Clarifications on what I have done: There are two separate sets of mods I have done to the SB2:
1. Outboard PS - I will get some pics up. I took them and I have to find them. I built a separate PS supply that is housed in project box and made up of: 1 Volex 12AWG captive cord with keeper 1 120/9.6VAC 3AMP EI core Hammond dual bobbin transformer 4 31DQ10 Ultra-fast soft recovery diodes (3A) in a full wave rectifier configuration 2 Panasonic 4700uF FC caps bypassed with 0.01uF Wima MKS2 film caps - these are the PS caps 1 LT1086ADJ regulator 2 Vishay/Dale Metal film 1% resistors at values of 3.65Kohm / 1.21Kohm to get 5v from the regulator The regulator 5v to ground is filtered by: 1 Panasonic FC 2200uF 1 Wima 2.2uF MK4 1 Siemens 0.01uF Stacked polyester This goes up through a solid core umbilical and is soldered directly to the SB2 (removed the old connector). I have no O-scope at the moment, so I cannot really measure HF behavior. It is rock solid at 5.12v at the SB2 where the umbilical connects. 2. Mod 2 is the replacement of the 14v power rail filter cap inside the SB2 (labeled "Big Ass Cap" by Sean Adams here - http://www.slimdevices.com/photos/inside_squeezebox2/) with a 3300uF Rubycon ZA bypassed with another Siemens 0.01uF stacked polyester. I also replaced the standard digital out RCA with a WBT Nextgen, though I will probably go with a BNC and Scientific Conversions Transformer in the next few weeks. I use my SB2 solely as a digital transport - I do listen to some internet radio, so I have decided to leave in the 12MHz oscillator. I have left the analog outputs intact as people do not indicate that it detracts from digital performance. This is really useful information. Keep it going. -- mamsterla ------------------------------------------------------------------------ mamsterla's Profile: http://forums.slimdevices.com/member.php?userid=469 View this thread: http://forums.slimdevices.com/showthread.php?t=19822 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
