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Mooly

Mooly

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Your methodology intrigues me Andrea

If you saw this, my Micromega Stage (one channel shown) what would you use ?
Forget the offset null pot... as that limits drop in devices... I'm just intrigued what you might use.
I use OPA604 for the I/V and AD845 for the filter/buffer.
 

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A

Andrea:

Banned
Joined 2009
Mooly said:
Your methodology intrigues me Andrea

If you saw this, my Micromega Stage (one channel shown) what would you use ?
Forget the offset null pot... as that limits drop in devices... I'm just intrigued what you might use.
I use OPA604 for the I/V and AD845 for the filter/buffer.
Click to expand...
I'm a bit in a hurry now... Is the DAC a TDA1305? Or is it "TDA1306"? It's a bit hard to read.. (I'll have to reply later, sorry)
 
SY

SY

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Joined 2002
SYclotron.com
Mooly said:
I use OPA604 for the I/V and AD845 for the filter/buffer.
Click to expand...

Well, let's see, you've got two 4s in there and that's an 8. The word "eight" starts with "e," which is the fifth letter of the alphabet. 5 x 8 = 40, which is a 4, so we're back to too many 4s. This is circular. The symbol for a tube is based on a circle, tube sockets are circular. So therefore, you need to use a tube to replace the AD845.

Now, what kind of tube? A naive person, not steeped in the arcana of true numerology, would immediately think "845." But that's bad thinking, because it brings five 4s into the picture, the 4 in 845, the two 4s in the "8," and because 845 is numerologically an 8, there's two more 4s. This is NOT good.

So clearly, you need a CCa. C is 3, a is 1, so CCa is 7. This is neither a 4 nor divisible by a 4.

Don't listen to self-appointed hacks who don't really understand numerology properly.
 
Mooly

Mooly

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Andrea: said:
I'm a bit in a hurry now... Is the DAC a TDA1305? Or is it "TDA1306"? It's a bit hard to read.. (I'll have to reply later, sorry)
Click to expand...

It's actually a TDA1305T (one per channel... the posh way of doing it lol)

If you look at the diagram those "inbuilt" opamps are fully accessible and it would no doubt be possible to add some outboard opamps :)
That could be a very interesting mod indeed.
 

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Mooly

Mooly

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Joined 2007
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SY said:
Well, let's see, you've got two 4s in there and that's an 8. The word "eight" starts with "e," which is the fifth letter of the alphabet. 5 x 8 = 40, which is a 4, so we're back to too many 4s. This is circular. The symbol for a tube is based on a circle, tube sockets are circular. So therefore, you need to use a tube to replace the AD845.

Now, what kind of tube? A naive person, not steeped in the arcana of true numerology, would immediately think "845." But that's bad thinking, because it brings five 4s into the picture, the 4 in 845, the two 4s in the "8," and because 845 is numerologically an 8, there's two more 4s. This is NOT good.

So clearly, you need a CCa. C is 3, a is 1, so CCa is 7. This is neither a 4 nor divisible by a 4.

Don't listen to self-appointed hacks who don't really understand numerology properly.
Click to expand...

I see :D:crackup:
 
A

Andrea:

Banned
Joined 2009
SY said:
Well, let's see, you've got two 4s in there and that's an 8. The word "eight" starts with "e," which is the fifth letter of the alphabet. 5 x 8 = 40, which is a 4, so we're back to too many 4s. This is circular. The symbol for a tube is based on a circle, tube sockets are circular. So therefore, you need to use a tube to replace the AD845.

Now, what kind of tube? A naive person, not steeped in the arcana of true numerology, would immediately think "845." But that's bad thinking, because it brings five 4s into the picture, the 4 in 845, the two 4s in the "8," and because 845 is numerologically an 8, there's two more 4s. This is NOT good.

So clearly, you need a CCa. C is 3, a is 1, so CCa is 7. This is neither a 4 nor divisible by a 4.

