{"product_id":"monitor-audio-radius-3-4g-bookshelf-speakers","title":"Monitor Audio Radius 3 4G Bookshelf Speakers","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003ctitle\u003eMonitor Audio Radius 3 4G Bookshelf Speakers — Product Description\u003c\/title\u003e\n\n\n\u003cdiv style=\"max-width:720px;margin:0 auto;padding:32px 24px 48px 24px;background:#ffffff;\"\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:0 0 0.35em 0;font-weight:600;\"\u003eA Mini-Monitor With Full-Size Ambitions\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eSmall speakers usually ask you to give something up. The Monitor Audio Radius 3 4G asks for less than most. It is a two-way standmount measuring 255 x 150 x 201 mm, about 10 by 5.9 by 7.9 inches, weighing 3.7 kg each.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe Radius line has run since 2004, and this fourth generation arrived in June 2026. The Radius 3 is the larger of the two standmounts, above the cube-shaped Radius 1 4G. Inside is a 4.5-inch C-CAM RST III bass-mid driver and a 25 mm C-CAM Gold Dome tweeter, crossing at 2.7 kHz. In-room response runs from 44 Hz to 35 kHz, and maximum peak SPL is 107 dB. Finishes are high gloss black and satin white, sold as a pair.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eRST III Cones, a Vented Gold Dome, and a Bigger Port\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eC-CAM is Ceramic-Coated Aluminium\/Magnesium, Monitor Audio’s cone material for decades. The fourth generation adds RST III cone geometry, a ribbed surface that pushes breakup further out of the audible band, plus a new magnet, an improved voice coil and better venting.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe tweeter was rebuilt around an external magnet motor rather than the usual internal puck magnet, and the dome is fully vented. A UD waveguide keeps dispersion even, which is why these hold a soundstage off-axis. Cabinet walls are thick for the size, and through-bolt bracing ties both drivers to the rear panel.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eBass comes from a rear HiVe II port tuned to 53 Hz, which Monitor Audio says is 50 percent larger than the previous generation’s.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhat Reviewers Are Saying\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eDavid Price reviewed the Radius 3 4G for \u003cem\u003eStereoNET\u003c\/em\u003e on 15 June 2026, scoring it 8.5 out of 10 with an Applause Award. His verdict: \"Clearly the best of Monitor Audio’s long line of small speakers so far.\" He praised the stereo imaging and the way the speaker holds together at volume.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHe was candid about the limits. The deepest bass is essentially absent, and he does not rate it as the last word in neutrality at this price, noting that Monitor Audio’s larger Bronze models dig deeper. He also tried the supplied foam port plug: fitted, bass is tauter but there is less of it.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWho Is This Bookshelf Speaker Best For?\u003c\/h2\u003e\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall rooms and apartments\u003c\/strong\u003e — A cabinet this size disappears where a floorstander dominates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesktop and near-field listeners\u003c\/strong\u003e — Even dispersion and a tight cabinet suit close listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurround and height channels\u003c\/strong\u003e — Wall, stand or shelf mounting makes them easy to place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone building around an existing amp\u003c\/strong\u003e — Monitor Audio asks 40 to 75 W into 8 ohms, which most integrateds cover.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot right if you want deep bass without a subwoofer\u003c\/strong\u003e — Response stops at 44 Hz. With floor space to spare and no sub, see our \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/speakers\/floorstanding-speakers\/\" style=\"color:#8a5a2b;\"\u003efloorstanding speakers\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eHow Does It Connect to Your System?\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThese are passive speakers, so any stereo amplifier or AV receiver will drive them. Nominal impedance is 8 ohms, with a minimum of 4 ohms at 250 Hz. Give them real power and they open up.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003ePlacement matters because the port fires backward. Close to a wall you get more bass and less control; pull them out and the low end tightens. Aim for tweeters at seated ear height, toe in slightly, then move an inch at a time until the center image locks.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003ePairs Well With\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eHere is what usually goes around them.