Įvadas
The S.M.S.L SD-793II is a high-performance Digital-to-Analog Converter (DAC) with an integrated headphone amplifier. It is designed to convert digital audio signals from various sources into high-fidelity analog audio, suitable for connection to amplifiers, active speakers, or headphones. This manual provides essential information for the proper setup, operation, and maintenance of your SD-793II unit.
Figure A: The S.M.S.L SD-793II unit, a compact digital to analog converter with integrated headphone ampgyvesnis.
Produkto savybės
- Utilizes the advanced DIR9001 digital receiver chip, supporting up to 24-bit/96KHz signal reception.
- Incorporates the high-quality PCM1793 D/A converter chip for 192K/24Bit audio conversion.
- Features an active low-pass filter output with an OPA2134 operational amplifier, which can be changed by the user for sound customization.
- Supports both coaxial and optical fiber digital audio inputs with a convenient switch.
- Integruotos ausinės amplifier with a 6.35mm headphone jack on the front panel.
- Provides both RCA and headphone jack analog audio outputs.
- Constructed with a durable aluminum shell, precision CNC processed, with an oxidized finish and a custom solid aluminum anti-skid volume knob.
Pakuotės turinys
Patikrinkite pakuotę, ar joje yra šie daiktai:
- S.M.S.L SD-793II DAC Unit
- Maitinimo adapteris (DC 9V)
- Greitos pradžios vadovas
Jei trūksta kokių nors prekių arba jos pažeistos, susisiekite su pardavėju.
Figure B: The S.M.S.L SD-793II unit shown with its power adapter and retail packaging.
Saugos instrukcijos
- Maitinimas: Naudokite tik pateiktą maitinimo adapterį. Įsitikinkite, kad įtampatage atitinka jūsų vietinį maitinimo šaltinį.
- Vėdinimas: Neužblokuokite jokių ventiliacijos angų. Užtikrinkite pakankamą oro cirkuliaciją aplink įrenginį, kad jis neperkaistų.
- Vanduo ir drėgmė: Saugokite įrenginį nuo lietaus, drėgmės ar lašančių/taškomų skysčių. Nestatykite ant įrenginio daiktų, pripildytų skysčių, pavyzdžiui, vazų.
- Šilumos šaltiniai: Laikykite įrenginį atokiau nuo šilumos šaltinių, tokių kaip radiatoriai, šildytuvai, viryklės ar kiti prietaisai (įskaitant ampkeltuvai), kurie gamina šilumą.
- Aptarnavimas: Nemėginkite patys aptarnauti šio gaminio. Visą techninę priežiūrą patikėkite kvalifikuotam aptarnavimo personalui.
- Valymas: Unplug the unit from the power outlet before cleaning. Use a dry, soft cloth only.
Sąranka
- Prijunkite maitinimą: Insert the DC 9V power adapter into the "DC+9V" input jack on the rear panel of the SD-793II. Plug the adapter into a wall outlet.
- Prijunkite skaitmeninį garso šaltinį:
- Optinė įvestis: Connect an optical fiber cable from your digital audio source (e.g., TV, CD player, game console) to the "OPTICAL" input on the rear panel.
- Koaksialinė įvestis: Connect a coaxial cable from your digital audio source (e.g., DVD player, computer sound card) to the "COAXIAL" input on the rear panel.
Svarbu: Ensure your digital audio source is configured to output PCM stereo audio. Multichannel formats like Dolby Digital or DTS are not supported and may result in no sound or clicking noises.
- Prijunkite analoginę garso išvestį:
- RCA išvestis: Connect RCA cables from the "R OUT" (right) and "L OUT" (left) jacks on the rear panel to your amplifier, active speakers, or other analog audio input device.
- Ausinių išvestis: For private listening, plug your headphones into the 6.35mm headphone jack on the front panel.
Figure 1: Rear panel connections of the SD-793II, illustrating optical, coaxial digital inputs, RCA analog outputs, and the DC 9V power input.
Figure 2: Front panel controls of the SD-793II, including the power button, input select button, 6.35mm headphone jack, and volume control knob.
