Help with speaker formatting

[BuggsBunny]

I just bought a Lexus with the 21 speaker Pioneer audio system, but I can only find 10 speakers. Kinda confused with its exact placements. Starting to wonder if some were left out, maybe due to the chip shortage. Any idea?

 

[ProjectStriga]

The 21-speaker system includes hidden tweeters and subwoofers, some speakers are built into door pillars, rear decks, or under seats, so you might not see them all easily

 

[BuggsBunny]

The 21-speaker system includes hidden tweeters and subwoofers, some speakers are built into door pillars, rear decks, or under seats, so you might not see them all easily

Oh, so subwoofers also count as 1?