Forum upgraded to SMF 2.1.2!
Started by bluesky6, April 06, 2014, 04:52:47 PM
Quote from: ehsan_zt on March 24, 2016, 04:32:50 PMIt's little confusing, does paralleling a 1M resistor to R7 has any effect or not ? (reducing gain when we are in overdrive channel)
Quote from: ehsan_zt on March 24, 2016, 04:32:50 PMPot labeles on my amp are: B104 for gain,ALPHA B50Kohm for treble, A50Kohm for bass and ALPHA B50Kohm for volume. I think I need a log taper for volume,and since I can not find any log pots where I live, can I swap bass pot with volume pot ? (won't there be any problems with bass ? )
Quote from: ehsan_zt on March 24, 2016, 04:32:50 PMShould I use anti log pot for gain ? if so,how can I change a linear pot to anti log ?
Quote from: j_flanders on January 30, 2018, 05:41:43 AMHere's the correct schematic by the way.
Quote from: blackcorvo on January 27, 2018, 03:15:10 PMSo, what these mods have done for me:- Changed C6 from 220n to 470n to up the bass response a bit
Quote from: blackcorvo on January 27, 2018, 03:15:10 PMRemoved the Red LEDs from the board and placed 2x White LEDs soldered directly onto R7, for a less harsh distortion even on "clean";
Quote from: ehsan_zt on March 05, 2018, 02:39:23 PM2- Another interesting thing I found out was this video:https://www.youtube.com/watch?v=rRAv76ylAcIwhat this guy did is he simply removed C12 2A274K!I tried this,and it's AMAZING ! when you remove C12, amp will sound clearer and there is an increase in volume. I really suggest trying this and removing it or replacing it with something lower (like 2A272K).I'd love to know the science behind it,if some one can explain?!
Quote from: blackcorvo on January 30, 2018, 07:32:05 AMj_flanders, I have only a crude understanding on filters, but in my simple terms, what I see with C5 is a high-pass filter, not a coupling capacitor.The difference lies in the resistor (potentiometer in this case) in parallel with the capacitor, as it "leaks" the frequencies that can't get throught C5. What I did by changing C6 was allow more of these lower frequencies throught to the next stage.