|
Post by oohms on Oct 5, 2010 13:58:49 GMT
Another amp i designed in my spare time (which i have a lot more of lately : I wanted to avoid opamps, and global feedback, keeping it as simple as i could. It sounds really fantastic and clear, especially the treble. Very transparent. Its only flaw sound wise is that it doesn't have quite as much 'slam' as some other amps I'll be doing some RMAA tests later, to see how it performs The power supply filter is 1.6 ohms with 4400uF worth of capacitors, running off a 24v switchmode power supply (The one from my bravo V2)
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Oct 5, 2010 14:50:15 GMT
You might be able to omit Q2 and R5 and connect R10 to C/Q1 directly I see no reason why this shouldn't work, maybe the bandwith will be slightly smaller. TIP: try changing Q1 (and Q2 if you like to hold on to it) for a BC550 and maybe increase C3 to 1000 or 2200uF ? About 12k input resistance may be a bit low when you want to use a vol pot of 20k to 50k 4 times gain is very good for most applications... a textbook local feedback voltage amplifier design with G2 output stage. Any noises/ripples on the PS rail will be amplified 3 times with this design though... This amp will certainly have a bigger bandwith then the one I am currently experimenting with.
|
|