nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
i dont have the left chanel mod and my amp sounds sweet.
maybe it depends on the specfic board in question.
maybe it depends on the specfic board in question.
The Melos Modification Thread
- Thread starter Computerpro3
- Start date
Jahn
Headphoneus Supremus Prolificus
- Joined
- Jul 2, 2004
- Posts
- 21,333
- Likes
- 40
i'm getting the shakes.
- Joined
- Mar 29, 2002
- Posts
- 4,136
- Likes
- 449
Quote:
I will try to get pictures posted this weekend,as for tubes right now I am using Mullard 7308s, I will put back either my amperex 7308 pinchwaist or 6922 pinchwaist in for the meet to give the amp alittle more punch.
| Originally Posted by Computerpro3 Also, high res pics of yours, especially the capacitors, would be wonderfully useful. edit: what tubes are you running? |
I will try to get pictures posted this weekend,as for tubes right now I am using Mullard 7308s, I will put back either my amperex 7308 pinchwaist or 6922 pinchwaist in for the meet to give the amp alittle more punch.
nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
i just got out my "frankengrado" sr-125's.
hooked them upto the melos and sweetness.
it took me this long because i sacrificed the neutrik 4-pin to recable my hp1000 when i got them.
part of my mouser order was a few sets of these lovely plugs. and i have been too busy listening and moding.
for those who cant rember, and those who wont forget, when i got my hp1000 it was terminated in a 1/8" ratshack plug. the jguwbc is still plenty long.
hooked them upto the melos and sweetness.
it took me this long because i sacrificed the neutrik 4-pin to recable my hp1000 when i got them.
part of my mouser order was a few sets of these lovely plugs. and i have been too busy listening and moding.
for those who cant rember, and those who wont forget, when i got my hp1000 it was terminated in a 1/8" ratshack plug. the jguwbc is still plenty long.
Mercuttio
Key Conspirator in the Quest to Murder Music
- Joined
- Apr 22, 2005
- Posts
- 5,803
- Likes
- 155
Quote:
I call dibs on last place!
| Originally Posted by lan There could be 6 melos' in Nov. How crazy would THAT be? 
|
I call dibs on last place!
nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
why must the pho-tentiometer suck so bad?
why must the stepped attenuator be so awsome?
why is the gain on the melos so high that i can only use the first 3 clicks on said stepper?
why must the pho-tentiometer be setup for balanced operation (requires adding parts)?
why are there soooo many wires connecting the photentiometer to the mainboard?
argh. this just sucks.
why must the stepped attenuator be so awsome?
why is the gain on the melos so high that i can only use the first 3 clicks on said stepper?
why must the pho-tentiometer be setup for balanced operation (requires adding parts)?
why are there soooo many wires connecting the photentiometer to the mainboard?
argh. this just sucks.
Jahn
Headphoneus Supremus Prolificus
- Joined
- Jul 2, 2004
- Posts
- 21,333
- Likes
- 40
whoa that sounds totally different than my old melos! man, no consistency between units at all!
nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
Quote:
i think that the photentiometer has an "odd" volume slope, or at least dosnt go to 0db attenuation. this is just a guess though.
my stepper is full range, -66(or so) to 0db.
| Originally Posted by Jahn whoa that sounds totally different than my old melos! man, no consistency between units at all! |
i think that the photentiometer has an "odd" volume slope, or at least dosnt go to 0db attenuation. this is just a guess though.
my stepper is full range, -66(or so) to 0db.
Jahn
Headphoneus Supremus Prolificus
- Joined
- Jul 2, 2004
- Posts
- 21,333
- Likes
- 40
oh, the melos definitely doesn't go to dead silence ever - it's the nature of the beast. i have an explanation on a pdf somewhere - i'll go try and find it.