\u003c\/p\u003e\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated amplifiers\u003c\/strong\u003e — At 84 dB sensitivity, a capable amp matters more than usual. See our \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/amplifiers-preamplifiers\/integrated-amplifiers\/\" style=\"color:#8a5a2b;\"\u003eintegrated amplifiers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubwoofers\u003c\/strong\u003e — The partner if you want the bottom octave back. Browse our \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/subwoofers\/subwoofers\/\" style=\"color:#8a5a2b;\"\u003esubwoofers\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker stands\u003c\/strong\u003e — Height is the cheapest improvement you can make. See our \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/furniture\/speaker-stands\/\" style=\"color:#8a5a2b;\"\u003espeaker stands\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeaker cables\u003c\/strong\u003e — Measure the run, then buy once. Shop \u003ca href=\"https:\/\/www.audioadvisor.com\/products\/%%GLOBAL_ShopPathSSL%%\/cables\/speaker-cables\/\" style=\"color:#8a5a2b;\"\u003espeaker cables\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eAre the Radius 3 4G sold as a pair?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eYes. Each speaker weighs 3.7 kg, about 8 pounds.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow much amplifier power do they need?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eMonitor Audio recommends 40 to 75 W into 8 ohms. Continuous handling is 75 W and sensitivity is 84 dB, so err toward more power.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eCan they be wall mounted?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eYes, with Monitor Audio’s FIX-M bracket, sold separately. The Radius Floor Stand 4G and Desk Pad 4G also fit.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eDo I need a subwoofer?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eFor music in a small room, often not. For films, add one. Monitor Audio recommends a subwoofer for full-range performance.\u003c\/p\u003e\n\n\u003ch3 style=\"font-size:1.05em;margin:0.9em 0 0.25em 0;font-weight:600;\"\u003eHow close to a wall can they go?\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eThe port fires backward, so leave breathing room. Closer means more bass but less control.\u003c\/p\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eSee It in Action\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eMonitor Audio’s channel introduces the whole Radius Series 4G, Radius 3 included.\u003c\/p\u003e\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/hrlPvGJDWoU\" title=\"Radius Series 4G | Monitor Audio\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\u003cp style=\"margin:0 0 0.5em 0;line-height:1.55;\"\u003eMonitor Audio also unboxes the Radius Series 4G, carton by carton.\u003c\/p\u003e\n\u003ciframe width=\"100%\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/xCxJwYzm_kk\" title=\"Unboxing the NEW Radius Series 4G speakers | Monitor Audio\" style=\"border:0;margin:0 0 0.9em 0;display:block;\" allowfullscreen\u003e\u003c\/iframe\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eWhy Audio Advisor?\u003c\/h2\u003e\n\u003cul style=\"margin:0 0 0.9em 0;padding-left:1.4em;line-height:1.6;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e40+ Years of Expertise\u003c\/strong\u003e — Since 1981, we’ve helped over a million music lovers find the right gear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e60-Day Money-Back Guarantee\u003c\/strong\u003e — Take your time. Listen, enjoy, and make sure it’s right for you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReal Experts, Real Help\u003c\/strong\u003e — Our team is here to answer your questions at 800-942-0220, weekdays 9am–6pm EST.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree Shipping\u003c\/strong\u003e — On orders over $49, delivered to your door.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Payment Options\u003c\/strong\u003e — Financing available so you can start listening now.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"font-size:1.25em;margin:1.4em 0 0.35em 0;font-weight:600;\"\u003eLearn More\u003c\/h2\u003e\n\u003cp style=\"margin:0 0 0.9em 0;line-height:1.55;\"\u003eWant to learn more about speaker placement, amplifier matching, or adding a subwoofer? Visit our \u003ca href=\"https:\/\/learningcenter.audioadvisor.com\/\" style=\"color:#8a5a2b;\"\u003eLearning Center\u003c\/a\u003e for guides, tips, and expert advice.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/body\u003e","brand":"Monitor Audio","offers":[{"title":"New \/ Black \/ Pair","offer_id":47539363479725,"sku":"NEW-MRRAD34G-BLK-PR","price":799.0,"currency_code":"USD","in_stock":true},{"title":"New \/ Satin White \/ Pair","offer_id":47539363512493,"sku":"NEW-MRRAD34G-SATWHT-PR","price":799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/MRRAD34G-BLK_1.jpg?v=1790004740","url":"https:\/\/www.audioadvisor.com\/products\/monitor-audio-radius-3-4g-bookshelf-speakers","provider":"Audio Advisor","version":"1.0","type":"link"}