1. ບົດແນະນຳ
This manual provides essential information for the safe and efficient use of your DENON PMA-2000IIR Integrated Amplifier. Please read this manual thoroughly before operating the unit and keep it for future reference. The PMA-2000IIR is designed to deliver high-fidelity audio performance, building upon the acclaimed PMA-2000 series with enhanced sound quality and robust construction.
2. ຄໍາແນະນໍາຄວາມປອດໄພ
To prevent electric shock, fire, and damage to the unit, observe the following safety precautions:
- ຢ່າເຮັດໃຫ້ເຄື່ອງນີ້ຖືກຝົນຫຼືຄວາມຊຸ່ມຊື່ນ.
- Do not remove the cover. Refer servicing to qualified personnel.
- ຮັບປະກັນການລະບາຍອາກາດທີ່ເຫມາະສົມ; ຫ້າມປິດປະຕູລະບາຍອາກາດ.
- Connect the unit to an AC 100V, 50/60Hz power supply only.
- ຫ້າມວາງສິ່ງຂອງທີ່ເຕັມໄປດ້ວຍຂອງແຫຼວ, ເຊັ່ນ vases, ໃສ່ເຄື່ອງ.
- Unplug the unit from the wall outlet if it will be unused for long periods.
3. ຜະລິດຕະພັນເກີນview
The DENON PMA-2000IIR is an integrated amplifier engineered for superior audio reproduction. Key features include:
- UHC-MOS High-Current Ampການຢືນຢັນ: ຜົນຜະລິດ stage utilizes UHC-MOS (Ultra High Current MOS) elements, providing a peak current supply capability of 120A, significantly higher than conventional designs, for powerful and dynamic sound.
- Advanced Power Supply: Features a newly developed power transformer with high-current, ultra-high-speed rectifier diodes. The core lamination thickness is approximately 20% greater, and the winding cross-sectional area is about 40% larger compared to the PMA-2000, reducing operating resistance.
- Precision Mechanical Ground Construction: This design minimizes interference from internal vibrations. Radiators, damped by elastic rubber and stabilizers, are directly attached to the bottom near newly developed high-damping feet, isolating the power transformer and other vibration sources.
- Precision Signal Ground Circuit: Suppresses noise signal inflow from constant current circuits and filters out currents other than the intended signal, ensuring signal purity.
- Twin-Monaural & 6-Block Structure: To prevent sound degradation from mutual circuit interference and noise, the power amplifier blocks are configured independently for left and right channels (twin-monaural). The unit also employs a 6-block structure, separating circuits with different signal levels.
- High-Quality Phono Equalizer: The phono equalizer section features a discrete first-stage circuit utilizing low-noise FETs for optimal vinyl playback.
- ອົງປະກອບພິເສດ: Incorporates selected high-quality parts, including power radiators with improved heat dissipation (20% thicker base with black anodizing), a dedicated transformer for control systems, OFC (Oxygen-Free Copper) internal wiring, inert gas-sealed relays, and high-quality carbon resistors/capacitors.
- Bi-wiring Speaker Terminals: Equipped with large, brass-machined speaker terminals compatible with bi-wiring configurations, along with an AC inlet type power cord.
- Pre-out Terminals: Provides pre-out terminals for system expansion.
ຮູບພາບ 1: ດ້ານຫນ້າ view of the DENON PMA-2000IIR Integrated Ampຮູບພາບນີ້ສະແດງໃຫ້ເຫັນ amplifier's front panel, including its gold finish, control knobs, and input selectors.
4. ຕັ້ງຄ່າ
4.1 ການຫຸ້ມຫໍ່ແລະການຈັດວາງ
- ລະມັດລະວັງເອົາ ampເຄື່ອງດູດຄວັນຈາກການຫຸ້ມຫໍ່ຂອງມັນ.
- ວາງຫນ່ວຍງານຢູ່ເທິງພື້ນຜິວທີ່ມີລະດັບຄວາມຫມັ້ນຄົງທີ່ມີການລະບາຍອາກາດທີ່ພຽງພໍ. ຫຼີກເວັ້ນການວາງມັນຢູ່ໃກ້ກັບແຫຼ່ງຄວາມຮ້ອນຫຼືຢູ່ໃນແສງແດດໂດຍກົງ.
- Ensure there is sufficient space around the unit for proper heat dissipation.
4.2 ເຊື່ອມຕໍ່ລໍາໂພງ
- Connect your speakers to the SPEAKER A or SPEAKER B terminals on the rear panel. Ensure correct polarity (+ to + and - to -).
- For bi-wiring, connect compatible speakers to both A and B terminals, ensuring the bi-wiring load impedance is within 4-16Ω.
- ໄດ້ amplifier supports speaker loads of 4-16Ω for A or B, and 8-16Ω for A+B.
4.3 ການເຊື່ອມຕໍ່ແຫຼ່ງສຽງ
- Connect your audio sources (CD player, turntable, etc.) to the appropriate input terminals (e.g., CD, TUNER, PHONO) on the rear panel using RCA cables.
- For turntables, connect to the PHONO MM or PHONO MC input depending on your cartridge type.
4.4 ການເຊື່ອມຕໍ່ພະລັງງານ
- Connect the supplied power cord to the AC INLET on the rear panel and then to a wall outlet (AC 100V, 50/60Hz).
- The unit also provides switched (max 120W total) and unswitched (max 240W) power outlets for other audio components.
5. ຄໍາແນະນໍາການດໍາເນີນງານ
5.1 ເປີດ/ປິດ
- Press the POWER button on the front panel to turn the unit on or off.
