That is correct. All these capacitors should be (kept) in good condition.
Another aspect - when you will be ordering replacement parts then do you want to put together a full list and order one package or are multiple purchases acceptable? If you want to have it i one package (to save postage costs) then you need to create a list for the whole amplifier.
Also although the common and foolproof suggestion is to replace the capacitors "like for like" then my personal preference is to replace lytics in signal path with film capacitors where reasonable. But film capacitors cost a bit more.
Also although the common and foolproof suggestion is to replace the capacitors "like for like" then my personal preference is to replace lytics in signal path with film capacitors where reasonable. But film capacitors cost a bit more.
Regarding crosstalk on speaker terminals with load - service manual shows the terminal connections like this:
If both channels share one ground (return) wire to "chassis ground" and that wire has small cross section or bad contact in its path then crosstalk can easily increase with attached load (resistors, speakers).
So it would be helpful if you would upload photos about the internal wiring of the speaker connectors.
If both channels share one ground (return) wire to "chassis ground" and that wire has small cross section or bad contact in its path then crosstalk can easily increase with attached load (resistors, speakers).
So it would be helpful if you would upload photos about the internal wiring of the speaker connectors.
Yes, exactly, there is no rush, I will slowly investigate the path, then will make list. It is for my education purpose, and you are great help, 🙏 thank you! 🙂
It also brings the idea to replace those spring loaded terminals for banana sockets. Will do some research whether it’s possible to source the same size terminal blocks, at least one of two..
Speaker terminal wiring is - fortunately a bit more reasonable than in the manual - but where are the black wires ending up?
One would expect two of them, on the photo it seems that there are four.
For banana terminal sets you can search eBay - one seller sells those for many amplifiers but unfortunately right now I do not find any of those listings.
Perhaps it was that company:
https://speaker-terminal.com/en/produkt-kategorie/akai/
One would expect two of them, on the photo it seems that there are four.
For banana terminal sets you can search eBay - one seller sells those for many amplifiers but unfortunately right now I do not find any of those listings.
Perhaps it was that company:
https://speaker-terminal.com/en/produkt-kategorie/akai/
That makes two of them. Where are the other two connected?
And how many grounding points does the chassis have?
And how many grounding points does the chassis have?
Good eye, it looks the other two wires and three from PCB - E1, E13, E15 are connected to fuse board:
The black wires from the speaker terminals are (if my interpretation of the photos is correct) connected to the "star ground" together with the big reservoir capacitors:
Since the chassis if the amplifier is grounded in multiple points then I do not see much sense in grounding the speaker terminals (again) at the connection ends.
Since the chassis if the amplifier is grounded in multiple points then I do not see much sense in grounding the speaker terminals (again) at the connection ends.