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manxam 5th January 2004 02:19 AM

Nakamichi OMS-2 modification questions...
OK, so I'm new to the whole audio modifying thing but i'm fairly decent with electronics on a whole. I have an old Nakamichi OMS-2 (circa 1988) that I don't mind screwing up so I was wondering if there is anything I can do to this thing to modernize it.

Anyone have any schematics or know of anything that can be changed internally to make it a decent CD player for this day and age?

Any insight would be appreciated.

Thanks :)

martijn 5th January 2004 09:24 PM

Hi manxam,

is it equipped with BB PCM56dacs?


manxam 7th January 2004 12:07 AM

Martijn, it appears it's a BB PCM54HP DAC

No upgrade for me? :P


rfbrw 7th January 2004 12:23 AM

Parallel input dac:eek: depending how much work you want to put in and/or the digital filter you should be able to do something.
What digital filter does it use?

martijn 7th January 2004 12:25 AM

is there only one dac?


manxam 7th January 2004 11:03 PM

It appears so Martijn. There is only the one BB chip on the board and i don't recognize the markings on the other chips.

martijn 7th January 2004 11:47 PM

Hi manxam,

your OMS2 has a digital interface, between filter and dac, which I am not familiar with.So I can not help you regarding upgrading.
By the way, the pcm54 has 1 converter for 2 channels.....
Sorry.Perhaps someone else can help.


rfbrw 8th January 2004 12:42 AM

In the early days of cd audio one dac was often shared between channels. Can you list the markings on the other chips?

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