1. はじめに
The TASCAM DR-70D is a 4-channel portable audio recorder designed for videographers and filmmakers. It provides high-quality multi-track recording capabilities in a compact form factor, suitable for mounting on or below a camera. This manual provides detailed instructions for the setup, operation, and maintenance of your DR-70D unit and the included AK-DR70C accessory kit.

Image 1.1: The TASCAM DR-70D 4-Channel Audio Recorder, designed for DSLR cameras.
2. 安全情報
Please read and understand all safety precautions before using this product. Retain this manual for future reference.
- 電源: Use only the specified power adapter or batteries. Ensure correct battery polarity when inserting.
- 水と湿気: Do not expose the unit to rain, moisture, or liquids. Avoid using near water sources.
- 換気: 通気口を塞がないでください。ユニット周囲に十分な空気の流れを確保してください。
- 熱: ユニットをラジエーター、暖房送風口、ストーブ、その他の熱を発生する装置などの熱源から遠ざけてください。
- クリーニング: 乾いた布でのみ清掃してください。液体洗剤やエアゾールは使用しないでください。
- サービス: この製品を自分で修理しようとしないでください。 すべてのサービスを資格のあるサービス担当者に依頼してください。
- 廃棄: 電池および電子部品は地域の規制に従って廃棄してください。
3. パッケージ内容
以下にリストされているすべてのアイテムがパッケージに含まれていることを確認してください。
- TASCAM DR-70D 4-Channel Portable Audio Recorder
- TASCAM AK-DR70C Accessory Kit, including:
- Fuzzy Windscreen
- Shock-absorbing Shoe Mount Adapter
- Two 3.5mm Stereo Cables
- USBケーブル
- 取扱説明書(本書)

Image 3.1: The TASCAM AK-DR70C Accessory Kit, including a fuzzy windscreen, two 3.5mm stereo cables, and a shoe mount adapter.
4.製品オーバーview
4.1. フロントパネルのコントロールとディスプレイ
The front panel of the DR-70D features the main display, input level controls, and recording buttons.

画像4.1:正面 view of the TASCAM DR-70D, showing the LCD screen, input gain knobs, and recording controls.
- LCDディスプレイ: Shows recording levels, time, battery status, and menu options.
- メニューボタン: Accesses the system settings and recording parameters.
- データノブ: Navigates menus and adjusts values. Press to confirm selections.
- Input Gain Knobs (1/L, 2/R, 3/L, 4/R): Adjusts the input level for each of the four channels.
- PEAKインジケーター: 入力信号が高すぎる場合に点灯し、クリッピングの可能性があることを示します。
- RECボタン: 録画を開始および停止します。
- DUAL REC Indicator: Lights up when Dual Recording mode is active.
- SLATE Button: Generates a slate tone for easy audio/video synchronization.
4.2. Side Panels (Inputs/Outputs)
The DR-70D features various input and output ports for versatile connectivity.

画像4.2: 側面 views of the TASCAM DR-70D, illustrating the XLR/TRS inputs on one side and the camera input/output, headphone jack, and remote port on the other.
- XLR/TRS Inputs (1-4): Four balanced inputs with phantom power (24V/48V) for connecting professional microphones.
- EXT IN 1/2: External input for connecting additional devices.
- リモートポート: For connecting an optional remote control.
- IN-●-OUT (Camera Input/Output): 3.5mm stereo mini-jack for connecting to a DSLR camera. The input allows monitoring camera audio, and the output sends the DR-70D's mix to the camera.
- 電話ジャック: 3.5mm stereo headphone output for monitoring audio.
- ラインアウト: Stereo line output for connecting to external mixers or other audio devices.
- USBポート: For data transfer and firmware updates.
4.3. 内蔵マイク
DR-70D には、外部マイクなしで周囲の音をキャプチャしたり、素早くステレオ録音したりするための全方向性マイクが 2 つ内蔵されています。

Image 4.3: The TASCAM DR-70D mounted on a DSLR camera, with indicators pointing to the built-in omnidirectional microphones (Mic 1 and Mic 2).
4.4. 取り付けオプション
The compact design allows for versatile mounting options, including above or below a camera, or on a tripod.

