB

Distortion Factor:  less than 1,5%

Frequency Response:  -15 dB at 3 kHz

Recording Output:

Pin :  140 mV (-15 ±2 dB)

DIN :  27 mV (-29 ±2 dB)

Audio Section

Power Output:  

50 W per channel at 4 Ω

45 W per channel into 8 Ω

Frequency Response:

Phono :  RIAA standard  ±1,5 dB

Aux :  20 Hz to 50,000 Hz

Power Bandwidth:  10 to 50,000 Hz (distortion 0,5%)

Input Sensitivity

Phono :  2,2 mV (-51 ±1,5 dB)

Mic :  1,5 mV (-54 ±1,5 dB)

Aux :  110 mV (-17 ±1,5 dB)

Tape :  110 mV (-17 ±1,5 dB)

Signal-to Noise Ratio:

Phono :  better than -33 dB

Mic :  better than -33 dB

Aux :  better than -43 dB

Tape :  better than -43 dB

Residual Noise:  less than 2,5 mV (less than -50 dBm)

Tone Control

Bass :  ±10 at 100 Hz ±10 dB

Treble :  ±10 at 10 kHz ±10 dB

Loudness Control:  7 at 100 Hz ±1,5 dB; 6 at 10 kHz ±1,5 dB

Filter

Low Cut Filter :  -9 at 50 Hz ±1,5 dB

High Cut Filter :  -9 at 10 kHz ±1,5 dB

Audio Mute:  -20 at 1 kHz ±1,5 dB

Crosstalk:  better than 50 dB

L-R Deviation:  within 2 dB Phono

Recording Output

Pin :  125 mV (-16 ±2 dB)

DIN :  23 mV (-30 ±2 dB)

General

Semiconductors:  53 Transistors; 1 FET; 5 ICs; 30 Diodes; 5 Zener Diodes; 2 Varistors

Power Source:  100 to 240 V , 50/60 Hz

Power Consumption:  Max 260 W/320 VA (4 Ω)

Dimensions (W x H x D):  483 x 168 x 398 mm (19" x 6,6" x 15,7")

Weight:  15 kg  (33 lbs)

Kenwood KP-3021

 Kenwood's KP-3021 is a revolutionary automatic turntable. Thanks to the 24-pole synchronous motor employed exclusively for the arm's operation, all the automatic functions - auto-play, auto-return, auto-repeat and auto-stop - are electrically operated. This means KP-3021 has completely overcome the troubles conventional automatic players often suffer from. Even when you happen to mistake the handling, KP-3021's fool-proof mechanism won't be out of oreder.

 Special Features

Automatic Mechanism

A high quality 24-pole synchronous motor is emplyed exclusively for the arm operation. This means all the automatic operations are done electrically. Besides the convenience, Kenwood has brought reliability, smoothness and durability to the KP-3021. you seldom meet the accidents or troubles in the automatic mechanism. Even when you mis-handle, neither mechanism nor disc is injured. What is required to you is to switch on and  to fully rely on the KP-3021.

Automatic Operations

Auto-play - Push soft the control panel and the turntable rotates. At the same time the arm leaves the rest and gently goes down on a disc.

Auto-return - When the disc playing ends, the arm returns to the rest and the power switch turns off. No harmful side-force affects on the stylus.

Auto-repeat - By the slide-type switch the disc playing can be repeated.

Auto-cut - When you want to discontinue the playing, push the control panel. The arm rises and returns to the rest.

Disc Size Selector

According to the disc on the turntable please set the lever beforehand at either of 30, 25 0r 17. the stylus then sinks accurately on the starting point.

Manual Operation

By setting the lever at the position "Manual", the KP-3021 can be operated manually. For manual convenience the Arm Lifter is attached. Another enjoyment may be yours through hand-operation.

Belt-Drive System

For the drive system Kenwood employs a specially developed 4-pole outer-rotor hysteresis synchronous motor which provides constant rotation with far less wow and flutter. In addition, the belt drive system offers superb signal to noise ratio.

Newly Designed Pipe Arm

The S-shaped pipe arm with high sensitivity is used. The built-in lateral balancer will meet any severe equirement.

