Jump to content

Yamaha a-320 idle current


Recommended Posts

Hi guys!! Just wondering if you could please help me, I am trying to figure out idle current for my old yamaha a-320, hifiengine does not have the manual, the a-300 has different power transistors and idle current is around 20mv, the a400, which has similar transistors cobfiguration, bias at 6.5mv...??? Any help would be greatly appreciated.
Thank you!!

Link to post
Share on other sites

I managed to find a post on audiokarma which provides the idle current value, after setting, I have got to say,I am so surprised about this amp!! Super musical and dynamic! I had other yamaha natural sound amps in the past and found them rather borung, not this one. 

20201216_155036.jpg

Link to post
Share on other sites
3 hours ago, tortello77 said:

I had other yamaha natural sound amps in the past and found them rather borung, not this one.

I've spent quite a bit of time with Vintage Yamaha, CA-410, 610, 710, 700, 800,1000, 1000ii, 1010, 2010, CX-1000, CX-1, C-4 also got a C-70/M-70 to repair/refurb. OK, the C-410 is the weak link, the others sound decent depending on budget. Problem is that vintage amps from Luxman, Sansui, Marantz, Pioneer,,,, also sound decent. A boring sounding vintage amp is probably sick

Link to post
Share on other sites


1 hour ago, pete_mac said:

Nice work!!

 

For completeness of this thread for future reference... what was the bias current value? :)

Hi, around 12-13mv, the heatsink is pretty minimalistic but it isn't getting too hot

  • Like 1
Link to post
Share on other sites
19 minutes ago, mbz said:

I've spent quite a bit of time with Vintage Yamaha, CA-410, 610, 710, 700, 800,1000, 1000ii, 1010, 2010, CX-1000, CX-1, C-4 also got a C-70/M-70 to repair/refurb. OK, the C-410 is the weak link, the others sound decent depending on budget. Problem is that vintage amps from Luxman, Sansui, Marantz, Pioneer,,,, also sound decent. A boring sounding vintage amp is probably sick

Mind you, I only had lower end non-vintage models from the 90s, the sound was a bit too processed not exciting, as I mentioned lackong dynamics.  Considering it is only 30 watts, this a320 drives my pioneer fs52 (87db) to very high undistorted levels. Cheers

  • Like 1
Link to post
Share on other sites
  • Recently Browsing   0 members

    No registered users viewing this page.




×
×
  • Create New...