Problem - not enough treble or too much bass.





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Posted via a free Usenet account from http://www.teranews.com

So what have you tried so far?

Neil S.

"amyotte" wrote in message
.. .
Problem - not enough treble or too much bass.





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Posted via a free Usenet account from http://www.teranews.com

First, recap the radio . most critical here , C14 is .006 mfd, make sure
its not a higher value. You can lower it to .003 or .002 probably and it
will increase the treble, but watch for screeching at louder volumes if you
lower the value.

Check that C7 is .006 value also. Check that C4 is 260mmf (pf) and not
higher value. If its original and not changed, its probably OK since its a
mica.

If all those are OK and you want to get more treble, reduce C6 to .01mfd.
This will cut bass a little, making the high end stronger in proportion.
On some sets where there is not enough bass, I raise this value.

Mark Oppat


"amyotte" wrote in message
.. .
Problem - not enough treble or too much bass.





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Posted via a free Usenet account from http://www.teranews.com

"Mark Oppat" wrote in message
. ..
First, recap the radio . most critical here , C14 is .006 mfd, make sure
its not a higher value. You can lower it to .003 or .002 probably and it
will increase the treble, but watch for screeching at louder volumes if
you lower the value.

Check that C7 is .006 value also. Check that C4 is 260mmf (pf) and not
higher value. If its original and not changed, its probably OK since its
a mica.

If all those are OK and you want to get more treble, reduce C6 to .01mfd.
This will cut bass a little, making the high end stronger in proportion.
On some sets where there is not enough bass, I raise this value.

Mark Oppat


"amyotte" wrote in message
.. .
Problem - not enough treble or too much bass.



I have recapped the radio. The radio had not worked for about 20 years.
There were strange attempts at repairs but I returned the wiring back to the
schematic.
I had picked up that C4 is not 260mfd as shown on the R404 schematic by
comparing this schematic to the R403 schematic.

I will try the C14 and C6 changes and see what happens.

Thanks
Brian



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Posted via a free Usenet account from http://www.teranews.com

In article ,
"Mark Oppat" wrote:

First, recap the radio . most critical here , C14 is .006 mfd, make sure
its not a higher value. You can lower it to .003 or .002 probably and it
will increase the treble, but watch for screeching at louder volumes if you
lower the value.

Check that C7 is .006 value also. Check that C4 is 260mmf (pf) and not
higher value. If its original and not changed, its probably OK since its a
mica.

Also don't forget to check the value of C13, this capacitor is also
critical to the amount of treble and the treble distortion.


Regards,

John Byrns


"amyotte" wrote in message
.. .
Problem - not enough treble or too much bass.

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Posted via a free Usenet account from http://www.teranews.com


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