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





Nakamichi BX-125E

The BX-125 follows the Nakamichi BX series design philosophy of pursuing the highest performance at the lowest cost.

Employing a special Sendust laminate core record/playback head and a single capstan transport, the BX-125 provides wide, flat frequency responsenout of 20 kHz. Dolby B and C noise reduction are both included guaranteeing excellent signal to noise ratio. And like any other Nakamichi deck, 30 critical parameter adjustments are made on each unit to provide the accurate record/playback performance you have come to expact from, nakamichi.

Utilizing the most useful features from both the BX-150, the BX-125 is further testament to Nakamichi's committment to creating the best sounding beat quality cassette deck at an affordable price.

Features

Microprocessor Controlled Sisngle Capstan Silent Mechanism with remarkably low flutter.

Sendust Laminate Core record/Playback Head for exceptionally wide, flat frequency response.

Dual-Gap Ferrite Core Erase Head with excellent high-frequency characteristics

Low-Distortion, Low-Noise Recording, and Playback Amp.

Dual-Speed Master Fader Control for professinal fade-ins and fade-outs fingertip control>

Auto Repeat playback for repeat listening of the entire side of a tape or any section between a preset "000" tape counter position and of the tape, when used in combination with the Memory Stop function.

Memory stop for stopping the tape automaticay fromrewind at a preset "000" tape counter position

Dolby B-Type NR with ca. 10 dB noise reduction in the high frequency range and Dolby C-type NR with ca. 20 dB noise reduction in the critivcal 2 kHz - 8 kHz range, the range where the human ear is most sensitive to noise.

LED Pek level Meters with wide range of -30 dB to +7dN

MPX Filter to cut the 19 kHz Fm broadcast pilot signal (defeatable)

One-Touch Record Standby

Left/Right Record Level Controls

Timer Recording/Playback

Output Level Control

3-Digit Mechanical Tape Counter

3-Position Tape Selector

Output Level Control

Headphone Jack

Black and Silver versions available for matching other components.

Specifications

Track Configuration: 4 tracks/2-channel stereo

Heads: 2 (1 x erase, 1 x record/playback)

Motors:

Tape Transport:

1 x DC servo motor (capstan drive),

1 x DC motor (reel drive)

Power Source: 100, 120, 120/220-240, 220 or 240V AC; 50/60 Hz

Power Consumption: 23 W max.

Tape Speed: 1-7/8 ips. (4,8 cm/sec.) ±0,5%

Wow-and-Flutter:

Less than ±0,11% WTD Peak;

Less than 0,06% WTD RMS

Frequency response: 20 - 20,000 Hz

Signal-to-Noise Ratio:

Dolby C-Type NR on [70 μs, ZX tape] Better than 68 dB (400 Hz, 3% THD, IHF A-WTD RMS)

Dolby B-Type NR on [70 μs, ZX tape] Better than 62dB (400 Hz, 3% THD, IHF A- WTD RMS)

Total Harmonic Distortion:

Less than 1,0% (400 Hz, 0 dB, ZX tape);

Less than 1,2% (400 Hz, 0 dB, SX, EXII tape)

Erasure: Better than 60 dB (100 Hz, +10 dB)

Separation: Better than 36 dB (1 kHz, 0 dB)

Crosstalk: Better than 60 dB (1 kHz, 0 dB)

Bias Frequency: 105 kHz

Input (Line): 50 mV/40k ohms

Output

(Line): 0,5 V (400 Hz, 0 dB, output levelcontrol at max.) 2,2k ohms;

(Headphones): 2,2 mW into 8 ohms (400 Hz, 0 dB, output level control at max.)

Fast-Wind Time: Approx. 80 sec. (with C-60 cassette)

Dimensions: (WxHxD) 430 x 100 x 250 mm, ( 16-15/16 x 3-15/16 x 9-7/8 inches)

Weight: 5,0 kg, (11 lbs.)

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