Image 4.4: The TASCAM DR-70D showcasing its compact and robust design, suitable for various mounting configurations.
- Tripod Threads: Located on the bottom for mounting on tripods or follow-focus cages.
- ホットシューマウント: The optional AK-DR70C adapter allows mounting the DR-70D on a camera's hot shoe.
5. セットアップ
5.1. ユニットの電源供給
The DR-70D can be powered by AA batteries (x4), a USB power bank, or an optional AC adapter.
- バッテリーの取り付け: Open the battery compartment on the rear of the unit and insert four AA batteries, observing correct polarity.
- USB電源: Connect a USB power bank to the USB port for extended operation.
5.2. Inserting SD Card
The DR-70D records to SD, SDHC, or SDXC cards (up to 128GB).
- ユニットの側面にある SD カード スロットを見つけます。
- Insert the SD card until it clicks into place. To remove, push the card in again until it springs out.
5.3. マイクの接続
Connect your microphones to the XLR/TRS inputs (1-4) or use the built-in microphones.
- For condenser microphones requiring phantom power, enable 24V or 48V phantom power in the menu settings for the respective input channels.
- The 3.5mm stereo mini jack input (EXT IN 1/2) supports standard video camera mics with plug-in power.
5.4. カメラへの取り付け
To mount the DR-70D on a DSLR camera:
- Attach the shock-absorbing shoe mount adapter (from AK-DR70C) to the bottom of the DR-70D.
- Slide the adapter into your camera's hot shoe.

Image 5.1: The TASCAM DR-70D mounted on a DSLR camera, demonstrating a typical setup for videography.
5.5. Connecting to DSLR (Input/Output)
Use the provided 3.5mm stereo cables to connect the DR-70D to your DSLR camera.
- Connect the DR-70D's ラインアウト to your camera's audio input for recording the mixed audio directly to your camera.
- Connect your camera's audio output to the DR-70D's IN-●-OUT (Camera Input) to monitor the camera's audio through the DR-70D's headphone jack.

Image 5.2: Close-up of the TASCAM DR-70D's camera input jack, used for monitoring audio from the camera.

Image 5.3: Close-up of the TASCAM DR-70D's camera output jack, used for sending the recorder's audio mix to the camera.
6. 操作手順
6.1. 基本的な録音
- Power on the DR-70D.
- Connect your microphones and set input levels (see 6.2).
- を押す 記録 button once to enter record-ready mode.
- を押す 記録 もう一度押すと録音が開始されます。RECインジケーターが点灯します。
- 録音を停止するには、を押します 記録 ボタン。
6.2. 入力レベル調整
Adjust the input gain for each channel using the dedicated knobs on the front panel. Aim for levels that peak around -6dB to -12dB on the meter to avoid clipping.
- もし、 ピーク indicator lights up frequently, reduce the input gain.
- The DR-70D features high-quality HDDA mic preamps with up to 64dB of gain.

Image 6.1: The TASCAM DR-70D features Ultra High Definition Discrete Architecture (HDDA) mic preamps for clear audio capture.
6.3. 録音モード
The DR-70D offers multiple recording modes to suit different scenarios:
- モノラル/デュアルモノラル: Ideal for recording a single performer. Dual Mono records a safety track at a lower level.
- ステレオ/デュアルステレオ: Best for recording with the built-in microphones or an external stereo mic. Dual Stereo records a safety track.
- 2MIX/DUAL 2MIX: ステレオを作成 files from two or more mixed inputs. Dual 2MIX creates a backup track at up to 12dB lower levels to prevent distortion.

Image 6.2: Illustration of the DR-70D in MONO/DUAL MONO recording mode, suitable for single-source audio.

Image 6.3: Illustration of the DR-70D in STEREO/DUAL STEREO recording mode, for stereo sound capture.

