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

Pioneer TX-1000

The TX-1000 from Pioneer is a one of a kind stereo component, one of the new breed of AM/FM tuners that offers professional sophistication, sensitivity and extra-low distortion along with a host of new, advanced features for outstanding FM reception. Complete with the very latest design components and transistors, the TX-1000 provides all the requirements that the audio enthusisat demands in a tuner - and then some. MOS-type FETs in the front-end, an IF section featuring ultra-sharp crystal filters and ICs with outstanding limiting effect provide unsurpassed capture ratio and selectivity. The wide linear dial scale works with two sensitive tuning meters for pinpoint precision, and is complemented by multipath terminals and other refiend features for perfect reception. Both AM and FM have separate output level controls. And even without an amplifier you can still listen to this unit through headphones plugged into the headphone jack. The Pioneer TX-1000 puts it all together for convenience and superb reception. Read on to learn why it's the finest component of its kind for your stereo money.

Designed to play a key role in obtaining optimum reception even in areas of weak signals, the front-end section of the TX-1000 provides excellent sensitivity and signal-to-noise ratio as well as outstanding image rejection, cross-modulation rejection and spurious signal rejection.

The circuitry employs four gang variable capacitors. In the first stage dual gate MOS-type FET is used, while the second stage features junction-type FET. Additionally, FETs are also used in the mixing circuit, which complements the stabilized colpitt's-type mixing oscillator. The result of these components is an image rejection ratio of 90 dB, spurious response of 95 dB and excellent interference rejection characteristics. The S/N ratio is also improved, and sensitivity is an excellent 1,7μV. All of these key front-end features add up to provide outstanding FM reception, even in weak signal areas, with freedom from signal overlap and noise.

The FM IF section determines the tuner's effective selectivity. In the TX-1000 the IF section circuitry employs four ICs and a pair of crystal filters and IC filter.

The ICs provide an excellent limiting effect for stable performance, while the outstanding selectivity of the crystal filters assures sharp signal reception. The result is a co tant performance unaffected by temperature, humidity or age and ideal selectivity characteristics of over 70 dB and a 1,5 dB capture ratio.

Simply flicking the noise filter to the ON position will corect high-frequency MPX noise which is often created during reception of FM stereo broadcasts.

The large TX-1000 dial scale was specially designed to be read at a glance. The linear design is not only easy-to-read, but also brings all stations closer together for easy tuning.

The TX-1000 uses two extra-large tuning meters a signal strength meter and a center tuning meter. This permits precision tuning for minimum noise and maximum stereo separation.

The TX-1000 features separate AM and FM outout level controls. Both can be set to compensate for differences in AM and FM signal strengths, so that the amplifier's master volume control does not require readjustment when the selector is wsitched.

The TX-1000 is a handsome stereo component with stylish front panel and natural wooden case. Dimensions and styling are matched to complement other Pioneer hi-fi components to let you create an installation of systemized elegance.


FM tuner section

Frequency Range: 87,5 to 108 MHz

Usable Sensitivity (IHF): 1,7μV

Capture Ratio (IHF): 1,5 dB

Selectivity (IHF): more than 70 dB

Image Rejection: more than 90 dB (98 MHz)

IF Rejection: more than 100 dB (90 NHz)

Spurious Rejection: more than 95 db (98 MHz)

AM Suppression: 55 dB

Signal-to-Noise Ratio: 70 dB

Harmonic Distortion:

Mono: less than 0,3% 100% mod.

Stereo: less than 0,5% 100% mod.

Tuning Indicator: Signal strength type and center tunning type

Muting: Switchable to ON/OFF with level control

Stereo Separaton: more than 40 dB (1 kHz)

Sub Carrier Suppression: more than 50 dB

Noise Filter: SWitchable to ON/OFF

Output Voltage: Controlable from 80 mV to 2,4 V

Antenna Input: 300Ω balanced and 75Ω unbalanced

Multipath Terminals: Vertical and horizontal

AM Tuner section

Frequency Range: 525 to 1,605 KHz

Usable Sensitivity (IHF): 8μV

Selectivity (IHF): more than 30 dB

Image Rejection: more than 80 dB (1,000 KHz)

IF Rejection: more than 75 dB

Signal-to-Noise Ratio: more than 55 dB

Output Voltage: Controlable from 60 mV to 1,8 V

Antenna: Built-in ferrite loopstic antenna

Audio Section

Recording Output/Impedance: 750 mV/2,5 kΩ (FM 100% mod)

Headphone Output: 30 mW/8Ω (FM 100% mod.)

Level Control: AM and FM

Semiconductors: 4 FETs; 6 ICs; 30 Transistors; 19 Diodes

Power Requirements: 110 - 240 V 50/60 Hz

Power Consumption: 27 watts

Dimensions (W x H x D): 430 x 145 x 345 mm (16-15/16 x 5-11/16 x 13-9/16 inches)

Weight: 8,6 kg (19 lb), without package

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