REL Acoustics No.31 Reference Subwoofer
When Only the Best Will Do .hero-banner { position: relative; width: 100%; max-height: 600px; /* chiều cao tối đa */ overflow: hidden; text-align: center; /* căn giữa hình nếu khôn g chiếm full chiều ngang */ } .hero-image { max-width: 100%; /* không vượt quá khung */ height: auto; /* giữ tỷ lệ */ display: block; margin: 0 auto; /* căn giữa hình */ } .hero-text { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); color: #fff; text-align: center; } .hero-text h2 { color: #fff; font-size: 48px; font-weight: 600; text-shadow: 0 2px 8px rgba(0,0,0,0.6); margin: 0; } /* Responsive cho mobile */ @media (max-width: 768px) { .hero-text h2 { font-size: 28px; } } No.31 exists to satisfy the needs of those who crave the finest yet have space limitations. Whilst some can afford our flagship No.32 model, it is larger and deeper than some rooms can accommodate. How can you best deliver No.32’s sound quality, build quality, and thoughtful features with a more compact footprint? Enter No.31. .product-description { max-width: 900px; /* Giới hạn chiều rộng để dễ đọc */ margin: 40px auto; /* Tự động căn giữa */ font-family: "Georgia", serif; color: #333; line-height: 1.8; padding: 0 20px; text-align: left; } .product-description h2 { font-size: 32px; font-weight: 600; margin-bottom: 20px; color: #111; } .product-description p { font-size: 18px; margin-bottom: 20px; } .fullwidth-banner { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-banner h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } DESIGN .custom-fullwidth-section { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1400px; /* Giới hạn chiều rộng nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; } .custom-fullwidth-section .image-side { flex: 1; text-align: center; } .custom-fullwidth-section .image-side img { max-width: 100%; height: auto; border-radius: 4px; } .custom-fullwidth-section .text-side { flex: 1; padding-left: 40px; } .custom-fullwidth-section .text-side h2 { font-size: 28px; font-weight: 600; margin-bottom: 20px; } .custom-fullwidth-section .text-side p { font-size: 16px; line-height: 1.6; color: #444; } /* Responsive */ @media (max-width: 992px) { .custom-fullwidth-section { flex-direction: column; text-align: center; } .custom-fullwidth-section .text-side { padding-left: 0; margin-top: 30px; } } Perfection Repeated No.31 matches No.32’s design stroke for stroke, yet somehow it manages to look more svelte, crouching closer to the floor—almost feline in its grace. The elegant plated handles inset into an ellipse is retained, as is the string grille that permits vast amounts of air to explode into your room without creating noise like cloth grilles can. No.31 features the curvilinear radius to the sidewalls that define both its performance and its character. But the reduction in visual and actual three-dimensional physical mass is remarkable. No.31: when the best must be delivered in a smaller space. .fullwidth-banner1 { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-banner1 h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } DRIVER .custom-fullwidth-section1 { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1400px; /* Giới hạn chiều rộng nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; } .custom-fullwidth-section1 .image-side { flex: 1; text-align: center; } .custom-fullwidth-section1 .image-side img { max-width: 100%; height: auto; border-radius: 4px; } .custom-fullwidth-section1 .text-side { flex: 1; padding-left: 40px; } .custom-fullwidth-section1 .text-side h2 { font-size: 28px; font-weight: 600; margin-bottom: 20px; } .custom-fullwidth-section1 .text-side p { font-size: 16px; line-height: 1.6; color: #444; } /* Responsive */ @media (max-width: 992px) { .custom-fullwidth-section1 { flex-direction: column; text-align: center; } .custom-fullwidth-section1 .text-side { padding-left: 0; margin-top: 30px; } } Drive This The incredible excursion of the 12” pure carbon fibre driver allows it to play as loud as its larger stablemate. Yet, the No.31 possesses the tactility, nimbleness, and attack that only the greatest subwoofers have ever been able to deliver. Also, its sonic signature works in modestly-scaled rooms and with a vast range of fine speakers. The driver is accelerated by a specially wound 3” voice coil driven by a 13-pound magnetic structure; even near its limits, the voice coil remains solidly inside the gap. It is this visceral power, coupled with great delicacy and nuance, that is No.31’s signature. .fullwidth-banner2 { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-banner2 h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } AMPLIFIER .custom-fullwidth-section2 { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1400px; /* Giới hạn chiều rộng nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; } .custom-fullwidth-section2 .image-side { flex: 1; text-align: center; } .custom-fullwidth-section2 .image-side img { max-width: 100%; height: auto; border-radius: 4px; } .custom-fullwidth-section2 .text-side { flex: 1; padding-left: 40px; } .custom-fullwidth-section2 .text-side h2 { font-size: 28px; font-weight: 600; margin-bottom: 20px; } .custom-fullwidth-section2 .text-side p { font-size: 16px; line-height: 1.6; color: #444; } /* Responsive */ @media (max-width: 992px) { .custom-fullwidth-section2 { flex-direction: column; text-align: center; } .custom-fullwidth-section2 .text-side { padding-left: 0; margin-top: 30px; } } Amplified Perfection No.32’s NextGen 7 Class D 1,000 watt amplifier also lives inside No.31, only limited to 900 watts to ensure the perfect complement to the 12” bass engine within No.31. This allows the maximum dynamics to be delivered while ensuring a long, cheerful life for both components. Here too, the LimitLess Limiter,™ which permits the amplifier to tiptoe right up to its limit without audible compression is part of the magic, conveys a rhythmically effortless quality. Also, its dual parametric filters allow precise micro-tuning; the deepest bass is slightly reinforced, while the upper ranges of bass can be gently trimmed to ensure a brilliantly rendered transition from bass to the main speaker. The electronic design of the reference range is itself artistry. .fullwidth-banner3 { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-banner3 h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } LINE ARRAY .custom-fullwidth-section3 { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1400px; /* Giới hạn chiều rộng nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; } .custom-fullwidth-section3 .image-side { flex: 1; text-align: center; } .custom-fullwidth-section3 .image-side img { max-width: 100%; height: auto; border-radius: 4px; } .custom-fullwidth-section3 .text-side { flex: 1; padding-left: 40px; } .custom-fullwidth-section3 .text-side h2 { font-size: 28px; font-weight: 600; margin-bottom: 20px; } .custom-fullwidth-section3 .text-side p { font-size: 16px; line-height: 1.6; color: #444; } /* Responsive */ @media (max-width: 992px) { .custom-fullwidth-section3 { flex-direction: column; text-align: center; } .custom-fullwidth-section3 .text-side { padding-left: 0; margin-top: 30px; } } Arrayed for Battle No.31 permits the same vertically stacked line array as the ultimate No.32. It delivers transformative performance that no competitor has been able to. For those who have been seeking the ultimate musical and theatre experience, Line Arrays unlock the final dimension of system reproduction. Audiophiles have chased three-dimensional sound for years, yet they have missed the simple fact that the height—not the depth—of image is the missing link. By creating products that are designed to be stacked 3 (or in exceptionally tall rooms, 5) units high while retaining individual crossover and gain control of each subwoofer in the array, REL has created a masterpiece that finally delivers what the most experienced audiophiles have been chasing for the past 40 years. .fullwidth-bannera { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-bannera h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } REMOTE .custom-fullwidth-sectiona { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1400px; /* Giới hạn chiều rộng nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; } .custom-fullwidth-sectiona .image-side { flex: 1; text-align: center; } .custom-fullwidth-sectiona .image-side img { max-width: 100%; height: auto; border-radius: 4px; } .custom-fullwidth-sectiona .text-side { flex: 1; padding-left: 40px; } .custom-fullwidth-sectiona .text-side h2 { font-size: 28px; font-weight: 600; margin-bottom: 20px; } .custom-fullwidth-sectiona .text-side p { font-size: 16px; line-height: 1.6; color: #444; } /* Responsive */ @media (max-width: 992px) { .custom-fullwidth-sectiona { flex-direction: column; text-align: center; } .custom-fullwidth-sectiona .text-side { padding-left: 0; margin-top: 30px; } } A Remote Like No Other Take control of your No.32 by grasping the REL Reference Remote Control. Immediately, you will be struck by the perfect fit in your palm, the result of careful thought and numerous generations of trial-and-error fittings during prototype development. The second reaction to it is the awareness of its mass, which conveys its quality, permanence, and immutability. It tells you, “I am a thing of substance, of quality. Pay attention, what you do next matters.” If you have owned a