linux-works
DIY: and then there were two ;)
the preamp (left) and its little brother, the subwoofer controller. new to the line-up (or should I say line-out) ;)
what's new, here, is that I built another relay attenuator but this time I picked 0.1dB spacing for the step size. using all 8 relays (bits) that would get me 0.255 as a count or 0 thru 25.5 dB attenuation. the subwoofer already has a level control on it (powered sub) and so you 'get it close' with the sub-mounted control and do the fine tuning with this lcd/IR unit. with .1dB steps, that's a very fine level of granularity.
to see the R values I picked, visit my online CGI calculator:
www.amb.org/audio/delta1/r2r.cgi
use 8 bits, .1db and 5000 as the Z value and you'll see the R's that are installed on my board.
DIY: and then there were two ;)
the preamp (left) and its little brother, the subwoofer controller. new to the line-up (or should I say line-out) ;)
what's new, here, is that I built another relay attenuator but this time I picked 0.1dB spacing for the step size. using all 8 relays (bits) that would get me 0.255 as a count or 0 thru 25.5 dB attenuation. the subwoofer already has a level control on it (powered sub) and so you 'get it close' with the sub-mounted control and do the fine tuning with this lcd/IR unit. with .1dB steps, that's a very fine level of granularity.
to see the R values I picked, visit my online CGI calculator:
www.amb.org/audio/delta1/r2r.cgi
use 8 bits, .1db and 5000 as the Z value and you'll see the R's that are installed on my board.