Hi,
my Aleph-X is finished, here some pictures before all wires were connected and the lit closed...
One question; with the old Aleph the blue led is connected over the active current source. However the Aleph-X has two of them, how do you connect the led to get superior sound quality without getting the source out of balance ?
For the statistics see a previous thread!
Bye,
Edwin
my Aleph-X is finished, here some pictures before all wires were connected and the lit closed...
One question; with the old Aleph the blue led is connected over the active current source. However the Aleph-X has two of them, how do you connect the led to get superior sound quality without getting the source out of balance ?
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
For the statistics see a previous thread!
Bye,
Edwin
stay away from those blue LEDs! they totaly kill the sound! If you want the real sound - use a 6E5 tube instead! It can also show you the accuracy of sound the amp produces at the moment - a great control instruments.
Edwin Dorre said:One question; with the old Aleph the blue led is connected over the active current source. However the Aleph-X has two of them, how do you connect the led to get superior sound quality without getting the source out of balance ?
Hi Edwin
Good to see you're back with your fine-looking amp.😎
I see some people warn you not to implement a led.
They could be right, they could be wrong.
Anyway, here's a nice thread with a lot of possible ways to connect a LED: http://www.diyaudio.com/forums/showthread.php?s=&threadid=5844
Are you still happy with the sound?
And get rid of the DC?
Greetings
/Hugo 🙂
LED Connection
I have gone to the simpler is better school. In my circuits I run a blue LED from each + and - rail. The LED's used are 3.5 volt and are plenty bright a 10ma.
The value resistor needed to drop each rail to 10ma is added at each end of the diode. This way there are 4 resistors used to connect two diodes. The resistors sghould help buffer the noise from the diode.
Placing one across the current source looks great, but this can add noise. The wire wrapped around the transformer looked good to me also. Then looking at my Plitron's it was more trouble than it is worth. A diode circuit and all.
BTW, Great looking amp.
George
I have gone to the simpler is better school. In my circuits I run a blue LED from each + and - rail. The LED's used are 3.5 volt and are plenty bright a 10ma.
The value resistor needed to drop each rail to 10ma is added at each end of the diode. This way there are 4 resistors used to connect two diodes. The resistors sghould help buffer the noise from the diode.
Placing one across the current source looks great, but this can add noise. The wire wrapped around the transformer looked good to me also. Then looking at my Plitron's it was more trouble than it is worth. A diode circuit and all.
BTW, Great looking amp.
George
Hi Edwin,
if you need blue led, run it from 110V/230V. You need only some parts to do that....
😱
Reinhard
if you need blue led, run it from 110V/230V. You need only some parts to do that....
😱
Reinhard
LEDTest
Why not perform a simple test:
Connect a scope at the output and look at the result with and without the LED.
This should give us an idea of the added noise.
/Hugo - will try it one of these days. 😉
Why not perform a simple test:
Connect a scope at the output and look at the result with and without the LED.
This should give us an idea of the added noise.
/Hugo - will try it one of these days. 😉
Bricolo said:
The amp itself isn't a very low noise amp.
I prefer UV LED's Nice invisible light.
BTW: Do they emitt any visible light?
BTW 2: Very nice looking amp!
Hi,
thanks for all the postings... However I was only kidding about the led's !!! It was a funny way to show off my new amp pictures!!!
I just connected the blue led to one of the current sources (I do not here any audiable difference) (one led per channel)...
Edwin
thanks for all the postings... However I was only kidding about the led's !!! It was a funny way to show off my new amp pictures!!!
I just connected the blue led to one of the current sources (I do not here any audiable difference) (one led per channel)...
Edwin
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