Online Guides. Such setups require careful adjustments of delay, polarity, output levels and distance between the units, to force the radiated energy to become directional. On-board DSP optimizes and protects … Prix inférieurs pour les produits QSC Prix qsc ks118 In addition, the cardioid ‘cancelation’ is only effective below 70 Hz (blue areas). QSC’s latest DSP technology performs the complex processing that makes mirrored woofers interact at the rear of the enclosure(s) to produce a desirable cancellation, while simultaneously interacting at the front of the enclosure(s) to produce equally desirable summation. QSC KS112. “Ranging from the ultra-compact KS112, to the single-enclosure cardioid KS212C … What … Active 18" Subwoofer 3600 W Class D amplifier module, 18" (460 mm) Long excursion direct radiating driver, Frequency range: 35-111 Hz, Maximum SPL (sound pressure level): 136 dB, Omnidirectional or … QSC GX5 Professional 500W/Channel @ 8 Ohms Stereo Power Amplifier 2U Amp. The KS212C subwoofer represents the world’s first-in-class single-box active cardioid subwoofer solution for highly portable entertainment and installation applications. Exclusive 12, 8, 5 or 3 Easy Payments on QSC KS 212C 2 X 12 Inch 3600 Watt Active Cardioid Subwoofer only at AMS! QSC KS118 „Mit der Einführung des KS118 bekommen Anwender nun eine umfangreiche Auswahlmöglichkeit an Subwoofern und finden so garantiert die optimale Ergänzung für ihr Beschallungssystem“, sagt Chris Brouelette, Product Manager Portable Loudspeakers bei QSC.. „Vom ultrakompakten KS112 über das Cardioid-Modell KS212C hin zum neuen, extrem leistungsstarken KS118 … Notably, their newly improved built-in Class D amplifiers, ought to prove potent in this new subwoofer too. Be respectful, keep it civil and stay on topic. They are intended to augment the low frequency range – typically between 20 Hz and 120 Hz – of the main loudspeakers covering higher frequency bands. So I’m selling what I don’t need. QSC KS118 (Used - QSC Direct B-Stock) 3600W Active, Ported Subwoofer, High Powered 18" Subwoofer; 4 Swivel Casters; M20 Threaded Pole Socket Regular Price: $1,499.99 By the 2000s, subwoofers became almost universal in sound reinforcement systems in nightclubs and concert venues. QSC have also published a page providing details of the differences between the original series and this K2 Series. Add at least two items to compare. QSC KSub Powered Subwoofer (1000 Watts, 2x12 Often compared with QSC KS212C. The KS212C cardioid subwoofer is expected to ship in late Summer 2017 with an estimated US street price of 1,399.99 USD. All specifications are subject to change without notice. This creates undesirable low-frequency build-up onstage and wastes energy. Achetez votre QSC KS118 sur SonoVente.com, Sonorisation à un prix à couper le souffle ! The second example features a delay setting between the woofers that is too short. Show all. User Manual for the KS Family of subwoofers - Spanish, Application Guide for K Family Rental Sound - Spanish, Application guide for rental sound applications as it relates to the QSC K Series family of loudspeakers including examples, technical diagrams, and specifications - Spanish, Spanish specifications sheet for the KS212C cardioid subwoofer, KS212C Frequently Asked Questions - Spanish. There is some damage to the two upper corners on the cabinet, but it’s just cosmetic. However, to implement proper cardioid radiation, the adjustments of the above-mentioned parameters must be applied with an appropriate understanding of the laws of physics. QSC KS212C. Description Specs Rated 4.5/5 Reviews A Powered Sub That Keeps Your Low End Under Control. The main cause for intrigue however, has to be the fact the KS212C … 18 x. Sa directivité cardioïde permet une atténuation du niveau de pression acoustique de -15 dB à l’arrière. In Stock! The new sub is a hair smaller and 15% lighter. A breakthrough in innovation and design, the 3,600 Watt KS212C subwoofer uniquely provides all the benefits of cardioid deployment in a single, compact enclosure. Since the late 50’s sound engineers have setup subwoofer’s array – a minimum of two units. Back to Product List. QSC KS212C. QSC KS212C Active Dual 12" Cardioid Subwoofer 5.0 out of 5 stars 6. $2,999.98. Christophe Anet is an electroacoustics engineer and senior Product Marketing Manager for QSC Live Sound. $1,499.40. As a result, the radiation pattern displays an ideal cardioid