Image 6.4: Illustration of the DR-70D in 2MIX/DUAL 2MIX recording mode, showing a setup with multiple microphones.
6.4. 内蔵ミキサーの使用
The DR-70D includes a built-in mixer for its four inputs, allowing for individual recording and stereo mixing. Access mixer functions via the MENU button.

Image 6.5: The TASCAM DR-70D's display showing the built-in mixer interface with four inputs and two outputs.
- パン: Adjusts the stereo position of each input.
- リミッタ: Prevents input signals from exceeding a set level, reducing distortion.
- ローカットフィルター: 不要な低周波ノイズ(風切り音、ゴロゴロ音など)を低減します。
- Mid-Side Decoding: For use with Mid-Side microphone configurations.
6.5. Slate Tone Generator
The slate tone generator produces reference tones to simplify audio/video alignment in post-production.
- を押し続けます スレート button to generate a tone manually.
- Slate tones can also be set to generate automatically at the start and/or end of recordings via the menu.

Image 6.6: Close-up of the TASCAM DR-70D's SLATE button, used for generating alignment tones.
6.6. オーディオのモニタリング
ヘッドフォンをに接続します 電話 jack to monitor your audio during recording and playback. Adjust headphone volume using the dedicated knob.
6.7.再生
Use the transport controls (Play, Stop, Fast Forward, Rewind) on the front panel to review あなたの録音。
7. メンテナンス
- クリーニング: 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。
- ストレージ: Store the DR-70D in a cool, dry place away from direct sunlight and extreme temperatures. Remove batteries if storing for extended periods.
- ファームウェアの更新: TASCAMをチェック web最適なパフォーマンスを確保するために、ファームウェアのアップデートを定期的にサイトで確認してください。
8。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| ユニットの電源が入りません。 | Dead batteries; incorrect battery insertion; no power source. | Replace batteries; check battery polarity; connect USB power or AC adapter. |
| 音声は録音されません。 | Microphones not connected; input gain too low; phantom power off for condenser mics; incorrect recording mode. | Check mic connections; increase input gain; enable phantom power; verify recording mode settings. |
| 歪んだ音声。 | Input gain too high; limiter off. | Reduce input gain; enable limiter. |
| SDカードエラー。 | Card not inserted correctly; incompatible card; card full; card corrupted. | Reinsert card; use compatible SD/SDHC/SDXC card; delete files or use new card; format card (will erase data). |
| No headphone output. | Headphone volume too low; headphones not connected; incorrect monitoring source. | Increase headphone volume; check headphone connection; select correct monitoring source in menu. |
9. 仕様
| 特徴 | 仕様 |
|---|---|
| ブランド | タスカム |
| モデル | DR-70D |
| ハードウェアインターフェイス | セキュアデジタルカード |
| マイクフォームファクター | Built-In, Lavalier, Shotgun (via inputs) |
| オーディオフォーマット | WAVAファイル |
| ヘッドフォンジャック | 3.5ミリメートル |
| デジタル録音時間 | Up to 120 hours (depending on card size and settings) |
| マイク操作モード | Stereo (built-in mics) |
| 入力 | 4 x XLR/TRS combo, 1 x 3.5mm stereo mini-jack (EXT IN 1/2) |
| 出力 | 1 x 3.5mm stereo mini-jack (LINE OUT), 1 x 3.5mm stereo mini-jack (PHONES) |
| ファントムパワー | 24V/48V選択可能 |
| ストレージメディア | SD card (64MB to 2GB), SDHC card (4GB to 32GB), SDXC card (48GB to 128GB) |
10. 保証とサポート
For warranty information and technical support, please refer to the warranty card included with your product or visit the official TASCAM webサイトでご確認ください。保証請求に備えて購入証明書を保管してください。
- オンラインリソース: The TASCAM website provides FAQs, driver downloads, and additional support documentation.
- サポートへのお問い合わせ: Contact TASCAM customer service for assistance with product issues or repairs.