1. はじめに
This manual provides comprehensive instructions for the safe and efficient use of your ONKYO K-185II-S Auto-Reverse Cassette Deck. Please read this manual thoroughly before operating the unit and retain it for future reference. The K-185II-S is a high-quality stereo cassette deck designed for both playback and recording, featuring auto-reverse capability and advanced noise reduction technologies.
図1.1: フロント view of the ONKYO K-185II-S Auto-Reverse Cassette Deck. This image displays the main controls and cassette compartment on the front panel of the unit.
2. 主な特徴
- Dolby B/C NR: Integrated Dolby B and C Noise Reduction systems to minimize tape hiss during playback and recording.
- ドルビーHXプロ: Equipped with Dolby HX PRO headroom extension for improved high-frequency recording linearity.
- 自動テープセレクター: Automatically detects and sets the correct equalization and bias for Normal, High (CrO2), and Metal type tapes.
- Metal Tape Recording Capability: Supports recording on Type IV (Metal) cassette tapes for enhanced sound quality.
- Skip Search Function: Allows for quick navigation between tracks on a recorded cassette tape.
- Auto-Reverse: Enables continuous playback or recording in both directions of the tape without manual intervention.
3. セットアップ
3.1 開梱
Carefully remove the cassette deck from its packaging. Ensure all accessories, if any, are present. Retain the packaging materials for future transport or storage.
3.2 配置
直射日光、熱源、過度のほこりや振動を避け、安定した平らな場所に設置してください。また、周囲に十分な換気を確保してください。
3.3 接続
- オーディオ出力接続： Connect the LINE OUT jacks on the rear of the K-185II-S to the LINE IN or TAPE IN jacks on your ampRCA オーディオ ケーブルを使用して、スピーカーまたはレシーバーを接続します。
- オーディオ入力接続（録音用）： Connect the LINE IN jacks on the rear of the K-185II-S to the LINE OUT or TAPE OUT jacks of your amplifier, receiver, or other audio source (e.g., CD player, tuner) using RCA audio cables.
- 電源接続: Plug the AC power cord into a standard AC100V, 50/60Hz wall outlet.
4. 操作手順
4.1 基本的な再生
- を押す 排出 ボタンを押してカセットコンパートメントを開きます。
- Insert a cassette tape with the open edge facing down and the side to be played facing forward. Close the compartment.
- を押す 遊ぶ ボタンを押します。テープの再生が始まります。
- 音量を調整します amp債権者または受取人。
- 再生を停止するには、を押します 停止 ボタン。
- 使用 巻き戻し or 早送り テープをナビゲートするためのボタン。
4.2 録音
- Insert a blank cassette tape into the compartment. Ensure the tape's erase protection tabs are intact if you intend to record.
- ご希望のオーディオソースを選択してください amplifier or receiver (e.g., CD, Tuner) that is connected to the K-185II-S LINE IN jacks.
- を押す 記録 button (usually simultaneously with the 遊ぶ button). The recording indicator will illuminate.
- オーディオ ソースの再生を開始します。
- Monitor the recording levels using the unit's level meters and adjust the recording level control on the K-185II-S (if available) or the output level of your source component to prevent distortion.
- 録音を停止するには、を押します 停止 ボタン。
4.3 オートリバース機能
The K-185II-S automatically reverses tape direction at the end of a side during playback or recording. This allows for continuous operation without manually flipping the tape. The direction indicator will show the current playback/recording direction.
4.4 ドルビーノイズリダクション
Engage the Dolby NR (Noise Reduction) switch to either 'B' or 'C' position to reduce tape hiss. Use the same Dolby setting for playback as was used for recording to ensure proper sound reproduction.
4.5 Skip Search Function
To use the skip search function, press the 検索をスキップ button (or equivalent) during playback. The deck will fast forward or rewind to the next or previous silent gap between tracks. Refer to the front panel controls for specific button labels.
5. メンテナンス
5.1 ヘッドとピンチローラーのクリーニング
Regularly clean the tape heads, pinch rollers, and capstans to ensure optimal sound quality and prevent tape damage. Use a cotton swab lightly dampened with isopropyl alcohol. Perform this cleaning after approximately 10-20 hours of use or if sound quality deteriorates.
5.2 Demagnetizing Heads
Over time, tape heads can become magnetized, leading to increased noise and dull sound. Use a tape head demagnetizer periodically (e.g., every 50-100 hours of use) to demagnetize the heads. Follow the demagnetizer's instructions carefully.
5.3 外装清掃
本体の外側は、柔らかく乾いた布で拭いてください。研磨剤入りの洗剤や溶剤は使用しないでください。
6。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| 電源なし | 電源コードが外れている；電源コンセントに不具合がある | 電源コードの接続を確認し、別のコンセントを試してください |
| 再生中に音が出ない | 入力の選択が間違っています amplifier; Audio cables disconnected; Volume too low | 正しい入力を選択してください amplifier; Check audio cable connections; Increase ampリファボリューム |
| Poor sound quality (dull, muffled) | Dirty tape heads; Magnetized tape heads; Incorrect Dolby NR setting | Clean tape heads; Demagnetize tape heads; Ensure Dolby NR setting matches recording |
| 録音できません | Tape erase protection tab removed; Incorrect input source selected | Cover the erase protection tab with tape; Select the correct input source on your ampリファイアー |
| Tape speed unstable (wow and flutter) | Dirty pinch rollers/capstans; Worn drive belt (internal) | Clean pinch rollers/capstans; If problem persists, professional service may be required |
7. 仕様
| 特徴 | 仕様 |
|---|---|
| モデルタイプ | Auto-reverse Stereo Cassette Deck |
| ノイズリダクションシステム | Dolby B/C NR, Dolby HX PRO |
| Track Format | 4トラック、2チャンネルステレオ |
| 記録方法 | ACバイアス |
| Erasingメソッド | AC Erase |
| テープ速度 | 4.8cm /秒 |
| ワウとフラッター | 0.07% (WRMS) / 0.14%W PEAK |
| Frequency Response (Normal Tape) | 20-15,000Hz (30-14,000Hz ±3dB) |
| Frequency Response (High Tape) | 20-16,000Hz (30-15,000Hz ±3dB) |
| Frequency Response (Metal Tape) | 20-17,000Hz (30-16,000Hz ±3dB) |
| S/N Ratio (Metal, Dolby NR OFF) | 58dB (3% THD level) |
| S/N Ratio Improvement (Dolby B) | 10dB（5kHz時） |
| S/N Ratio Improvement (Dolby C) | 20dB（5kHz時） |
| 入力ジャック | Line (1 system) |
| 入力感度（ライン） | 600mV |
| Input Impedance (Line) | 50kΩ |
| 出力ジャック | Line (1 system) |
| Standard Output (Line) | 500mV (0dB) |
| Load Impedance (Line) | 50kΩ以上 |
| モーター | 1 DC Servo Motor |
| ヘッド | 1 Hard Permalloy (Rec/Play), 1 Ferrite (Erase) |
| 電源 | AC100V、50 / 60Hz |
| 消費電力 | 9W |
| 寸法（幅×高さ×奥行き） | 185 × 131 × 289 mm |
| 重さ | 2.9キロ |
8. 保証とサポート
Specific warranty information for the ONKYO K-185II-S is not provided within this manual. For details regarding warranty coverage, service, or technical support, please refer to the warranty card included with your product or visit the official ONKYO webカスタマーサポートの連絡先は通常、メーカーの website or in accompanying documentation.