ARCHIVED FORUM -- March 2012 to February 2022READ ONLY FORUM
This is the second Archived Forum which was active between 1st March 2012 and 23rd February 2022
Hi. I have just bought cheap, a Beogram 3500, advertised as being without RIAA, seller said that the RIAA at some point had been removed.
Oh well, I bought it, and it has never been a 3500, it is a 9500, with 3500 lid and markings. It has the white line around it, and when opened, it has never had a RIAA fitted.
Not a problem, I have a BM3500 where I now have added the RIAA components to the "RIAA" board, they are "prepared" for this if one finds it funny to gather all the components and solder them on(I found it funny), so now the 3500 has built in RIAA, so I can listen to records on the 9500.
But, while assembling the RIAA module, the schematic shows datalink is on pin 6 for BG's without RIAA, and pin 7 for BG's with RIAA.
The "3500" had pin 6 moved to pin 7 for some reason, but never mind, that is back to 6.
Any good reason as to why B&O used different datalink pins ? Maybe it was to make sure that if you connected a BG with RIAA, to a BM with RIAA, that you could not by "chance" connect it and press PHONO on the remote, and start playing with double amplification of sound ?
So maybe it was a way of telling people, that the BM and BG was not compatible ?
Any other great input as to why this difference ?
/Weebyx
I looked into phono datalink pins recently, and found Peter's 29 March post in this thread: https://archivedarchivedforum2.beoworld.org/forums/p/25371/193168.aspx#193168
So it does look like a deliberate change to cater for RIAA.
Guy: I looked into phono datalink pins recently, and found Peter's 29 March post in this thread: https://archivedarchivedforum2.beoworld.org/forums/p/25371/193168.aspx#193168 So it does look like a deliberate change to cater for RIAA.
Thank you, it is still kind of funny, on the input PCB for the BM35/4500, it is only 6 or 7 that is used, the opposite of the used, is never connected to anything.
Oh well, I bet there is a very good explanation for it :) I was just curious