The Full Digital AMP

[cac liu]

Has anyone ever try the APOGEE full digital AMP?

The DDX-8001 or the DDX-8000, I had just did one ,It is great.

http://bbs.hifidiy.net/viewthread.php?tid=140077

[ak_47_boy]

I have never heard of it. Out of curiosity, what does this mean? The pulse width is controlled digitally? Sounds like a good idea to me.

[cac liu]

yes,it is amplify digitally,like a DAC can amplify.

[Neil Davis]

Originally posted by cac liu
Has anyone ever try the APOGEE full digital AMP?

The DDX-8001 or the DDX-8000, I had just did one ,It is great.

http://bbs.hifidiy.net/viewthread.php?tid=140077

I've got two of the Spherex 5.1 XBox amps, which use the DDX-8001. I was able to piggy-back a board that has a micro and USB interface. So far I can control the volume from a VB.net application. Working on the biquads next.

The current version of the chip is the STA-30813, successor to the STA308. ST has sold a lot of these chips and they are used in many home theater systems. I wish I knew which ones so I could buy them to re-use the amplifier boards. The JVC model TH-S2 uses the STA308 and I know that at least one budget RCA amp used the same chip.

These are very nice amps, and with 10 digital biquads you can build some nice crossovers and do a lot of EQ.

[cac liu]

Yes,it sounds very nice!
the DDX-8001 has 8 channels,The AMP board I used is a 6 channels AMP+2 channels Phone AMP

Just use the DDX-8001 ,you can achieve all the functions.

[panda360]

Originally posted by cac liu
Yes,it sounds very nice!
the DDX-8001 has 8 channels,The AMP board I used is a 6 channels AMP+2 channels Phone AMP

Just use the DDX-8001 ,you can achieve all the functions.

Hi Cac,


I have find the firnd the source of DDX-8001, I cannot find the digital input. Can you tell me how to find it?


Thank you.

[oon_the_kid]

Hi CAC,

Sorry can't read chinese. Where did u get these? Is there a kit or full unit available?

Oon

[panda360]

Originally posted by oon_the_kid
Hi CAC,

Sorry can't read chinese. Where did u get these? Is there a kit or full unit available?

Oon

I think it is demo PCB. I use Google translate.(See below). Hoped that you can understand.



http://translate.google.com/translat...istory_state0=

[wwenze]

I can read Chinese, if you need any help in translation. Coz the Google translate doesn't work.

´Ë°åΪÁùÉùµÀÈ«Êý×Ö¹¦·Å°å¡£ÊÇÏÖʱ×îÐµĹ¦·Å¼¼Êõ¡£²» ÐèÒªÁíÍâʹÓÃDAת»»¡£Ö±½Ó°ÑCD»úDVD»ú»òUSBÉù¿¨µÄI2SÊ ý×ÖÐźÅת»»Îª¹¦ÂÊÖ±½ÓÇý¶¯À®°È¡£ÒôÖʲ»ÊÇÒ»°ãµÄDÀà»ò ABÀàËùÄܱȵġ£´Ë°åÊÇÓÉÈý¿éDDX2100£¨ÔÚÂÁÉ¢ÈÈƬµÄÏÂà 棩ºÍÒ»¿éDDX8001¹¹³ÉµÄÊý×Ö¹¦·Å.¹¦ÂÊΪ6*50W.Ò²¿É×Ô¼ º¸Ä×°³É3*100WʹÓÃ.µçÔ´²ÉÓÃ32VºÍ5VÁ½×éµçÔ´¹©µç.¹¦·Å °åÈ«ÐÂ.µ«ÊÇҪעÒâµÄÊÇ£¬´Ë°å²»ÄÜÖ±½ÓʹÓÃ.ÐèÒª×ÔÒѶ¯ ÊÖÁª½ÓµçÔ´ÓëÊý×Ö½Ó¿Ú¡£ÎÒ×ÔÒѵÄÒѸãÏ죬ʹÓùâÏËÊäÈë £¬51µ¥Æ¬»ú¿ØÖÆÔö¼ÓÁËÒ»¿éLCDÒº¾§ÆÁ£¬Æ߸ö°´¼ü£¬Ò»¸ö3 60¶ÈµÄÒôÁ¿µ÷½Ú¡££¬¿ÉÒÔÌṩһ¶¨µÄ¼¼ÊõÖ§³Ö¡£J3½Ó¿ÚÉÏ ±êµÄ¶¨ÒåÒÀ´ÎΪ£ºMUTE_HP MU2100 GND SCL SDA RST MCK LRCK BCK SDA2 SDA1 SDA0 GND¡£Á½¿éÒÔÄÚ¿ìµÝ·Ñ£±£µ£®£°£°Ôª

This board is a 6-channel fully-digital amplifier board. The newest form of amplifier technology (yeah rite). DA conversion not required. Converts the I2S digital signal from CD DVD or USB sound card into power to directly drive speakers. The sound quality is far better than a typical class-D or class-AB amplifier (yeah rite again). This board is a digital amplifier consisting of three DDX2100 (underneath the heatsink) and one DDX8001, output power 6 x 50W, can be modded to 3 x 100W (bridgable class-D? interesting). Power supply is 32V and 5V. Boards are all new, but take note, this board cannot be used on its own, need to connect the power supply and digital signal input yourself. I've done up my own using optical in, 51 cd player control with an additional LCD display, 7 buttons, a 360-degree volume control., can provide some technical support. J3 connector pinout as: MUTE_HP MU2100 GND SCL SDA RST MCK LRCK BCK SDA2 SDA1 SDA0 GND. Courier @ $15 for two pieces and below.

[hoka]

I want one of these but how do you buy on that site?