Super-Clean
Stereo FM/AM Receiver
How much
does good clean electronics circuit design contribute to better tonal quality?
Find out by test-listening to the all-new Pioneer SX-550. we've used
extra-large, custom-designed integrated printed circuit board in the preamp and
tuner sections to almost entirely eliminate shielded wire connections inside.
This in turn cuts the loss of vital high frequency signals to practically zero,
greatly boosting tonal realism.
A
particularly good RIAA equalization (±0,3 dB) and equally good S/N and dynamic
range performance have been achieved in the SX-550's phono equalizer. The CR
type tone control circuitry a versatile two-deck tape monitor/dubbing facility,
FET and IC equipped FM/AM section (with PLL IC stereo demodulator) and other
superior features make the SX-550 still more of a value in its class.
Continuous
power output is a super-steady 20 watts per channel , min. RMS, at 8 ohms from
20 to 20,000 Hz, with no more than 0,3% total harmonic distortion. The good,
clean design of the pioneer SX-550 inside and out does make a difference. It's
a difference you can hear at your Pioneer Hi-Fi system.
Specifications
Power
Amplifier Section
Continuous
Power Output (both channel driven, 20-20,000Hz): 20 watts per channel at 8 Ω
Total
Harmonic Distortion (20 Hz to 20 kHz, from Aux)
Continuous
Rated Power Output: no more than 0,3%
10
watt per channel output, 8 Ω: no more than 0,07%
1 watt
per channel output, 8 Ω: no more than 0,07%
Intermodulation
Distortion (50 Hz : 7 kHz = 4:1 from Aux)
Continuous
Rated Power Output: no more than 0,5%
10
watt per channel output, 8 Ω: no more than 0,07%
1 watt
per channel output, 8 Ω: no more than 0,1%
Damping
Factor (20 Hz-20 kHz): 25
Input
Sensitivity/Impedance
Phono
: 2,5 mV/50 k Ω
Mic :
7,5 mV/50 k Ω
Aux :
150 mV/50 k Ω
Tape
Play 1 and 2 : 150 mV/50 k Ω
Tape
Play 2 (DIN) : 150 mV/50 k Ω
Phono
Overload level (THD 0,1%): 200 mV (1
kHz)
Output
Level/Impedance
Tape Rec 1
and 2 : 150 mV
Tape
Rec 2 (DIN) : 30 mV/80 k Ω
Speaker : A,
B, A+B
Headphone :
Low Impedance
Frequency
Response:
Phone (RIAA
equalization) : 30 Hz to 15,000 Hz ±0,3 dB
Aux, Tape
Play : 20 Hz to 60,000 Hz +0,5 -1 dB
Tone Control
Bass : +9
dB, -10 dB (at 100 Hz)
Treble : ±8
dB (at 10 kHz)
Loudness
Contur (Volume Control at -40 dB): +6 dB
(100 Hz); +3 dB (10 kHz)
Hum and
Noise (IHF, short-circuited, A network, rated power)
Phono : 70
dB
Aux, Tape
Play : 90 dB
FM Section
Usable
Sensitivity [Mono/Stereo]: 11,2 dBf (2,0
µV) / 20,0 dBf (5,5 µV)
50 dB
Quieting Sensitivity [Mono/Stereo]: 18,3
dBf/(4,5 µV) / 39,2 dBf (50 µV)
Signal-to-Noise
Ratio at 65 dBf [Mono/Stereo]: 70 dB/ 65
dB
Distortion
at 65 dBf
100 Hz
[Mono/Stereo] : 0,15% / 0,3%
1 kHz
[Mono/Stereo] : 0,15% / 0,3%
6 kHz
[Mono/Stereo] : 0,4% / 0,4%
Frequency
Response: 30 Hz to 15,000 Hz +0,2 -2,0 dB
Capture
Ratio: 1,0 dB
Alternate
Channel Selectivity: 60 dB
Spurious
response Ratio: 75 dB
Image
response Ratio: 65 dB
IF Response
ratio: 90 dB
AM
Suppression ratio: 50 dB
Muting
Threshold: 14 dBf (2,8 µV)
Stereo
Separation: 40 dB (1 kHz), 30 dB (30 Hz
- 15 kHz)
Subcarrier
Product ratio: 40 dB
SCA
Rejection Ratio: 40 dB
Antenna
Input: 300 ohms balanced / 75 ohms
unbalanced
AM Section
Sensitivity
IHF [ferrite /external antenna]: 300
µV/m / 15 µV
Selectivity: 35 dB
Signal-to-Noise
Ratio: 50 dB
Image
Rejection: 40 dB
IF
rejection: 65 dB
Antenna: Built-in Ferite Loopstick Antenna
Miscellaneous
Semiconductors: 3 FET; 5 ICs; 28 Transistors; 21 Diodes
Power
Requirements: 110 -120 V, 220-240
V, 50/60 Hz
Power
Consumption: UL; 80 W, 185 W (max); CSA;
155 VA
Dimensions
(W x H x D): 448 x 141 x 307 mm (17-4/8
x 5-9/16 x 12-1/16 inches)
Weight: 9,4 kg (20 lb 11 oz) net
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