Ping Don..
 

Keith G wrote:
"Nick Gorham" wrote in message
...

Keith G wrote:



Is that it then - the cap's fuct?

My money is on that.



Well, your money is safe - I swapped the cap out of the Good Amp and put
it in the Bad Amp and the Bad Boy is singing like a good 'un as I type
and...

....rushes to check again....

the meter is (dare I say it?) - *rock steady*!!

:-)

Well done Nick and many thanks (you too, Don) - with your brain and my
soldering iron and we could conquer the world!!

Of course, the Good Amp's pretty silent now - what we want now is a
*pair of caps*. What do you suggest - same rating? (Forget *bling* -
just gimme the specs and I should think Tony'll get summat from
Maplins!! :-)


Checks again - yep - still right on the same mark on the meter!!






Well, from Maplins, I would think VM88V would do. 220nf 630v. (its
marked as web only on their site).

Any poly cap of .22uf or bigger, or lower, down to 0.1u should be fine
as Don said. Check the B+ and select a voltage rateing more than that.

Or maybe a

SONIQS SAX 0.22uF Ref: SAX0u22

From the WD site, they deliver quickly.

--
Nick

Ping Don..
 

"Nick Gorham" wrote

Well, from Maplins, I would think VM88V would do. 220nf 630v. (its
marked as web only on their site).

Any poly cap of .22uf or bigger, or lower, down to 0.1u should be fine
as Don said. Check the B+ and select a voltage rateing more than that.


OK, the amp's still good and steady. I have spoken to Tony and told him
to try and get a pair of '1mF' (is that the same as 1uF?) minimum 500V -
the Anode Voltage on the Good Amp was about 438, IIRC..??



Or maybe a

SONIQS SAX 0.22uF Ref: SAX0u22

From the WD site, they deliver quickly.


OK.

Ping Don..
 

Keith G wrote:
"Nick Gorham" wrote


Well, from Maplins, I would think VM88V would do. 220nf 630v. (its
marked as web only on their site).

Any poly cap of .22uf or bigger, or lower, down to 0.1u should be fine
as Don said. Check the B+ and select a voltage rateing more than that.



OK, the amp's still good and steady. I have spoken to Tony and told him
to try and get a pair of '1mF' (is that the same as 1uF?) minimum 500V -
the Anode Voltage on the Good Amp was about 438, IIRC..??


Err, not mF is 10^-3F, uF is 10^-6F, so 1mf = 1000uf. In any case 1uf
will work but is far bigger than it needs to be, but whatever.

It will be one hell of a output transformer that will allow the
difference between a 1uf and 0.22uf cap to be heard in that situation.


--
Nick

Ping Don..
 

"Nick Gorham" wrote in message
...
Keith G wrote:
"Nick Gorham" wrote


Well, from Maplins, I would think VM88V would do. 220nf 630v. (its
marked as web only on their site).

Any poly cap of .22uf or bigger, or lower, down to 0.1u should be
fine as Don said. Check the B+ and select a voltage rateing more than
that.



OK, the amp's still good and steady. I have spoken to Tony and told
him to try and get a pair of '1mF' (is that the same as 1uF?) minimum
500V - the Anode Voltage on the Good Amp was about 438, IIRC..??


Err, not mF is 10^-3F, uF is 10^-6F, so 1mf = 1000uf. In any case 1uf
will work but is far bigger than it needs to be, but whatever.


Here's a close-up of the actual:

http://www.apah69.dsl.pipex.com/show/L1000577.JPG


It will be one hell of a output transformer that will allow the
difference between a 1uf and 0.22uf cap to be heard in that situation.


OK.

Ray's been here and has gone home to see what he's got in his bin - I'd
love 'em out the way now!!

Ping Don..
 

Keith G wrote:
"Nick Gorham" wrote in message
...

Keith G wrote:

"Nick Gorham" wrote



Well, from Maplins, I would think VM88V would do. 220nf 630v. (its
marked as web only on their site).

Any poly cap of .22uf or bigger, or lower, down to 0.1u should be
fine as Don said. Check the B+ and select a voltage rateing more than
that.



OK, the amp's still good and steady. I have spoken to Tony and told
him to try and get a pair of '1mF' (is that the same as 1uF?) minimum
500V - the Anode Voltage on the Good Amp was about 438, IIRC..??


Err, not mF is 10^-3F, uF is 10^-6F, so 1mf = 1000uf. In any case 1uf
will work but is far bigger than it needs to be, but whatever.



Here's a close-up of the actual:

http://www.apah69.dsl.pipex.com/show/L1000577.JPG



sarcasmWell, there you go then, it must be the same, I can't imagine
Audio Note making such a mistake /sarcasm

Well, last time I looked

m = milli = 10^-3
u = micro = 10^-6
n = nano = 10^-9

Maybe they didn't have a greek font, so used the spare m off the from t
of micro,

--
Nick

Ping Don..
 

"Nick Gorham" wrote in message
. uk...
Keith G wrote:
"Nick Gorham" wrote in message
...

Keith G wrote:

"Nick Gorham" wrote



Well, from Maplins, I would think VM88V would do. 220nf 630v. (its
marked as web only on their site).

Any poly cap of .22uf or bigger, or lower, down to 0.1u should be
fine as Don said. Check the B+ and select a voltage rateing more
than that.



OK, the amp's still good and steady. I have spoken to Tony and told
him to try and get a pair of '1mF' (is that the same as 1uF?)
minimum 500V - the Anode Voltage on the Good Amp was about 438,
IIRC..??


Err, not mF is 10^-3F, uF is 10^-6F, so 1mf = 1000uf. In any case 1uf
will work but is far bigger than it needs to be, but whatever.



Here's a close-up of the actual:

http://www.apah69.dsl.pipex.com/show/L1000577.JPG



sarcasmWell, there you go then, it must be the same, I can't imagine
Audio Note making such a mistake /sarcasm

Well, last time I looked

m = milli = 10^-3
u = micro = 10^-6
n = nano = 10^-9

Maybe they didn't have a greek font, so used the spare m off the from
t of micro,


I hafta say the m = u confusion didn't help, but we (Ray) have evolved
that any cap from 0.47 - 1.5 uF/min 450V should be OK - foil, poly or
whatever?