Here are
sherwood's most advanced receivers. Unparalleled command enters for the finest
high fidelity music systems. Featured are Sherwood's permanently aligned
Ceramic FM IF filtering system, hermetically sealed microcircuits and Field
Effect transistors to capture clear, distortion-free FM with utmost
reliability. Built-in Dynaquad 4-channel matrixing circuit gives you thrilling
four-dimensional sound at the touch of a finger. Choose AM/FM stereo or FM
stereo only. Both offer the same outstanding features and quality.
Enjoy the
operating ease provided by seven push buttons that control the main or remote
stereo speakers for operation independently or together (at the flick of a rear
panel switch, these pushbuttons activate front and rear speakers for your
Dynaquad 4-channel system); Loudness contour; narrow band FM "Hush"
circuit; high filter; tape monitor; and 4-channel decoder (which doubles as a second Tape Monitor).
Additionally Sherwood's unique front-panel tape jack (plus rear panel tape
jacks) provide simultaneous recording on two recorders or dubbing from one
recorder to another. Stereo headphone jack, too, for private listening. A
large, illuminated zero-center tuning meter pin points FM turning to perfection.
Sherwood FM
reception is legendary, thanks to four-gang tuning capacitor, pre-aligned
Ceramic IF filters, microcircuits, and the synchro-phase FM limiter/detector
that provide pace-setting alternate-channel selectivity (65 dB), outstanding
capture ratio (1,9 dB) and Am rejection (over 60 dB). Field-effect transistors
in RF and mixer stages enable -95 dB spurious response rejection. With less
than 0,15% FM distortion, Sherwood's clarity of sound is unsurpassed.
Power to
spare! With 60 +60 watts RMS, 8 ohms from 20 to 20,000 Hz at 0,3% total
harmonic distortion, these Sherwood receivers can drive two sets of stereo
speakers plus mono extension speakers without strain. Direct-coupled output
with Electronic Relay Protection circuit combine widest power bandwidth with
maximum protection for your speakers.
Utilizing
all-silicon transistors, Sherwood receivers achieve a reliability of
performance backed by a full 3-year warranty on all parts. And Sherwood
packages this superlative performance in a distinctively-styled, easy to
operate receiver that fits in any decor. Whatever your wants-power,
performance, beauty - Sherwwod paces the field.
Special
Features FM Tuner
Four gang
tuning capacitor
Solid-State
Ceramic FM IF Filtering
FET RF and
mixer stages
Hermetically-sealed
Micro-circuit IF and Synchrophase FM Limiter?Detector
Flywheel-assisted
velvet tuning
Dial
scale 7 ¾ inches long, 0,2 MHz
calibrations
Exclusive
FET FM Inter-channel/side-band hush
Illuminated
Zero-center tuning meter
Illuminated
dial pointer
Noise-protected
automatic FM Stereo/Mono switching at 8 µV
Triple-section
AM tuner (S-7900A only)
Specifications
FM Tuner
Section
FM
Sensitivity (IHF): 1,7 µV (-30 dB
noise&dist)
Signal-to-Noise
Ratio: -70 dB
Capture
Ratio: 1,9 dB
Suppression
of AM: -60 dB
Tuning
Range: 87,5 to 108,5 MHz
Distortion: 0,15% at 100% Mod.
Spurious
Response Rejection: -95 dB
Stability: ±15 kHz (±0.015%)
Image
Rejection: -80 dB
IF
Rejection: -90 dB
Alternate
Channel Selectivity: 65 dB
Stereo
Separation: 40 dB at 1 kHz
Frequency
Response [Stereo/Mono]: 20 - 15,000 Hz /
20 - 20,000 Hz ±1 dB
Antenna: 300 Ω balanced or 75 Ω unbalanced
AM Tuner
Section
Sensitivity: 4 µV at 30% mod. For 10 dB S/N
Selectivity: 36 dB (at ±10 kHz)
Frequency
Response: 4,0 kHz (at 4,0 kHz)
Tuning
Range: 530 to 1625 kHz
Image
Rejection: -80 dB at 1MHz
Antenna:
Ferrite Rod (rotatable), High Imp. Input
Amplifier
Section
Power Output
(IHF): 280 watts total
Power
Output-RMS (both channel driven)
At 4 Ω : Music Power 90 Watts (1 kHz)
At 8 Ω : Music Power 65 Watts (1 kHz)
At 8 Ω : Music Power 60 Watts (20 - 20,000 Hz)
Harmonic
Distortion: 0,3% at 8 Ω Rated Output, 0,10% at 10 watts
Intermodulation
Distortion: 0,3 % at 8 Ω Rated Output, 0,10% at 10 watts
Stereo
& Mono Speaker Output Impedance: 4,
8 or 16 Ω
Stereo
Headphone Output: High or Low Impedance
Stereo
Recording Output: 800 mV, 2 k Ω
Power
Bandwidth: 7 - 60,000 Hz 0,5% Dist.
Frequency
Response:
Aux: 20 Hz - 20 kHz ±1 dB
Phono : RIAA Standard
±1,5 dB
Damping
Factor: 30 : 1 at 8 Ω
Bass
Control: ±13 dB at 100 Hz
Treble
Control: ±13 dB at 10 kHz
Input
Sensitivity (for rated output):
Phono : 1,5
mV; 3,8 mV; 8,0 mV
AUX : 150 mV
Input
Capability for 1 % Dist:
Phono : 100
mV
AUX : 2,5 V
Hum and
Noise (IHF):
Phono : -65
dB
AUX : -80 dB
Vol. Control
Min> : -90 dB
Crosstalk: -40 dB at 1 kHz
General
Power
Requirements: 115 - 125 V, 50/60 Hz, 10
to 100 W fused
AC
Outlets: 100 W switched
Dimensions
(W x H x D): 16¼ x 5¼ x 14 inches
Weight
(Shipping): 30 lbs
Optional
Walnut Case: W-10 (17 x 14 x 6¼ inches)