REL in the past (and fully 90% of Rel Reference owners are), all the familiar controls are right at hand, exactly where you’d want them. High (or low if using active speakers) level gain sits comfortably to the right side, the crossover rests in the middle, and .1/LFE gain is off to the left. Below are three lovely metal toggle switches handle the critical setup functions. The remote’s on/off switch is at the bottom. It is both as out of the way as possible and remains on once turned on and in use during setup without being accidentally turned off. In the middle sits the phase control. This is used only initially to determine the correct 0 or 180 degrees of phase. Additionally, the top access to the Dual Parametric EQ-marked with A and B—permits the flattest, deepest bass and, at the other end of the bass frequencies, the fine-tuning of crossover behavior. This gives you the perfect blending of subwoofer to main speakers and any vestiges of room-generated boom and resonance can be gently trimmed away. REL’s Reference Remote reminds you of the perfect butler—always immaculate, indispensable when called upon, then quietly set aside until a future time when perhaps additions or further improvements to one’s system further require its services. .fullwidth-bannerb { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-bannerb h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } SPECIFICATIONS .specs-section { width: 100%; max-width: 1400px; /* giới hạn nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; font-family: Arial, sans-serif; color: #222; } .specs-section h2 { font-size: 22px; font-weight: 600; margin-bottom: 30px; } .specs-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 30px 40px; } .spec-item h3 { text-align: left; font-size: 15px; font-weight: 600; margin-bottom: 8px; } .spec-item p { font-size: 15px; line-height: 1.5; color: #444; margin: 0; } Technical Specifications Type Closed box, front-firing driver Active Driver Size & Material 12 in. (300mm) long throw, carbon fiber cone with inverted carbon fibre centre cap, die cast alloy chassis Passive Radiator Size & Material N/A Low Frequency Extension 17Hz at -6 dB Low Frequency Input Connectors High Level Neutrik Speakon, Low Level (2) RCA, (1) LFE RCA, (1) LFE XLR Output Connectors High Level Neutrik Speakon, (1) Low Level RCA, (1) LFE XLR, (1) Line XLR Power Output 900 watts (RMS) Amplifier Type NextGen 7 Class D Wireless Capability REL AirShip II (sold separately) Dual Parametric Filter Yes Finish Piano Black Lacquer, 12 coats Fully Electronic Set Safe Yes D.C. Fault Yes Output Short Yes Mains Input Voltage 220-240 volts, 1120-120 volts for certain markets Fuses 7 Amp semi delay 230 volts operation, 15 Amp semi delay 115 volts operation Mains Lead Yes Neutrik Speakon Yes (10 Meters Nominal) Interconnect - User Manual Yes .fullwidth-banner4 { width: 100%; background-color: #1c1c1c; /* màu nền đen */ text-align: center; padding: 20px 0; } .fullwidth-banner4 h2 { color: #ffffff; /* chữ màu trắng */ font-size: 24px; font-weight: 500; margin: 0; } DIMENSIONS .custom-fullwidth-section4 { display: flex; align-items: center; justify-content: center; width: 100%; max-width: 1400px; /* Giới hạn chiều rộng nội dung */ margin: 0 auto; padding: 60px 20px; box-sizing: border-box; } .custom-fullwidth-section4 .image-side { flex: 1; text-align: center; } .custom-fullwidth-section4 .image-side img { max-width: 100%; height: auto; border-radius: 4px; } .custom-fullwidth-section4 .text-side { flex: 1; padding-left: 40px; } .custom-fullwidth-section4 .text-side h2 { font-size: 28px; font-weight: 600; margin-bottom: 20px; } .custom-fullwidth-section4 .text-side p { font-size: 16px; line-height: 1.6; color: #444; } /* Responsive */ @media (max-width: 992px) { .custom-fullwidth-section4 { flex-direction: column; text-align: center; } .custom-fullwidth-section4 .text-side { padding-left: 0; margin-top: 30px; } } DIMS W x H x D 25 1/8 x 17 x 28 1/2 in (638 x 435 x 720 mm) Net Weight 114.5 lbs (52kg), shipping weight - 156 lbs (71kg) .reviews-section { width: 100%; max-width: 1400px; margin: 0 auto; padding: 60px 20px; font-family: Arial, sans-serif; text-align: center; } .reviews-section h2 { font-size: 28px; font-weight: 600; margin-bottom: 40px; } .reviews-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; } .review-card { background: #fafafa; padding: 30px 20px; border-radius: 8px; text-align: left; box-shadow: 0 2px 6px rgba(0,0,0,0.05); } .review-card img { max-width: 100px; height: auto; margin-bottom: 15px; } .review-card h3 { font-size: 15px; font-weight: 600; margin-bottom: 15px; text-transform: uppercase; } .review-card p { font-size: 15px; line-height: 1.6; color: #333; margin-bottom: 