SKU: 48229671182

BLAM RELAX BL-100RS - 4" 2 Way Component Speakers (PAIR)

Sale price$116.10 Regular price$129.00
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

BLAM RELAX BL-100RS - 4" 2 Way Component Speakers (PAIR)Take your music experience to a new level with the 4 Inch (100mm) Relax 100 RFS speaker set from BLAM. This set brings state of the art technology and high quality sound at a low cost. The Relax 100 RFS is the latest update to the popular 100RS standalone series and offers an extended reproduction range for low and high frequencies. Thanks to its high sensitivity and two ohm voice coils, this set is ideal as an upgrade for your car. Installation is

Take your music experience to a new level with the 4 Inch (100mm) Relax 100 RFS speaker set from BLAM. This set brings state of the art technology and high quality sound at a low cost. The Relax 100 RFS is the latest update to the popular 100RS standalone series and offers an extended reproduction range for low and high frequencies. Thanks to its high sensitivity and two-ohm voice coils, this set is ideal as an upgrade for your car. Installation is easier with the new, robust composite chassis and the compact distribution filters for the tweeters.

Product Features
  • 2 x 100 mm (4″) woofers
  • 2 x 20 mm soft dome tweeters
  • 2 x 6 dB/octave high-pass crossovers.
  • Max power 100 W
  • Nominal power 50 W
  • Frequency response 80 Hz – 30 kHz
  • Sensitivity 90.3 dB
  • Impedance 2 Ω
Technical Features (Speakers)
  • Original BLAM composite basket reinforced with fiberglass
  • High quality treated cellulose pulp membrane
  • Butyl rubber surround
  • Long life “Conex” damper
  • 25 mm (1”) voice coil on Kapton former
  • 70 mm x 15 mm ferrite magnet
  • Thick magnetic circuit (4 mm)
  • High quality 20 mm (3/4”) soft dome tweeter
  • 6 dB/octave high pass crossover
  • Tweeter level adjustable to 0 dB or attenuated to -3 dB
Technical Specifications (Speakers)
  • Component Speaker
  • Max power 100 W
  • Nominal power 50 W
  • Impedance 2 Ω
  • Freq. Response 80 Hz - 15 kHz
  • Sensitivity (2,83V/1m) 90.3 dB
  • Magnet Ferrite
  • Magnet size Ø x h 70 x 15 mm 2.756‘’x 0.591‘’
  • Total driver displacement 0.11 l 0.004 cf
  • Weight of one component 0.578 kg 1.274 lb
  • Voice coil Ø 25 mm 0.984“
  • Voice coil height 8.4 mm 0.331“
  • Cone Cellulose pulp

Technical Parameters

    • effective Ø (d) 84 mm
    • Sd 55.42 cm²
    • Xmax 2 mm
    • Re 2.6 Ω
    • Fs 109.87 Hz
    • Le 97.33 µH @ 1 kHz
    • L2 157.34 µH @10 kHz
    • Vas 1.76 L
    • Mms 5.16 g
    • Cms 0.000407 m/N
    • BL 3.49 Tm
    • Qts 0.66
    • Qes 0.77
    • Qms 4.72

    Supplied Accessories

    • Mounting screws
    • Mounting accessories for tweeters
    • User manual

    Are 10cm/ 4 inch speakers good for my vehicle?

    4-inch or 10cm speakers are a compact audio solution that delivers impressive sound quality in a small package. Ideal replacements in popular smaller 3-door cars like the Vauxhall Corsa D and select Alfa Romeo, Fiat, and BMW, these lightweight speakers can easily be installed in rear doors, ensuring an unobtrusive fit. Despite their size, they produce powerful and immersive audio, making them perfect for music lovers who seek clarity without the bulk of larger equipment. Whether you're upgrading your vehicle's sound system or simply looking to reduce the size of your car audio set up, 4-inch speakers provide a remarkable audio experience that doesn’t compromise on performance.

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 48229671182

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    James E. McCampbell
    Boise, US
    ★★★★★ 5
    Has the look that they should cost more.
    Size: 11.5 Wide, Color: Dark Turquoise
    Comfortable and the fit is very comfortable. Looks great and extremely comfortable. Soft and light weight. Easy to put on. Sizing was perfect and the wide width is truly a wide. I’m coming back for more colors.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on June 1, 2026
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    Scraps
    Waukegan, US
    ★★★★★ 4
    Good at price
    Size: 9 Wide, Color: Sand
    Fit a little small at my big toe but otherwise fit well. Heel rubbed slightly first 5 hour wear but no blister.
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    Reviewed in the United States on May 9, 2026
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    Lynn
    Massapequa, US
    ★★★★★ 5
    Lightweight comfortable at a good price!
    Size: 10.5, Color: Navy
    These shoes are perfect. The color matches my navy outfits as well as my denim. They are comfortable and they look great. They are easy to pack lightweight and a great value. I am extremely satisfied and highly recommend!
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    Reviewed in the United States on June 3, 2026
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    PHOEBES
    Carnegie, US
    ★★★★★ 3
    REALLY CUTE SHOE BUT CUT WAY TOO SMALL!
    Size: 8, Color: Black Patent
    I received the black patent leather shoes today and they are so cute! Sadly I need to return them because they are cut way too small. I normally wear a 7.5 or 8 on dress shoes so I ordered the 8. They are so tight across the top that it's uncomfortable as soon as I put them on. They are smaller than a normal size 8 dress shoe. The big toe area is extremely uncomfortable because it doesn't allow any room for it at all, so my big toe just presses against the side and end of the shoe without even walking in them. I have very narrow feet and these still are too small for me. So I am returning them and I already ordered a 8.5 W and hope that will fit much better. The patent leather is very cute and adds just enough dressy that I can wear them with slacks or my Capri jeans. I like the slip on and the cushion foot bed because it feels soft.
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    Reviewed in the United States on May 26, 2026
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    Amazon Customer
    Natrona Heights, US
    ★★★★★ 5
    Love these flats!
    Size: 9 Wide, Color: Black White Faux Snake Skin, Size: 9 Wide, Color: Black White Faux Snake Skin
    One of my favorite pair of flats! I’ve had these for several years and they are still comfortable, in good shape and really add a little spice to my outfits. I can wear these all day and not have any foot pain or discomfort as a result. The quality is good, fit is perfect and I tend to have difficulty with shoes due to bunions. Love these!!
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    Reviewed in the United States on May 23, 2026

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