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Old 2nd December 2013, 06:46 AM   #1
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Default grounded collector amp

Hello
greetings could anyone please explain how is ground indicated points connected to ground power supply
warm regards
andrew lebon
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File Type: pdf RAM_MASeries_schematic.pdf (356.1 KB, 127 views)
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Old 2nd December 2013, 06:48 AM   #2
sajti is offline sajti  Hungary
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The file is psw protected, so I'm not able to open..

Sajti
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Old 2nd December 2013, 06:51 AM   #3
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password - rampass
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Old 2nd December 2013, 07:01 AM   #4
Mooly is offline Mooly  United Kingdom
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I've seen these type of circuits before. Its just drawn unconventionally that's all.

The collectors of the outputs drive the speaker (look at the symbols) with the speaker returned to the centre point of the two large reservoir caps. Signal ground is the little solid black ground symbol in the middle.
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Old 2nd December 2013, 07:05 AM   #5
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Hi Mooly
greetings its old technology just want to try it ground connection just cant get it
warm regards
andrew lebon
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Old 2nd December 2013, 07:07 AM   #6
sajti is offline sajti  Hungary
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Hi Andrew,

this inside out amplifier, has one important thing: Do not ground the transformer secondary. Just connect it to the middle point between the psu capacitors.

Anyway the drawing is quite correctly shows, how to connect the power gnd (earth symbol), and the signakl gnd (solid line).

However I have never heard this type of qsc clones sounding good...

Sajti
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Old 2nd December 2013, 07:58 AM   #7
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Its a QSC and Crown Topology..There are some explanations here.
What?!
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