Will these work on 4 inch speakers?

Yes, these bass blockers can be used to protect your 4" speakers as well. The BB-35 blocks frequency under 2800Hz for 4Ohm speaker, The BB-4 blocks frequency under 1200Hz for 4Ohm speaker.

How muh does it block on 1 ohm ?

Following quick and dirty math, the frequency doubles at 2 ohm (0-600 hz). That would make 1 ohm frequency blocking 0-1200 hz.

Will these fit in the upper dash of a Wrangler JL for the tweeters?

Yes, these bass blockers are super small and compact, they should fit into the upper dash of Wrangler.

I have 4 ohms tweeters, how will it sound with these 4 ohms blockers?

All it will do is drop off the lower frequencies (which tweeters can't play anyway). Your highs will play through perfectly.

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🎵 Protect your sound, amplify your drive.

POWER READY DESIGN - Supports up to 50 watts, ensuring your audio system performs without compromise or distortion.
COMPACT LIGHTWEIGHT - At just 30 grams, these blocks fit seamlessly into your car audio setup without bulk or weight.
EFFORTLESS INSTALLATION - Red color-coded leads and wire encasement make setup quick and foolproof—no tech headaches here.
TWEETER PERFORMANCE BOOSTER - Enhances tweeter clarity by removing frequencies beyond their range, delivering crisp, clean highs.
PRECISION FREQUENCY BLOCKING - Safeguards your 3.5” car speakers by filtering out damaging low frequencies up to 2800Hz at 4 ohms.

The RECOIL BB-35 Bass Blocks are engineered to protect 3.5-inch car audio speakers by blocking harmful frequencies from 0 to 2800 Hz at 4 ohms. With a power handling capacity of up to 50 watts and easy-to-install red-coded leads, these compact components enhance tweeter performance and ensure your car audio system delivers clear, distortion-free sound.

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TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

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Fantastic experience overall. Will recommend to friends and family.

1 month ago

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Speaker Type	Tweeter
Recommended Uses For Product	car
Compatible Devices	Car Audio System
Net Quantity	1 count
Surround Sound Channel Configuration	1.0
Item Weight	0.03 Kilograms
Impedance	4 Ohm
Is Waterproof	FALSE
Control Method	Touch
Speaker Size	3.5 Inches
Power Source	Corded Electric
Brand Name	RECOIL
Item model number	BBC
Manufacturer	RECOIL
Item Weight	30 g

RECOIL BB-35 Bass Blocks Designed to Protect Car Audio 3.5 Inch Speakers, Eliminate Frequencies 0-2.8kHz at 4Ohms, Pair

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