Sorry I'm french, so I don't know any sound-like for this state of mind : I want to finish to build my Aleph 3 ! ! !
All my consideration and congratulation to Mad_k for manage his amp.
It's a little victory for each amp finished. Go ahead all ! !
All my consideration and congratulation to Mad_k for manage his amp.
It's a little victory for each amp finished. Go ahead all ! !
Well done!
The more the merrier!
However I have a question about the grounding arrangement. I thought the best way is to star ground the board and speakers to the 0 point between the caps and then to the chassis. Have you done it differently?
The more the merrier!
However I have a question about the grounding arrangement. I thought the best way is to star ground the board and speakers to the 0 point between the caps and then to the chassis. Have you done it differently?
if you look closely, you can see the star ground point behind the main board on the back plate. all grounds connect here. this piont is also connected to AC GND with a thermistor.
Good job I must say!!
Which fets did you use?
They seem TO-220 types, not TO-247 like IRFPs usually found in other Alephs.
BTW which Aleph is this? 30 or 5?
Hi
Andypairo
😀
Which fets did you use?
They seem TO-220 types, not TO-247 like IRFPs usually found in other Alephs.
BTW which Aleph is this? 30 or 5?
Hi
Andypairo
😀
This is an Aleph 30 with some modifications to suit the parts at hand, and my wallet..
The output fets are irf540, and the input + CCS are irf9510.
The output fets are irf540, and the input + CCS are irf9510.
You mean measured or heard?
With 2 - 2.5 amps current draw there should be a ripple of about .5V on your rails...
Hi
Andypairo
measurments?
No, it is from what I can hear with my ear against the speaker (~87dB sens.).
I can also tell you that there is a big difference in this "heard" ripple (along with the other aspects of the sound) with various types of caps.
I my SOZ I have experimented with this, and come to the conclusion that quantity (of uF) cannot substitute for quality.
As to the very small amount of hum (from the woofer), I think it comes from the 20mV DC-offset on the outputs...
No, it is from what I can hear with my ear against the speaker (~87dB sens.).
I can also tell you that there is a big difference in this "heard" ripple (along with the other aspects of the sound) with various types of caps.
I my SOZ I have experimented with this, and come to the conclusion that quantity (of uF) cannot substitute for quality.
As to the very small amount of hum (from the woofer), I think it comes from the 20mV DC-offset on the outputs...
BUT THE SOUND MAN; SOUND!!!
I cannot believe how good this amp sounds!!
Why hasn't anyone said this before?
Why doesn't everyone buy Pass's amps?
Is it just me?
Am I going insane?
-I guess the answers give themselves, but I just wanted to say it
For me, this is just like a dream come true. I have had dozens of amps, but nothing even comes close to this one.
Complete resolution from top to bottom. A firm, massive bassline. A large, airy and deep soundstage. Vocalists are IN the living room. The timbre of any instrument is real. Nothing gets in the way of anything else. The amp dishes out anything I throw at it. A real sense of POWER.
I could go on all night...
Just wanted to let you know how it sounds.
BTW -I listen to a very broad range of music, so it is very important for me that my setup can manage all kinds of music, and doesn't favour any particular form too much...
Also: DMB are the best!!
Peace, and thanks for the kind words folks.
😛
I cannot believe how good this amp sounds!!
Why hasn't anyone said this before?
Why doesn't everyone buy Pass's amps?
Is it just me?
Am I going insane?
-I guess the answers give themselves, but I just wanted to say it
For me, this is just like a dream come true. I have had dozens of amps, but nothing even comes close to this one.
Complete resolution from top to bottom. A firm, massive bassline. A large, airy and deep soundstage. Vocalists are IN the living room. The timbre of any instrument is real. Nothing gets in the way of anything else. The amp dishes out anything I throw at it. A real sense of POWER.
I could go on all night...
Just wanted to let you know how it sounds.
BTW -I listen to a very broad range of music, so it is very important for me that my setup can manage all kinds of music, and doesn't favour any particular form too much...
Also: DMB are the best!!
Peace, and thanks for the kind words folks.
😛
Så det er flere i Norge som bygger Passlabs forsterkere....
Very Nice amplifier.. Where did you buy the heatsinks ?
>Per Olav
Very Nice amplifier.. Where did you buy the heatsinks ?
>Per Olav
Mads,
What exactly do you think you are trying to do here? I am IN THE PROCESS of building my A30 and now thanks to you I am just dying to get it ready. I can hardly wait and will have to go home straight from work and continue the building. All night.
Seriously, nice work and congrats on the results which you seem to be very happy with.
/UrSv, Joining the merry crowd soon
What exactly do you think you are trying to do here? I am IN THE PROCESS of building my A30 and now thanks to you I am just dying to get it ready. I can hardly wait and will have to go home straight from work and continue the building. All night.
Seriously, nice work and congrats on the results which you seem to be very happy with.
/UrSv, Joining the merry crowd soon
Jada, her er det fabrikk....
Per Olav;
I bought the heatsinks (and most of the other parts) from http://www.elfa.se/no/. The sink is a KS160 1000mm (160*40*1000mm), wich I got cut into 4 160*40*250mm at a local metalworkshop.
UrSv;
Thrust me, I know the feeling. But the trick is to hurry slowly, or else it might not be any fun at all. Also, no shortcuts, because they'll bother you till you can't sleep all night, and you have to do it all over again. Like I see it, this is an amp I can easily live with for a good long time. (That is, until I am finished with the revision of everything else, and the whole prosess starts all over again.)
-> Bigger, Better, Smarter, Faster, Heavier etc. etc. It all depends on the money I guess. This one is done a little on the cheap side, but I WILL NOT cheap out on the things that matter sound-wise.
Now, on for some more BZLS mods.. (Now I can really hear the differences in cables, spikes and what have you (fairy-dust and snakeoil)).
Per Olav;
I bought the heatsinks (and most of the other parts) from http://www.elfa.se/no/. The sink is a KS160 1000mm (160*40*1000mm), wich I got cut into 4 160*40*250mm at a local metalworkshop.
UrSv;
Thrust me, I know the feeling. But the trick is to hurry slowly, or else it might not be any fun at all. Also, no shortcuts, because they'll bother you till you can't sleep all night, and you have to do it all over again. Like I see it, this is an amp I can easily live with for a good long time. (That is, until I am finished with the revision of everything else, and the whole prosess starts all over again.)
-> Bigger, Better, Smarter, Faster, Heavier etc. etc. It all depends on the money I guess. This one is done a little on the cheap side, but I WILL NOT cheap out on the things that matter sound-wise.
Now, on for some more BZLS mods.. (Now I can really hear the differences in cables, spikes and what have you (fairy-dust and snakeoil)).
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