Zapco Z400C4-SL... Not Again! - Page 4 - diyAudio
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Old 4th September 2012, 05:37 AM   #31
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Most amps (especially those with inductors between the rectifiers and the caps) could use less capacitance. The 1000S didn't need more than what was used.
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Old 4th September 2012, 06:53 AM   #32
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soundstreams are less "typical" between the inductor, and how the power supply is setup, there is less need for the larger caps. you may not need them, but i am unsure how much of a difference it is going to make on the output circuitry. i, personally would go back to the 4700's

(forgot to push "post" this afternoon, lol)
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Old 4th September 2012, 09:51 AM   #33
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I never knew that's what those were for. Thanks for pointing that out.
I Wonder why the heck zapco didn't use inductors?
Would have used less real-estate.
Yes I will put new ones back in. Every time I touch this board it feels like I'm doing brain surgery.
Now to find some inserts to replace the missing ones. I looked in my PACE kit and they are too small.
Thanks guys for putting me back to work
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Old 4th September 2012, 10:27 AM   #34
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just different designs, i suppose. it was probably cheaper to just use larger caps, as well as having more stored rail power. than there is the fact that they can get hot, and have more rigid vibrating mass. i have seen many inductors that have fallen loose from the board. mainly larger class-d amps. your guess is as good as mine.
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Old 4th September 2012, 10:37 AM   #35
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just a side note: i would use a different amp schematics for making comparisons to the zapco. don't think you can get x-tant schematics, whic seem to be similar, but the circuitry does somewhat resemble phoenix gold (aside from case appearance being close to the m-series, lol. the 90's soundstreams always seem to have more different things going on than other typical designs.
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Old 4th September 2012, 06:36 PM   #36
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I wish zapco would let loose of the schematics for the discontinued models but I guess they want to sell the newer stuff.
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Old 6th September 2012, 08:19 AM   #37
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Just a short question!
As you have a Z400 on your table, can you tell me how the fan is connected?
Because there are four contacts for it.
Mine came without the fan. It was broken off it's frame and gone.


Thanks in advance!

Julian
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Old 6th September 2012, 09:18 AM   #38
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Hear you go...
Attached Images
File Type: jpg fan.jpg (311.5 KB, 46 views)
File Type: jpg fan1.jpg (390.5 KB, 45 views)
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Old 6th September 2012, 09:21 AM   #39
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I tried it both ways and it just reverses the fan. I think it blows air into the unit as there is dust on the 16v caps from that side.
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Old 22nd September 2012, 11:07 AM   #40
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I just completed mine again!
Thank you for the information!
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