1. Įvadas
This manual provides detailed instructions for the proper setup, operation, and maintenance of your Douk Audio A5 TPA3255 Stereo Amplifier. Please read this manual thoroughly before using the product to ensure optimal performance and safety. The Douk Audio A5 is a high-fidelity Class D power amplifier designed for home stereo and theater audio systems, offering powerful and clear sound reproduction for passive bookshelf or tower speakers.
2. Saugos informacija
- Maitinimas: Use only the provided power adapter or one with identical specifications (DC 24V-48V). Incorrect voltage galite sugadinti įrenginį.
- Vėdinimas: Užtikrinkite tinkamą vėdinimą aplink amplifier. Do not block ventilation openings. Avoid placing the unit in enclosed spaces or on soft surfaces that may impede airflow.
- Drėgmė: Laikykite amplifier away from water, moisture, and high humidity environments. Do not operate with wet hands.
- Šiluma: Casing may become warm during operation, which is normal. Avoid placing the unit near heat sources or in direct sunlight.
- Tvarkymas: Elkitės su įrenginiu atsargiai. Venkite jo numesti ir stipriai sutrenkti.
- Aptarnavimas: Do not attempt to open or repair the unit yourself, except for specified user-serviceable parts like op-amps. Refer all servicing to qualified personnel.
3. Kas yra dėžutėje
Išpakuodami patikrinkite, ar yra visi šie daiktai:
- 1 x Douk Audio A5 Ampgyvybingesnis
- 1 x DC 32V/5A maitinimo adapteris
- 1 x Naudotojo vadovas (šis dokumentas)
4. Produktas baigtasview
4.1 Priekinio skydelio valdikliai
Image: Front panel of the Douk Audio A5 ampgyvesnis.
The front panel features two main control knobs and a power button. The left knob controls the High-Pass Filter (HPF) frequency, ranging from 30Hz to 200Hz, with an 'off' position. The right knob serves as both the power on/off switch and the volume control.
4.2 Galinio skydelio jungtys
Image: Rear panel connections of the Douk Audio A5 ampgyvesnis.
Galiniame skydelyje yra visos reikalingos įvesties ir išvesties jungtys:
- GARSO ĮVESTIS (RCA): Stereo RCA input for connecting audio sources like CD players, DACs, or preampgelbėtojai.
- AUX išvestis (3.5 mm): 3.5mm auxiliary output, typically used for connecting to an active subwoofer.
- SPK OUT (Speaker Terminals): Gold-plated binding posts for connecting passive speakers. Ensure correct polarity (red for positive, black for negative).
- DC 24V–48V: Power input for the DC power adapter.
4.3 Internal Components and Op-Amp Riedėjimas
Vaizdas: vidinis view of the Douk Audio A5, highlighting the op-amp lizdai.
The Douk Audio A5 features a transparent top panel, allowing visibility of the internal circuitry. This design also facilitates easy access to the op-amp sockets for users who wish to customize the sound profile by 'op-amp rolling'.
4.4 LED Ambiance and PFFB Technology
Image: Internal LED lighting and color selection DIP switches.
The amplifier includes adjustable internal LED lighting with multiple color options, controlled by DIP switches located on the circuit board. This allows for aesthetic customization. The unit also incorporates Post-Filter Feedback (PFFB) technology and a 4-layer immersion gold PCB, which contribute to reduced distortion, improved frequency response, and efficient heat management.
4.5 Šilumos išsklaidymas
Image: Heat dissipation pathways of the ampgyvesnis.
The amplifier's design includes advanced full-body heat dissipation to ensure stable performance even during prolonged high-power output. It is normal for the casing to become warm during operation.
5. Sąrankos instrukcijos
Follow these steps to set up your Douk Audio A5 ampgyvybingesnis:
- Prijunkite garsiakalbius: Connect your passive speakers to the 'SPK OUT' binding posts on the rear panel. Ensure that the positive (+) terminal of the amplifier connects to the positive terminal of the speaker, and the negative (-) terminal connects to the negative terminal. Tighten the binding posts securely. The amplifier supports speakers with an impedance of 4Ω to 8Ω.
