The 5000 series
WORK OF ART, FREE FROM ALL RESTRAINTS TO ACHIEVE FINEST AND MOST TRANSPARENT SOUND DEFINITION. PURE ELEGANCE.
The RB-5000 is a powerful amplifier. It can put out a rather incredible big power, which is a definite advantage in realizing very accurate sound reproduction at all listening levels. But the power is only a small indication of the RB-5000's marvelous characteristics.
The RB-5000 is a state-of-the-art product resulted from Rotel's untiring engineering research to create the best. In a true sense, it can be looked upon as a highly sophisticated and complex machine.
The RB-5000 is a pure elegance. No other words may describe it better. The clean, undistorted sound it can reproduce is overwhelmingly impressive. The well-thought electronic circuitry clearly shows a very high-level technology. The formidable-looking front facia is a shear joy to watch and touch, also being functionally laid out.
Yet, fundamentally, the RB-5000 is a simple tool for ultimate listening pleasure.. Something to treasure, the RB-5000 power amplifier.
the power amp RB-5000
MUSIC CONTROL CENTER IN HIGHEST FORM, STATE-OF-THE-ART IN HIGH FIDELITY PERFORMANCE. PURE PERFECTION.
The RC-5000 is a control amplifier. It is an extraordinary piece of equipment, considering its very comprehensive features, highly versatile facilities, professional quality performance and extremely polished appearance.
The RC-5000 is also a state-of-the-art product, like the RB-5000 power amplifier its matching partner. The quality of the controls and switches in handling and durability alone will indicate the astounding sophistication of the RC-5000.
The RC-5000 is a dream-comes-true. The most advanced electronic circuits systematically laid out inside its chassis are made up of top-quality long-life materials and components to give consistency in optimum performance. The transparent, faithful musical reproduction it creates is simply fantastic. Especially, a very special attention has been paid to achieve highest possible order of performance in phono playback and tape recording/playback.
To any seasoned audio enthusiast, the RC-5000 will definitely represent a great asset as the workhorse around which a best possible music system can be readily built. The RC-5000 control amplifier.
the control amp RC-5000
amp.
POWER
The
RB-5000
The Power
The RB-5000 delivers a continuous power output of 500 watts per channel, minimum RMS, both channels driven into 8 ohms or 4 ohms from 20 to 20,000Hz with no more than 0.009% total harmonic distortion.
he DC Configuration
Rotel's advanced amplifier configuration assures constantly stable levels of clean-cut, high-fidelity sound from very small to very large outputs. With the DC configuration, capacitors which tend to affect sound quality adversely are removed from the input signal path and the NF loop, and low frequencies are extended down to the DC range leading to a highly responsive bass. In other words, the DC circuitry gives greatly improved damping factor and phase shift at low frequencies resulting in superior rendering of undistorted bass. To develop the effective and reliable DC circuitry, a problem of DC drifts caused by variations in input signals and supply voltage is completely eliminated by advanced electronic design. The high stabilization of differential amplifiers and the linear balance are also achieved.
The Perfect Symmetry Design
Essentially, the total circuit configuration of the RB-5000 can be considered as having two identical monorual power amplifiers in one chassis. This is the ultimate design in top class stereo amplifier by
ninating any static and dynamic interferences between the left and right channels. For a further perfection, a completely separate power supply is provided for the relay switching, the peak indicators and the speaker indicators (using a separate—and third—power transformer).
The Class AB Operation
The Class A operation eliminates switching distortion and crosstalk, resulting in more linear and cleaner performance. However, the Class A is highly inefficient considering the fact that very large electrical current must be always fed and much larger heat sinks required for high heat dissipation. In order to effectively utilize the excellent sound quality of the Class A amplification at low power levels and the efficient low-distortion design of the Class B amplification at high power levels, Rotel have combined both operations and developed the Class AB amplification. Hence, at normal listening levels, usually 1 to 3 watts, you can enjoy the superb sound of the Class A amplification, while at any peak and power levels over 3 watts you are assured of same clean passage of music by the Class B amplification. The transition from the Class A to the B is automatic, so you just sit back and listen to a very faithful sound reproduction at incredibly low distortion.
The Amplifier Stages
First Stage (Pre-Driver)—The cascode pure complementary push-pull differential amplifier is used. The dual-transistors installed are especially selected for low noise and excellent electrical and thermal characteristics, providing a proper operation of the DC amplification. By this circuitry, the distortion caused by the variation of input signal impedance is substantially reduced, and the very high S/N of over 110dB is readily achieved.
