American Bass does, it is usually shown on the spec sheet that's included. Some of their product pages have a PDF download, others do not... yet. But all subs come with a spec sheet.
Because they work off coil Rms, the standard for Chinesium subs. Never mind how it reacts in the environment its supposedly going in. Compare an offering from AB to an Fi or Sa sub and likely you'll see some difference... and its more than xmax. Quality costs and AB is a consumer brand bruh.
I like some offerings by AB but have been disappointed by their claims.
Because they work off coil Rms, the standard for Chinesium subs. Never mind how it reacts in the environment its supposedly going in. Compare an offering from AB to an Fi or Sa sub and likely you'll see some difference... and its more than xmax. Quality costs and AB is a consumer brand bruh.
I like some offerings by AB but have been disappointed by their claims.