Best Tweak I have ever performed on Audio Sector GC3875

Destroyer OS. · 9th December 2008, 05:05 PM

If your capacitors can is isolated from the inside (Blackgate Type N are like mine) then you can wrap wire on one then to the other then to your ground....

Extreme improvement in how smooth the sound is, mine also has a 1.2kohm instead of 600ohm Riken and removed input resistor but the huge affect came with this mod.

Destroyer OS. · 9th December 2008, 05:52 PM

You will not get any closer to tube quality smoothness with a GC.

sharpi31 · 9th December 2008, 07:13 PM

Shouldn't there be another 1000uF cap in that amp?

Destroyer OS. · 9th December 2008, 07:41 PM

Under the rectifier board

danielwritesbac · 10th December 2008, 12:28 AM

Quote:

Originally posted by Destroyer OS.
If your capacitors can is isolated from the inside (Blackgate Type N are like mine) then you can wrap wire on one then to the other then to your ground.
. . .
You will not get any closer to tube quality smoothness with a GC.

Is the power amp or the preamp/source earth grounded?

Destroyer OS. · 10th December 2008, 12:45 AM

No, just neutral. I have found earth ground to be nothing but a pain in the butt in GC's.

pinkfloyd4ever · 10th December 2008, 04:51 AM

could you explain exactly what this mod does?

Ted205 · 10th December 2008, 08:30 AM

so you've wrapped wire around the capacitors to ground ?

Atilla · 10th December 2008, 04:18 PM

So how does grounding the casings of the caps do anything at all?

Destroyer OS. · 10th December 2008, 04:25 PM

Well these capacitors often carry a little bit of induced charge. This eliminates that first of all. Next it is affecting the electromagnetic field, causing a sort of shield if you will.

If it was on signal capacitors the removal of the charge could be good because I assume what it does is it steal a tiny bit of electron draw which would be the tops and bottoms of higher frequencies, creating a harsher sound. I based this idea on the concept of grounding speaker baskets which has that exact affect however the speaker baskets do not always charge and can take awhile to do so, making A-B comparison impossible, but this is just obvious.

There is no way to prove what it is doing unfortunately but the results are worth it, and there is no bad side affect at least with Blackgate type N capacitors because they have isolated cans. The voltage on the can may be high at times but the amperage is almost non-existent.

Try it

Hell try it even without removing the plastic jacket, it might give similar results in the case of power supply caps. But I can tell you in a Audiosector amplifier with the 1000/100 STD/N cap combo the 100 N caps to the chip sound a lot better naked before this mod too.

9th December 2008, 05:05 PM	#1
Destroyer OS. diyAudio Member Join Date: Nov 2005	Best Tweak I have ever performed on Audio Sector GC3875 If your capacitors can is isolated from the inside (Blackgate Type N are like mine) then you can wrap wire on one then to the other then to your ground.... Extreme improvement in how smooth the sound is, mine also has a 1.2kohm instead of 600ohm Riken and removed input resistor but the huge affect came with this mod.

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9th December 2008, 05:52 PM	#2
Destroyer OS. diyAudio Member Join Date: Nov 2005	You will not get any closer to tube quality smoothness with a GC.

9th December 2008, 07:13 PM	#3
sharpi31 diyAudio Member Join Date: Oct 2005	Shouldn't there be another 1000uF cap in that amp?

9th December 2008, 07:41 PM	#4
Destroyer OS. diyAudio Member Join Date: Nov 2005	Under the rectifier board

10th December 2008, 12:45 AM	#6
Destroyer OS. diyAudio Member Join Date: Nov 2005	No, just neutral. I have found earth ground to be nothing but a pain in the butt in GC's.

10th December 2008, 04:51 AM	#7
pinkfloyd4ever diyAudio Member Join Date: Apr 2008	could you explain exactly what this mod does?

10th December 2008, 08:30 AM	#8
Ted205 diyAudio Member Join Date: Jun 2008	so you've wrapped wire around the capacitors to ground ?

10th December 2008, 04:18 PM	#9
Atilla Soldering Gun Fanatic diyAudio Member Join Date: Jul 2008	So how does grounding the casings of the caps do anything at all?

10th December 2008, 04:25 PM	#10
Destroyer OS. diyAudio Member Join Date: Nov 2005	Well these capacitors often carry a little bit of induced charge. This eliminates that first of all. Next it is affecting the electromagnetic field, causing a sort of shield if you will. If it was on signal capacitors the removal of the charge could be good because I assume what it does is it steal a tiny bit of electron draw which would be the tops and bottoms of higher frequencies, creating a harsher sound. I based this idea on the concept of grounding speaker baskets which has that exact affect however the speaker baskets do not always charge and can take awhile to do so, making A-B comparison impossible, but this is just obvious. There is no way to prove what it is doing unfortunately but the results are worth it, and there is no bad side affect at least with Blackgate type N capacitors because they have isolated cans. The voltage on the can may be high at times but the amperage is almost non-existent. Try it Hell try it even without removing the plastic jacket, it might give similar results in the case of power supply caps. But I can tell you in a Audiosector amplifier with the 1000/100 STD/N cap combo the 100 N caps to the chip sound a lot better naked before this mod too.

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