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- ȣȯ ¿Àµð¿À ¹× ºñµð¿À Àåºñ ½ºÅ¸ÀÏ: µðÁöÅÐ-¾Æ³¯·Î±× ÄÁ¹öÅÍ (DAC)
- À¯Çü: AUDIO
- ºê·£µå À̸§: BRZHIFI
- ±Ù¿ø: CN (Á¤Ç°)
- Áõ¸í¼: NONE
[xlmodel]-[custom]-[8888]
This is a kit, and you need to solder it yourself. Please evaluate your self-handling ability correctly. Chip scheme: CS8416+AK4393+5532 Size: about 80mm*80mm Power supply: dual 13-15V + single 9-15V, or only dual 13-15V
Have common status indications: 1. Power indicator 2. 96K When the input coaxial signal sampling rate is greater than or equal to 88.2K, it will light up. 3. ERROR, it will light up when the coaxial signal is not locked, usually the coaxial signal is not connected, or the wrong coaxial signal is input. 4. NO AUDIO, some players who have DVD players in their homes can also use this decoder to improve the sound quality output when DVD players play CDs. At the same time, the sound of some common DVD video discs with 2-channel audio tracks can also be decoded. When the digital signal output from DVD coaxial to MINI2496 is not 2-channel PCM data, this light will be on, and MINI2496 will enter the mute state. The decoder without mute function will output digital noise when receiving DTS or AC3 digital signal. . MINI2496 only needs to use a set of AC13-15V dual power supply and a set of AC9-15V single power supply. You can also short the two pads on the back of the PCB, so that a set of AC13-15V dual power supplies can work. Reduce the power requirements. The transformer is more than 10 watts. The main parameters A scalable chip selection program. Digital receiver uses CS8416 with excellent performance and stable work. At the same time, the chip`s own de-jitter function (that is, JITTER elimination) is turned on, and the CS8416 directly transmits the IIS signal to the core DAC conversion chip AK4393 after completing the conversion of the SPDIF to the IIS signal. AK4393 is an excellent DA converter chip produced by Japan`s AKM company. The company`s products are not as well-known as TI BB AD and Philips in the DIY industry, but they are very common in external sound cards and professional recording equipment. For example, ECHO`s GINA2496 external sound card, which sells for about 3K, uses AK4393. RMEs external sound card FF400 and innovative EMU0404 all use AKM chips. Among them, EMU0404 uses the AK4395 model. Since AK4393, AK4394, AK4395, and AK4396 are compatible models, MINI2496 also has high playability. Among them, the performance of the AK4395 is the most excellent, no wonder the EMU404 sound card will be used. The analog signal converted by the AK chip then enters the LPF circuit composed of commonly used dual op amps such as NE5532. At the same time, it is equipped with high-quality IC sockets from Zhengling Seiko. You can freely replace op amps such as OP275 OPA2604 LM4562 to change the taste. A simple but non-shrinking power supply scheme. The digital part uses a low-ripple two-stage voltage regulator, and the operational amplifier uses a 78-79 one-stage voltage regulator. The sound is more lively. At the same time, the DAC chip and the VD VA on the CS8416 use their respective patch 1117 stabilized power supplies to be independently supplied separately, and the digital power supply of the two chips are separated by magnetic beads. At the same time, there is an independent decoupling capacitor next to each active device. This is a condition that an excellent digital-analog hybrid circuit must have.
Installation introduction:
The chip pads in the kit have been soldered and checked. So the kit only needs to solder the in-line components. A constant temperature soldering station must be used for welding. 220V soldering iron cannot be used. The physical PCB is as follows:
The components are in the order from low to high, firstly solder the resistor and diode, the 2 magnetic beads are not soldered first, and then solder the electrodeless capacitor, connector, voltage regulator block, IC socket
Finally, solder the main filter capacitor and decoupling capacitor. There are two options for LEDs, soldering on the board or wiring to the panel, so the last is soldered. Before powering on, check whether the polarity of each capacitor is wrong to avoid fireworks. After connecting the transformer and energizing, first measure whether the output voltage of each stabilized IC is normal. The 7815 7915 red test lead measures the rightmost pin of the IC from the front. The black test lead is grounded. The 1117 can directly measure the large pad on the top or the pin in the middle below. After the voltage of each group is normal, solder two magnetic beads, which are L1 and L2 on the PCB. After inserting the op amp IC, power on and measure the midpoint of the output. A few millivolts of offset indicate that it is normal.
Note that all DAC kits cannot be soldered with a 220V soldering iron. This will cause static electricity to damage the chip. A constant temperature soldering station above 936 must be used for soldering. If the transformer has only AC 12-0-12V voltage. There is no separate set of voltages of 12-0 or 9-0V. Use only AC 12-0-12 V voltage. You can short the two points on the back of the PCB.
OK, wiring audition Point RMAA test The test sound card is EMU1212
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