Pioneer TX-5500II tuner

Truly High Fidelity Performance in Amand FM Stereo in An Advanced IC-Equipped Tuner in Attractive Price Range

Pioneer stays ahead in rich musical performance and interference-free reception when it comes to AM/FM stereo tuners in every price category. The TX-5500II is no exception, despite its attractively low price. The latest Pioneer advances in circuitry as perfected by our research and development teams are employed, often in microcircuit IC forms, to increase sensitivity and selectivity, reduce the Signal-to-Noise and Distortion irregularities, and improve overall tonal quality. An example is the PLL (Phase-Locked Loop) IC used in the FM stereo multiplex demodulator section. Another is the FET and 3-gang variable capacitor construction of the FM front end for more sensitivity. Still another is the use of the ceramic filter-plus-IC from of the FM IF section to provide pinpoint selectivity. All this pays off in better tonal quality, less distortion and more precise station selection in a functional, versatile tuner at a popular price. It's the TX-5500II from Pioneer, a good way to stay ahead in hi-fi.

 

FM Front End is stable but highly sensitive

You won't find better performance for the price. Pioneer boosts FM sensitivity to 10,7 dBf (1,9 µV) IHF. In the TX-5500II by using a low-noise FET and a 3-gang variable capacitor in the stable FM front end. Interference is rejected and the Signal-to-Noise Ratio is improved

Exclusive IF circuit uses ceramic filters and IC

Stability and limiter characteristics are improved while at the same time selectivity and capture ratio are boosted. This results from Pioneer's use of an exclusive high-performance IC and only those ceramic filters which can deliver the best phase linearity in the IF circuit.

Stereo separation is more stable with PLL

Outside influences such as changes in temperature and moisture can never affect the stereo FM multiplex demodulator because we use a Phase-Locked-Loop (PLL) circuit in IC form. The circuit has distinguished Automatic Gain Control (AGC) characteristics and stable detector output, factors which pay off in better stereo FM performance in strong signal areas.

Super-simple tuning system for more accuracy

The clean looks of the Pioneer TX-500II are functional, too. The FM-linear dial scale, a smooth-turning, flywheel balanced tuning mechanism and a combination signal-strength (FM/AM) and center-of-channel (FM only) meter make precision tuning simple.

A valuable investment in versatility

FM muting is automatically provided when you switch to FM Auto. The FM Mono positions lets you select more distant stations. And in the AM position, a high-integration AM circuit goes on line to bring you low-noise AM performance.

 

Specifications

FM Section

Circuitry:  1 FET; 1-stage RF amplifier; 3-gang variable capacitor, 5-stage limiter, PLL MPX

Usable Sensitivity

Mono :  10,7 dBf (1,9 µV)

50 dB Quieting Sensitivity

Mono :  14,0 dBf (2,8 µV)

Stereo :  38,0 dBf (44 µV)

Signal-to-Noise Ratio (st 65 dBf)

Mono :  72 dB

Stereo :  68 dB

Distortion (at 65 dBf)

100 Hz :  0,15% (Mono); 0,3% (Stereo)

1 kHz :  0,15% (Mono); 0,3% (Stereo)

10 kHz :  0,2% (Mono); 0,6% (Stereo)

Frequency Response

Mono :  30 - 10,000 Hz (+0,2 dB; -0,5 dB)

Stereo :  20 - 15,000 Hz (+0,2 dB; -1,0 dB)

Capture Ratio:  1,0 dB

Alternate Channel Selectivity:  50 dB

Spurious Response Ratio:  75 dB

Image Response Ratio:  60 dB

IF Response Ratio:  90 dB

AM Suppression Ratio:  50 dB

Muting Threshold: 10,0 dBf (1,7 µV)

Stereo Separation:  35 dB (1 kHz); 30 dB (30-15,000 Hz)

Subcarrier Product Ratio:  40 dB

SCA Rejection Ratio:  62 dB

Antenna Input:  300 Ω  (Balanced); 75 Ω  (Unbalanced)

AM Section

Circuitry:  1-stage RF amplifier, 2-gang variable capacitor

Sensitivity:

IHF (Ferrite Antenna) :  300 µV/m

IHF (External Antenna) :  15 µV

Selectivity:  35 dB

Signal-to-Noise Ratio:  50 dB

Image Response Ratio:  40 dB

IF Response Ratio:  70 dB

Antenna:  Built-in ferrite loopstick antenna

Audio Section

Output Level/Impedance

FM (100% Mod.) :  650 mV/3,5 k Ω

AM (30% Mod.) :  150 mV/5,1 k Ω

Semiconductors:  1 FET: 3 ICs: 6 Transistors; 6 Diodes

General

Power Supply:  120 V 60 Hz

Power Consumption:  11 watts

Dimensions (W x H x D):  380 x 124 x 269 mm (14-31/32" x 4-7/8" x 10-19/32")

Weight:  3,5 kg (7 lb 11 oz)