What is exactly the problem?
Printable View
What is exactly the problem?
Hi Stan,
At the right side on the PCB of Leo a capacitor is missing.
http://theartofsound.net/forum/attac...1&d=1262726919
The PCB of Leo
http://theartofsound.net/forum/attac...1&d=1262726924
The same area of PCB on 7520
Is it a mod or something else?
Removing the cap with give a slightly warmer sound.
Thanks for the info, Stan.
Its gone a bit quite lately. Any new op-amps you have tried? :scratch:
I had a play with different opamps again recently..
swapped back in the LM4562 to replace the 2132 I had been using?
This is with NO opamp in the headamp circuit mind..
The 4562 was "clearer" but didn't approach the level of foot tapping involvement of the 2132.
its just...better in my system.
That said, isolating the Dacs case from vibration made a BIGGER improvement than swapping over the opamps, so go figure?
I forgot to mention I stuck a piece of aluminised tape to the underside of the 7520 cover. I couldn't tell you if its made any difference as I have done so many minor mods lately.
Ive dampened the inside upper case and the underside of the lower case, makes the Dac feel a lot more heavy and solid.
Also I've blu-taked it to a couple of the wee Tesco granite slabs, which are in turn blu-taked together.
So basically the combined weight of the granite is coupled to the heavier "dead" case of the Dac - which made a good difference in my equipment rack.
Kind of like putting the Dac components in a heavier better damped case maybe?
And Stan says such things wouldn't make a difference... ;)
Marco.
What you need is a lead-lined hardwood box suspended on special hi-tensile wires connected to the ceiling. Not sure if it will make it sound better but would be a talking point when you have the relatives round!
Regards
Chris