kenwood a97 manual

The Kenwood A97 is a high-performance stereo amplifier featuring advanced audio technology, multiple input/output options, and sophisticated control systems. This amplifier delivers exceptional sound quality with robust power output, supporting various audio sources including CD players, turntables, and digital media. Below are key sections covering features, installation, operation, specifications, and troubleshooting.

Features at a Glance

Key components: High-power amplifier section, multiple audio inputs, speaker terminals, remote control capability, tone controls, and protection circuits.

Feature	Description
Power Output	100W per channel into 8 ohms
Inputs	Phono, CD, Tuner, Aux, Tape
Speaker Terminals	Gold-plated binding posts
Tone Controls	Bass, Treble, Balance
Remote Control	Infrared remote included
Protection Circuit	Overload and thermal protection
Headphone Jack	6.3mm stereo jack
Power Consumption	280W maximum
Dimensions	430mm x 150mm x 380mm (WxHxD)
Weight	12.5 kg

Installation

Unpack and inspect contents. Place on stable, well-ventilated surface.

1. Connect speakers: Use speaker cables to appropriate terminals (A or B speaker outputs).
2. Connect audio sources: Use RCA cables for CD player, turntable, tuner, etc.
3. Connect power: Plug into AC power outlet (220-240V, 50/60Hz).
4. Antenna connection: Connect FM/AM antenna for tuner operation.

WARNING! Ensure proper ventilation; do not block ventilation openings. Use correct speaker impedance.

First-Time Setup

Power on amplifier; check all connections before operation.

1. Source selection: Rotate INPUT SELECTOR to desired source (PHONO, CD, TUNER, etc.).
2. Volume control: Start with volume at minimum, gradually increase to desired level.
3. Tone adjustment: Set BASS and TREBLE controls to neutral position initially.
4. Speaker selection: Choose A, B, or A+B speakers using front panel switch.

CAUTION! Avoid turning volume to maximum immediately. Check polarity of speaker connections.

Specifications

• Power Output: 100W + 100W (8 ohms, 20Hz-20kHz)
• Total Harmonic Distortion: 0.08% (1kHz at rated output)
• Frequency Response: 10Hz - 100kHz (+0/-3dB)
• Input Sensitivity: PHONO: 2.5mV, CD: 150mV
• Signal-to-Noise Ratio: PHONO: 76dB, CD: 100dB
• Tone Control Range: Bass: ±10dB at 100Hz, Treble: ±10dB at 10kHz
• Power Requirements: AC 220-240V, 50/60Hz
• Operating Temperature: 5°C to 35°C

Controls and Settings

Front Panel: POWER switch, INPUT SELECTOR, VOLUME control, BASS control, TREBLE control, BALANCE control, SPEAKER selector, HEADPHONE jack.

Remote Control: POWER, VOLUME UP/DOWN, MUTE, INPUT SELECTION, TONE controls.

Input Selection: PHONO, CD, TUNER, AUX, TAPE. Tone Controls: Independent bass and treble adjustment ±10dB. Balance Control: Adjusts left/right channel balance. Speaker Selection: A, B, or A+B speakers.

Connecting Devices

Audio Sources: Use appropriate RCA cables for each input. Speakers: Connect to A or B speaker terminals.

1. Turn off amplifier before making connections.
2. Match input labels (PHONO for turntable, CD for CD player, etc.).
3. Ensure secure connections; tighten binding posts properly.
4. For phono input: Connect turntable ground wire to ground terminal.

Tip: Use high-quality cables for best audio performance. Keep signal cables away from power cords.

Operation Guide

Basic operation procedures for optimal performance.

1. Power on: Switch POWER button to ON position.
2. Select source: Rotate INPUT SELECTOR to desired input.
3. Adjust volume: Start low, increase gradually to desired level.
4. Tone adjustment: Use BASS and TREBLE controls to suit listening preference.
5. Balance control: Adjust if sound appears stronger in one channel.
6. Speaker selection: Choose appropriate speaker set (A, B, or both).
7. Headphone use: Plug headphones into front panel jack; speakers mute automatically.

WARNING! Do not operate with covers removed. Avoid exposure to moisture.

Advanced Features

Direct Input Mode: Bypasses tone controls for pure signal path. Tape Monitoring: Allows recording and playback monitoring. Preamp Output: Fixed-level outputs for connection to external amplifiers or recording devices.

Care & Maintenance

Unplug from power before cleaning. Use soft, dry cloth for exterior cleaning. Avoid chemical cleaners.

CAUTION! Do not use liquids or sprays. Keep ventilation openings clear of dust accumulation.

Regulatory Information

CE compliant: Meets European safety and EMC standards. RoHS compliant: Free of hazardous substances. Manufactured under ISO 9001 quality standards. Copyright © Kenwood Corporation. For technical support, visit www.kenwood.com or contact authorized service centers.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Volume control/Speaker selection	Check volume level; verify speaker selection; ensure input source is active.
Distorted sound	Overload/Impedance mismatch	Reduce volume; check speaker impedance (minimum 4 ohms).
One channel not working	Balance control/Cable connection	Adjust balance control; check audio cables and connections.
Hum or noise	Grounding/Cable issues	Check ground connections; ensure cables are properly shielded.
Protection circuit activated	Overload/Short circuit	Turn off amplifier; check for speaker cable shorts; allow to cool.

Reset: Turn off power for 30 seconds, then restart.

Service: Contact authorized Kenwood service center for repairs.