Krell Industries FBI Owner'S Reference Manual Download Page 1

Page: 1 / 30

FBI

Fully Balanced

Integrated Amplifier

Instructions for Use

Owner’s Reference

Summary of Contents for FBI

Page 1: ...FBI Fully Balanced Integrated Amplifier Instructions for Use Owner s Reference ...

Page 2: ...sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 8 Unplug this apparatus during lightning storms or when unused for long periods of time 9 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as a power supply cord or plug is damaged liquid has been spilled or objects ha...

Page 3: ...Installation and Removal Remote Control Only Functions BACK PANEL DESCRIPTION 18 CONNECTING THE FBI TO YOUR SYSTEM 20 Connection Steps OPERATING YOUR FBI 21 Amplifier Operation Tape Input and Output OPTIONAL CONFIGURATIONS 23 Configuring the FBI for Theater Throughput Preamplifier Output HOW TO TROUBLESHOOT SYSTEM NOISE 25 QUESTIONS AND ANSWERS 26 WARRANTY 27 RETURN AUTHORIZATION PROCEDURE 29 SPEC...

Page 4: ...4 Krell FBI Illustrations FIGURE 1 The FBI Front Panel 12 FIGURE 2 The FBI Remote Control 12 FIGURE 3 The FBI Back Panel 17 Page ...

Page 5: ...and control afforded by big Krell amplifiers in a convenient integrated package that is simple to operate The remote control accesses all functions while a 12 V trigger connection allows the Fully Balanced Integrated Amplifier to interface easily with other components The Theater Throughput feature provides easy integration into a home theater system This owner s reference manual contains importan...

Page 6: ...inked whole The original signal remains unaltered from source to speaker CAST Basics Here is how a CAST audio system works Internally each CAST source transfers or amplifies current using Krell Current Mode circuitry This current signal is then output using CAST circuitry When the signal is received by a CAST input Krell Current Mode circuitry again takes over until the signal reaches the loudspea...

Page 7: ...at Krell manufactures An all metal body and locking connectors with gold contacts are part of the standard no compromise specification developed for every CAST cable made Evolution CAST By employing revolutionary current mirror circuitry the Evolution 222 components elevate the CAST technology to another level This advanced use of the technology increases the linearity transient speed and bandwidt...

Page 8: ... use of long interconnect cables Balanced connections are completely immune to induced noise from the system or the environment CAST and Evolution CAST Krell Current Audio Signal Transmission or CAST is a proprietary Krell circuit technology for connecting analog components transmitting the audio waveform between components in the current domain rather than in the voltage domain The speed and band...

Page 9: ...ent in the stand by mode when it is not playing music Operational Mode When the component is in the stand by mode and you press the power button on the front panel or the power key on the remote control the blue power LED illuminates The component is in the operational mode and is ready to play music Krell Current Mode A proprietary Krell circuit topology in which the audio gain stages of a compon...

Page 10: ...on stands at the back of the amplifier Both people need to grab a pair of the cardboard handle cutouts one pair located at the front of the amplifier and one pair located at the back of the amplifier and simulta neously lift the amplifier straight up out of the carton Bend and lift with your knees not your back 3 Place the amplifier in a safe location and remove the protective plastic wrapping If ...

Page 11: ...above and below the component or small fans may be needed to increase ventilation The air space between the chassis and shelf must be unobstructed The Fully Balanced Integrated amplifier drives the lowest imped ances with ease When impedance is added due to long speaker cable lengths amplifier power is wasted in the cable Long speak er cables reduce the maximum power that is delivered in the speak...

Page 12: ...Key and LED 7 S 1 S 2 S 3 and B 1 Buttons Keys and LEDs 8 Tape Button or Key 9 Tape LED Mode Indicators 10 Mute Button or Key 11 Mute LED Volume 12 Level Knob or Keys Display 13 Front Panel Display Volume Adjustment Functions remote only 14 Bal Balance keys Note The numbered remote con trol keys function with the FBI The CD player keys on this remote control activate some Krell source compo nents ...

Page 13: ...ol key is pressed 3 Stand by LED The amplifier is in the stand by mode and ready to be switched to the operational mode when the FBI is plugged into a standard AC wall receptacle the back panel power breaker switch 24 is in the up position and the red stand by LED illuminates 4 Infrared Sensor The infrared sensor receives commands from the FBI remote con trol For proper remote control operation ma...

Page 14: ...on or Key Use this button or key to interrupt the signal of the input you have selected To unmute press the mute button or key again 11 Mute LED The red mute LED illuminates when you press the mute button or key 12 Level Knob Level Keys The level knob on the front panel or the level keys on the remote control adjust the amplifier output level The output level is indi cated numerically on the front...

Page 15: ...backplate using the supplied T 10 Torx wrench 2 Install the batteries following the battery position diagram on the plastic battery receptacle 3 Replace and secure the backplate Replace batteries when remote control function becomes intermittent Remove batteries if the remote control is not used for a long period of time Battery leakage can damage the remote control Notes Battery Installation and ...

Page 16: ...mote The front panel display indicates C when the system is balanced If the system is not balanced the front panel display indicates that the balance is right or left of center and by how much on a scale of 1 least out of balance to 5 most out of balance Example A display of 3 means that the balance is moderately right of center A display of 5 means the balance is severely left of center The numbe...