shape, with 15 dB higher level at the front than at the rear. However, failing to adjust precisely the necessary parameters – namely spacing, delay, polarity and output levels – will result in much compromised subwoofer array performances. Sort: Clear All. $1,499.00. €108.62. RCF Sub 8003-AS II. The term cardioid radiation – or heart-shaped – refers to the shape of the directional coverage in which levels are louder to the front of the unit and lower behind it. User Manual for the KS Family of subwoofers - German, German specifications sheet for the KS212C cardioid subwoofer, KS212c Frequently Asked Questions - German, Application Guide for K Family Rental Sound - German, Application guide for rental sound applications as it relates to the QSC K Series family of loudspeakers including examples, technical diagrams, and specifications - German, User Manual for the KS Family of subwoofers - French, French specifications sheet for the KS212C cardioid subwoofer, KS212C Frequently Asked Questions - French, Application Guide for K Family Rental Sound - French, Application guide for rental sound applications as it relates to the QSC K Series family of loudspeakers including examples, technical diagrams, and specifications - French, User Manual for the KS Family of subwoofers - Chinese, KS212C Cardioid Subwoofer User Manual - Arabic, User Manual for the KS Family of subwoofers - Russian, Application Guide for K Family Rental Sound - Portuguese, Application guide for rental sound applications as it relates to the QSC K Series family of loudspeakers including examples, technical diagrams, and specifications - Portuguese, TouchMix-30 Pro Tablet Support Stand TS-1, AcousticDesign™ Series - Column Surface-Mount, AcousticDesign Series – SUB/SAT Loudspeakers, Network Touchscreen Controller Peripherals, Q-SYS Networking & 3rd Party Telephony Integration, AT Surface-Mount Network Audio Interfaces, Performance and Entertainment Venues Applications, 2D PDF Drawing of the KS21C Cardioid Subwoofer, 2D DXF Drawing of the KS21C Cardioid Subwoofer, 2D DXF Drawing of the KS21C Cardioid Subwoofer Amplifier Module, 3D DXF Drawing of the KS21C Cardioid Subwoofer, PSN Innovations: Keeping Bass in its Place, KS212C Review - Church Production Magazine, Dual 6th-order bandpass cardioid subwoofer, 180˚ Cardioid (15dB rear rejection @ 70Hz), Universal power supply 100 – 240 VAC, 50 – 60 Hz, CE, WEEE, UL, CHina RoHS, RoHS II, FCC Class B. “With the introduction of the KS118, QSC now offers users an unprecedented choice in selecting the perfect low-frequency companion for their sound reinforcement system,” says Chris Brouelette, product manager, Portable Loudspeakers. Too much bass energy is still wasted into the open area behind an outdoor party or into musician’s microphones. Add products. The K.2 series includes the K12.2, K10.2, and K8.2 full-range 2-way powered speakers. This … £1,333. So, below 200 Hz the energy radiated by a subwoofer is fully omnidirectional and this is because the directivity of a subwoofer is related to the ratio of its size to the length of the sound wave it produces. KS118 Active Subwoofer with a 3600-Watt Class-D Amplifier, 18-Inch Long Excursion Direct Radiating Driver, Selectable DEEP Mode, Omni-Directional or Cardioid Radiation Modes, Adjustable Crossover and Delay. €731.03. QSC … In doing so, both the rear attenuation as well as the on-axis sensitivity are optimized. Powered by a 3,600 Watt Class D amplifier, processed with the latest DSP technology, and featuring dual 12-inch long excursion drivers each arranged in a 6th order band pass chamber, these components all combine seamlessly to produce a staggering 15 dB more output at the front of the cabinet than at the rear. 12 x. el qsc ks118. Sales & Expert advice 800.606.6969 or 212.444.6615. Network Touch Screen Controller Peripherals, Qualified Network Switches and 3rd Party Setup Guides, Qualified Switches and 3rd Party Setup Guides, Network Touchscreen Controller Peripherals, PLD and CXD Series Loudspeaker Profiles for Processing Amplifiers, How to Understand All Those Loudspeaker Specs, KS Series Crossover Settings – Do and Don’t, How many Active Loudspeakers can you Daisy-Chain, California Transparency in Supply Chains Act. QSC KSub Powered Subwoofer (1000 Watts, 2x12 To illustrate the challenges one can have to implement cardioid radiation using two subwoofers, let’s look at one parameter at a time. When not playing guitar, you can find