Zanth
SHAman who knew of Head-Fi ten years prior to its existence
- Joined
- Oct 11, 2001
- Posts
- 9,570
- Likes
- 44
Quote:
As a quick aside, can you explain to me the -66 to 0db? My receiver goes from -88 to 0 db and I never understood this. Of course I had been used to 0-100 for a volume rating, no units, just level indicators.
| Originally Posted by nikongod i think that the photentiometer has an "odd" volume slope, or at least dosnt go to 0db attenuation. this is just a guess though. my stepper is full range, -66(or so) to 0db. |
As a quick aside, can you explain to me the -66 to 0db? My receiver goes from -88 to 0 db and I never understood this. Of course I had been used to 0-100 for a volume rating, no units, just level indicators.
Jahn
Headphoneus Supremus Prolificus
- Joined
- Jul 2, 2004
- Posts
- 21,333
- Likes
- 40
Found it! Hosted for only Seven Days, so pick up the PDF soon or all the secrets of the Porzelli Phototometer shall disappear forever!
Uh, or however you spell that Pot. Or that creator's name!
Uh, or however you spell that Pot. Or that creator's name!
Computerpro3
1000+ Head-Fier
- Joined
- Dec 31, 2005
- Posts
- 1,290
- Likes
- 18
Pretty good read. Now I'm curious, how exactly can a stepped attenuator be a better sounding control?
nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
Quote:
it dosnt introduce its own noise.
to agree with jahn, the melos was never TRULY silent, but it was SIGNIFCANTLY quieter with the stepper. with teh stepper (source on mute) i had to get to 3/4 knob to hear noise. with the pho-tentiometer, it gets noisy at about 1/3 knob.
by 1/3 knob, i mean 1/3 of the range from minimum. 3/4 knob is almost full volume, about 18 clicks... listening volume was 3 clicks.
| Originally Posted by Computerpro3 Pretty good read. Now I'm curious, how exactly can a stepped attenuator be a better sounding control? |
it dosnt introduce its own noise.
to agree with jahn, the melos was never TRULY silent, but it was SIGNIFCANTLY quieter with the stepper. with teh stepper (source on mute) i had to get to 3/4 knob to hear noise. with the pho-tentiometer, it gets noisy at about 1/3 knob.
by 1/3 knob, i mean 1/3 of the range from minimum. 3/4 knob is almost full volume, about 18 clicks... listening volume was 3 clicks.
Jahn
Headphoneus Supremus Prolificus
- Joined
- Jul 2, 2004
- Posts
- 21,333
- Likes
- 40
I'm in the zone today.
Here's the Melos Owner's Manual!
Melos - the Original Price List!
SHHH! Melos - PROJECT "X"!
Here's the Melos Owner's Manual!
Melos - the Original Price List!
SHHH! Melos - PROJECT "X"!
nikongod
DIY-ku
- Joined
- Jan 24, 2005
- Posts
- 8,882
- Likes
- 130
jahn>all.
that is all.
on a scale fo 1-10, with 10 being better, i rate jahn as a solid 8. this is actually quite good, because nancy (co-worker) only got a 7. lynn (ex girlfriend) got a 9.
ooh, there is more!
fwiw, if you print the pages coresponding to both the actual board layout, and the actual board traces you can lay them over eahother on a light table (or just hold them up to a bright light) and see where stuff goes. much easier than looking on the actual board.
this is helpfull because you dont have to spend so long looking for a specfic resistor, or other part. if it uses a wire rather than a trace your not the best off, but sometimes it saves work.
that is all.
on a scale fo 1-10, with 10 being better, i rate jahn as a solid 8. this is actually quite good, because nancy (co-worker) only got a 7. lynn (ex girlfriend) got a 9.
ooh, there is more!
fwiw, if you print the pages coresponding to both the actual board layout, and the actual board traces you can lay them over eahother on a light table (or just hold them up to a bright light) and see where stuff goes. much easier than looking on the actual board.
this is helpfull because you dont have to spend so long looking for a specfic resistor, or other part. if it uses a wire rather than a trace your not the best off, but sometimes it saves work.
Users who are viewing this thread