Page 17: ...and Right Balanced Analog Inputs 18 Left and Right Single ended Analog Inputs 19 Left and Right Tape Inputs Analog Outputs 20 Left and Right Tape Outputs 21 Left and Right Preamplifier Outputs Remote Back Panel Connections 22 RC 5 In 23 12 VDC In Out 12 V Trigger Power 24 Back Panel Power Breaker Switch 25 IEC Connector Convenient Lifting Device 26 Handles ...

Page 18: ...Use the red terminal for the positive connection and the blue terminal for the negative con nection 16 Krell CAST Inputs The FBI is equipped with one pair of Krell CAST inputs via 4 pin bayonet connectors Krell CAST inputs allow the Fully Balanced Integrated amplifier to be connected to any Krell CAST equipped component 17 Left and Right Balanced Analog Inputs The FBI is equipped with one pair of ...

Page 19: ...y coordinated Mono 3 5 mm connectors are used in the following configuration Tip 12 V Sleeve GND When the FBI is in the operational mode the 12 V trigger provides 12 Volts of DC output When the FBI is in the stand by mode or off the DC output is 0 Volts A maximum of 30 mA is available from the 12 V trigger output Consult the owner s reference of the components used in a custom instal lation to tak...

Page 20: ...ight outputs of your source components to the appropriate analog inputs 15 16 17 on the FBI The FBI is equipped with one CAST input C 1 16 one balanced input B 1 17 three single ended inputs S 1 S 2 or S 3 18 and one tape input 19 The C 1 B 1 S 1 S 2 and S 3 inputs can be configured for Theater Throughput See Optional Configurations on page 23 for information on con figuring an input for Theater T...

Page 21: ...arge reserves of clean power and can safely drive loudspeakers to higher sound pressure levels than other amplifiers However use care when setting high playback levels and lower the vol ume level at any sign of loudspeaker distress When powering up any system always turn amplifiers on last When powering down always turn amplifiers off first 1 After the FBI is connected to AC power place the back p...

Page 22: ...this function select an audio source for recording using the C 1 B 1 S 1 S 2 or S 3 analog input buttons or keys 5 Press the tape button on the front panel or tape key on the remote on the to switch between the tape recorder output red tape monitor LED 7 illuminated and the input source red tape monitor LED not illuminated 3 Use the tape output to create a processor loop when the FBI is connected ...

Page 23: ...he button or key again and hold it for 4 seconds The front panel display 13 shows thr Make sure the level on the source component is set to zero when configuring the FBI input set for Theater Throughput Source com ponents without level controls should not be connected to an input configured for Theater Throughput Doing so can result in excessive and possibly damaging volume levels when the source ...

Page 24: ...ut puts 19 These outputs enable the FBI to be used as a preampli fier when it is connected to a separate amplifier The amplifier channel outputs are always active even when the FBI is being used only as a preamplifier Optional Configurations continued Note Preamplifier Outputs ...

Page 25: ...l cable terminations making sure they have solid sol der joints and are of sound construction 2 With the amplifier off remove the interconnect cables then turn the amplifier on If the hum disappears turn the amplifier off and reinsert one of the interconnect cables Turn the amplifier back on If the hum reappears with one or both cables reinserted there may be a defective cable Have the interconnec...

Page 26: ...ction See How to Troubleshoot System Noise on page 25 If the interconnects and cables are sound you may be experiencing a ground loop This can often be easily eliminated Please contact your authorized Krell dealer distributor or Krell for suggestions on how to solve this problem Q When I use the FBI s Theater Throughput capability with my surround sound processor where should I set the volume on t...

Page 27: ...t even if Krell has been advised of the possibility of such damages Proof of purchase in the form of a bill of sale or receipted invoice sub stantiating that the product is within the warranty period must be pre sented to obtain warranty service The warranty begins on the date of the original retail purchase as noted on the bill of sale or receipted invoice from an authorized Krell dealer or distr...

Page 28: ...d to Krell for exchange become the property of Krell No expressed or implied warranty is made for any Krell product dam aged by accident abuse misuse natural or personal disaster or unau thorized modification Any unauthorized voltage conversion disassembly component replacement perforation of chassis updates or modifications per formed to the product will void the warranty The operating voltage of...

Page 29: ...e Service Department have been made in advance Proof of pur chase will be required for warranty validation at the time of hand delivery Use the original packaging to ensure the safe transit of the product to the factory dealer or distributor Krell may at its discretion return a product in new packaging and bill the owner for such pack aging if the product received by Krell was boxed in nonstandard...

Page 30: ...ingle ended via RCA connectors OUTPUT VOLTAGE Peak to peak 138 V OUTPUT POWER 8 Ohms 300 W 4 Ohms 600 W 12 Ohms 1200 W REMOTE CONTROL 1 handheld wireless IR remote 1 12 VDC Out In 12 V trigger 1 remove IR sensor input via 1 8 mini stereo connector 1 RC 5 input via a DC power connector DIMENSIONS 17 3 in W x 10 3 in H x 20 5 in D 483 mm W x 260 mm H x 521 mm D WEIGHT Shipped 124 lb 56 3 kg Unit onl...

Search results

Summary of Contents for FBI

Reviews:

Related manuals for FBI

Brands by name

Popular brands

Krell Industries FBI, Owner'S Reference Manual

Search results

Summary of Contents for FBI

Reviews:

Related manuals for FBI

Brands by name

Popular brands