Specifications

Drive:  Belt drive system

Motor:  Outer-rotor hysteresis synchronous

Turntable:  12" (300 mm) solid die-cast aluminum alloy type

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  less than 0,08%

Signal-to-Noise Ratio:  more than 45 dB

Tone Arm:  Static Balanced Pipe Arm; 4-terminal plug-in type; Lateral balancer

Tracking Error:  ±1,5 degree

Stylus Pressure Variable Range:  0 to 4 grams

Cartridge:  Moving Magnet Type

Frequency Response:  20 to 20,000 Hz

Output Balance:  within ±1 dB

Channel Separation:  more than 25 dB at 1,000 Hz

Impedance:  5 k Ω

Output Voltage:  5 mV (1, 000 Hz, 5 cm/s)

Load Impedance:  50 k Ω

Recommended Stylus:  3 grams ±0,5

Pressure

Stylus :  0,7 mil Diamond Stylus

Compliance :  7 x 10¯⁶ cm/dyne

Replacement Stylus:  ype N-34

Special Mechanism:  Auto-in; Auto-cut; Auto-return; Auto-repeate; Disc size selector; Manual-in systems; 24-pole synchronous gear motor for arm drive.

Supplied Accessories:  Spare plug-in head, adaptor, motor oil

Power requirement:  AC 110-120 V; 220-240 V

Power Consumption:  14 W at 60 Hz; 15,5 W at 50 Hz

Dimensions (W x H x D):  18-1/8" x 7" x 16-1/8"

Weight:  16,9 lbs

Dual CS 505-1

 Dual CS 505-1

U.L.M. Tonearm, Vario-belt drive Semi-automatic.

 U.L.M. Tonearm and Gimbal Suspension.

The four-point gyroscopic gimbal, with mass-free vertical tracking force, is featured in the CS 505-1 as well as in the higher prieced Dual turntables. Thus, the CS 505-1 has the same gyroscopic bearing principle as the navigation instruments used in areonautical engineering. The advantages absolutely minimum bearing friction, no change in tracking forces and uniformly excellent tracking properties under all operating conditions. Even in the case of warped records or when the turntable is not quiter precisely horizontal. This is the highest precision bearing technology typical of Dual quality.

 The U.L.M. Tonearm. Less than half the effective mass of convencional high-quality tonearms. Clearly lower harmonic distortion and audibly better tracking even with warped records.

The special XM 300 alloy. High strength and outstanding internal damping. No flexural resonance from 60 to 80 Hz, no torsional resonance from 300 to 400 Hz. Better stereo separation.

The tonearm suspension. Four-point gimbal. Only 0,07mN bearing friction and mass-independent tracking force. Perfect balance in all planes of motion.

U.L.M. Cartridge. Ortofoon TKS 52 E with elliptical stylus. (Optional and extra).

Dual belt drive. High reliability and long maintanance-free operation thanks to automatic speed pre-selection and the flat belt precision ground to 2/100 mm.

Pitch control. Fine speed control by means of the vario-pulley with a 6% control range.

Full size platter with damping soft rim mat.

 Two-scale anti-skating control with long precision spring. Specially calibrated to the low friction bearing of the U.L.M. Tonearms.

Pilot lift. A unique safety feature that automatically engages the cue control when the tonearm is lifted from its rest post and moved toward the record. The tonearm then remains suspended over the record until released by the cue control to begin play.

Automatic stop. This raises the tonearm at the end of a record and switches off the motor.

Automatic cover tild-hold with continuously variable tension.

Specifications:

Type: Semi-automatic Hi-Fi turntable

Motor: 16-pole synchronous

Drive System: Belt-drive

Speed: 33-1/3 and 45 rpm

Pitch Control: 6%

Wow and Flutter: 0,08 (DIN) / 0,05 (WRMS)

Rumble Unweighted S/N Ratio: 47 dB

Rumble Weighted S/N Ratio: 69 dB

Platter

Diameter : 304 mm

Weight : 0,9 kg

Tonearm Effective Mass: 5,6 g

Vertical Bearing Friction: 0,07 mN

Suitable for 1/2” Cartridge Systems: 4,5 – 10

Recommended Cartridge: TKS 52 E

Nominal Tracking Force: 15 mN

Effective Stylus Mass: 0,4 mg

Frequency Response: 10 – 25,000 Hz

Transfer Ratio: 3,5 mV/5 cms per channel at 1 Hz

Crosstalk Attenuation (at 1 kHz): 24 dB

Static Compliance:

Horizontal / Vertical: 25/20 µm/mN

Intermodulation Distortion: 0,9 %

Bass Trackability: 70 µm (300 Hz)

Treble Trackability: 0,6 % (10 kHz)

Power Requirement: 110/220/240 V AC 50/60 Hz

Dimensions (W x H x D):  440 x 134 x 368 mm ( 17-1/2” x 5-1/8” x 14-1/2”)

Finish: Satin-metalic

Cover: CH15

Philips FA-960

Specificatios

Power Output (acc.to FTC): 

100 W Continuous sine wave  at 8 Ω load (20-20,000 Hz, THD less than 0,03%)

125 W Continuous sine wave at 4 Ω load (20-20,000 Hz, THD less than 0,05%)

Power Output (acc.to IEC)

115 W Continuous  sine wave at 8 Ω load (63-12,500 Hz, THD less than 0,03%)

Power Output at 1 kHz, THD less than 0,7% (acc.to DIN):

At 8 Ω load :  115 W

At 4 Ω load :  180 W

At 2 Ω load :  250 W

IHF Music Power:

At 8 Ω load :  120 W

At 4 Ω load :  225 W

At 2 Ω load :  280 W

Total Harmonic Distortion:  0,008% (1 kHz)

Intermodulation Distortion:  0,03%

Power Bandwidth:  10 - 30,000 Hz (-3 dB)

Frequency Response:  40 - 20,000 Hz ±0,5 dB

Signal-to-Noise Ratio:  106 dB (weighted)

Channel Separation:  75 dB 91 kHz)

Damping Factor (at 8 Ω):  180 x

Input Sensitivity:

Phono MC :  0,25 mV/100 Ω

Phono MM :  2,5 mV/47 k Ω

Compact Disc :  150 mV/25 k Ω

Tuner :  150 mV/25 k Ω

Tape 1, 2 :  150 mV/25 k Ω

Aux 1, TV 1 :  150 mV/25 k Ω

Aux 2, Video 1 :  150 mV/25 k Ω

Outputs:

Tape:  150 mV/220 Ω

Loudspeakers:  2 x 4 - 8 Ω

Headphones:  8 - 1000 Ω

Tone Control:

Bass :  ± 10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Balance Control :  0 - 50 dB

Power Requirements:  220 V 50/60 Hz

Power Consumption:  360 W

Dimensions (W x H x D):  420 x 158 x 334 mm

Weight:  14 kg

Sharp DX-500

 Sharp DX-500H

Advanced Compact Disc Digital Audio Player:

3-way Search System,

Programmable Operation,

LED Display for Disc Information.

A Breathtaking Advance In Digital Audio Entertainment

A masterpiece of advanced digital audio design, the Sharp DX-500H Cd Audio player. Remarkable music precision and stunning operational sophistication are combined in one streamlined unit. A DC servo amplifier is used for the analogue part of the audio system and an aluminium die cast chassis is used for the mechanism to ensure high quality sound and stable playback. In addition to the improvements in audio quality and operational ease. Sharp has succeeded in bringing you the ultimate music playback freedom – a comprehensive array of programming and search capabilities. The DX-500H, the second digital marvel from Sharp, leads the new age of audio.

 Boasting a range of innovative audio features, the DX-500H delivers pure noise-free music never achieved with ordinary analogue players.

Error-correction system: The system compensates for dropout signals caused by disc defect or scratches, replacing digital signals to ensure optimum playback performance.

DC servo amplifier: Digital sound quality depends on analogue system of the player. The DC servo amplifier in the analogue system ensures flat frequency response, improved S/N ratio and remarkable low distortion.

Aluminium die cast chassis: Strong die-cast horizontal chassis eliminates mechanical vibration to maintain high sound quality.

Focusing servo system: The system balances disc-lens distance, to keep laser beam focused precisely on the disc surface.

Tracking servo system: Sharp's laser system is designed along innovative lines to give extra-precise tracking performance. Minutely-designed servo circuits ensure constant, accurate positioning of the laser while aluminium die-cast frame reduces mechanical vibration for optimum disc reading.