- Prijungti garso šaltinį: Connect your audio source (e.g., CD player, DAC, computer) to the 'AUDIO IN' RCA inputs on the rear panel using appropriate RCA cables.
- (Optional) Connect Subwoofer: If using an active subwoofer, connect its input to the 'AUX OUT' 3.5mm jack on the amplifier using a 3.5mm audio cable.
- Prijunkite maitinimą: Connect the provided DC 32V/5A power adapter to the 'DC 24V-48V' input on the rear panel. Then, plug the power adapter into a wall outlet.
- Maitinimas: Turn the right knob on the front panel clockwise to power on the amplifier. The internal LEDs will illuminate.
Demonstracinio vaizdo įrašo sąranka
Video: A demonstration of the Douk Audio A5 amplifier's features and setup, including internal component access and LED lighting.
6. Naudojimo instrukcijos
6.1 Pagrindinės operacijos
- Maitinimo įjungimas/išjungimas: Rotate the right knob clockwise to turn on the amplifier. Rotate it counter-clockwise until it clicks to turn off.
- Garsumo valdymas: Adjust the right knob clockwise to increase volume and counter-clockwise to decrease volume.
6.2 Aukštųjų dažnių filtro (HPF) reguliavimas
Image: High-Pass Filter control and its effect on frequency response.
The left knob controls the High-Pass Filter. This feature allows you to cut off low frequencies from your main speakers, which is particularly useful when using an active subwoofer. By filtering out low frequencies from your main speakers, you can improve their clarity and allow the subwoofer to handle the bass more effectively.
- Rotate the left knob to select a cutoff frequency between 30Hz and 200Hz.
- Set the knob to 'off' to bypass the HPF and allow full-range audio to your main speakers.
6.3 op-Amp Replacement (Op-Amp Rolling)
Image: Demonstrating op-amp replacement using tweezers.
The Douk Audio A5 allows for easy replacement of operational ampgelbėtojai (op.amps) to customize the amplifier's sound characteristics. This process is known as 'op-amp rolling'.
- Išjunkite ir atjunkite: Užtikrinti, amplifier is powered off and disconnected from the power supply.
- Remove Top Panel: Carefully lift the transparent top panel to access the internal circuit board.
- Remove Existing Op-Amps: Using a suitable tool (e.g., IC extractor or small flat-head screwdriver), gently pry up the existing op-amp chips from their sockets. Be careful not to bend the pins.
- Insert New Op-Amps: Align the pins of the new op-amp chips with the sockets. Ensure the orientation (usually indicated by a dot or notch on the chip and socket) is correct. Gently press the op-amps into place until they are fully seated.
- Replace Top Panel: Carefully place the transparent top panel back onto the ampgyvesnis.
- Reconnect Power and Test: Reconnect the power supply and power on the amplifier to test the new op-amps.
Note: Only replace op-amps with compatible models. Refer to online resources or consult with audio experts if unsure.
6.4 Adjusting LED Colors
The internal LED lighting can be adjusted to various colors using DIP switches on the circuit board. To change the color:
- Išjunkite ir atjunkite: Užtikrinti, amplifier is powered off and disconnected from the power supply.
- Remove Top Panel: Carefully lift the transparent top panel.
- Locate DIP Switches: Identify the small DIP switches on the circuit board, typically labeled 1, 2, 3, and R, G, B.
- Adjust Switches: Use a small tool (like tweezers or a pen tip) to toggle the switches to achieve your desired color combination. Refer to the diagram on the circuit board or in the image above for specific color settings.
- Replace Top Panel: Carefully place the transparent top panel back onto the ampgyvesnis.
- Iš naujo prijunkite maitinimą: Reconnect the power supply and power on the amplifier to see the new LED color.
7. Priežiūra
- Valymas: Naudokite minkštą, sausą šluostę, kad nuvalytumėte prietaiso išorę ampNenaudokite skystų valiklių ar abrazyvinių medžiagų.