Second Stage (Pre-Driver ) — The cascode symmetrical push-pull differential amplifier is also used in this stage. The complete stability is easily obtained as the result, reducing the thermal variation of the center-point voltage and the DC drifts. In addition, a negligible overall distortion is realized by a strict selection of special low-noise type transistors and other semiconductors.
Output Stage — The Darlington direct-coupled 4-stage linear complete-mirrored parallel push-pull circuitry is used to maintain stable high power level at very low distortion. 4 huge power transistors, each having a perfect matching characteristics and a capability to handle 150 watts, are provided for each channel. This configuration assures the highlinearity operation and eliminates non-linear distortions, as well as warrants ample margin for thermal effect. Since the circuit configuration is completely symmetrical (mirrored), top and bottom and left and right, a very high order of balance is achieved. In effect, this makes the abundant use of NF to obtain low distortion obsolete, as much lower distortion can be achieved—so low, it approaches the measurable limit of instrument—due to extremely outstanding circuit design and well-selected highquality electrical parts.
ROTEL
Dual-transistors
Linear complete-mirrored parallel push-pull circuitry
BLOCK DIAGRAM
The Protection
The RB-5000 is installed with the various protection circuits to completely protect itself from all possible electrical and thermal damages. To protect the abnormally large surge of current. The output circuit incorporates a overload limiter, which prevents any abnormal overloading. For the speaker protection, a DC detector circuit is used. In order to keep the guadrant heat sink block from overheating (in case the fan system fails), a detector circuit is connected to the thermostat. The latter two detector circuits will activate the protection relay system which shuts overload or the protection indicator on the front loud pop-noise and abnormal in-rush current when an in-rush current absorber circuit are equipped. Combined with the high quality materials and parts above protection system offers an incomparable
The Power Supply
Toroidal power transformers not only eliminate such problems as magnetic leakage flux and overheating, but also greatly improve power regulation and transient response. The RB-5000 uses two enormous and high-efficient toroidal power transformers, one for each channel to maintain big power outputs with constant ease. Coupled to each of this transformer are two large cylindrical 22,000 µF electrolytic capacitors, (exclusively designed for
the RB-5000 in order to assure a high standard of operation). The third and conventional yet wellconstructed power transformer is used to run the relay switchings (protection relays and speaker relays) and LED's (peak indicators and speaker indicators).
The Cooling System
In order to eliminate the problem of overheating by high power output, the RB-5000 incorporates a quadrant-structured heat sink block and an automatically forced air cooling system. The cooling fan module is entirely made of moulded plastic, except for the specially-designed ball-bearing system. This allows the quietest running operation possible, so you will not be annoyed by a fan noise. The fan system is always activated and its rotational speed is controlled by the thermostat attached to the quadrant heat sink block, which houses the power transistors and is constructed to give efficient heat dissipation.
The Front Panel Controls
There are three pushbutton switches for three pairs of speaker systems with individual LED indicator. The input ON/OFF switch on the center to cut off input instantaneously. The 22-stepped attenuatortype level controls (from -21dB to 0dB calibrated). The 3-position low frequency filter selector. The 3position meter sensitivity selector and the 3-position power limiter selector. In other words, all conceivable controls needed to run the RB-5000 effectively and smoothly.
Cooling unit
Cannon sockets and gold-plated RCA jacks
The Rear Panel Connections
There is the facility for hooking up three pairs of speaker systems. The heavy duty speaker terminals are used for safety sake and to take big-diameter shielded speaker wires. Beside the pair of normal RCA-type input jacks (gold-plated for prevention against corrosion to maintain sound quality), there is also a pair of Cannon sockets for professional studio use. For a convenience, four large plastic legs are installed for servicing.
The Cosmetic Appearance
The magnificent appearance of the RB-5000 matches the electronic quality it houses. The extruded aluminum front panel is 5mm thick with another layer of aluminum subpanel surrounding the power meters and peak indicators. The knobs used are all solid extruded aluminum for heavy duty use. The RB-5000 is EIA 19-inch rack mountable, and comes with two big aluminum grab handles. For added convenience, two durable casters are installed on rear of the bottom plate so that the unit can be moved readily by rolling on the surface.
