Re: Possible to blow NEW speakers?
You're probably clipping the amp. Do you have the treble way up on the HU? That could distort the signal before the amp even sees it. Stock, right? Make sure everything is flat. Stock speakers are probably more sensitive, so louder at lower wattages. And the new speakers have more detail, revealing the crappiness of the stock amp. Time for a new amp.
Running fully active with US Acoustics 4050 and 4060 Zed built amps
ID OEM 6.5" mids and Seas 27TAFNC/G aluminum tweeters
12" Dayton Titanic in 1.2 sealed powered by HS 2.125