him either rock climbing in the Swiss Alps or painting landscape watercolors in the wilderness. E Series. CAISON BASSE AMPLIFIE QSC KS118. QSC has launched the KS118 active subwoofer. There is some damage to the two upper corners on the cabinet, but it’s just cosmetic. QSC KS212C K Cardioid Active Subwoofer Speaker (3600 Watts) $1,599.99. was - $3,969.93 | 24% OFF. Customer Service 800.221.5743 or 212.239.7765. Only 1 left in stock (more on the way). This super-efficient cardioid subwoofer delivers 15 dB more output from the front of the cab. QSC KS118 User Manual (24 pages) Brand: ... QSC KS212C ; QSC KS112 ; QSC KSub ; QSC K series ; QSC KLA series ; QSC … Make sure to check out the reviews but first of all press the … E Series. Comparing QSC KS118-NA vs QSC KW181 . Zaprasza “Ranging from the ultra-compact KS112, to the single-enclosure cardioid KS212C … 1 . qsc ks212c. Having the complete control on the subwoofer’ topology and EQ (especially for the KS212C where the distance between drivers is fixed) allows us to precisely tailor a cardioid DSP filter where delay and amplitude corrections are dependent of frequencies to achieve optimized cardioid radiation over the entire useable bandwidth. Figure 8 – Cardioid directivity characteristics of QSC KS212C Cardioid Active Subwoofer, measured at 4 m. The blue areas indicate the rejection. Too short Delay Setting Le KS212C, unique de sa catégorie, offre les avantages d'un caisson de basse de 2 x 1800 W d’une directivité cardioïde dans un boitier unique et compact. The new sub is a hair smaller and 15% lighter. It’s a single-box cardioid LF solution that offers fast, easy setup and offers solid directional performance. QSC KS212C. QSC’s KS212C pairs two 12-inch drivers with a 3,600-watt Class-D amp module to drive the speakers, while built-in DSP creates the cardioid pattern. The black lines highlight the usable range. 2x QSC KS212C Active Dual 12" Powered Cardioid Subwoofer 3600W ClassD Amplified. Sort: Clear All. Required fields are marked *. $2,399.99. A few years ago, QSC introduced a new amplifier platform of four-channel DSP power amplifiers featuring Flexible Amplifier Summing Technology™ (FAST). $109.99 $ 109. QSC KS212C. The various cases below use a cardioid subwoofer arrangement with front and rear-firing woofers. suggested QSC KW181 QSC KSUB QSC KW181 QSC KSUB Krüger&Matz KM 0514 Klipsch R-8SW Klipsch SPL-100 Klipsch SPL-120 Pioneer TS … 00. two units) do not radiate sound omni-directionally. QSC KS 212C … Très grande efficacité et performances impressionnantes dans les basses fréquences, ce nouveau caisson de chez QSC est facilement transportable grâce à son boitier robuste doté de poignées confortables et de 4 roulettes pour toujours plus de mobilité durant vos prestations Live. The following figure illustrates this with a measurement of two standard subwoofers facing forward and measured together. QSC KSUB. In this compromised case, too much bass is still radiated towards undesirable areas. “With the introduction of the KS118, QSC now offers users an unprecedented choice in selecting the perfect low-frequency companion for their sound reinforcement system,” says Chris Brouelette, product manager, Portable Loudspeakers. The KS118 succeeds the company’s KW181 model in the KS Series line of subwoofers. and Terms and Conditions. our site, you accept our use of cookies, Cookie Policy, Privacy Policy le QSC KS212C est un caisson cardioïde amplifié d'une puissance de 3600 Watts. Featuring a long-excursion 18-inch direct radiating driver powered by a 3600-Watt Class D amplifier, the KS118 delivers high sound pressure levels with dynamic and musical sound reproduction of very low frequencies. Was planning on starting my own DJ wedding business and ended up working for someone who had all the equipment. Figure 6 – Cardioid directivity characteristics of two subwoofers with inverted polarity and too long delay value applied, measured at 4 m. Figure 7 – Cardioid directivity characteristics of two subwoofers with inverted polarity and too long delay value applied, measured at 4 m. In order to overcome the adjustment difficulties encountered when trying to set up a cardioid array, QSC developed user-friendly products and solutions to guarantee perfect cardioid radiation at all times. QSC K 12.2. QSC KS212C K Cardioid Active Subwoofer Speaker (3600 Watts) Aim the bass where you need it with QSC's KS212C powered sub. Was planning on starting my own DJ wedding business and ended up working for someone who had all the equipment. Only 5 left in stock - order soon. Add to Cart. 18 . ... #QSC KS212C DJ Sub­woofer With Car­dioid Bass Dir­ec­tional Pat­tern |... dis­c­jock­eynews . For more information, visit the K.2 Series webpage. was - $2,102.96 | 29% OFF. ... QSC KS212C-CVR Soft Cover for KS212C Powered Cardioid Subwoofer. The compact and lightweight KS212C, powered by a dual 1800-watt Class D amplifier, is a single box cardioid solution incorporating dual 12-inch long-excursion drivers. 