IC DISTORTION vs
POWER BAND WIDTH
| (M |
LOAD: 8ohms
THD: 0.01% |
|||
|---|---|---|---|---|
| 500 | - | |||
| 250 | ||||
| 2 100 | ||||
| 50 | ||||
| 30 | ||||
| - | ||||
| 100 | 200 | 1k | 15 | 304 504 |
The Indicators
Power Meters – Two big, precision meters give clear visual indication of average power levels in watts and decibels (calibration based on 8-ohm load). The meter sensitivity can be varied by using the 3-position sensitivity selector switch, allowing a very wide visual coverage from 5 mW to 1,000W (-50 dB to +3 dB).
Peak Indicators (LED) – 8 LED's per channel will visually indicate the instantaneous peak levels of power output. When used in conjunction with the power meters, they act as a superb tool for checking setting of level controls.
Standby Indicator — This LED lights up when the power switch is turned on, showing that the RB-5000 is on the warm-up stage. It automatically distinguishes when the warm-up time is over. The Overload and Protection Indicators — These LED's light up when the protection system is activated to warn that malfunction has occured. The overload indicator shows malfunction by overheating in the heat sink block, and the protection indicator implies malfunction by speaker wire shorting or abnormal DC flow.
SPECIFICATIONS
Continuous Power Output:
500 watts* per channel min. RMS both channels driven at 8 ohms or 4 ohms from 20 to 20,000 Hz with no more than 0.009% total harmonic distortion.
|
Total Harmonic Distortion
(20 to 20.000Hz) |
No more than 0.009%
(continuous rated power output) No more than 0.004% (250 watts per channel power output, 8 ohms) No more than 0.006% (1 watt per channel power output, 8 ohms) |
|---|---|
|
Intermodulation Distortion ±1dB
(70 Hz, 7,000 Hz = 4 : 1) |
No more than 0.009%
(continuous rated power output) No more than 0.004% (250 watts per channel power output, 8 ohms No more than 0.006% (1 watt per channel power output, 8 ohms) |
| Frequency Response |
LAB. DC to 110,000 Hz + 0 dB, -1 dB
NOR. 15 to 110,000 Hz + 0 dB, -1 dB LOW FIL. 20 to 110,000 Hz + 0 dB, -1 dB (1 watt per channel power output, 8 ohms) |
| 1 SODW | ||||
|---|---|---|---|---|
| LOAD Bohms | ||||
| TOTAL HAHM | - | Sow Sow | ||
| 0.001 | 100 | B | 10k | 50k |
| nput Sensitivity/Impedance | RCA jack IN 1V/50 kohms |
|---|---|
| Dutput: Speaker | A, B, C (4~16 ohms); |
| Damping Factor |
A+B, B+C, A+C (8~16 onms)
180 (20 to 20,000 Hz, 8 ohms) 250 (1kHz 8 ohms) |
|
Hum & Noise
Crosstalk |
120 dB (IHF, short-circuited A network)
70 dB/10kHz (reverse channel short) |
| Slew Rate |
1/4 8 ohm 150W, 4 ohm 100W
40V/ µs |
| Power Requirements |
120V/60Hz or 220V/50Hz or 240V/50Hz or
100, 120, 220, 240V/50–60Hz (switchable) |
|
Power Consumption
Dimensions (Overall) Weight (Net) |
1.600 watts (8 ohms), 3,200 watts (4 ohms)
482(W)×240(H)×430(D)mm 53kg |
NOTE: Specifications and design subject to possible modification without notice. * Measured pursuant to the Federal Trade Commission's Trade Regulation Rule on Power Claims for Amplifiers. (Applicable to the U.S.A. only)
| PHASE | s FREQUE | NCY | ||
|---|---|---|---|---|
|
PHASE IDEGREE)
0 |
LOAD Bohms
OUTPUT W |
|||
| 10 | 100 | R | 10k | 1004 |
| FREQUENCY (Hz) |
PING FACTOR vs FREQUENCY
| OUTPUT: 500 W | OUTPUT: 500 | w |
|---|
The Perfect Symmetry Configuration-The Twin-Mono Amplifiers
The RC-5000 in fact is consisted of two identical the components of each amplifier are completely mis is the simple yet ultimate design in professional quality product by eliminating total
