Thomo said:
Hi Lee,
You are not repeating anything, i don't much abt electronics.
Where do u suggest i connect the regs to, is there something like a testing board...?
or should i take a wire to tap on some power on somewhere on the cdp board? can u suggest some points for me to use to test?
This may sound a little crazy as I try to drive my headphones (600ohms) directly from the cdp, but hey it works and in fact much much more impressive then my head amp.
As mentioned by many before, the lm4562 really made the music very natural and smooth. I have yet to try out my favourite track (which i think is rather challenging, Dacoit Duel, not sure if anyone have heard of it before)
As mentioned by many before, the lm4562 really made the music very natural and smooth. I have yet to try out my favourite track (which i think is rather challenging, Dacoit Duel, not sure if anyone have heard of it before)
marcusdeming said:
Not crazy in the slightest Marcus! As long as they're an easy load (and 600ohms is) the op-amp can take it. And if there's less in the signal path the sound will be less grainy and more fluid with better detailing.
The 4562 is a pretty good chip when used with the right accompanying parts/gear.
Simon
SimontY said:
I am not sure why but the last time my 32ohm headphones don't sound very good with the lm4562
I think u mentioned a volume control sometime back how can i fixed one in. Now that i am liking its sound its quite silly for me to use the remote to control the volume as the cdp is right underneadth my table.
i can wire a pot, but just wonder how i should fit them.
I figured that it would be some what weird looking to have it on the switch box. maybe in a seperate enclosure, just the jack to pot to socket. and the headphone coming in here.
Can anyone give me a hand on testing the output for the regs.
I figured that it would be some what weird looking to have it on the switch box. maybe in a seperate enclosure, just the jack to pot to socket. and the headphone coming in here.
Can anyone give me a hand on testing the output for the regs.
I've been having a lot of trouble loading this site today!
You can run a wire from the negative supply on the pcb, ie the negative connection of C804 to the input of your lm337 reg. Connect your regs ground to a ground point on the pcb. Measure the voltage between the regs output and ground.
A little o/t but I was given this article by a mate and thought some people might want to read it. I notice the guy hadn't actually listened to his KI BEFORE the mods!
http://img526.imageshack.us/my.php?image=kidplettervo4.jpg
Lee
You can run a wire from the negative supply on the pcb, ie the negative connection of C804 to the input of your lm337 reg. Connect your regs ground to a ground point on the pcb. Measure the voltage between the regs output and ground.
A little o/t but I was given this article by a mate and thought some people might want to read it. I notice the guy hadn't actually listened to his KI BEFORE the mods!
http://img526.imageshack.us/my.php?image=kidplettervo4.jpg
Lee
SimontY said:
I guess audio really involves a lot of subjectivity. To be honest, I do not like the lm4562 initially when i first begin my mods. And went on to use the ad826 which i still quite like it. But changing the lm4562 recently i find them amazing again.
Using it to drive my cans directly i have been on them for 4-5 hours...
marcusdeming said:
I guess audio really involves a lot of subjectivity. To be honest, I do not like the lm4562 initially when i first begin my mods. And went on to use the ad826 which i still quite like it. But changing the lm4562 recently i find them amazing again.
There's plenty of subjectivity, but a total lack of detail and openness is more of an objective problem. The original KI sounded rubbish to me - but that's subjective!
Just don't have your face too close. Other than getting blasted in the eyes there isn't much that can happen. It's a good idea to have your supply to the regs fused. Another tip would be to set it all up and then switch the power on from a distance. Sometimes I like to crouch down and shield my face too 
Also, when you do switch on, switch off quite quickly and check for any parts heating up with your hand. If all is ok and smoke-free turn on again and check for voltage with your meter.
Also, when you do switch on, switch off quite quickly and check for any parts heating up with your hand. If all is ok and smoke-free turn on again and check for voltage with your meter.
SimontY said:Just don't have your face too close. Other than getting blasted in the eyes there isn't much that can happen. It's a good idea to have your supply to the regs fused. Another tip would be to set it all up and then switch the power on from a distance. Sometimes I like to crouch down and shield my face too
Also, when you do switch on, switch off quite quickly and check for any parts heating up with your hand. If all is ok and smoke-free turn on again and check for voltage with your meter.
do i need to solder a wire to the end of the reg.
I am certainly very worried about the testing part
What are the value of the fuse in the cd63, just in case i burn some.
lol, why would you want to do that?
It won't kill you but the metal back is probably at +ve (the datasheet will tell you), so it can't be recommended.
If you need to you can have it lying on a piece of paper or something with the wires trailing away from it to ground, output (just a loose wire - don't connect it yet), and input voltage. This will make it as easy as possible to test for correct voltages without damaging anything.
Simon
It won't kill you but the metal back is probably at +ve (the datasheet will tell you), so it can't be recommended.
If you need to you can have it lying on a piece of paper or something with the wires trailing away from it to ground, output (just a loose wire - don't connect it yet), and input voltage. This will make it as easy as possible to test for correct voltages without damaging anything.
Simon