Bose Model 550 receiver

The new, moderately prieced Bose Model 550 AM/FM Stereo Receiver brings you Bose technology and research wrapped up in an affordable, innovative package. It includes a direct-coupled amplifier that delivers a solid 40 watts of RMS power per channel - enough to drive almost any loudspeaker. It has an excellent AM/FM tuner section for clean reception. And exclusive Bose Source and Room Compensation Controls let you adjust for recording characteristics and for room acoustics. These controls make it easy for you to remove mid-range boominess without losing your deep bass. Try that with a conventional receiver.

The Bose 550 Receiver is designed to drive any speakers that suit your taste and budget. And it contains a unique feature you'll really appreciate when you upgrade your system. More and more customers tell us their first loudspeakers are interim units and that one day they hope to invest in a Bose 901 Series Direct/Reflecting Loudspeakers System.

Ownwrship of the 550 Receiver brings that day much closer, because the receiver has a built-in 901 Active Equalizer that gives you a significant savings when you purchase 901 speakers.

Specifications

Power Output:  40 watts per channel (minimum RMS continuous power, with both channels driven into 8 ohms, T.H.D. less than 0,3% from 20 Hz to 20 kHz)

IHF power Bandwidth:  20 Hz - 20 kHz (both channel driven, T.H.D. less than 0,19%)

Intermodulation Distortion:  0,09% IHF (60 Hz /7 khzmixed 4:1 at rated output)

Total Harmonic Distortion:  0,09% from 0,5 to 40 watts

Frequency Response:  20 Hz - 20,000 Hz ±0,5 dB

Phono RIAA:  ±0,5 dB

Input Sensitivity/Impedance:

Phono :  2,75 mV/47 k Ω

Auxx, Tape :  150 mV/50 k Ω

Signal-to-Noise Ratio:

Phono :  76 dB (A weighted, below rated output, inputs shorted)

Amplifier:  87 dB (A weighted, below rated output, inputs shorted);  91  dB (A weighted, below rated output, min. Volume)

Channel Separation: 

Aux, Tape:  60 dB at 1 kHz

Phono :  55 dB at 1 kHz

Phono Overload:  100 mV

Loudness Control : 

8 dB at 100 Hz ±2 dB

6 dB at 12 kHz ±2 dB

Source Room Compensation Controls:

Low Filter:

-3 dB at 100 Hz

-7 dB at 20 Hz

Low Frequency Control

Narrow Position

±8 dB at 140 Hz (center frequency)

±1 dB at 20 Hz and 1 kHz

Wide Position

±3 dB at 350 Hz

±8 dB at 50 Hz

High Frequency Control

±8 dB at 15 kHz

±3 dB at 2,2 kHz

FM Tuner

IHF Usable Sensitivity: 

Mono :  2,0 µV (11,25 dBf)

Stereo :  3,5 µV (16,11 dBf)

50 dB Quieting Sensitivity: 

Mono :  3,8 µV (16,82 dBf)

Stereo :  40 µV (37,27 dBf)

Frequency Response:  30 Hz - 15 kHz  +1, -3 dB

Signal-to-Noise Ratio (65 dBf):

Mono :  65 dB

Stereo :  60 dB

Total Harmonic Distortion (65 dBf):

Mono :  0,25%

Stereo : 0,50%

Capture ratio:  1,9 dB

Alternate Channel Selectivity:  60 dB

Spurious Response Rejection:  80 dB

Image Rejection:  65 dB

AM Rejection:  50 dB

Stereo Separation (1 kHz):  40 dB

AM Tuner

20 dB Usable Sensitivity:  350 µV/M w /ferrite loopstick

Adjacent Channel Selectivity:  35 dB

Distortion:  0,9% 9400 Hz at 30% modulation)

Image Rejection:  37 dB

IF Rejection:  45 dB

Signal-to-Noise Ratio:  40 dB

Power Requirements:  120 Volts AC, 60 Hz or 240 Volts AC, 50 Hz

Power Consumption: 360 watts at rated power

AC Outlets:  1 x Switched, 1 x Unswitched ( 400 watt max)

Dimensions (W x H x D):  464 x 146 x 311 mm

Weight:  7 kg (15,5 lbs)