{"product_id":"reflector-audio-big-stage-10-pair-radiotehnika-s-90-upgrade","title":"Reflector Audio Big Stage 10 Pair (Radiotehnika S-90 upgrade)","description":"\u003ch2\u003e🧾 Overview\u003c\/h2\u003e\n\u003cp\u003eThe Reflector Audio Big Stage 10 is a replacement acoustic front panel set designed to upgrade vintage Radiotehnika S-90 loudspeakers. It modernizes the front geometry and acoustic loading to improve clarity, dynamics, and tonal balance while keeping the classic S-90 cabinet concept. The frequency response figures below are stated as target performance for the upgraded system.\u003c\/p\u003e\n\u003ch2\u003e✅ Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e✅ Purpose-built upgrade panel set for Radiotehnika S-90 speaker restoration\/modding\u003c\/li\u003e\n\u003cli\u003e✅ Target system sensitivity: 91 dB\u003c\/li\u003e\n\u003cli\u003e✅ Target nominal impedance: 8 Ω\u003c\/li\u003e\n\u003cli\u003e✅ Target power handling: 250 W\u003c\/li\u003e\n\u003cli\u003e✅ Precisely defined cutout\/mounting geometry for cleaner installation\u003c\/li\u003e\n\u003cli\u003e✅ Target low-frequency reach down to 28 Hz\u003c\/li\u003e\n\u003cli\u003e✅ Target linearity window: 50–25,000 Hz (±3 dB)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdetails open=\"\"\u003e\n\u003csummary style=\"font-size: 1.2em; font-weight: bold; text-decoration: underline; cursor: pointer;\"\u003e📊 Technical Specifications ▼\u003c\/summary\u003e\n\u003ctable border=\"1\" cellspacing=\"0\" cellpadding=\"4\" style=\"margin-top: 10px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct type\u003c\/td\u003e\n\u003ctd\u003eSpeaker upgrade front panel (pair)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIntended speaker model\u003c\/td\u003e\n\u003ctd\u003eRadiotehnika S-90\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOuter dimensions (H×W)\u003c\/td\u003e\n\u003ctd\u003e545 × 335 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutout \/ mounting opening (H×W)\u003c\/td\u003e\n\u003ctd\u003e511 × 311 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting depth\u003c\/td\u003e\n\u003ctd\u003e25 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFront panel thickness\u003c\/td\u003e\n\u003ctd\u003e36 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal impedance (target)\u003c\/td\u003e\n\u003ctd\u003e8 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensitivity (target)\u003c\/td\u003e\n\u003ctd\u003e91 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower handling (target)\u003c\/td\u003e\n\u003ctd\u003e250 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response (target)\u003c\/td\u003e\n\u003ctd\u003e28–25,000 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency response (target, ±3 dB)\u003c\/td\u003e\n\u003ctd\u003e50–25,000 Hz (±3 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/details\u003e\n\u003ch2\u003e📦 What’s in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e📦 Big Stage 10 acoustic panels — 1 pair\u003c\/li\u003e\n\u003cli\u003e🧵 Fabric grilles — 1 pair\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e🔄 Compatibility\u003c\/h2\u003e\n\u003cp\u003eDesigned specifically for Radiotehnika S-90 cabinets as an upgrade\/rebuild front panel solution. Suitable for DIY restoration projects and for systems where you want to modernize performance while keeping the classic S-90 form factor; works with standard speaker amplifiers once the upgraded S-90 system is properly assembled and wired.\u003c\/p\u003e\n\u003ch2\u003e📦✈️ Shipping \u0026amp; Returns\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e📦 Insured worldwide delivery\u003c\/li\u003e\n\u003cli\u003e🔄 14-day return policy\u003c\/li\u003e\n\u003cli\u003e🛡️ 2-year EU warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e📝 Reviews\u003c\/h2\u003e\n\u003cp\u003e💬 “Be the first to leave a review – share your experience and help others!”\u003c\/p\u003e\n\u003ch2\u003e⚠️ Warning\u003c\/h2\u003e\n\u003cp\u003eWarning: this upgrade may cause sudden nostalgia, late-night REW measurements, and an uncontrollable urge to resurrect every “S-90” you see on classifieds.\u003c\/p\u003e\n\u003cp\u003eManual:\u003ca rel=\"noopener\" title=\"Reflector Audio Big Stage 10 Pair (Radiotehnika S-90 upgrade) Manual\" href=\"https:\/\/drive.google.com\/file\/d\/1PVZGXzRGqedqBXLqLXWFZCj61hk7l0ez\/view?usp=sharing\" target=\"_blank\"\u003e https:\/\/drive.google.com\/file\/d\/1PVZGXzRGqedqBXLqLXWFZCj61hk7l0ez\/view?usp=sharing\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/wV5279URilE?si=Xo3GMjfFgqeYoAgP\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"Reflector Audio","offers":[{"title":"Default Title","offer_id":53256461943130,"sku":null,"price":1999.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0600\/5044\/0324\/files\/Reflector-Audio-Big-Stage-10-Pair-Radiotehnika-S-90-upgrade-PremiumHIFI-audio-store.jpg?v=1770892572","url":"https:\/\/premiumhifi.lv\/de\/products\/reflector-audio-big-stage-10-pair-radiotehnika-s-90-upgrade","provider":"🟢 PremiumHIFI audio store","version":"1.0","type":"link"}