Pioneer Japanese Schematic

Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Jump to Latest
Havenwood

Havenwood

Member
Joined 2008
Hi, I found this on the web.

A Pioneer Non Feedback Amplifier, I upload the block schematic.

From whats amplifier is this Diagram?
 

Attachments

  • pioneer_nonfb.jpg
    pioneer_nonfb.jpg
    11.8 KB · Views: 1,134
K

kenpeter

Member
Joined 2007
What are the mystery black boxen? 3way current mirror???

It would make sense both emitters of the diamond buffer
to operate at same current? And then also couple this same
current into the output... But thats just me thinking, I am no
translator. The middle leg would be the master and the other
two the copies...

I suspect the other black boxen are +4 and -4V regulators,
with a feature to be disabled (open circuit) to shut down
the entire amplifier.
 
N

Nrik

Member
Joined 2005
Where did you find it? If it's in japaneese you could google-translate is wich usually gives an understandable english from japaneese.

Anyway - i studied quite some Pioneer schematics during the years, and with input fets I would think we are in the high-end category. It could one from the "Exclusive" series, or the integrated A09, A07.

Two links to get you closer:
TVK °7 : Pioneer
HiFi Engine | Download Free User/ Service Manuals, Amplifier, Receiver, CD, Tape, Tuner, Video (requires login, but its free and there are many schematics)
 
Status
This old topic is closed. If you want to reopen this topic, contact a moderator using the "Report Post" button.
Top Bottom