gres
Full Member level 4
Assumptions:
Stereo amplifier with good bass but with possibility to quite good play in rest of range.
I decided to use double bridge TDA7294. Power amps is dual-mono construction, close in one casing.
System start with two soft starts for two toroidal transformers (2x24V-300W). then large bridges and condensers (summary 20, 4700mF each, 50V) so amplifier could handle. Next power amps and preamplifier (everything simple, preamplifier – double TL072). Secure system against direct current and crashes. Only top cover is missing.
How it plays?
Exquisitely! First time I plugged it to some shit columns, but sound still was good. To bo honest vacuum tube amplifier with the same columns was a little bit better. Now I have jamos718 speaker columns, of course they are not perfect, but much better than crative 5300.
Only one problem- with loud sound level, middletones falls into distortion – knocking and cracking noise, only middle tones!!. Columns are not put to the limit to I don’t know what is it. I don’t know if the problem is with columns or amplifier. I tried some changes but without succeed. Problem appear only with high volume.
Pictures quality is not amazing – I know that, it is because I made them by cell phone. As I said project is not finished – without top casing.
Original text comes from https://www.elektroda.pl/rtvforum/topic1427897.html
