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HTPC
Part 4
Audio Card
Almost all modern motherboards have onboard sound chipset supporting analog Surround Sound Outputs and S/PDIF Digital Output. For average listener sound quality produced by motherboard internal chipset through analog outputs is quite good. Some boards have a problem with filtration digital noise produced by motherboard itself and switching power supply. For Audiophile, of course, purity of the sound is most important in Top HiFi HTPC System. The best solution is external high quality Audio Card.
In my system I use one of the best on the market sound card XONAR HDAV 1.3 Deluxe made by ASUS.
The Blu-Ray Quality Audio with HDMI 1.3 Compliance, Video Enhancement and 7.1 Channel Analog Output.
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- Full-HD Audio/Video digital output |
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Xonar HDAV1.3 invents its fantastic audio quality with proprietary ASUS AV200, high quality oversampling digital to analog converters (Burr-Brown PCM1796, 123dB SNR), National Semiconductor LM4562 OP AMP, and analog-to-digital converter (Cirrus Logic CS5381, 120dB SNR).
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The new swappable OPAMP socket design on Xonar HDAV allows customers to change to other high-quality OPAMPs for preferred analog sound color
New Generation HTPC Standard
PAPS with AACS Compliance for Original Quality BD-Audio Output
With upgradeable PAPS on Xonar HDAV1.3, new lossless compressed digital audio formats, such as Dolby® TrueHD and DTS-HD Master Audio™ will be supported for theater-like, professional sound quality, and full flavor output at 96K or 192K is guaranteed.
Power Amplifiers
My HTPC is equipped with Digital Power Amplifiers for Surround Sound Rear, Side, Center Channels. I use 3 boards of dual channel Digital Power Amplifier Tripath Class-D with output of 2x100W each, made by Sure Electronics, based on TK2050 Chip. It is very efficient design, giving very pleasant sound.
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Wide power supply range: 12V to 30V, maximum 32V
Frequency response: 20Hz to 20KHz(±3dB)
Signal/Noise Ratio: 100dB(A-Weighted)
High Output Power 2x100W/4Ω High Efficiency 86% @ 60W 8Ω Audiophile Quality Sound
0.007% THD+N @ 30W 8Ω |
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For Main Front Left and Front Right channel I recommend to use the best available Analog Amplifier. Most of music material is still in Stereo format and reproducing the music sound with best possible quality requires the best possible Amplifier and Speakers for front main channels.
Locations of components in the case
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THIS IS VIEW OF OLD SYSTEM WITH VIDEO CARD AND ASUS MB
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