Don't listen to self-appointed hacks who don't really understand numerology properly.
Click to expand...
You must drink a lot, and I diagnose it's vodka :)
 
A

Andrea:

Banned
Joined 2009
Mooly said:
It's actually a TDA1305T (one per channel... the posh way of doing it lol)

If you look at the diagram those "inbuilt" opamps are fully accessible and it would no doubt be possible to add some outboard opamps :)
That could be a very interesting mod indeed.
Click to expand...
TDA1305...

I would use the LM4562HA, but you need singles... then I would use LME49870 + OPA1611/OPA211ID/OPA627BP. ;)
 
Mooly

Mooly

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Thanks Andrea... interesting.
The LM4562 is highly regarded, although dual of course. All the newer types are all surface mount now... not a huge problem I know.

I just feel that what I am using works so well in the Micromega.
And then the amp has an OPA2604 in each channel.

Thanks :)
 
A

Andrea:

Banned
Joined 2009
Mooly said:
Thanks Andrea... interesting.
The LM4562 is highly regarded, although dual of course. All the newer types are all surface mount now... not a huge problem I know.

I just feel that what I am using works so well in the Micromega.
And then the amp has an OPA2604 in each channel.

Thanks :)
Click to expand...
What you have makes: TDA1305 + AD845 + OPA604 = 13445568, which doesn't sound bad. But, with the LME49870 + e.g. OPA1611, you can improve neutrality (besides transparency).

Regarding the LM4562, I added the HA bit because I consider it important given the limitations this chip displays in the plastic DIP form.
 
F

fastvideo

Member
Joined 2005
Andrea: said:
What you have makes: TDA1305 + AD845 + OPA604 = 13445568, which doesn't sound bad. But, with the LME49870 + e.g. OPA1611, you can improve neutrality (besides transparency).

Regarding the LM4562, I added the HA bit because I consider it important given the limitations this chip displays in the plastic DIP form.
Click to expand...


I have all these sitting CDP here that I am not satisfy.

With the help of your magic formula, what is a good opamp to start with,
PCM56P +? = 12345678
PCM69AP +? +? =12345678
Single TDA1543 NOS +? +? =12345678
PCM1732 +? +? =12345678
:confused::confused::confused::confused::confused:
 
A

Andrea:

Banned
Joined 2009
fastvideo said:
I have all these sitting CDP here that I am not satisfy.

With the help of your magic formula, what is a good opamp to start with,
PCM56P +? = 12345678
PCM69AP +? +? =12345678
Single TDA1543 NOS +? +? =12345678
PCM1732 +? +? =12345678
:confused::confused::confused::confused::confused:
Click to expand...
You're forgetting of number 9. :)

I think you can do the "maths" by yourself... just try with all the opamps you can think of... :)


Just a tip: it seems that the most important thing (for a natural sound quality) is to have the first/lower numbers covered, rather than having more numbers with the lower ones uncovered. :)
 
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scott wurcer

scott wurcer

R.I.P
Joined 2004
SY said:
Don't listen to self-appointed hacks who don't really understand numerology properly.
Click to expand...

You need some lessons from "The Beast" himself.

ABRAHADABRA = 418
ABRAHADABRA has 11 letters
ABRAHADABRA = 1+2+2+1+5+1+4+1+2+2+1 = 22
The five letters in the word are: A, the Crown; B, the Wand; D, the Cup; H, the Sword; R, the Rosy Cross; and refer further to Amoun the Father, Thoth His messenger, and Isis, Horus, Osiris, the divine-human triad.
Also 418 = ATh IAV, the Essence of IAO
418= BVLShKIN, or Boleskine
418= RA HVVR, or Ra Hoor
418= The sum of all integers between 13 and 31 inclusive.
Abrahadabra is from Abrasax, Father Sun, which = 365 [8]
418 = 22 x 19 Manifestation
 
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