The DC Configuration
circuit of the RC-5000 to provide the flattest user to freely select the shaping and equalization
The Phono Equalizer
connected differential input circuit and a Class A operational output circuit. The first stage of the input circuit incorporates a super-low-noise FET Ctive in maintaining high frequency loading limiter and constantly suppresses excessive loading to the first stage. The output circuit utilizes the Class A single-end push-pull configuration in order to achieve rock-stable
As the result, the clean wide-range phono
Equalizer amp. circuit diagram
The MC (moving coil) head amplifier built into the in perfect-symmetry configuration. The output stage uses a Class A symmetrical push-pull
With the built-in MC head amplifier, it becomes external head amplifier or step-up transformer,
MC HEAD AMP
The Volume Control and The Flat Amplifier
BLOCK DIAGRAM
This flat amplifier (tone pre-stage flat amplifier in
MC head amp circuit diagram
The RC-5000 purposely uses the continuous variable type volume control instead of a usual stepped type to achieve more linearity and higher S/N ratio. The input side of the flat amplifier is affected by the volume level of zero to - 40 dB and the output side by the level of - 40 dB to infinity. This unique volume control configuration results in superior characteristic and reduced noise (at the infinity position-minimum level-the residual noise is only 5.6 (v)
the CONTROL
The Switchable Phono Characteristic Switches
Failure to give correct load capacitance, resistance and sensitivity to a magnetic cartridge results in poor high frequency response. Three switches are incorporated on the front panel of the RC-5000 for obtain the optimum matching to any particular MM (moving magnet) type cartridge chosen. These permit choice of 6 additional capacitance settings (0, 50, 100, 200, 300, 400 pF), 6 load impedances (15k, 25k, 35k, 50k, 70k, 100k), and continuously variable sensitivity level (from 8 to 2 mV). Note the switches are effective for a turntable connected to the PHONO 1 position.
The Octave Equalizer
The Low and High Filters
These are -12dB/octave active filters of a 2-stage Damington uncor-occupied
The Separate Recording Selector Control
The REC OUT control located on the front panel broadcast. The full tape dubbing between two
he Microphone Amplifier
2 high quality IC's and super-low-noise FET are ratio. The high quality concentric level controls
Microphone amp circuit diagram
The Power Supply
The Cannon Type Input/Output Terminals
On the rear panel of the RC-5000, one pair each one-stage differential amplifier/3-stage direct-
The Facilities
The RC-5000 is endowed with the complete
The Cosmetic Appearance
SPECIFICATIONS
| EQUALIZER AMPLIFIER SECTION | Crosstalk (at 1kHz) | 80 dB AVE | |
|---|---|---|---|
| Output Voltage/Impedance (at 1kHz) | OSUB AVE | ||
| Rated Output DIN output | Intermoduration Distortion | 0.040/ | |
| 50 mV | 150 mV | (70 Hz: 7 kHz = 4 : 1) | 0.04% |
| Max. Output 0.5% T.H.D. | 30V | MIC AMPLIFIER SECTION (REF. PRE AMPLI | FIER RATED OUTPUT) |
| Harmonic Distortion (5V output 20 to 20,000 Hz) | Harmonic Distortion | 0.05% | |
| PHONO 1, 2 (MAG) | 0.003% | Fraguency Response (+0dB - 3dB) | 20~ 25 000 Hz |
| PHONO 3 (MC) | 0.004% | Hum and Naisa (IHE A potwork) | 70 dP |
