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Old 6th September 2009, 08:25 PM   #201
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Originally Posted by dubai2000 View Post
I have aquestion regarding the 100pF cap (C1). When I tried to replace the original Panasonic film cap with a styroflex all I got is a loud hum. Any ideas why such a cap doesn't seem to work in that position?
Isn't C1 supposed to be 10,000uf not 100pf?

Edit: Sorry you are talking about C1 on the MC pre right?

Jeff

Last edited by vinylkid58; 6th September 2009 at 08:32 PM.
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Old 6th September 2009, 08:50 PM   #202
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Yes, C1 on the MC pre.
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Old 14th September 2009, 10:41 AM   #203
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Hi, Does anybody have Pearl PCB's they would like to sell. I need 4 but 2 will do for now?

Regards to you all
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Old 2nd October 2009, 01:27 PM   #204
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Hmmm, those Lundahl LL9206 trannies are nice and small !
Looks to me that they are propely shielded, so I can connect the metal shield to the ground I want to build them together with my pearl in a metal case. Will this be sufficient against the horrible hum
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Old 2nd October 2009, 04:04 PM   #205
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Default MC Step-Up Calculator

very handy...
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Old 11th October 2009, 01:03 PM   #206
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I honestly hope this will be the last time I'm closing my Pearl
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Old 11th October 2009, 09:59 PM   #207
Zen Mod is offline Zen Mod  Serbia
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I honestly hope this will be the last time I'm closing my Pearl
fugly !

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Old 11th October 2009, 10:07 PM   #208
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And the PoorSerbianMan Lightspeed goes in a same chassis like this
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Old 13th February 2010, 01:24 PM   #209
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A few things here for the archive.

1. I changed the 2sk170's for (SMD) BF862.
It gives a little bit more gain and clearer sound.


2. I also use the 9V battery option instead of that noisy zenerdiode.
I installed a Reed relais that is fed by the powersupply and that switches the battery off if the Pearl is shut down. This way the battery will last longer, it's only in use when the Pearl is powered. The sound is purer than using the zener.
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Old 13th February 2010, 03:19 PM   #210
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i always wanted to try the battery option - never got around to it.

nice hacking! The Pearl is a classic.
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