SKU: 48229671182

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

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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]
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    SKU: 48229671182

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    Kristin Hegler
    Cuba, US
    ★★★★★ 5
    Great Reference
    Format: Paperback
    This is an excellent, concise book with easy-to-read excerpts and diagrams that we are keeping as a reference guide for our Search and Rescue Team, some of whom are Wilderness First Responders but sometimes need additional information.
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    Reviewed in the United States on February 15, 2022
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    Amazon Customer
    Port Orchard, US
    ★★★★★ 3
    As advertised, Good Price.
    Format: Paperback
    As advertised. Good price.
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    Reviewed in the United States on April 5, 2025
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    jamiem
    Phoenix, US
    ★★★★★ 5
    A must-read for OBE enthusiasts
    Format: Paperback
    Projection of the Astral Body I recently read The Projection of the Astral Body by Sylvan Muldoon and Hereward Carrington, and it’s a captivating classic! Published in 1929, Muldoon’s firsthand accounts of out-of-body experiences (OBEs) are vivid and pragmatic, detailing his involuntary projections from age 12 and experiments thereafter. His explanations of the astral cord, travel sensations, and the hypnagogic state are clear, avoiding excessive mysticism. Carrington’s scientific editing adds credibility. My only critique: the dated language can be dense, and the small font in some editions strains the eyes. A must-read for OBE enthusiasts
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    Reviewed in the United States on August 8, 2025
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    James G. Burton III
    Bozeman, US
    ★★★★★ 5
    Basic Fundamentals of Astral Projection
    Format: Paperback
    This book is full of great information about Astral Projection that is presented in a straightforward manner. I have read many books and articles about this subject over the past 10 years. Many are full of scraps of insight that are glued together with abundant amounts of repetition and babble. Mr. Sylvan Muldoon, like many of the great occultists from the early 20th century, has created a work that will refresh the weary, "would-be" traveler by keeping his explanations short and concise. His theory on the astral body being ruled by the subconscious conveys why auto-suggestion is extremely important when attempting separation. He provides the traditional method of maintaining the hypnagogic state via the raised forearm of which Robert Monroe echoes in his own exercises 40 years later. His "Dream True" method is unique to any of the techniques that I have read about in the past. I cannot recommend this book enough for anyone who is attempting the art of Astral Projection.
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    Reviewed in the United States on June 1, 2013
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    Austin Farmer
    San Leandro, US
    ★★★★★ 5
    Good book, quite through
    This was quite an in depth analysis on the subject which the author writes from his own experiences, and it seems quite obvious that he is not making any of it up. His explanations can be tedious at times, but this is in an effort to present the information as scientifically as possible, trying to answer any and all doubts and questions that would arise to the skeptical minded person. If you are interested in astral projection, I have never read a more revealing book on the subject.
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    Reviewed in the United States on January 4, 2016

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