Pioneer tx 900 brochure

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PIONEER IX 9". .
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PROFESSIONAL-TYPE TUNER FOR PERFECT RECEPTION
The TX-900 is not only one of Pioneers finest tuners but one of the most advanced available today for home stereo
enthusiasts. It has all solid state circuitry and contains such features as 3 FETs and 2 RF stages in the front end, a radically

new bright spot indicator for visual tuning, and 2 crystal filters and 4 lCs in the IF section.
Anyone including this superb new tuner in his stereo system will be rewarded by years of the very best AM/FM reception.

PIUNEER WORLD-FAMOUS BRAND IN Hl-Fl REPRODUCTION

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FEATURES OF THE TX-QOO

FM SECTION WITH MU LTIPLEX

By employing 3 FET's and a 4-gang variable capacitor in the front
end section the FM tuner is able to give extremely high sensitivity,
improved signal to noise ratio, and utterly stable reception.

If noise should arise, due to insufficient antenna input for FM
stereo, Pioneer has cleverly included a special noise filter which
can be used to eliminate unwanted multiplex broadcast noises.

The all solid state circuitry is among the most advanced in the
world; including FM multiplex to enable you to tune in on stereo
broadcasts with dynamic results. In this multiplex circuit, a time
switching de-modulator boosts stereo performance by increasing
frequency response and allowing for clear reception of high fidelity
sounds. Auto switching provides effortless selection of stereo broad-
casts. Cross modulation has been eliminated in the front end.

IF SECTION WITH 2 CRYSTAL FILTERS

Pioneer has used 2 crystal filters in the IF section to give the TX900
remarkable selectivity and an excellent capture ratio. The hard
limiting IF section has extra stability and far better channel separa-
tion than usual, all thanks to the use of 4 IC's.

SELECTIVE MUTING

Besides the noise filter for FM stereo, the TX-900's circuitry also
incorporates a unique adjustable muting switch which can totally

eliminate interchannel noises. The unique feature of this switch is

that the cut-off level is continuously variable so that while the

noise can be supressed to any level required you can still select the
weakest signals.

PRECISE STATION SELECTION

To put you on both AM and FM bands Pioneer's new bright spot
indicator lights up at the place where a signal is being received.
There are then twin tuning meters to put you exactly on the station.
These are located at the left of the dial scale. One tells you FM
signal strength and the other shows you the precise tuning point of
the signal. These useful meters allow you to obtain a point where
signal strength has the minimum distortion, maximum fidelity and
channel separation, and where the signal to noise ratio is ideal.

AM TUNER

In the AM section there's a separate oscillator and mixer with 1 RF
stage to handle strong signals with less spurious interference.

A DESIGN TO SUIT ITS FEATURES

The TX900 is a beautifully designed unit externally also. End
pieces are of expensive Brazilian rosewood while controls are
elegantly set on a brushed chrOme panel. The tuning control is on a
wide multi-colour illuminated dial scale and is extra large for fine
adjustments. On the back is an adjustable ferrite bar antenna; an
easily switchable line voltage selector so you can use the TX-900
anyplace in the world; and a variety of jacks to give this set the
versatility to match the performance of any other units in your
system.

SPECIFICATIONS OF THE TX-900

FM SECTION

Circuitry: Front end using 3 FETs and 2 RF stages,lF

section using 2 crystal filters and 4 IC's

30 dB (40 Hz to 8 kHz)
Stereo Indicator:

Fle/MONOautomatic selec-

Frequency Range:
Sensitivity:

Capture Ratio:

Image Rejection Ratio:
Selectivity:

S/N Ratio:

Harmonic Distortion:
Output Voltage:
Antenna Input:

Muting with level Control:

Output Level Control:
MULTIPLEX SECTION
Circuitry:

Channel Separation:

For a really advanced stereo set-up, the TX900 tuner is designed to combine to perfection with the SAQOO integrated amplifier.

Pl [INEER ELEBTRIINII. BflRPflRATI UN
15-5, 4-chome, Ohmori-nishi, Ohta-ku, Tokyo, Japan

87.5 to 108 MHZ

1.7 uv (IHF)

1.5 dB (at 82 MHZ)

95 dB (at 82 MHZ)

65 dB

60 dB (30% mod), '7 dB (IHF)
0.3% (400 -Iz, 100% mod)

1 V (400 l-z, 30% mod, adjustable)
3000 (balanced)

separate control of each channel

Time switching type de-modulator
38 dB (at 1 kHz)

' . ,fiéxzmosr

tor:

MPX Noise Filter:

AM SECTION

Frequency Range: 525 kHz to 1605 kHz
Sensitivity: 10 11V (IHF)

Image Rejection Ratio: 70 dB (1000 kHz)

IF Frequency: 455 kHz

Output Voltage:
Antenna:
Output level Control:

POWE R SUPPLY, etc.

Power Supply:

Power Requirements:
Power Consumption:
Dimensions (Overall):

Weight:

1 V (400 Hz, 30% mod, adjustable)
Ferrite bar antenna
Separate control of each channel

Full-wave rectifier using silicon diodes

110, 117, 130, 220, 240 volts (switchable)
14 VA, 20W
15-15/16(W)x5-1/2(H)x14(D)
405(W)x140(H)x356(D)mm

17.2 lbs 7.8 kg

6909-0K5 Printed in Japan

PIONEER ELECTRONICIEUROPEiAG.
59, Forch Strasse, 8032 Zurich, Switzerland

PIONEER ELECTRONICS U.S.A. CORPORATION
140 Smith St., Farmingdale, L.l., N.Y. 11735, U.S.A.