Bass Blocker 4KHz @ 4 ohm eller 2KHz @ 8 ohm 6DB/OCT Driver 10PK

Popped these into my 4-ohm tweeter crossover and the 4KHz roll-off cleaned up the harshness perfectly. They’re tiny but do exactly what the specs say.

Put these on my 8-ohm mids and the vocals finally stopped getting buried under the low end. The 2KHz crossover point is exactly what I needed, and having ten in the pack means I've got spares for the next build.

Snapped these inline on my tweeters and the cymbals finally cut through instead of getting buried. The 6db/oct rolloff is gentle enough that vocals still feel full, not thin. Ten in the pack means I've got spares for the rear deck later.