15px; } .review-card strong { font-weight: 600; } .review-card a { font-size: 14px; color: #000; text-decoration: underline; } .review-card a:hover { color: #666; } Awards & Industry Reviews TONE AUDIO "The No.31 is faster, more nimble. If you only think of the low-frequency augmentation provided by a subwoofer as a single sonic shade, be prepared to have your paradigm reset." -TONE AUDIO Read Article 2022 AWARD ""To say I was impressed by the REL No 31 is an understatement, but curiously the No 31 is all about understatement. Sure, it can move a lot of air when called upon, but it's at its best when making great loudspeakers sound so much better than you might expect. For all its size and weight and power, the No 31 is a truly..." - HI-FI+ Read Article BEST BUY ""REL's No.31 lives up to its Reference moniker, delivering premium LFE slam and speed alongside unrivalled bass detail that enhances the entire soundfield."" HOME CINEMA CHOICE Read Article .product-hero img { width: 100%; margin-bottom: 0px; } .product-showcase { display: flex; width: 100%; max-width: 100%; margin: 0 auto; font-family: Arial, sans-serif; } .product-box { flex: 1; position: relative; overflow: hidden; } .product-box img { width: 100%; height: 100%; object-fit: cover; display: block; } .product-overlay { position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.55); /* lớp mờ */ display: flex; justify-content: center; align-items: center; text-align: center; padding: 20px; } .product-overlay p { color: #fff; font-size: 18px; line-height: 1.6; max-width: 90%; } No.31 is nothing less than a pure reference model, sculpted from the flanks of the remarkable No.32, but using a newly developed 12" (350mm) all carbon fiber driver. Every facet of No.31 has been comprehensively upgraded and refined from its predecessor. No.31 delivers the classic Reference filter used in No.32, the same dual parametric filters, a driver that handles three times the power to deliver a truly thrilling experience. What's in the box Reference No 31 Subwoofer Grille 6' AC Power Cord 32' Neutrik Speakon cable User Manual & Warranty Information Reference Remote Batteries (AAA x2) Line Array Mounting Hardware Download User Manual .product-box-section { width: 100%; background-color: #f9f8f6; padding: 40px 0; display: flex; justify-content: center; } .product-box-container { display: flex; align-items: center; max-width: 1200px; width: 100%; padding: 20px; border-radius: 10px; background: #f9f8f6; } .product-box-image { flex: 1; display: flex; justify-content: center; } .product-box-image img { max-width: 100%; height: auto; border-radius: 8px; } .product-box-content { flex: 1; padding: 20px 40px; } .product-box-content h2 { font-size: 28px; margin-bottom: 20px; } .product-box-content ul { list-style: disc; padding-left: 20px; margin-bottom: 20px; font-size: 16px; } .download-btn { display: inline-block; padding: 10px 20px; background-color: #fff; border: 1px solid #ccc; border-radius: 20px; text-decoration: none; font-size: 14px; font-weight: bold; color: #000; transition: all 0.3s ease; } .download-btn:hover { background-color: #000; color: #fff; } .comparison-section { width: 100%; max-width: 1400px; margin: 0 auto; padding: 60px 20px; font-family: Arial, sans-serif; text-align: center; } .comparison-section h2 { font-size: 28px; font-weight: 600; margin-bottom: 10px; } .comparison-section p.subtext { font-size: 16px; color: #555; margin-bottom: 40px; } .comparison-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; } .comparison-card { border: 1px solid #ddd; border-radius: 8px; padding: 30px 20px; background: #fff; box-shadow: 0 2px 6px rgba(0,0,0,0.05); } .comparison-card img { max-width: 100%; height: auto; margin-bottom: 20px; } .comparison-card h4 { font-size: 13px; font-weight: 500; letter-spacing: 2px; margin-bottom: 8px; color: #666; } .comparison-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 15px; } .comparison-card p { font-size: 15px; line-height: 1.6; color: #333; margin-bottom: 10px; } The Right REL for You Specifications will never tell the whole story behind one of our subwoofers, but they can help to clarify the technical difference between them. REFERENCE SERIES No.32 W x H x D29 1/4 x 21 x 32 1/8 in.(743 x 540 x 816 mm) 1,000 watts (RMS) NextGen 7 Class DN/A 15Hz at -6 dB Low Frequency REFERENCE SERIES No.31 W x H x D25 1/8 x 17 x 28 1/2 in(638 x 435 x 720 mm) 900 watts (RMS) NextGen 7 Class D N/A 17Hz at -6 dB Low Frequency SERIE S Carbon Special W x H x D17 x 18 x 21.25 in.(430 x 455 x 539 mm) 800 watts (RMS). Up to 1,000 watts (RMS) NextGen 5 Class D 12 in. (300mm), Carbon/Carbon flat cone structure, steel chassis -6 dB at 19Hz Low Frequency (in Room)
