Galaxy 77/88/99/Melaka etc.
- Goldfinger
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Galaxy 77/88/99/Melaka etc.
ept360014b
Receive:
C36: Change to a 4.7uF, 50 Volt (or better) mylar/polyester film or non-polarized electrolytic
C38: Remove for more highs (you may like it without it removed)
C39. C154, C155: change to 4.7uF 50 volt (or better) Non-polarized electrolytic or mylar/polyester film
C157: Change to a 4.7uF, 16 Volt (or better) tantalum (observe polarity)
Transmit:
C129: Change to a 10uF, 16 Volt (or better) tantalum (observe polarity)
C187, C191: Change to 4.7uF, 50 volt (or better) mylar/polyester film or non-polarized electrolytic
C128: Want some bass boost in the mic amp? Change to a 2.2uF, 16 volt (or better) electrolytic (observe polarity)
C190: Change to a 330uF, 25 volt (or better) electrolytic (observe polarity)
Direct inject at C191
Receive:
C36: Change to a 4.7uF, 50 Volt (or better) mylar/polyester film or non-polarized electrolytic
C38: Remove for more highs (you may like it without it removed)
C39. C154, C155: change to 4.7uF 50 volt (or better) Non-polarized electrolytic or mylar/polyester film
C157: Change to a 4.7uF, 16 Volt (or better) tantalum (observe polarity)
Transmit:
C129: Change to a 10uF, 16 Volt (or better) tantalum (observe polarity)
C187, C191: Change to 4.7uF, 50 volt (or better) mylar/polyester film or non-polarized electrolytic
C128: Want some bass boost in the mic amp? Change to a 2.2uF, 16 volt (or better) electrolytic (observe polarity)
C190: Change to a 330uF, 25 volt (or better) electrolytic (observe polarity)
Direct inject at C191
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- Goldfinger
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Re: Galaxy 77/88/99/Melaka etc.
Looking for hifi cap mods for a Connex Saturn cx33 EPT360015C , The board is a little bit different .
Thanks !
Slowhand
Thanks !
Slowhand
- Goldfinger
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Re: Galaxy 77/88/99/Melaka etc.
Looks like the DX55HP is the same. DX55HP, Connex Saturn CX33 mod posted Here
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Re: Galaxy 77/88/99/Melaka etc.
I'll check it again later this week. But c154 and c155 in my cx33 I believe is C128 and C129. One is polarized electrolytic and other is polarized tantalum capacitor. I will try and trace it out on the schematic later this week. I really appreciate the help ! I done the rx and tx mods to my 2517 . It sounded so much better on rx I found the cx33 a little wimpy sounding lol !
- Goldfinger
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Re: Galaxy 77/88/99/Melaka etc.
C128 and C129 are in the TX circuit. C154 and C155 are RX. The mods and the parts locations are on another thread, which can be found by clicking on the blue word "here" above your last post.
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- Goldfinger
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Re: Galaxy 77/88/99/Melaka etc.
After bypassing echo board alone, tx audio is super bass-y without tx cap changes. Any change to bring up the TX highs to match the lows? Thanks.
"Our main business is not to see what lies dimly in the distance, but to do what lies clearly at hand." ~T. Carlyle
- Goldfinger
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Re: Galaxy 77/88/99/Melaka etc.
There isn't much shunt capacitance that can be lowered any more to easily get more highs. You could try making C128 lower in value. Try changing it from 1uF to a .47uF cap.
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Re: Galaxy 77/88/99/Melaka etc.
Thanks Goldfinger! I will try that and see how it gets along.Goldfinger wrote: ↑Mon Apr 26, 2021 8:44 amThere isn't much shunt capacitance that can be lowered any more to easily get more highs. You could try making C128 lower in value. Try changing it from 1uF to a .47uF cap.
"Our main business is not to see what lies dimly in the distance, but to do what lies clearly at hand." ~T. Carlyle
Re: Galaxy 77/88/99/Melaka etc.
I lowered that C128 to .47uF per your suggestion, it did help. Thank you good sir!Goldfinger wrote: ↑Mon Apr 26, 2021 8:44 amThere isn't much shunt capacitance that can be lowered any more to easily get more highs. You could try making C128 lower in value. Try changing it from 1uF to a .47uF cap.
"Our main business is not to see what lies dimly in the distance, but to do what lies clearly at hand." ~T. Carlyle