PreSonus BlueTube DP v2 ปรีแอมป์หลอด 2 แชนแนลสำหรับไมโครโฟน/เครื่องดนตรีamp คู่มือการใช้งาน

1. บทนำ

The PreSonus BlueTube DP v2 is a versatile 2-channel microphone and instrument preamplifier designed to offer both solid-state clarity and tube warmth. It features PreSonus' classic Class A XMAX solid-state mic preamplifier alongside a high-output 12AX7 tube preamp, การให้บริการ ample headroom and rich tone. The Tube Drive control allows for a range of sonic textures, from subtle warmth to pronounced distortion. With its dual combo mic/instrument inputs, the half-rackspace BlueTube DP v2 is suitable for various applications, including guitars, basses, and vocals.

รูปที่ 1: ด้านหน้าทำมุม view of the PreSonus BlueTube DP v2.

2. คุณสมบัติหลัก

• Dual-path design with 12AX7 vacuum tube and solid-state gain stagใช่
• Two combo mic/instrument inputs with Class A XMAX mic preampลิตเตอร์
• แหล่งจ่ายไฟ Phantom 48V สำหรับไมโครโฟนคอนเดนเซอร์
• Tube Drive control for adjustable tube-saturation.
• Illuminated Analog VU input-level meters for visual monitoring.
• 80 Hz high-pass filter to reduce low-frequency rumble.
• -20 dB pad for handling high-output sources.
• Polarity-reverse switch for phase correction.
• Compact 1/2U rack-mount chassis for flexible placement.

3. การตั้งค่า

3.1. การเชื่อมต่อ

Before powering on the unit, ensure all audio connections are made correctly.

Figure 2: Rear panel connections of the PreSonus BlueTube DP v2.

1. Microphone/Instrument Inputs: Connect your microphones or instruments to the combo XLR/TRS inputs on the rear panel. These inputs accept both XLR (for microphones) and 1/4-inch TRS/TS (for instruments) cables.
2. Balanced/Unbalanced Outputs: Connect the outputs of the BlueTube DP v2 to your audio interface, mixer, or recording device. Use XLR cables for balanced connections or 1/4-inch TRS/TS cables for unbalanced connections.

3.2. เปิดเครื่อง

Connect the provided 16VAC power adapter to the DC power input on the rear panel of the BlueTube DP v2. Plug the adapter into a suitable power outlet. The unit does not have a separate power switch; it powers on automatically when connected to power.

4. Operating the BlueTube DP v2

Figure 3: Front panel controls of the PreSonus BlueTube DP v2.

1. Gain Control: Adjust the GAIN knob for each channel to set the input level. Monitor the VU meter to ensure the signal is not clipping (entering the red zone).
2. หลอดไดรฟ์: The TUBE DRIVE knob controls the amount of tube saturation. Turn clockwise for more warmth and harmonic richness, or counter-clockwise for a cleaner, more transparent sound.
3. กำลังไฟ Phantom 48V: Press the 48V button to engage phantom power for condenser microphones. Ensure your microphone requires phantom power before activating.
4. -20 dB Pad: If your input source is very loud and causes clipping even with the GAIN knob at its minimum, press the PAD button to attenuate the input signal by 20 dB.
5. 80 Hz High-Pass Filter: Press the 80Hz button to activate a high-pass filter, which reduces low-frequency rumble and unwanted noise below 80 Hz.
6. Polarity Reverse: The Ø button reverses the polarity of the input signal. This can be useful for phase alignment when using multiple microphones.
7. วียูมิเตอร์: The illuminated analog VU meter provides a visual indication of your input signal level. Aim for the needle to stay within the green or yellow zones, avoiding the red (clipping) zone.

5. การบำรุงรักษา

5.1. การเปลี่ยนท่อ

The 12AX7 vacuum tube in your BlueTube DP v2 can be replaced if it degrades or if you wish to experiment with different tube characteristics. Exercise caution when handling electronic components.

1. หมดแรง: Disconnect the power adapter from the unit and allow it to cool down completely.
2. Access the Tube: ถอดcออกอย่างระมัดระวังasing screws to access the internal circuitry and the 12AX7 tube.
3. ถอดท่อเก่าออก: Gently pull the old tube straight out from its socket. Avoid twisting or bending the pins.
4. Insert New Tube: Align the pins of the new 12AX7 tube with the holes in the socket. Apply gentle, even pressure to push the tube straight into place.
5. ประกอบกลับเข้าที่: Securely reattach the casing.

6 การแก้ไขปัญหา

• ไม่มีเสียง:
  • ตรวจสอบการเชื่อมต่อสายเคเบิลทั้งหมด (สายเข้า สายออก สายไฟ)
  • Ensure the GAIN knobs are turned up.
  • Verify 48V phantom power is engaged if using a condenser microphone.
  • Confirm the connected microphone or instrument is functioning correctly.
• Distorted Sound/Clipping:
  • ลดปุ่ม GAIN ลง
  • Engage the -20 dB PAD button if the source is very loud.
  • Adjust the TUBE DRIVE knob to reduce saturation if desired.
  • Check the input level on your recording device/mixer.
• เสียงหึ่ง/เสียงรบกวน:
  • ตรวจสอบให้แน่ใจว่าสายเคเบิลทั้งหมดได้รับการป้องกันอย่างเหมาะสมและอยู่ในสภาพดี
  • Use balanced XLR cables for longer runs.
  • Try engaging the 80 Hz High-Pass Filter.
  • ตรวจสอบลูปกราวด์ในการตั้งค่าเสียงของคุณ

7. ข้อมูลจำเพาะ

8. การสนับสนุน

For additional support, warranty information, or to explore other PreSonus products, please visit the official PreSonus Store.

Visit the PreSonus Store