John Stimson Wrote: > It won't, but tied together like they are, the "averaging" resistors and > the highpass filter interact with each other. The main effect is that > the 21.5k resistor cuts your gain by more than half. DC isn't a big > deal going through a single buffer stage. The power amp for the sub > probably has a DC blocker on its input. If you want to include a DC > filter, put in a second buffer amp. Okay, screw the DC blocker.
John Stimson Wrote: > You want to have the voltage supplies exceed the maximum signal you wish > to reproduce by about 2V. Otherwise, anything within the specified > range for the op-amp is fine. +/-9V is easy to achieve with batteries. > Which reminds me -- you will want some sort of power supply reservoir > capacitors between +V and ground and between -V and ground. Something > like a 100uF electrolytic capacitor in parallel with a 1uF film > capacitor should work for just one op-amp. My revised schematic is below. Did I understand what you recommended for the power supply reservoir? Two more questions: 1. I assume all of those grounds get tied together? 2. I've never used one before, but the little perforated project boards that you can buy at Radio Shack, etc. ... the ones with lots and lots of copper-edged holes... are you supposed to "connect the dots" to make connections by dragging solder across them? Or are you supposed to use bits of wire to make connections? +-------------------------------------------------------------------+ |Filename: schematic2.gif | |Download: http://forums.slimdevices.com/attachment.php?attachmentid=897| +-------------------------------------------------------------------+ -- jonheal Jon Heal says: Have a nice day! http://www.theheals.org/ ------------------------------------------------------------------------ jonheal's Profile: http://forums.slimdevices.com/member.php?userid=2133 View this thread: http://forums.slimdevices.com/showthread.php?t=20907 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
