Terramar Audio Upgrade/Stock Specs

Jun 20, 2025
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I find myself looking for a new car unexpectedly after my current car was inexplicably written off after the slowest speed crash the world has ever seen.

The Terramar is at the top of my list, however the stock audio quality is bordering on awful and I don't want to have to wait for a factory order to spec the Sennheiser speakers. So, I'm looking for aftermarket audio upgrades.

I am an hifi fanatic, but this is my first foray into aftermarket audio beyond head units.

From the specs, all I can find is that the stock audio is 8+1 speakers. Presumably 8 speakers and a sub. The Sennheiser upgrade adds a central speaker.

Just to make a start on pricing up a full or incremental upgrade, can anyone give me the specs (size etc) of the stock speakers? I do prefer stealthy upgrades but am not averse to filing or cutting away unseen bits of plastic. I assume the stock dashboard has a pop out panel where the additional Sennheiser speaker would go, or is the speaker grille already there?

Budget wise, I'm thinking somewhere in the £800-1500 region. But I'm open to spending more over a few months and do higher quality incremental upgrades.

I found a great thread on the Formentor sub on sound dampening upgrades that I will definitely be doing along side this. All other in car audio advice and experiences welcome as always.