ajazz []
diyAudio Member
Offline
Registered: Apr 2005
Location: Nasik, Maharashtra, INDIA
IRAUDAMP boosted to 1KW in 8 Ohms Post #1
Hi Buddies,
I am absolutely a new member in our forum, so please excuse me of any stupid ignorance of our rules.
I have made a duplicate of Iraudamp with slight changes and boosted the output to almost 1KW in 8 Ohms. (for the interested I shall post the schematics & pics 2mrw).
It works directly on AC Mains of 230V converted directly to DC 320V charging 10,000uf / 200V Caps in series (centre tap) with soft start ofcourse and using IXYS Mosfets of 600V-48A.
It works like a Bomb taking the **** out of any speaker in the world. I used Eminence pro 1KW speakers but it couldn,t bear the abuse. (I limited the output modulation to 80%)
Now I have to discuss a small problem ?
It works fine right from 10Hz to 2Khz and then the frequency starts dropping to almost 10% output at 20Khz. I don't know if some part of the circuit is getting saturated on higher frequencies or something else. I tried tweaking around with output filters, feedback pole caps etc but in vain.
Can any of our Guru,s solve my problem.
regards
Ajazz Bukhari.
