TheLaw
100+ Head-Fier
- Joined
- Sep 19, 2010
- Posts
- 193
- Likes
- 10
Hello,
I'm working on a non headphone amp. A fairly enormous LM3886 x 2 + LM4780 which will make a 200W+ 2.1 setup for my computer. One of the preamplifier boards is going to use a +/- 6V transformer (effective 12V)...More on that in a second.
My front panel headphone jack on my computer just recently went kaput, and I do not know why, nor do I feel like replacing something like that at the moment.
So I thought I I'd integrate a cMoy right into the amp itself, since it will be sitting right on my computer desk..I'll use a 4PDT switch to switch the RCA inputs to either the power amp or the headphone amp. Should work right?
Op amps are supposed to be run of split supplies, but for the portable versions, we cheat and split the rails of a single supply.
So I was just going to build Tagent's pocket cMoy schematic like everyone else in the world, but what do I remove from the schematic? The two electrolytic buffer caps? Anything else?
Truth be told, I've never built anything with an op-amp, besides single supply cMoys, so I'm not sure which pins get what. (Where does 6V go? 0? 6V?
I'm going to use a OPA2134 I believe.
Thanks!
I'm working on a non headphone amp. A fairly enormous LM3886 x 2 + LM4780 which will make a 200W+ 2.1 setup for my computer. One of the preamplifier boards is going to use a +/- 6V transformer (effective 12V)...More on that in a second.
My front panel headphone jack on my computer just recently went kaput, and I do not know why, nor do I feel like replacing something like that at the moment.
So I thought I I'd integrate a cMoy right into the amp itself, since it will be sitting right on my computer desk..I'll use a 4PDT switch to switch the RCA inputs to either the power amp or the headphone amp. Should work right?
Op amps are supposed to be run of split supplies, but for the portable versions, we cheat and split the rails of a single supply.
So I was just going to build Tagent's pocket cMoy schematic like everyone else in the world, but what do I remove from the schematic? The two electrolytic buffer caps? Anything else?
Truth be told, I've never built anything with an op-amp, besides single supply cMoys, so I'm not sure which pins get what. (Where does 6V go? 0? 6V?
I'm going to use a OPA2134 I believe.
Thanks!