| Phone Equalization (20 to 20.000 Hz) | Paridual Naise (INF A network) | 20 V 100 dP | |
| PHONO 1 BIAA STD | +0.2dB | Hesidual Noise (IHF A network) | |
| PHONO 2 3 RIAA STD | +0.2dB | Input Sensitivity/Impedance (LOW, HIGH) ±10B | 4 mv/600 onms, 50 konms |
| Hum and Noise (IHE & network 1V output) | T OF OP | Overload (1kHz, 0.5% I.H.D.) | IV |
| PHONO 1.2 (MAG) | 80 dB | Crosstalk (at 10 kHz) | 40dB |
| PHONO 1, 2 (MAG) | 70 dB | (at 20 kHz) | 40dB |
| PHONO 3 (MO) | HEADPHONES AMPLIEIER SECTION (REE | PRE AMPLIFIER BATED INPUT) | |
| input Sensitivity/impedance (ref. rated output) | +1dB 2 8mW/15 25 35 50 70 100 kohme | Harmonic Distortion | 0.05% |
| PHONO I (MAG) | ±10B 2~0110/15, 25, 35, 50, 70, 100 KOUINS | Fragueney Response (LOW/INP) + 0dP 1dP | 50- 50 000 Hz |
| 200000000000000000000000000000000000000 | 0, 50, 100, 200, 300, 400 pr | Hum and Noice (IHE A potwork) | 80dB |
| PHONO 2 (MAG) | ±10B 200 W00 chms | Power Output (MAX 0.5% THD at 1kHz) | |
| PHONO 3 (MC) | ±10B 90 µV/22 onms | Power Oulput (MAX. 0.5% T.H.D. at TKH2) | 0.EW |
| Crosstalk (at 20,000 Hz, reverse channel short) . | 50 dB | both channel driven 600 chmc lood | 0.25W |
| Over Load (1kHz, 0.5% 1.H.D.) | 500 0000 -W | Outout impadence LOW/ULCH | 1 16 ohme/600 ohme |
| PHONO 1 (MAG) | 500~2000mV | Output Impedance LOW/HIGH | |
| PHONO 2 (MAG) | 500 mV | Crosstaik (at 10kHz) | 4008 |
| PHONO 3 (MC) | 20 mV | Rated output (rated input) 1 KHZ | 00.00 |
| Intermodulation Distortion | 8 ohms load | 30mW | |
| (70Hz: 7kHz=4:1) | 0.009% | 600 ohms load | 15mW |
| PRE AMPLIFIER SECTION (AT PRE-OUTPU | Τ) | CONTROL CHARACTERISTICS | |
| Output Voltage/Impedance | Division Frequency | 32, 63, 125, 250, 500, 1000, 2000, 4000, | |
| RCA JACK rated output | 1V/300 ohms | 8000, 16000 Hz/±12 dB | |
| max. output (0.5% T.H.D.) | 7V/300 ohms | Loudness 1 (at 50 Hz/10 kHz) | +13dB/+6dB |
| CANNON JACK rated output | 1V/600 ohms | 2 (at 50 Hz/10 kHz) | +7dB/+3dB |
| max_output (0.5% THD) | High Filter (at 12kHz) | 12 dB/oct. | |
| Harmonic Distortion (rated output 20 to 20 000 H | 7) | (at 24 kHz) | 12 dB/oct. |
| BCA JACK output (at 1kHz 0.003 AVE) | 0.008% | Low Filter (at 16Hz) | 12 dB/oct. |
| CANNON JACK output (at 1kHz 0.005 AV/E) | 0.01% | (at 4 Hz) | 12 dB/oct |
| Engrance Response | 0.0170 | Audio Muting | 20dB +1dB |
| Piequeicy Response | DC - 250,000 Hz | ||
| CANNON LACK (+0dB 1dB) | 10- 250 000 Hz | MISCELLANEOUS | |
| CANNON JACK (+00B, -10B) | 10~230,000112 | Power Requirements | 120V/60Hz or 220V/50Hz or 240V/50H |
| Hum and Noise (IHF, A network) | 05 dB | or 100, 120, 220, 240V/50-60Hz | |
| TUNER, AUX T (HCA JACK), AUX 2 | 9500B | (switchable) | |
| TAPE MUNITUR I, Z | Power Consumption | 60 watts (Max.) | |
| AUX 1 (CANNON JACK) | Dimensions (Overall) | 482(W) × 190(H) × 410(D) mm | |
| HESIDUAL (volume level at min.) | 0 µ v, 100 0B | Weight (Net) | 15 kg |
| mout sensitivity/impedance (ref. rated output) | 150ml/ + 1dB/EQ kohmo | ||
| TUNEH, AUX 1 (HCA JACK), AUX 2 | 150 mV ± 10B/50 kohms | NOTE: Specifications and design subject to poss | ible modification |
| TAPE MONITOR 1, 2 | 150 mV ± 10B/50 konms | without notice. | |
| AUX 1 (CANNON JACK) | 150 mv ± 10B/600 onms | ||
| - | LOWF | ILTER | HIGH | FILTER |
|---|---|---|---|---|
| ESPONSE (dB) | 4Hz/oct | 15Hz/oct | 12kHz/oct | 24kHz/c |
|
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LOUDNESS (1)
LOUDNESS (2)
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