{ "schema_version": 1, "id": 33345, "name": "BLAM BL-100RFS (4\") Hi-efficiency 2ohm, 2-Way Component Car Audio Speakers (PAIR)", "url": "https://dev.dynamicsounds.co.uk/blam-bl-100rfs-4-hi-efficiency-2ohm-2-way-component-car-audio-speakers-pair.html", "brand": "BLAM", "model": "BL-100RFS", "sku": "BL-100RFS", "gtin": "7427307009643", "mpn": "", "identifiers": { "model": "BL-100RFS", "sku": "BL-100RFS", "ean": "7427307009643" }, "description": "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.\nThe 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.\n{ vehicle_compatibility }\nProduct Features\n2 x 100 mm (4″) woofers\n2 x 20 mm soft dome tweeters\n2 x 6 dB/octave high-pass crossovers.\nMax power 100 W\nNominal power 50 W\nFrequency response 80 Hz – 30 kHz\nSensitivity 90.3 dB\nImpedance 2 Ω\nTechnical Features\nOriginal BLAM composite basket reinforced with fiberglass\nHigh quality treated cellulose pulp membrane\nButyl rubber surround\nLong life “Conex” damper\n25 mm (1”) voice coil on Kapton former\n70 mm x 15 mm ferrite magnet\nThick magnetic circuit (4 mm)\nHigh quality 20 mm (3/4”) soft dome tweeter\n6 dB/octave high pass crossover\nTweeter level adjustable to 0 dB or attenuated to -3 dB\nTechnical Specifications\nComponent Speaker\nMax power 100 W\nNominal power 50 W\nImpedance 2 Ω\nFreq. Response 80 Hz - 15 kHz\nSensitivity (2,83V/1m) 90.3 dB\nMagnet Ferrite\nMagnet size Ø x h 70 x 15 mm 2.756‘’x 0.591‘’\nTotal driver displacement 0.11 l 0.004 cf\nWeight of one component 0.578 kg 1.274 lb\nVoice coil Ø 25 mm 0.984“\nVoice coil height 8.4 mm 0.331“\nCone Cellulose pulp\nTechnical Parameters\neffective Ø (d) 84 mm\nSd 55.42 cm²\nXmax 2 mm\nRe 2.6 Ω\nFs 109.87 Hz\nLe 97.33 µH @ 1 kHz\nL2 157.34 µH @10 kHz\nVas 1.76 L\nMms 5.16 g\nCms 0.000407 m/N\nBL 3.49 Tm\nQts 0.66\nQes 0.77\nQms 4.72\nTechnical Specifications Tweeter\nComponent Tweeter\nMax power 100 W\nNominal power 10 W\nImpedance 3 Ω\nFreq. Response 2,5 KHz - 25 KHz\nSensitivity (2,83V/1m) 90 dB\nMagnet Neodymium\nMagnet size Ø xh 18 x 3 mm 0,709\"x 0,118\"\nTotal driver displacement\nWeight of one component 0,045 kg 0,099 lb\nVoice coil Ø 20 mm 0,787\"\nVoice coil height 2 mm 0,118\"\nCone Soft\nTechnical Parameters Tweeter\neffective Ø (d) 22 mm\nSd 3,80 cm2\nXmax\nRe 3 Ω\nFs 1651 Hz\nLe\nL2\nVas\nMms\nCms\nBL\nQts\nQes\nQms\nSensitivity (dB/W/m) 86,7 dB\nSupplied Accessories\nMounting screws\nMounting accessories for tweeters\nUser manual\nDimensions\n{ note_speakers }", "category": [ "Speakers", "Speaker Upgrade Packs", "Land Rover" ], "tags": [ "Summit", "Defender", "Facelift" ], "images": [ "https://dev.dynamicsounds.co.uk/image/catalog/products/In-car-tec/BL-100RFS/BL-100RFS.jpg", "https://dev.dynamicsounds.co.uk/image/catalog/products/In-car-tec/BL-100RFS/BL-100RFS-1.jpg", "https://dev.dynamicsounds.co.uk/image/catalog/products/In-car-tec/BL-100RFS/BL-100RFS-2.jpg", "https://dev.dynamicsounds.co.uk/image/catalog/products/In-car-tec/BL-100RFS/BL-100RFS-3.jpg" ], "price": { "currency": "GBP", "amount": 139.99, "regular": 139.99, "on_sale": false, "sale_ends": null, "includes_tax": false }, "quantity_discounts": [], "availability": { "in_stock": true, "status": "in_stock", "stock_status": "", "minimum_quantity": 1 }, "attributes": [], "options": [ { "name": "Addons", "type": "checkbox", "required": false, "values": [ { "name": "Dashboard Door Panel Trim Removal Tool Kit (5 Pcs)", "price_adjustment": 12.99, "in_stock": true }, { "name": "Stinger Roadkill Application Roller", "price_adjustment": 24.99, "in_stock": true }, { "name": "Dashboard / Door Trim Removal & Precision Hook Set (9 Pcs)", "price_adjustment": 19.99, "in_stock": true }, { "name": "Dashboard Trim Tool Panel (4 Pack Assorted)", "price_adjustment": 7.99, "in_stock": true }, { "name": "Recoil PMBK Sound Deadening Sheets for 2 Doors", "price_adjustment": 19.99, "in_stock": true }, { "name": "DC 5V-90V Voltage Circuit Tester Digital Display", "price_adjustment": 14.99, "in_stock": true } ] } ], "dimensions": null, "weight": { "value": 2, "unit": "kg" }, "rating": null, "reviews": [], "shipping": { "country": "GB", "rate": 0, "currency": "GBP", "free": true, "handling_days": { "min": 0, "max": 1 }, "transit_days": { "min": 2, "max": 5 } }, "returns": { "accepted": true, "window_days": 14, "unlimited": false, "fees": "customer", "country": "GB", "policy_url": null }, "warranty": "1 Year Warranty on all items", "updated": "2026-06-30T16:54:37+01:00", "store": { "name": "Dynamic Sounds Ltd.", "url": "https://dev.dynamicsounds.co.uk/", "currency": "GBP" }, "vehicle_compatibility": { "header": "The years stated refer to the model's years of manufacture, please check the item description for information about any changes there may be within these productions years.", "count": 2, "vehicles": [ { "make": "Eagle", "model": "Summit", "years": { "from": 1992, "to": 1996, "text": "1992 - 1996" }, "product_type": "Speaker Upgrade Packs" }, { "make": "Land Rover", "model": "Defender", "years": { "from": 2007, "to": 2016, "text": "2007 - 2016" }, "product_type": "Speaker Upgrade Packs", "notes": "Facelift" } ], "product_type_description": "0" } }