Headamp Gilmore Lite w/ DPS Modding
Jul 11, 2008 at 2:55 PM Post #46 of 62
Quote:

Originally Posted by donunus /img/forum/go_quote.gif
Actually, I'm asking Victorio to build me a 220 volt power supply as an alternate to the 110 volt dps that I have. I'll report on the sound in the amp section when I get it.


Will it use a tube regulator as recommended in his first post here?
 
Jul 11, 2008 at 3:18 PM Post #47 of 62
Quote:

Originally Posted by indikator /img/forum/go_quote.gif
chill guys chill, down to earth will bring you more friends and wisdom
smily_headphones1.gif



Friends are over-rated
wink.gif


Quote:

so is blackgate a no no for PS? what spot do guys recommend it for?


In the signal path? Sure, go nuts!
In a power supply? I'm sure it is good for that warm fuzzy feeling.....

Quote:

ps. from what I've learned, if you are not happy with a design then move up to better one, save the premium parts for the ultimate design
biggrin.gif


Yeah, I really believe that you get severely diminished returns from pimping up a cheaper design, versus going something bigger and better in the first place. Not that the G-Lite is a cheap design anyway..... I believe it is a very smart design because it doesn't need expensive boutique parts to sound good - just good transistor matching.
 
Jul 11, 2008 at 5:30 PM Post #48 of 62
Quote:

Originally Posted by Victorio /img/forum/go_quote.gif
Ok, OK last post (I just couldnt stand it). Wahahaha. I'd really be embarrased
to post those pictures If I were you. wahahaha. Grounding your AC filter to your mains is ridiculous. WAHAHAHA. What an idiot. No offense pls. but wahaha, I just cant help it. You shouldnt even be in this sight trying to give advice with your pathetic skills. LOL. This is hilarous. ROTFLOL! WAHAHA. Sorry cant help it. Your dangerous to the guys you give advice to. One word short.

Ok, just wanted to let you know that my coupling cap can buy your whole system. Yes 2 capacitors. So dont show me ****. wahahaha. My speakers probably is more than your trailer park home. wahahaha.
Sorry but I was nice on my 1st couple of post until you the idiot had to act up. I even wanted Peace. But no, I had to be drunk by saying that BG caps are good. LOL

Tahtah.



Hummm, 8 posts and so much to say....

Where'd you come from? Who are you?

USG
 
Jul 11, 2008 at 9:56 PM Post #49 of 62
Quote:

Originally Posted by Victorio /img/forum/go_quote.gif
Ok, OK last post (I just couldnt stand it). Wahahaha. I'd really be embarrased
to post those pictures If I were you. wahahaha. Grounding your AC filter to your mains is ridiculous. WAHAHAHA. What an idiot. No offense pls. but wahaha, I just cant help it. You shouldnt even be in this sight trying to give advice with your pathetic skills. LOL. This is hilarous. ROTFLOL! WAHAHA. Sorry cant help it. Your dangerous to the guys you give advice to. One word short.

Ok, just wanted to let you know that my coupling cap can buy your whole system. Yes 2 capacitors. So dont show me ****. wahahaha. My speakers probably is more than your trailer park home. wahahaha.
Sorry but I was nice on my 1st couple of post until you the idiot had to act up. I even wanted Peace. But no, I had to be drunk by saying that BG caps are good. LOL

Tahtah.


Give it up already - you're not fooling anybody.
 
Jul 11, 2008 at 11:05 PM Post #50 of 62
Quote:

Originally Posted by nikongod /img/forum/go_quote.gif
Will it use a tube regulator as recommended in his first post here?


Don't know for sure what he will use for the end product but hes only charging me a minimal cost. practically for parts cost only so its worth the try. Also, I'm in a 220volt country so another power supply for a good price will be a practical thing in addition to my 110 volt dps. I'm gonna try and see if it improves the glites sound much. If it doesnt, I will not lose a lot of money and be able to sell the glites with its dps untouched for good resale value.
 
Jul 11, 2008 at 11:30 PM Post #51 of 62
Quote:

Originally Posted by Pars /img/forum/go_quote.gif
Not really. As I indicated, there is not much difference in sound, mainly cleaner/more refined. That amp was built on a headamp V2 board, back when justin used to sell PCBs, so the PSU and everything is on the same board. I don't have any really high impedance cans like Senns (AKG K601s are the highest I use).


ok, i'm keeping that in mind.

refinement is pretty good on the glite already so if the power supply I'm gonna have made for it doesnt add much oomph at least I can't lose since it will be acting as a 220 volt transformer for me at the same time
biggrin.gif
and I can use my step down transformer for another audio system.
 
