Cary Audio Design CAD 808 Owner'S Manual Download Page 8

Specifications: Rocket 88 R Stereo Power Amplifier 

 

DIMENSIONS:   

10”W x 18”D x 6”H (25.4 cm x 45.7 cm x 15.2 cm) 

 

WEIGHT: 

 

45 Lb.. (20.4 kg) 

 
CIRCUIT TYPE: 

Push-Pull Triode Class A, Ultra-linear Class A/B 

 
POWER OUTPUT:  

30 Watts Triode, 60 Watts Ultra-linear 

 
INPUT SENSITIVITY:    1.2 volt for full output 
 

INPUT IMPEDANCE:   150,000 ohms 
 

NOISE AND HUM:  

-87 dB below rated output 

 
FREQUENCY RESPONSE: 10 Hz to 82,000 Hz + 0, -3.0 dB @ 1 watt 

 
TUBES: 

  2-12BZ7 

Dual 

Triode, 

Phase inverter, gain stage (12AX7, 12AY7) 

 

 

 

2-EL-84 Current source (or 6BQ5)  

 

 

 

4-KT-88 Output tubes (or EL-34, 6550, KT-66, KT-77, KT-90) 

 

 

 

2-1629 Green ‘Cat Eye’ indicator tubes 

 

 

TRANSFORMERS:  

1-EI laminated core power transformer 

   2-Special 

interleaved 

output 

transformer 

   3-Filter 

Chokes 

 

 

 

200% duty cycle on all transformers 

 
RESISTORS: 

 

1.0 % metal film 

 

CAPACITORS: Polystyrene and polypropylene (oil filled optional) 
 

POWER SUPPLY  
CAPACITORS:   

2-560 

μ

FD @ 450 VDC 

   3-10 

μ

FD Film and foil @ 600 VDC 

   1-47 

μ

FD @ 450 VDC 

 

AC CORD:  

 

Detachable 3 conductor 14 gauge 

 
AC POWER  

REQUIREMENTS:  

117 volts or 240 volts AC 50/60 Hz 

   300 

watts 

operate 

WARM-UP TIME: 

3 minutes 

BREAK-IN PERIOD:    100 hours of music playing time 
FINISH:  

 

Black Epoxy powder coat, Anodized Aluminum face plate 

 

 

 

 

Specifications are subject to change or improvement without notice or obligation. 

Summary of Contents for CAD 808

Page 1: ...will inform you of the specifications proper installation procedures and operation procedures Also included in this manual are guidelines on how to properly service and care for your new Rocket 88 R 1...

Page 2: ...ended by the manufacturer 9 VENTILATION Slots and openings in the cabinet are provided for ventilation to ensure reliable operation of the unit and to protect it from overheating These openings must n...

Page 3: ...eat 23 IMPORTANT SAFETY NOTE Before connecting a new component such as the DVD 7 to your audio or home theater system it is always good practice to make certain that all components are turned off and...

Page 4: ...uipment and receiver Connect the equipment into an outlet on a circuit different from where the receiver is connected 27 OUTDOOR ANTENNA INSTALLATION SAFE ANTENNA AND CABLE CONNECTION If an outside an...

Page 5: ...g more sensitive In the design the front end stage EL 84 tubes are used as current sources for the high gain 12BZ7 driver stage and phase inverter tubes with one used for each channel 12AX7 or 12AY7 t...

Page 6: ...nner The first section of the dual triode 12BZ7 tube is direct coupled to the input RCA or XLR jack on the rear apron of the amplifier The drive signal is amplified through this first section in a cla...

Page 7: ...ormer design and careful shaping of the overall frequency response curve all play a very important part in the ability of the Rocket 88 R to recover quickly when overloaded If one were to monitor the...

Page 8: ...ubes or EL 34 6550 KT 66 KT 77 KT 90 2 1629 Green Cat Eye indicator tubes TRANSFORMERS 1 EI laminated core power transformer 2 Special interleaved output transformer 3 Filter Chokes 200 duty cycle on...

Page 9: ...final output tubes If these LED s fail to light discontinue use and place a call to the Cary Audio service advisor TRIODE UL SWITCH These switches change the operation of the Rocket 88 R between triod...

Page 10: ...g containers have been specifically designed to protect their contents and special care has been taken to prevent damage under normal shipping conditions Mishandling should be evident upon inspection...

Page 11: ...means use separate cables or bi wire speaker cables Your Authorized Cary Audio Design Dealer will have proper speaker cable in stock for this purpose Signal input connection is made via the input jac...

Page 12: ...R is a black and orange patch cord with a male plug and two clips This is the bias adjustment cable To check and or set the bias simply place the red clip lead on the positive meter lead The black cl...

Page 13: ...ailable from your Cary Audio dealer You should get 2 5 year s from the output tubes and even more years of use from the 12BZ7 and EL 84 tubes with everyday usage Factory Service Careful consideration...

Page 14: ...E HIGH VOLTAGE CAPACITORS TO DISCHARGE THROUGH THE BLEEDER RESISTORS BEFORE YOU ATTEMPT TO CHANGE THE TUBES OR TO CLEAN THE INSIDE OF THE AMPLIFIER CAUTIONS NEVER REMOVE or INSERT AC PLUG WHEN THE UNI...

Page 15: ...of the problem 4 Deliver the product to Cary Audio Design or the nearest authorized service facility or ship with all freight and insurance charges prepaid in its original packing container or equival...

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