6h5c said:Ok, i'll give it another go at National. Last time I tried they refused my sample request. It's been a while, so maybe they've become less strict.
Ray
probably because you wanted a truckload of them
Im sorting it out with my uni email address as i can't be bothered to pay the fee just for using a hotmail account.
YoungSC said:
Basically QN05...08 are the ones to remove to disable muting on the RCA output, and QN91/92 for the headphone circuit. If you do this both, you can also take out the driver transistors QN24/25 and two resistors that feed the muting lines (RN27/28). If you never use a headphone, you can disable the circuit by removing C901/902 and two wire links that provide +/- 12V to the circuit (U271/272).
By grounding the left-over traces you can lower the amount of interference radiated into the analog circuit. I used 100n ceramics because I use the muting lines to drive a muting relais, but you can use wire links directly to ground if you don't have that.
Regards,
Ray
Thankyou Gents,
I shall get into it tonight.
The improvements so far are great. I'm a bit of a song flicker at heart, but last night I found myself captivated listening to song after song and enjoying it all.
I've put building room treatments on hold to do this work, but hopefully in combination with the mods I'll end up with a really satisfying sound.
Simon (from Oz)
I shall get into it tonight.
The improvements so far are great. I'm a bit of a song flicker at heart, but last night I found myself captivated listening to song after song and enjoying it all.
I've put building room treatments on hold to do this work, but hopefully in combination with the mods I'll end up with a really satisfying sound.
Simon (from Oz)
! It's the ultimate solution for me. No clicks and pops during power-up, and the audiophile 'click' between the tracks is very sophisticated 
CD 53 SE mods
Dear All
I am doing some mods in my Marantz CD 53 and already removed the muting transistors.
I intend to remove the output caps but just mesaured 25 mv between them and ground.
I think that this value can be too high but I measured it with the CD playing.
Can it hurt my pre amp (Meridian 101) or is it safe to remove the caps.
Best Regards
Ricardo
Dear All
I am doing some mods in my Marantz CD 53 and already removed the muting transistors.
I intend to remove the output caps but just mesaured 25 mv between them and ground.
I think that this value can be too high but I measured it with the CD playing.
Can it hurt my pre amp (Meridian 101) or is it safe to remove the caps.
Best Regards
Ricardo
SimontY said:"Due to the large demand for LM4562NA samples, we now have to require a small shipping and handling fee."
Fee: $12.24
Bummer! But if it's really good... it could replace the LM6172 in my preamp
I've ordered mine
Simon
Yep ! The extra cost is a bit of a nuisence but , hey, under $3 per chip !!!
I received mine yesterday morning. I've just got to find time to try them out!
Andy
