Buyer beware morel speakers.

[mpeugeot]

I would get one that blocks everything below 600hz (specific part# varies based on speaker impedance - for a 4 ohm https://www.crutchfield.com/p_007BB600/Crutchfield-Bass-Blockers-600-Hz-cut-off.html). However, if you're using the factory amp with the factory front wiring where the kick panel and dash speakers are wired in parallel, you're actually turning the dash speakers into 2 ohm speakers. If you are using an amp and the dash speakers are on their own channel you can just set your high-pass filter on the amp to around 600hz. Either way the goal is to block the 4" cone from receiving the lower frequency signals that it can't physically produce.

I run the Morel Maximo Ultra Coax 402 Mk II speakers without bass blockers, because with 75 - 20k Hz frequency response, they really don't need base blockers. I am pretty sure that on the B&O system the DSP cuts at just under 200 Hz. If you are using an amp with a built in crossover (like the Key Kicker 200.4) setting it for 80 or 120 Hz would do the trick.

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[PghBronco]

Back to the blockers, I called them yesterday and the guy told me the Maximo did not need blockers. So i asked about putting them in the kickers i just got. Their R&D team said i did not need them. When i asked how i could have ruined two sets of morels he was stumped. I also said if i wanted to put a 150 Mhz blocker in. Anything over that would just make the speaker have absolutely no bass and hardly any mid (horrible sound).

I think that im going to do is just be stupid and if these poop out on me, i'll exchange then buy the blocker cuz i can definitively say it would be the lack of blockers that caused this issue on 2 different brands.