- Saugykla: Kai ilgesnį laiką nenaudojate, laikykite ampLaikyti vėsioje, sausoje vietoje, toliau nuo tiesioginių saulės spindulių ir ekstremalių temperatūrų.
- Vėdinimas: Regularly check that the ventilation holes are free from dust and debris to prevent overheating.
8. Problemų sprendimas
If you encounter any issues with your Douk Audio A5 amplifier, please refer to the following troubleshooting guide:
| Problema | Galima priežastis | Sprendimas |
|---|---|---|
| Nėra galios | Maitinimo adapteris neprijungtas arba sugedęs; maitinimo lizdas neveikia. | Įsitikinkite, kad maitinimo adapteris yra tvirtai prijungtas prie abiejų amplifier and a working power outlet. Test the outlet with another device. |
| Nėra garso išvesties | Incorrect speaker connections; audio source not connected or playing; volume too low; incorrect input selection (if applicable). | Check all speaker and audio source connections for proper seating and polarity. Ensure the audio source is playing and the amplifier volume is turned up. |
| Iškraipytas garsas | Volume too high; faulty cables; incorrect speaker impedance; damaged speakers. | Reduce the volume. Check audio cables for damage and replace if necessary. Ensure your speakers' impedance is compatible (4-8Ω). Test with different speakers if possible. |
| Pertraukiamas garsas | Loose connections; faulty cables; overheating. | Patikrinkite visas jungtis. Įsitikinkite, kad ampkeltuvas turi tinkamą ventiliaciją, kad būtų išvengta perkaitimo. |
| HPF not working | HPF knob set to 'off'. | Rotate the left HPF knob to a frequency setting (e.g., 30Hz, 80Hz, 200Hz) instead of 'off'. |
Jei problema išlieka ir išbandžius šiuos sprendimus, kreipkitės į „Douk Audio“ klientų aptarnavimo tarnybą.
9. Specifikacijos
Image: Output power table for Douk Audio A5.
| Funkcija | Specifikacija |
|---|---|
| Modelis | A5 |
| Prekės ženklas | „Douk Audio“. |
| Kanalų skaičius | 2 |
| Ampkeltuvas Chip | TPA3255 |
| Output Power (32V/5A) | 78W+78W (4Ω), 71W+71W (6Ω), 65W+65W (8Ω) |
| Output Power (36V/6A) | 107W+107W (4Ω), 100W+100W (6Ω), 94W+94W (8Ω) |
| Output Power (48V/5A) | 120W+120W (4Ω), 110W+110W (6Ω), 102W+102W (8Ω) |
| Output Power (48V/10A) | 250W+250W (4Ω), 210W+210W (6Ω), 185W+185W (8Ω) |
| Aukšto dažnio filtras (HPF) | Adjustable 30-200Hz |
| Įvesties jautrumas | 0.775 V |
| Dažnio atsakas | 20 Hz–20 kHz (± 0.5 dB) |
| SNR | ≥108dB |
| THD | 0.002 % |
| Garsiakalbio varža | 4-8Ω |
| Garso įvestis | Stereo RCA |
| Garso išvestis | Speaker Terminals, 3.5mm AUX Out |
| Darbo ttage | DC 24V-48V |
| Matmenys (P*G*A) | 102 mm x 130 mm x 33 mm (4.02 x 5.12 x 1.30 colio) |
| Grynasis svoris | 506 g (1.12 svaro) |
| Medžiaga | Aliuminis |
10. Garantija ir palaikymas
10.1 Informacija apie garantiją
Douk Audio products typically come with a standard manufacturer's warranty. Please refer to the warranty card included with your product or visit the official Douk Audio webKonkrečias garantijos sąlygas ir nuostatas rasite svetainėje. Išsaugokite pirkimo kvitą kaip pirkimo įrodymą garantijos pretenzijoms.
10.2 Pagalba klientams
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Douk Audio customer support. You can usually find contact information on the official Douk Audio websvetainėje arba per pardavėją, iš kurio įsigijote produktą.
Internetiniai ištekliai:
- Aplankykite „Douk Audio“ parduotuvė „Amazon“ platformoje dėl produkto informacijos ir atnaujinimų.
