{
"schema_version": 1,
"id": 27205,
"name": "BMW 3 Series E90 / E91 / E92 Alpine 4'' Speaker Upgrade Kit Front or Rear",
"url": "https://www.dynamicsounds.co.uk/bmw-3-series-e90-e91-e92-alpine-4-speaker-upgrade-kit-front-or-rear.html",
"brand": "Alpine",
"model": "S2-S40 + CT25BM08 + 41-022",
"sku": "S2-S40 / CT25BM08 / 41-022",
"gtin": "7427282720571",
"mpn": "",
"identifiers": {
"model": "S2-S40 + CT25BM08 + 41-022",
"sku": "S2-S40 / CT25BM08 / 41-022",
"ean": "7427282720571"
},
"description": "Package Includes\nAlpine S2-S40 S-Series (4”) 10cm 2-Way Coaxial Car Speakers\n10cm 4\" Front or Rear Door Speaker Adaptor\nSpeaker Cable Adaptor\nS2-S40\nNewly redesigned and Hi-Res Audio Certified, the Next-Generation S-Series S2-S40 10cm (4”) Coaxial Speakers offer a new standard in entry-level sound performance.\nWe packed supreme capability into these speakers by using highly effective materials and proprietary design elements. The lightweight woofer cone, crafted from a combination of polypropylene, glass fiber, and mica materials, serves up the essential high output / low distortion sound required for High-Res Audio performance. Alpine S-Series speakers feature increased magnet sizes for more power handling and best mid-bass performance in their category.\nThe woofer's High Amplitude Multi-Roll (HAMR) surround brings out the best in bass by allowing maximum cone movement. A 2cm (3/4\") dome tweeter serves up all the high-frequency detail you've been missing with your factory speakers.\nAll speakers in the S-Series line have a wide vehicle fitment range and include several adapters and spacers. Using in-line crossovers, these speakers can be installed quick and easy even at home.\nAlpine S-Series speakers are available in coaxial and component configurations and come in a variety of different sizes, such as 20cm, 16,5cm, 13cm, 10cm, 6x9 inches and 6x8 inches.\nThe New 2023 S-Series Speaker Line\nThe S-Series sound system line truly is the Music Lover’s Starter Pack, bringing amazing sound quality, exciting bass and even Hi-Res Audio playback into the customer’s vehicle at a very affordable price point. The S-Series speakers are available in 9 different configurations.\nHi-Res Audio Certified\nUsing “trickle-down” technology, inspired design, and performance cues from the Ultra-High-Resolution AlpineF#1Status system, the Next-Generation Alpine S-Series Speakers are now Hi-Res Audio Certified and able to reproduce up to 40kHz frequency response. This new benchmark in sound quality elevates the Next-Gen S-Series Speakers resulting in a more accurate and natural sound at an entry-level price point.\nClean, Accurate Audio\nCrafted with a unique combination of Poly Propylene, Glass-Fiber, and Mica Cone materials, the S2-S40 is designed for lightweight construction, high output, and low distortion, giving you a clean and accurate audio experience.\nHAMR Surround\nAlpine-exclusive High Amplitude Multi-Roll (HAMR) surround technology is integrated into the speaker design which allows for maximum cone movement, delivering powerful and accurate bass notes.\nExtensive Mounting Options\nThe S-Series S2-S40 is compatible with most 10cm installation locations in various vehicles. The steel basket features several screw brackets for different mounting applications.\nMade for S-Series Amps & Subs\nThe S-Series speakers are designed to perfectly match the Alpine S-Series amplifier and subwoofer line for perfect system building. S-Series components are designed to for customers that want to build a great sounding system without breaking the bank, for a fun and great sounding experience including Hi-Res Audio capabilities.\nGet Hi-Res Car Audio on a Budget with the Next-Gen Alpine S-Series Speakers\nJoin Alpine Brooks as he shows off the key features and benefits of the new Hi-Res S-Series Speaker line from Alpine, highlighting the latest technologies and showing you why these speakers are the new standard in entry-level sound performance.\n00:00 - Intro\n00:33 - S-Series Overview\n01:00 - Key Features & Benefits\n04:08 - Models Offered\n04:56 - Wrap Up\nFeatures\nGeneral\nWoofer Size: 10cm (4”)\nIntegrated 2cm (¾“) Tweeters (Coaxial)\nHi-Res Audio Certified (up to 40kHz)\nPoly Propylene, Glass Fiber, and Mica Cone Material\nLightweight Design with High Output and Low Distortion\nHigh-Amplitude Multi-Roll (HAMR) Surround\nSpecifications\nPower Handling\nPeak Power: 140 Watts\nRMS Power: 55 Watts\nDimensions Woofer\nCutout Diameter: 93.6 mm\nMounting Depth: 43.0 mm\nMounting Height: 13.3 mm\nMagnet: 75.0 mm\nGeneral\nFrequency Range: 100 Hz - 40 kHz (Hi-Res Audio Certified)\nImpedance: 4 Ohms\nSensitivity: 86 dB/W\nBMW and Mini Speaker Cable Adaptor\nBMW cars Used connect the original connector in the car to a pair of aftermarket speakers.\n{ note_speakers }",
"category": [
"Speakers",
"Speaker Upgrade Packs",
"BMW",
"3 Series"
],
"tags": [
"3 Series",
"E90  E91  E92"
],
"images": [
"https://www.dynamicsounds.co.uk/image/catalog/products/Speaker/Speaker-kit/BMW/S2-S40-CT25BM08-41-022-bmw3-ser.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/Speaker/ALpine/S2-S40/S2-S40-01.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/Speaker/ALpine/S2-S40/S2-S40-02.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/Speaker/ALpine/S2-S40/S2-S40-03.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/Speaker/ALpine/S2-S40/S2-S40-04.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/Connects2/CT25/CT25BM08-new-1.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/AV-Accesories/41-022.jpg",
"https://www.dynamicsounds.co.uk/image/catalog/products/Speaker/Speaker-kit/BMW/3-series-alpine.jpg"
],
"price": {
"currency": "GBP",
"amount": 138.99,
"regular": 138.99,
"on_sale": false,
"sale_ends": null,
"includes_tax": true
},
"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 Trim Tool Panel (4 Pack Assorted)",
"price_adjustment": 7.99,
"in_stock": true
},
{
"name": "Dashboard / Door Trim Removal &  Precision Hook Set (9 Pcs)",
"price_adjustment": 19.99,
"in_stock": true
},
{
"name": "Dashboard Door Panel Trim Removal Tool Kit (5 Pcs)",
"price_adjustment": 12.99,
"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": "2026-10-13T10:55:59+00:00",
"store": {
"name": "Dynamic Sounds Ltd.",
"url": "https://www.dynamicsounds.co.uk/",
"currency": "GBP"
},
"vehicle_compatibility": {
"header": "Speaker Adaptor kits allow aftermarket standard size speakers to be fitted into the original apertures of your car audio system.",
"count": 1,
"vehicles": [
{
"make": "BMW",
"model": "3 Series",
"years": {
"from": 2005,
"to": 2012,
"text": "2005 - 2012"
},
"product_type": "Speaker Upgrade Packs",
"notes": "E90 / E91 / E92"
}
],
"product_type_description": "0"
}
}