acreature Report post Posted November 30, 2021 2019 ST w/ B&O The tweeters aren't bright enough for me and I am going to upgrade. My question is about the stock system having it's own signal processing for the 12 channels and the need or not to install the blocker that comes with the upgrades (Hertz) or will the factory B&O already have that handled for the upper front door tweeter wiring? Thanks Share this post Link to post Share on other sites
SC_ST Report post Posted January 8, 2022 Any luck on this? Share this post Link to post Share on other sites
acreature Report post Posted January 10, 2022 Ended up replacing the stock tweets w/ a pair of Infinity Reference REF-375TX. Definitely not as loud as stock, but much MUCH cleaner. Used the blockers that came with the IR tweets. The stock tweets have built in blockers and the frequency difference really cleaned it up. 1 Share this post Link to post Share on other sites
