Marantz 2285B
1977-80r.

Ten model Marantza to kawał sprzętu, najwyższy model z serii 22xx - bardzo dobry prolog do serii 23xx,
Kawał mocy i przepiekny look. Ten Marantz GRA !!


General
Rarity Scarce
Retail Price 670
Ebay Low-bid $150.00
Designed in USA
Manufactured In Japan
First Year 1977
Last Year 1980
Wood Case WC-122
Silver Face Yes
Channels Two
Speaker Connections Main, Remote
Chassis Ground Knurled screw
AC Switch Yes
Fusing Rear deck, buss, 5 ampere
Switched AC Outlets One @ 100 watts
Unswitched AC Outlets One @ 200 watts
Power Source Details Dual Secondary power supply
Power Consumption 340 watts, 50 watts @ idle
Independent Power Supplies Dual Secondary only
Special Option 1 DLB1 Dolby FM Decoder (US Models only)

Physical
Panel Width 5 3/8
Panel Height 17 5/16
Width 17 1/4
Height 5 1/2
Depth 14 1/4
Weight 37.4 lbs, 42.9 packed for shipment

Amplifier
RMS Power Per Channel 85x2
Damping Factor @ Load Impedance 60 (at 20 Hz)
Total Harmonic Distortion (THD) 0.05%
Power Bandwidth 20 hz to 20 khz
Frequency Response +/- 0.2 dB 20 Hz to 20 KHz @ 1 watt
Intermodulation Distortion (IM) 0.05% @ 8 ohms, 0.10% @ 4 ohms
Input Impedance 33 Kohm
Input Sensitivity for Full Output 1.5 Volts
Output Impedance(s) 8 ohms to 4 ohms

FM Tuner
Gyro Tuning Yes
RF Sensitivity 1.8 uV
300 Ohm Binding Posts Yes
75 Ohm Binding Posts Yes
75 Ohm F Connector Yes
50 dB quieting sensitivity, Stereo 35 uV
50 dB quieting sensitivity, Mono 3.0 uV
Ultimate Quieting 78 dB @ 1000 uV
THD, Mono 0.30%
THD, Stereo 0.50%
Frequency Response 30 Hz to 15 KHz +/- 1.5 dB in Stereo
Hum and Noise 75 dB
Capture Ratio 1.0 dB at 65 dBf
IF Image Rejection 90 dB
IF Rejection 100 dB
Stereo Subcarrier Rejection 70 dB
Alternate Channel Selectivity (wide or normal) 080 dB
Spurious Rejection 100 dB
AM Carrier Rejection 55 dB
Stereo Separation at 1 kHz 50 dB
Mono Switch Yes
Signal Strength Meter Yes
Center Tuning Meter Yes
Multiplex Filter (Hi-Blend) Yes
Stereo Lamp Yes
FM Mode Lamp Yes
Multipath Listen Yes
Muting Switch Yes
Muting Adjustment Rear Deck
25 uS Deemphasis Switch (Dolby Associated) Yes
Dolby Fm Decoding Option Yes
Illuminated Dial Pointer Yes

AM Tuner
Alternate Channel Selectivity 46 dB
IF Rejection 75 dB
Image Rejection 75 dB
THD 0.4%
Signal to Noise Ratio 54 dB
Spurious Response Rejection 85 dB
Signal Strength Metering Yes

Preamplifier
Multiple Bass Adjustments Yes
Multiple Midrange Adjustments Yes
Multiple Treble Adjustments Yes
Tone Control Defeat Yes
Bass Turnover Options Yes
Treble Turnover Options Yes
High Filter Yes
Low Filter Yes
Gain Control Yes
Loudness Contour Yes
Mono L, R, L+R (discrete buttons)
Balance Knob
Number of Tape Monitors Two
Tape to Tape Dubbing Via front panel or rear, 1 to 2 or 2 to 1
Auxillary Input Source Yes
Phono Input Source Yes
2nd Phono Input Source Yes
Illuminated Source Indicators Yes
Tuner Source Input Am/FM
Tape Monitor Yes
2nd Tape monitor Yes
Preamp to Amplifier Jumper(s) Yes
Headphone Jack(s) Yes
Speaker Selection Nomenclature 1, 2