Incredible quality amplifier by Graham, prepare your ears for it

[mod_evil]

Carlos,

How I speak to you in mine email. When I have results with GRAHM Schematics I will post in here.

In now, i'm designing the Power Supply. The power amplifier will be the last part of the Integrated.

;-)

Thanks,
Felipe

 

[eaoyama]

back with news....

this is my pcb in dual layer

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.

 

[eaoyama]

more picts

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.

look at the choke.... its a 2.5H w 0.25A........ n i put a resistor to limit the current...

ill post my impress later...

cya!!!

 

[destroyer X]

Very good Edgar..... or Eddie....you are finishing the Graham's last design.

Mod_evil is preparing to construct this model i am doing now.

I have assembled...only the output and adjustments to fire the unit.

But i will wait, as i cannot waste too much time those days...when the day arrive, many amplifiers will born alike son of turtle....many at same time.

I am showing you the image of the assemblage....the Voltage amplifier transistor will be substituted, this one is a Television set transistor that has low capacitance...but i do not like the gain.

Well.... i will continue near future.

Now.... i will let you will Eddie and Mod_evil.

regards,

Carlos

 

[destroyer X]

Another image....amplifier not completed for a while.

Need check up...output and drivers...heatsink and insulators...bias adjustment and FIRE!

regards,

Carlos

 

[mod_evil]

This is very good!

How this loud? Can I use this schematic with UNIT GAIN?

Thanks,
Felipe

 

[eaoyama]

sure u can but let my sign on pcb....

 

[destroyer X]

Eddie...here is Graham's suggestion to you

This is a buffer.... and will be very good working together GEM

No!...it is not a low distortion unit....it has nice distortions...the one we like (humans)

Cyborgs will not apreciate.

regards,

Carlos

 

[destroyer X]

The buffer...one more detail

Attached.

Carlos

 

[destroyer X]

Very low distortion amplifiers normally sounds poor...alike food without salt

Symassym is some exception that made me "eat my tongue"

But there are many others that motivates me to continue to believe that distortions use to be a nice condiment to audio...they give the taste...the personality.

Last inform about the buffer.

regards,

Carlos

 

[mod_evil]

Carlos,

I like to use a Grahm to buffer, because with one resistor I can put gain in this.

xD

Thanks for this schematic,
Felipe

=]

 

[diegot]

Felipe, where I cand find schematcs from Graham like the one that you post?

 

[mod_evil]

Diego,

You can see many schematics from GRAHM in this post.

I found that schematic in here, on this post.

=]]

Best Regards.

 

[diegot]

Thanks Felipe.
That schematic it's interesting because the use of only two NPN output devices, as I have a lot of good units here, it would be a interesting design for a cheap amplifer. But, as Graham publish a lot a designs, maybe there is a newer version of that schematic, that's because I asked you.

Regards.

 

[destroyer X]

I will show you some...and there are hundreds more if you wanna know

Here is one of them.

regards,

Carlos

 

[destroyer X]

If you want more...here is another one

Attached.

regards,

Carlos

 

[destroyer X]

I have found this one too.

Graham is a "schematic factory"...and the interesting is that you assemble and after some adjustments....the unit works and fine!

Some of them sound very good.... some of them reach the top heaven.

regards,

Carlos

 

[destroyer X]

Here is another one..sorry if someone was repeated.

There are units with sligth modifications...others are entirelly different.

I am proud to have Graham as a friend...very proud of that....because i think he is nothing less than a gênius.

regards,

Carlos

 

[destroyer X]

Graham do not have too much time to spend anymore...and his mood is a little bit

"fluctuating" in my personal point of view.

But he is a lovely guy...not perfect of course...i am not perfect too.

regards,

Carlos

 

[destroyer X]

Of course, and gladly, i can try to put interested guys in direct contact with Graham

But i cannot guarantee how big will be his attention, as he is too much busy those last monthes.

regards,

Carlos