99. Great thanks to Rémi Vaucher, QSC Senior Technical Director, for his valuable notes and all the measurements he provided for this article. Highly portable, the cabinet features comfortable, aluminum handles and four, rear-mounted casters. With product registration. 45 . This super-efficient cardioid subwoofer delivers 15 dB more output from the front of the cab. Punchy, clean, tight bottom-end. With the advent of the compact cassette and the compact disc in the 1980s, the easy reproduction of deep and loud bass was no longer limited by the ability of a phonograph record stylus to track a groove. QSC KS118 (Used - QSC Direct B-Stock) 3600W Active, Ported Subwoofer, High Powered 18" Subwoofer; 4 Swivel Casters; M20 Threaded Pole Socket Regular Price: $1,499.99 Nov 23, 2020 Every so often, a new technology comes along that causes you to reconsider the concepts you knew and change the way you specify or design systems. £117. QSC KS118 18" 3600 Watt Powered Active DJ PA Subwoofers Subs w Covers Pack. This can result, for example, in too much bass energy radiating into musicians’ microphones or low frequencies disturbing another event nearby. “With the introduction of the KS118, QSC now offers users an unprecedented choice in selecting the perfect low frequency companion for their sound reinforcement system,” says Chris Brouelette, product manager, portable loudspeakers for QSC. The KS118 is a high output active subwoofer producing impressive low frequencies for mobile entertainment, AV rental, event production, and performance venues. QSC provided me with a pair of the new K.2 Series loudspeakers – but with its highly adjustable crossover, the KS118 can be dialed in to complement whatever top units you pair it with. We use cookies to understand how you use our site and to improve your experience. For a copy of the QSC limited warranty visit the QSC website at www.qsc.com Package Contents 1 KS112, KS118, or KS212C subwoofer 1 Locking AC power cord 2 White QSC logo 1 QSC limited warranty TD-000453 1 Quick start guide TD-000499 – KS212C TD-001518 – KS112 TD-001551 – KS118 … QSC’s new KS212C, the world’s first-in-class single-box powered cardioid subwoofer, removes all the guesswork and hassle. 5% bought QSC KS118: $1,619: Our most popular Active Subwoofers: Compare Products: Related Products. QSC KS212C PROS. QSC KS212C. SPL 136 dB, Omnidirektional - … ... #QSC KS212C … 1 . qsc ks212c. QSC K 12.2. $128. Figure 9 – Cardioid directivity characteristics of QSC KS212C Cardioid Active Subwoofer, measured at 4 m. The blue areas indicate the rejection. With practice and experience, it is possible to set up a subwoofer array with additional electronics to implement a correct cardioid subwoofer radiation. Figure 2 – Cardioid directivity characteristics of two subwoofers with inverted polarity and single delay value applied, measured at 4 m. Figure 3 – Cardioid directivity characteristics of two subwoofers with inverted polarity and single delay value applied, measured at 4 m. 2. In the mid-1950s, various hi-fi loudspeakers’ manufacturers started to introduce compact, sealed enclosures that had long-throw type woofers. The 18–inch long-excursion driver has a four-inch–diameter voice coil and is mounted in a direct–radiating ported enclosure. This means that the bass attenuation to the side of the subwoofer is fine whilst a lot of bass energy is still radiated to the back. QSC K 10.2. QSC presents Active Subwoofers KS212C.If you are on the lookout for pa speakers or pa equipment in general, then this may be a fitting choice. Save my name, email, and website in this browser for the next time I comment. Double transducteurs de 12 pouces à long débattement, ainsi qu'une Fréquence de coupure variable et possibilité d’enregistrer/rappeler des scènes pour les applications les plus utilisées. QSC KS 212C 2 X 12" 3600 Watt Active Cardioid Subwoofer. … Add