Special Features of
the CA-2010
DC Power
Amplification with Switched Class A and Class B Operation
The power amplifier
section makes true DC performance (to zero Hz) available, featuring ultra low
distortion first stage Yamaha dual-FET differential amplification, parallel
push-pull circuitry and SEPP output, with choice of Class A abd Class B
operation at equivalent volume levels.
Superb Phono
Equalizer Amplifier
The equalizer uses
specially matched Yamaha low noise FETs in a differential amplifier first stage
and features complementary SEPP output stage configuration to give an S/N of 96
dB and phono dynamic range up to 310 mV and RIAA deviation within ±0,2 dB
Ultra Low Noise MC
Head-Amp IC
This offers S/N
comparable with that obtained by conventional equalizer amplifiers for high
output MM cartridges. Switching between MC and MM cartridge is on the front
panel.
Low Noise, Low
Distortion Tone Control Amp
First stage
differential FET amplifier and complementary SEPP output stage in the NF-type
tone controls gives extremely low noise and distortion.
Wide Range
Peak-Level Meters
In
addition to their calibration in dB, these meters offer independent readings of
output power in Watts (for 8 Ω speakers) and of the Rec
Out output
Extremely Stable
Power Supply Section
Two,
22,000 μF electrolytic capacitors and massive mains
transformer give stable power supplies.
A Host of Other
Important Features
These include
relay-operated speaker protection, improved S/N due to four-gang volume
control, a full range of accessory circuits, and the functional beauty of
Yamaha design.
Filters
The filters circuits
of the CA-2010 offer a choice of Subsonic and High filters. Both provide very
steep attenuation curves with a slope of 12 dB/octave. This sharp slope is
achieved with extremely low distortion so that there is minimum degradation of
tonal quality in the important mid-range frequencies.
The Subsonic Filter
operating below 15 Hz prevents the amplification of ultra low frequency
signals, arising from warped or eccentric records, from giving rise to
cross-modulation distortion (general lack of clarity), and protects the
speakers from overloads. Since the filter has virtually, no effect on audible
frequencies above 25 Hz, it can be left ON permanently with no effect on normal
audition.
The High Filter
operates at frequencies above 10 kHz, and is used to cut out unwanted tape hiss
and record scratch. It should not be used unnecessarily.
Specifications
Minimum Power
Output. Continuous RMS Power (both channels driven at rated 0,03% THD)
20 to
20,000 Hz : 120 W per channel into 8 Ω (Class B); 30 W per
channel into 8Ω (Class A)
At 1
kHz : 125 W per channel into 8 Ω (Class B)
Signal-to-noise
Ratio (IHF A network)
Phono 1 (MM), Phono
2 : 96 dB (for 10 mV, shorted)
Phono
1 (MC) : 85 dB (for 50 Ω, shorted)
Tuner, Aux : 100 dB
Main : 118 dB
Residual
Noise : Less than 70 μV
Total Harmonic
Distortion (20 Hz to 20 kHz)
Phono 1 (MM), 2 to
Rec Out : Less than 0,003% , 5 V output
Phono 1 (MC) to Rec
Out : Less than 0,03% , 3 V output
Tunerm Aux to Pre
Out : Less than 0,005% , 3 V output
Main in to Sp Out
Class
A : Less than 0,005% into 8Ω , 15 W
Class
B : Less than 0,01% into 8Ω , 60 W
Tuner
to Sp Out (Class B) : Less than 0,01% into 8 Ω , 60 W
Input
Sensitivity/Impedance
Phono
1 (MM): 2mV/47, 68 ,100 kΩ
Phono
1 (MC) : 50 μV/47 kΩ
Phono
2 : 2 mV/47 kΩ
Tuner,
Aux : 120 mV/50 kΩ
Main
in Terminals : 1 V/50 kΩ
Output
Level/Impedance
Rec
Out terminals : 120 mV/600 Ω (rated); 18,6 V (max. at 1
kHz, 0,2% distortion)
Pre
Out terminals : 1 V/500 Ω (rated); 7 V (max. at 1 kHz,
0,02% distortion)
Frequency Response
Phono 1, 2 RIAA
deviation : ± 0,2 dB (MM/MC)
Tuner to Pre Out
terminals : 5 Hz to 100 kHz, +0, -1 dB
Tuner
to SP Out terminals : 5 Hz to 50 kHz, +0, -1 dB (8 Ω load)
IM Distortion :
0,03%, 250 mW to 120 W (Aux to Sp Out )
Noise-Distortion
Clearance Range (0,1% THD)
Phono to Sp Out :
0,1W to 120 W (Vol at -20); 4 mW to 120 W (Vol at -40)
Damping
factor at 1 kHz : Better than 45 into 8 Ω
Max Input Levels
Phono 1 (MM) , 2 :
310 mV (at 1 kHz, 0,02% distortion)
Phono 1 (MC) : 7,5
mV (at 1 kHz, 0,02% distortion)
Tuner, Aux : 20 V
(at 1 kHz, 0,02% distortion)
Power
Bandwidth into 8 Ω, 0,03% distortion
Class A operation :
10 Hz to 70 kHz (15 W output)
Class B operation :
10 Hz to 50 kHz (60 W output)
Filters
Subsonic : fc = 15
Hz, -12 dB/octave
High : fc =10 kHz,
-12 dB/octave
Tone control
characteristics
Bass Turnover
frequencies : 125 Hz and 500 Hz
Bass Boost/Cut : ±10
dB at 20 Hz (for 500 Hz)
Treble Turnover
frequencies : 2,5 kHz and 8 kHz
Treble Boost/Cut :
±10 dB at 20 kHz (for 2,5 kHz)
Meters
Rise
Time : 100 μsec
Decay Time : 0,95
sec
Meter
Range : -50 dB to +5 dB (1 mW to 316 W into 8 Ω)
Power Supplies: AC
120 V, 50 Hz (USA); AC 110 -130, 220 - 240 V 50/60 Hz (other)
Power Consumption
(nominal): 450 W 550 VA (USA); 900 W (other)
Dimensions (W x H x
D): 461 x 170 x 360 mm (18-1/8” x 6-11/16” x 14-2/5”)
Weight: 20 kg (44
lbs)
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