Jul 11, 2008 at 11:32 PM Post #52 of 62
According to the picture of the DPS board on the headamp site, the Amveco transformer used is a dual primary international transformer. You should be able to change a jumper and set it for 220V...

http://www.headamp.com/home_amps/lit...board_high.jpg

That said, the DPS does not appear to be the full blown Gilmore supply as I do not see the OPA548T opamps. THis looks like a std. LM317/LM337 supply.
 
Jul 11, 2008 at 11:35 PM Post #53 of 62
Quote:

Originally Posted by indikator /img/forum/go_quote.gif
ps. from what I've learned, if you are not happy with a design then move up to better one, save the premium parts for the ultimate design
biggrin.gif




Of course, in the end that is the best way to go about it but if i can experiment at a minimal cost for now, it can't really hurt.
wink.gif
 
Jul 11, 2008 at 11:39 PM Post #54 of 62
Quote:

Originally Posted by Pars /img/forum/go_quote.gif
According to the picture of the DPS board on the headamp site, the Amveco transformer used is a dual primary international transformer. You should be able to change a jumper and set it for 220V...

http://www.headamp.com/home_amps/lit...board_high.jpg

That said, the DPS does not appear to be the full blown Gilmore supply as I do not see the OPA548T opamps. THis looks like a std. LM317/LM337 supply.


wow, really? how would I go about doing that? I'm not that much into electronics but if it was just a jumper hmmm that would be easy if I didn't have to solder anything.
 
Jul 11, 2008 at 11:44 PM Post #55 of 62
You would need to contact Justin at headamp or if you have the manual including the DPS it might say so in there. It may not be set up as user configurable however, per this post. Pic shows the same int'l transformer though (see the 115V 115V on the top left side). The text says there are sep. versions for 115 and 220V.
 
Jul 13, 2008 at 10:31 AM Post #58 of 62
Quote:

Originally Posted by Victorio /img/forum/go_quote.gif
Beefy,
Yes, P.S is a BIG factor. OH man, its really hard to explain to someone that knows nothing about electronics. But "thinks" he knows. Scary...
Question Beefy, have you ever held a solder?

...

But Ok, ill try my best to explain in lamens term. Your signal looks for power especially on transients. That's why you want a Stiff PS to provide the proper swing. Weak PS wont have steady voltage to provide for demand. The Caps in the power supply is where it stores the energy/power/voltage reserves. To throw out once the signal asks for it. So you need CLEAN reserves per se. And yes ITS definitely a factor and anyone that's says it doesnt. Doesnt know anything. Just like you
smily_headphones1.gif


Sorry to rag on your incompetency but dont talk when you dont know anything
smily_headphones1.gif
Why dont you listen to the others and you might improve your setup rather than just complain.


It's a rather poor explanation about why the blackgates would be soooooo much better than the perfectly adequate panasonic capacitors. Blackgate won't give you a significantly stiffer PS. Yes, the power supply matters a lot, especially with this design. If you want a stiffer supply, you'd rather have to look at completly redesigning the PS with better regulators.

Well, maybe a pair of cheap zeners and 1n4148 might be enough to make a more serious difference: Using 3-pin regulators off-piste: part 1

But anyway, switching to black gates would in the best case give a subtle improvement. I would also btw rather change the pot than all the decent metal film resistors.
 
Jul 13, 2008 at 11:34 PM Post #59 of 62
Well, Justin didn't reply. So does anyone here know what to do to make the PS 220 volts?. Is it a simple process or does soldering have to be done. If I have to do any soldering, I'll pass and keep these untouched to maintain its value.
 
Jul 14, 2008 at 12:09 AM Post #60 of 62
Quote:

Originally Posted by donunus /img/forum/go_quote.gif
Well, Justin didn't reply. So does anyone here know what to do to make the PS 220 volts?. Is it a simple process or does soldering have to be done. If I have to do any soldering, I'll pass and keep these untouched to maintain its value.


Victorio should be able to figure it out. at worst it requires some soldering, yawn.
 
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