What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59

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.
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)

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