3-way serach system and programmable operations

Create your own music format: AMPS (Automatic Programmable Music Selector) lets you randomly select 15 of your choices from the disc’s 20 selections and program them in any order you like. Locate the music you want quickly and easily with APLD (Auto Program Locate Device) while APSS (Auto Program Search System) skips forward to locate the beginning of the current selection. You can enjoy immediate repeat play of an individual song or the entire disc with convenient repeat function.

Combined with APMS, this function allows you to listen to an entire programmed selection of music over again.

 The combination of Sharp's DX-500H CD player and PCM Technology enables live performance digital-age music never before achieved with ordinary analogue equipment. Dynamic range of 97 dB, wow and flutter too low to be measured, channel separation of 97 dB. It's all yours with the Sharp DX-500H.

The pick-up of the player requires pinpoint precision to read each tiny signal accurately. The DX-500H equipped with advanced, high-performance semiconductor laser diode technology features a state-fo-the-art laser pick-up system.

Time counter with 4-digit LED display: Times disc playback and gives you constantly changing disc playback time information with an easy-to-read 4-digit LED display. Synchronized with fast forward and rewind operations, the counter enables you to lackate any part of the disc swiftly and accurately.

20 LED indicators: Accurate disc information including the number of selections, programmed pieces and selection currently playing is available from these indicators.

Drawer-type front-loading disc table: With a touch of a button on the front panel, the disc table slides out. Just place the disc on the disc table and press the same button again and it slides in for playback. Operation is simple and accurate.

Headphone socket: For sophisticated private listening. With headphones connected the DX-500H provides the excitement of digital audio without disturbing anyone else.

Specifications

Audio Section

Number of Channels:  2-channels Stereo

Frequency Response:  5 - 20,000 Hz ±0,5 dB

Dynamic Range:  97 dB

Total Harmonic Distortion:  0,003% (at 1 kHz)

Wow and Flutter:  below measurable levels

Level Fluctuation:  below measurable levels 

Crosstalk:  97 dB (at 1 kHz)

Error Correction:  CIRC (Cross Interleave Reed-Solomon Code)

Impedance:

Line Out :  2,2V/10 k Ω

Headphones :  48 mW/8 Ω

Disc Section:

System Format:  Compact disc system

Outer Diameter:  120 mm

Inner Diameter:  15 mm

Track Pitch:  1,6 µm

Playing Time:  approx. 60 minutes

Sampling Frequency:  44,1 kHz

Quantization:  16-bit linear

Modulation:  EFM

General:

Power Source:  Ac 110/220/240 V, 50/60 Hz

Power Consumption:  40 W

Dimensions (W x H x D):  330 x 104 x 345 mm

Weight:  8,5 kg

Akai 1722W

 Akai 1722W Stereo Tape Recorder

Handy Compact Stereo Tape Recorder

The 1722W is a robustly constructed complete stereo tape recorder unit with built-in phono amp and large 5 x 7” speakers. Automatic Shut-Off. Instantly convertible to a full bodied Public Address System.

Self-Lubricating 2-Speed Induction Motor for Trouble-Free Operation

For watches and car engines, oil circulating self-lubricating motors are more practical … and for tape recorder motors as well.

Two oil circulating cellulose fiber mechanisms are installed in this high performing induction motor for long lasting trouble-free operation. Oil circulating speed is adjusted naturally according to motor revolutions and temperature. Thus, shaft rotation is always smooth and stable and various mechanical trouble resulting from oil circulation suspension does not occur. Further, these unique cellulose fibres act as filters to keep the oil clean during the circulating process for epoch making endurance.

Tape Selector Switch for Better Frequency Response

This model is equipped with a Tape Selector Switch facilitating the use of high performance wide range tape. Setting this switch according to the tape being used adjust the equalization for better frequency response characteristics.

 Speaker Switch Facilitates Monitoring During Recording or Playback

New 3-Way Speaker Switch (Mute/Recording Monitor, Normal, PA) provides proper signal output for private headphone listening or monitoring during recording, speaker output, or Public Adress System.

