SACD Question - Do some Sacds Play Only Through The Two Fron Speakers?

Hi,

Sorry for being a bit off topic but I don't know where else to post
this.

I bought Bob Dylan's 'Blonde on Blonde' in SACD(not a hybrid) format.

When I pop it in my SACD player(I've tried two), the SACD light lights
up but it only plays through the two front speakers. My multi channel
light does not come on which does on all the other SACDs I have.

Is this defective or are some SACDs just two channels?

I tried it in a regular CD player and it wouldn't recognize the disc
at all.

Thanks for any advice.

T