Naudojimo instrukcijos
- Maitinimo įjungimas/išjungimas: Press the "POWER" button on the front panel to turn the unit on or off. An indicator light will illuminate when the unit is powered on.
- Pasirinkite įvestį: Press the "SELECT" button on the front panel to switch between the optical and coaxial digital inputs. The corresponding indicator light will show the active input.
- Adjust Headphone Volume: Rotate the large knob on the front panel to adjust the volume for the connected headphones. This control only affects the headphone output. The RCA line output is fixed.
Priežiūra
- Valymas: Use a soft, dry cloth to wipe the exterior of the unit. Do not use liquid cleaners or solvents.
- Saugykla: Jei įrenginį ilgesnį laiką sandėliuosite, atjunkite jį nuo maitinimo šaltinio ir laikykite vėsioje, sausoje vietoje.
- Komponento keitimas: The OPA2134 operational amplifier is user-changeable. If you choose to replace it, ensure the unit is powered off and unplugged. Exercise caution and refer to appropriate guides for safe component handling.
Trikčių šalinimas
- Nėra garso išvesties:
- Ensure the unit is powered on and the power adapter is securely connected.
- Verify that the correct input (Optical or Coaxial) is selected using the "SELECT" button.
- Check all audio cable connections (digital input, RCA output, headphone).
- Confirm that your digital audio source is outputting PCM stereo audio, not a multichannel format (e.g., Dolby Digital, DTS). Adjust source settings if necessary.
- If using headphones, ensure the volume knob is turned up.
- Test with a different audio source or output device to isolate the problem.
- Iškraipytas arba prasta garso kokybė:
- Patikrinkite, ar nėra laisvų kabelių jungčių.
- Ensure the digital audio source is set to PCM stereo output.
- Patikrinkite, ar sample rate and bit depth of the input signal are within the supported range (up to 24-bit/96KHz for DIR9001, 192K/24Bit for PCM1793).
- If using headphones, ensure they are properly connected and not damaged.
- Clicking Noise from Unit:
- A mechanical relay inside the unit may produce a click when the audio signal starts or stops, or when switching sources. This is normal operation.
- If continuous clicking occurs, ensure your digital audio source is set to PCM stereo output, not a multichannel format.
- Įrenginys neįsijungia:
- Check the power adapter connection to both the unit and the wall outlet.
- Įsitikinkite, kad sieninis lizdas veikia.
- Išbandykite kitą maitinimo lizdą.
Specifikacijos
| Įvesties sąsaja | Coaxial or Optical Fiber (with switch) |
| Įvesties dažnis | 44.1, 48, 96 KHz / 16 / 24 BIT |
| Signalo ir triukšmo santykis (SNR) | > 113 dB |
| Dinaminis diapazonas | 105 dB |
| Distortion (1 KHz) | < 0.0006 % |
| Vardinė galia | 1.7 VPP |
| Dažnio atsakas | 20 - 20 KHz (-0.2 dB) |
| Bendra išėjimo galia | < 8 W |
| Ausinių išvesties galia | 65 mW @ 16Ω; 130 mW @ 32Ω |
| Headphone Output Distortion | 0.01% THD + N @ 100mW/32Ω |
| Kanalų skaičius | 2 |
| Gaminio matmenys | 8.9 x 6.7 x 2.5 colio |
| Prekės svoris | 14.4 uncijos |
| Modelio numeris | SD793II |
Informacija apie garantiją
S.M.S.L products are designed and manufactured to the highest quality standards. Specific warranty terms and conditions may vary by region and retailer. Please retain your proof of purchase for any warranty claims. For detailed warranty information, refer to the documentation provided with your purchase or contact your authorized S.M.S.L dealer.
Pagalba klientams
For technical assistance, troubleshooting, or service inquiries, please contact your local S.M.S.L distributor or the retailer from whom you purchased the product. You may also visit the official S.M.S.L websvetainėje, kur rasite papildomų išteklių ir kontaktinės informacijos.