5.2 ການຄັດເລືອກການປ້ອນຂໍ້ມູນ
- Use the INPUT SELECTOR knob or buttons on the front panel to choose your desired audio source (e.g., CD, PHONO, TUNER).
5.3 ການຄວບຄຸມປະລິມານ
- Adjust the VOLUME knob to set the desired listening level. Start with a low volume and gradually increase it.
5.4 ການຄວບຄຸມສຽງ
- Use the BASS and TREBLE knobs to adjust the low and high frequencies to your preference.
- Bass: ±8dB at 100Hz.
- Treble: ±8dB at 10kHz.
5.5 Source Direct Function
- Engage the Source Direct function to bypass tone controls and other processing circuits for the purest audio signal path.
6. ບໍາລຸງຮັກສາ
6.1 ການທໍາຄວາມສະອາດ
- ເຊັດເຄື່ອງດ້ວຍຜ້າອ່ອນ, ແຫ້ງ. ຢ່າໃຊ້ເຄື່ອງເຮັດຄວາມສະອາດຂັດ, ຂີ້ເຜີ້ງ, ຫຼືສານລະລາຍ.
- ກວດໃຫ້ແນ່ໃຈວ່າໄດ້ຖອດປລັກເຄື່ອງອອກກ່ອນທຳຄວາມສະອາດ.
6.2 ລະບາຍອາກາດ
- Regularly check that the ventilation openings are not obstructed by dust or other materials.
7. ການແກ້ໄຂບັນຫາ
ຖ້າເຈົ້າປະສົບບັນຫາກັບເຈົ້າ amplifier, ອ້າງເຖິງບັນຫາທົ່ວໄປຕໍ່ໄປນີ້ແລະວິທີແກ້ໄຂ:
| ບັນຫາ | ສາເຫດທີ່ເປັນໄປໄດ້ | ການແກ້ໄຂ |
|---|---|---|
| ບໍ່ມີພະລັງງານ | ບໍ່ໄດ້ເຊື່ອມຕໍ່ສາຍໄຟ; ປິດເຄື່ອງແລ້ວ | Check power cord connection; Press the POWER button |
| ບໍ່ມີສຽງ | Incorrect input selected; Speaker cables disconnected; Volume too low | ເລືອກການປ້ອນຂໍ້ມູນທີ່ຖືກຕ້ອງ; ກວດເບິ່ງການເຊື່ອມຕໍ່ລໍາໂພງ; ເພີ່ມປະລິມານ |
| ສຽງບິດເບືອນ | Input signal too high; Speaker impedance mismatch; Damaged cables | Reduce source volume; Verify speaker impedance; Check/replace cables |
| ສຽງດັງ | Ground loop; Nearby electrical interference | Ensure proper grounding; Move unit away from other electronics |
If the problem persists after trying these solutions, please contact DENON customer support.
8. ຂໍ້ມູນຈໍາເພາະ
The following are the technical specifications for the DENON PMA-2000IIR Integrated Ampມີຊີວິດຊີວາ:
| ຄຸນສົມບັດ | ຂໍ້ມູນຈໍາເພາະ |
|---|---|
| ປະເພດ | ປະສົມປະສານ Ampມີຊີວິດຊີວາ |
| Rated Output (8Ω, 20Hz-20kHz, T.H.D. 0.07%) | ຂະ ໜາດ 80W + 80W |
| Practical Max Output (4Ω, 1kHz, T.H.D. 0.7%) | ຂະ ໜາດ 160W + 160W |
| Total Harmonic Distortion (8Ω, 1kHz) | 0.01% (at rated output -3dB) |
| ລຳ ໂພງອອກ ລຳ ໂພງ | A or B: 4-16Ω load; A+B: 8-16Ω load; Bi-wiring: 4-16Ω load |
| Phono MM Input Sensitivity/Impedance | 2.5mV / 47kΩ |
| Phono MC Input Sensitivity/Impedance | 0.2mV / 100Ω |
| Line Input Sensitivity/Impedance | 140mV / 70kΩ (Source Direct Off); 140mV / 30kΩ (Source Direct On) |
| RIAA Deviation (PHONO) | 20Hz-20kHz ± 0.5dB |
| Pre-out Output | 1V (CD line input, at 100mV input signal) |
| ການຕອບສະໜອງຄວາມຖີ່ (ໂດຍລວມ) | 5Hz-100kHz (0 to -3dB) |
| SN Ratio (Phono MM, 5mV input) | 91dB |
| SN Ratio (Phono MC, 0.5mV input) | 76dB |
| SN Ratio (Line) | 110dB |
| ການຄວບຄຸມສຽງເບດ | ± 8dB (100Hz) |
| ການຄວບຄຸມສຽງ Treble | ± 8dB (10kHz) |
| ການສະຫນອງພະລັງງານ | AC 100V, 50/60Hz |
| ການບໍລິໂພກພະລັງງານ | 250W |
| ຂະໜາດພາຍນອກ (ກວ້າງ x ສູງ x ຍາວ) | 434 x 180 x 478 ມມ |
| ນ້ຳໜັກ | 22.0 ກິໂລກຣາມ |
ໝາຍ ເຫດ: ຂໍ້ມູນສະເພາະແມ່ນມີການປ່ຽນແປງໂດຍບໍ່ຕ້ອງແຈ້ງ.
9. ການຮັບປະກັນແລະການສະຫນັບສະຫນູນ
For warranty information, please refer to the warranty card included with your product or visit the official DENON website. If you require technical assistance or have questions not covered in this manual, please contact DENON customer support. Please have your model number (PMA-2000IIR) and purchase details ready when contacting support.
Official DENON Webເວັບໄຊ: www.denon.com