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Harman Kardon HK6850 User Manual

Harman Kardon HK6850
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harman/kardon
HK6950R
:ntegrateaamptities
HK6850
HIK6950R
Integrated
Amplifier
Instruction
Manual
harman/kardon
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Harman Kardon HK6850 Specifications

General IconGeneral
Total Harmonic Distortion0.08%
TypeIntegrated Amplifier
Damping Factor100
Channel Separation60dB (line)
Input Impedance47kΩ
Input Sensitivity150mV (line)

Summary

HK6850 and HK6950R Features

Discrete circuitry

Uses separate electronic components for improved linearity and reduced distortion.

HCC (High-instantaneous Current Capability)

Provides high instantaneous current for dynamic music signals and demanding speaker loads.

Ultrawide bandwidth

Reproduces frequencies from <10Hz to >100kHz for accurate transient response and phase linearity.

Low negative feedback

Employs low negative feedback for stable amplification, unmeasurable TIM distortion, and outstanding imaging.

Main direct

Bypasses tone controls and preamplifier circuitry for purer sound quality via volume control.

Tone defeat

Bypasses tone control circuitry for unaltered, accurate musical reproduction.

Electronic function switching

Utilizes high-fidelity electronic analog switches for quiet, reliable input/output connection switching.

High voltage/high current design

Handles low impedances and unstable speaker loads, adjustable for higher voltage into higher impedances.

Phase correct loudness contour

Special equalization compensates for ear's decreased sensitivity at low volumes, correcting midrange phase errors.

Active/passive phono section with MM and MC inputs

Matches gain/impedance to turntable cartridge type (MM or MC) for optimal phono playback.

HK6850 and HK6950R Basics

General Safety Warnings

Crucial warnings regarding electric shock, fire risk, and proper plug insertion.

Placement

Guidelines for positioning the amplifier for proper ventilation and away from heat/sunlight.

Power source

Specifies connection to a 120 volt, 60 cycle power supply only.

Power cord protection

Advice on routing the power cord to prevent damage and stress points.

Cleaning

Instructions to use a clean dry cloth, avoiding solvents and dust accumulation.

Water and moisture

Warning against operating the amplifier near water or in wet environments.

Abnormal smells

Procedure for immediate action if an abnormal smell or smoke is detected.

Service

Conditions requiring authorized service personnel and advice against user servicing.

Packing material

Recommendation to save original box and packing material for future transport or shipping.

Warranty card

Importance of filling out the warranty card and saving the sales receipt for proof of purchase.

HK6850 and HK6950R Front Panel Controls

Power Switch

Button to turn the unit on/off; remote control function when "On".

Power Indicator

LED indicator showing power status (green) and standby mode (amber for HK6950R).

PROTECT light

Indicates protection circuitry is engaged due to overheating or short circuits.

HEADPHONE jack

Standard 1/4" jack for connecting stereo headphones, allowing listening without speakers.

PHASE CORRECT LOUDNESS

Boosts low frequencies at low volumes to compensate for reduced ear sensitivity.

SUBSONIC filter

Filters out sub-audible frequencies from warped records or resonance to protect speakers and improve sound.

TONE DEFEAT switch

Bypasses bass and treble controls for unaltered frequency response.

BASS control

Adjusts low frequencies (below 300Hz) up to ±10dB to shape system sound.

TREBLE control

Adjusts high frequencies (above 3000Hz) up to ±10dB to shape system sound.

BALANCE CONTROL

Distributes sound between left and right speakers for equal balance.

PREAMPLIFIER BYPASS

Bypasses tone controls and preamplifier circuitry for direct signal to volume control.

CARTRIDGE selector

Sets gain/impedance for MM or MC phono cartridges to match turntable type.

VOLUME control

Adjusts the overall sound level; recommended to turn down before powering on/changing source.

SOURCE selector

Selects the input program source (PHONO, TUNER, CD, VIDEO, AUX).

RECORD OUT selector

Selects program source to record on tape decks (TUNER, SOURCE, COPY 1-2, COPY 2-1).

TAPE MONITOR selector

Selects tape deck for listening (TAPE 1, SOURCE, TAPE 2), used for monitoring during recording.

SPEAKER selector

Controls which speaker set(s) (OFF, 1, 2, 1+2) are active for listening.

HK6850 and HK6950R Connections

Connecting Components

General advice on connecting components, including cable management and polarity.

Power outlets

Details on switched and unswitched AC outlets and their power ratings.

Connecting speakers

Guidance on speaker wire gauge, connection polarity, and setting speaker operating modes.

Speaker Operating Mode Switches

Instructions on setting switches for speaker impedance (4 or 8 ohm) for optimal amplifier operation.

Connecting a turntable

Guidance on connecting MM and MC cartridges, ground wire, and using shorting pins.

Connecting a CD player

Instructions for connecting a CD player to the CD input jacks.

Connecting a tuner

Instructions for connecting a tuner and ensuring proper antenna connection.

Connecting a tape deck

Guidance on connecting tape decks to TAPE 1/2 jacks or AUX connectors.

Connecting a video product

Instructions for connecting audio out from video products to the amplifier.

Connecting an external power amplifier

Using PRE-OUT connectors to connect the HK6850/HK6950R to an external power amplifier.

Connecting an external preamplifier

Using Main-in jacks to connect an external preamplifier to the HK6850/HK6950R.

Wired Remote Control

Connecting an external remote sensor or compatible components for remote operation.

Operation

Listening to a record

Steps for playing a record, including source selection and subsonic filter use.

Listening to a CD, tuner, AUX or Video component

Steps for selecting and listening to CD, tuner, AUX, or video sources.

Playing a tape

Instructions for playing tapes from connected tape decks using the TAPE MONITOR selector.

Recording on a tape deck

Guidance on recording from various sources, including monitoring and using multiple decks.

Copying (dubbing) from one tape deck to another

Steps for copying tapes between decks, including direction, monitoring, and source selection.

Remote Control System (HK6950R only)

Information on using the system remote control for amplifier functions and compatible components.

Operating Conditions

Details on remote control range, angle, environmental factors, and battery usage.

Troubleshooting

No lights on the front panel

Checks for power cord, outlet, or breaker issues preventing front panel illumination.

The PROTECT light goes on and stays on

Troubleshooting steps for overheating, short circuits, or internal protection issues.

No sound

Checks for incorrect speaker connections, selector settings, short circuits, or source selection.

No sound from tape deck

Troubleshooting steps for tape deck sound issues, including selector and connection checks.

Turntable sound is extremely faint

Checks for incorrect turntable input jacks (MM/MC) and cartridge type.

Low-pitched hum or buzz from turntable

Troubleshooting steps for turntable hum, focusing on ground wire connection and cable placement.

Low frequency oscillation or "howling" when playing turntable

Steps to resolve turntable howling, including bass boost, loudness, and placement checks.

Speakers lack bass

Diagnosis for lack of bass, primarily checking speaker wire polarity.

Sound quality of tuner is poor

Checks for tuner antenna connection and proper positioning for signal quality.

Tone control is not functioning

Checks if TONE DEFEAT or PREAMPLIFIER BYPASS switches are engaged.

Specifications

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