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Heed canamp Mods Thread!! - Page 2

post #16 of 75
Quote:
Originally Posted by cotdt View Post
better would be to buy another canamp and use them in a balanced configuration. these kinds of amps really benefit from that.
Most interesting. Could you possibly elaborate on this, explaining the theory behind it and necessary alterations and connections that need to be made?
post #17 of 75
Thread Starter 
Quote:
to buy another canamp and use them in a balanced configuration. these kinds of amps really benefit from that.
How do you do it separate L R channel amps?
What about Pre-power combos?
post #18 of 75
i'm trying to get some components to upgrade my upcoming CanAmp, and i'll be happy if someone can list down the parts details:

1. what type of capacitors should i get for the power supply caps? D x L please. And what capacitance rating?
2. Ultrafast diodes upgrade = UF4007 only? Is there any other options?
3. what's the size of those 2x 100uF jamicons? Or all 35V 100uF sure gonna fit?
post #19 of 75
Quote:
Originally Posted by kaushama View Post
How do you do it separate L R channel amps?
What about Pre-power combos?
One Canamp will serve as the right channel and another Canamp will serve as the left channel. The output from each canamp will be positive, negative, and ground. ignore ground and connect positive and negative to a headphone channel. Needless to say, your headphones will have to be recabled for dual mono. For inputs, you'll need a balanced source.

You'll get four times the output and four times the slew rate. There will be stronger bass slam and more warmth, better detail and soundstage. At least, that's the usual effect for other solid state amps.
post #20 of 75
Interesting thread. The most interesting fact for me is that the Canamp uses a dual op-amp, not even single ops for each channel ... and it really sounds that good? Only interested because I was really tempted to give the Canamp a try but somehow always guessed it's a discrete design.
post #21 of 75
How about letting it burn in first?
post #22 of 75
Thread Starter 
Quote:
i'm trying to get some components to upgrade my upcoming CanAmp, and i'll be happy if someone can list down the parts details:

1. what type of capacitors should i get for the power supply caps? D x L please. And what capacitance rating?
2. Ultrafast diodes upgrade = UF4007 only? Is there any other options?
3. what's the size of those 2x 100uF jamicons? Or all 35V 100uF sure gonna fit?
I ordered from uk.farnell following parts!

158409 470NF 275VAC Polypropylene Caps (2)
1200769 10NF 1000V Polypropylene Caps (2)
9751700 100NF 250V Polypropylene Caps (2)
1198694 10000UF 35V Panasonic TS-HA Low ESR Caps (2)
1144665 10UF 35V Rubicon ZA Caps (2)
1144661 100UF 25V Rubicon ZA Caps (2)
9551638 uF5002 1A 100V max: FAST RECOVERY 50ns Diodes (4)
1061811 VISHAY DALE 100 OHM 1% 10W (2)

From rswww

813-115 IC,socket

For power caps Panasonic TS-HA 105 C series are better and Rubicon ZA series considered to be true audiophile caps. I chose them over Elna Cerafines.
UF 5002 is better than UF 5007 in terms of recovery times.
I will be getting some Audiophile quality silver soldering for soldering job.
I am in search of good silver wire for internal wiring.
post #23 of 75
Quote:
Originally Posted by kaushama View Post
I ordered from uk.farnell following parts!

158409 470NF 275VAC Polypropylene Caps (2)
1200769 10NF 1000V Polypropylene Caps (2)
9751700 100NF 250V Polypropylene Caps (2)
1198694 10000UF 35V Panasonic TUHA Low ESR Caps (2)
1144665 10UF 35V Rubicon ZA Caps (2)
1144661 100UF 25V Rubicon ZA Caps (2)
9551638 uF5002 1A 100V max: FAST RECOVERY 50ns Diodes (4)
1061811 VISHAY DALE 100 OHM 1% 10W (2)
can you please guide me on which caps are for the power supply and which are to replace the 100uF? Thanks in advance. I know nothing bout electronics
post #24 of 75
Thread Starter 



In the picture Cap marked "A" is the power cap which should be replaced with 10000UF 35V Panasonic TUHA Low ESR Caps.
Cap marked "B" is for 100UF 25V Rubicon ZA Caps.
Parts marked "D" are for uF5002 1A 100V max: FAST RECOVERY 50ns Diodes.
Parts "C" is replaced by VISHAY DALE 100 OHM 1% 10W.
Two B like caps placed near opamp is replaced by 10UF 35V Rubicon ZA Caps.

Rest of the white box like caps are replaced by Polypropylene caps. Ones marked 10n J100 should be replaced with 10NF 1000V Polypropylene Caps.

1J63, 1K63 and the one just behind opamp is replaced by 100NF 250V Polypropylene Caps.

47K63 is for 470NF 275VAC Polypropylene Caps!

These poly props are larger than caps installed default and may have to secured under the board with some strain relief by pasting it to the board in addition to soldering. Its well illustrated in D-Cee's picture.

post #25 of 75
Thread Starter 
AND forgot to mention I have some LM4562 opamps on the way too.
post #26 of 75
Thanks kaushama! I owe you one! By the way do you have any "after-mod" pics?
post #27 of 75
Thread Starter 
I am still waiting for parts!!!
post #28 of 75
Have you tried AD797 or AD8620?
I got mixed results on the integrated HP amp of my former cd-player - a radically modified Marantz CD-80 (NOS).
I ended up choosing LM4562, but it could very well be design dependent ...
post #29 of 75
Thread Starter 
Apart from LM4562 which is in the same class of OPA627/637, AD8066 seems to be a very good OPAMP which gives more definition and clarity.
post #30 of 75
I'm seriously considering this opamp mod:

http://www.bursonaudio.com/Burson_HDAM_Module.htm

Lad
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