Quality Parts and Robust Construction

In keeping with Akai's top quality parts utilization policythe 1722W incorporates top quality parts and features robust construction and sturdy mechanism. Our dependable two lever control system ensures further durability.

Automatic Shut-Off

A special feature of this model is the Automatic Shut-Off function of the unit. When the Automatic Shut-Off Switch is set to On position, the power of the entire unit is cut at the enr of the tape. A very convenient feature should the reorder be left unattended.

Instantly Convertible To a Public Address System

For a full bodied P.A. System, simply set rear panel Speaker Switch to PA position and set recorder to recording mode. Microphones are used to activate the speaker system.

 Pause Control

The 1722W is equipped with pause control for momentarily suspending tape travel during reording or playback. Especially useful for editing tape during recording. Just lift the Pause Lever when a certain portion of the program is not desired. Pause control also permits optimum adjustment and balance of recording level prior to recording for consistent signal level input. Convenient Start Button release.

Built-In Equalizer Amplifer for Direct Recording or Playback with Phono Cartridge

Connection to the front panel Mic/Phono Jacks through an RCA/Mic plug connection cord and setting the rear panel Mic/-Phono Switch to Mic position activates the built-in phono equalizer amplifer for direct recording from a magnetic phono cartridge.

Built-In Speakers Plus Speakers Jack

Alough a handy compact model, the 1722W is equipped with two 5 x 7” built-in speakers for sufficient speaker output even where space is limited. Also equipped with Speaker Jacks for utilization of a larger speaker system if desired.

 Multiple Connections and Controls Include DIN Jack for Easy Connection with an External Amplifier

Line and DIN inputs and outputs connections and multiple controls facilitate varied operation. The DIN Jack can be used instead of Line Input and Output Jacks. This one cord connection system facilitates easy recording and playback through an external amplifier as the complex connection and disconnection of four separate cords is eliminated.

Tape Counter with Reset Button

Handy 3-digit Tape Cou ter with Reset Button provides a quick refrence for locating positiones on the tape.

Practical Built-In Reel Retainers

Convenient buil-in reel retainers firmly lock reels into place and provide equal reel tension. Easy to lock and release.

Specifications

Track System:  4-track, 2-channel stereo/monaural system

Reel Capacity:  up to 7” reel

Tape Speed:  7-1/2 and 3-3/4 ips (±2%)

Heads:  1 x recording/playback; 1 x erase

Motor:  2-speed induction motor

Fast Forward & Rewind Time:  80/100 sec. Using a 1200 ft tape at 60/50 Hz

Recording Capacity:  3 hours stereo recording using a 1800 ft tape at 3-3/4 ips

Wow and Flutter:

less than 0,14% RMS at 7-1/2 ips

less than 0,18% RMS at 3-3/4 ips

Equalization:  Correct equalization for playback of tapes recorded to NAB curve

Frequency Response:

Wide Range Tape:

30 - 21,000 Hz (±3 dB) at 7-1/2 ips

40 – 15,000 Hz (±3 dB) at 3-3/4 ips

Low Noise Tape:

30 - 18,000 Hz (±3 dB) at 7-1/2 ips

40 – 13,000 Hz (±3 dB) at 3-3/4 ips

Distortion:  less than 2% (1000 Hz „0” VU)

Continnuous Power Output:  2 Watt/channel, minimum RMS, at 8 Ω load impedance from 75-20,000 Hz, with no more than 2% THD

Signal-to-Noise Ratio:  better than 50 dB

Cross-Talk:  better than 60 dB [mono]; 45 dB [stereo]

Output Jacks:

Line :  1,23 V („0” VU) / 30 Ω 

Required load impedance :  more than 10 k Ω

Phone :  100 mV/8 Ω

Speaker :  2 W/8 Ω  each

Input Jack:

Microphone :  ,5 mV/100 k Ω

Line :  150 mV/330 k Ω

Din Jack :  1 V/15 mV

Speaker:  2 built-in 5 x 7” speakers

semiconductors:  16 Transistors; 4 Diodes

Power Requirement:  120 V, 60 Hz

Power Consumption:  50 W

Dimensions (W x H x D):  358 x 360 x 248 mm (14” x 14,1” x 9,8”)

Weight:  13,2 kg (29 lbs)