products. QSC's new KS118 builds on the well-established reputation and success of its predecessor, the KW181, and brings an uprated power amp section, new driver and enhanced DSP. QSC KS212C K Cardioid Active Subwoofer Speaker (3600 Watts) Aim the bass where you need it with QSC's KS212C powered sub. QSC KS118 18-Inch 3600 Watts Active Powered Subwoofer. We have 1 QSC KS118 manual available for free PDF download: User Manual . Most subwoofers radiate energy around the entire enclosure, leading to undesirable LF build-up on stage and wasted energy around the sides and rear of the system, The KS212C subwoofer keeps "bass in its place"with a single-box cardioid array that produces anamazing 15 dB more output at the front than at the rear, 1 Peak SPL is measured on-axis at 1m, pink noise crest factor 10dB, unweighted Continuous SPL is based on theoretical calculations based upon transducer sensitivity and peak available power (for comparison purpose and in accordance with common industry practice. Let’s begin by defining what we mean by subwoofer? QSC KW181. Only 16 left in stock (more on the way). Free shipping. Intended for portable entertainment and installation … FREE Shipping by Amazon. This blog article is going to first explain and illustrate the various challenges of setting up a cardioid subwoofer array yourself, before revealing how QSC subwoofer solutions achieve outstanding results. Their on-board DSP technology performs the complex processing … QSC KS212C Cardioid 3,600W Dual 12 inch Powered Subwoofer. QSC’s new KS212C, the world’s first-in-class single-box powered cardioid subwoofer, removes all the guesswork and hassle. Class D 3600W (peak). Live Chat. QSC KS118 Cover, Housse de protection pour KS 118, En nylon robuste et résistant aux intempéries, Avec rembourrage de protection, Compartiment pour Comparer les prix qsc ks118 et enregistrer la comparaison. Hence, subwoofers became increasingly popular. 45 . Visit QSC.com for full details. Sales & Expert advice 800.606.6969 or 212.444.6615. Over the years, his passion for acoustics led him to design recording studios, lecture about psycho-acoustics and calibrate recording studio control rooms around the world. New in the range, the very high-output KS118 is powered by a 3600-watt Class D amplifier driving a single 18-inch direct radiating driver. Often compared with QSC KS212C. In order to simplify the setup work and make sure all QSC customers benefit, whenever needed, from perfect cardioid subwoofer radiation, we developed user-friendly products and solutions for a multitude of critical live sound applications. Free shipping. Ne payez pas trop et trouvez les meilleurs prix et offres qsc ks118 et occasions QSC. The K series from QSC has achieved much success in the active PA market, with the latest ‘dot-two’ versions raising the game further. QSC KW181. Contact Us. 4.8 out of 5 stars 9. Only 1 left in stock - order soon. 3.8 out of 5 stars 9. $1,499.00 $ 1,499. During the 1990s subwoofers were found in home stereo systems, custom car audio installations and in PA systems. suggested QSC KW181 QSC KSUB QSC KW181 QSC KSUB Krüger&Matz … Con un potente módulo de amplificador de 3600W Clase D y un driver radiante directo de 18''' de excursión larga, el KS118 hará que los pelos de la parte posterior de su cuello se pongan de pie para llamar la atención. Be respectful, keep it civil and stay on topic. Its on-board DSP menu offers the option of arraying two or more units in a forward/backward cardioid arrangement. Get it as soon as Wed, Aug 12. K Stands for Kilowatts: 2000+ Watts Peak Power, 1000 Watts Continuous Power These speakers' built-in Class D power amps employ QSC… QSC KS118 Active Subwoofer. QSC KW152 Active DJ/Club 1000W Amplified Class-D 2-way Powered Speaker. By continuing to use So I’m selling what I don’t need. $1,599.99. In Practice: Playing in a relatively big room, with a crowd of over 250, my pair of KS118 … QSC also offers the KS112, KS118, and KS212C powered subwoofers. £659. Print Email. Next. The QSC KS212C is a dual 12-inch cardioid subwoofer that can be paired with several different QSC cabinets (including the K8.2, K10.2, and K12.2 point source boxes, among others). “With the introduction of the KS118, QSC now offers users an unprecedented choice in selecting the perfect low frequency companion for their sound reinforcement system,” says Chris Brouelette, Product Manager, Portable Loudspeakers. Condition is Used. ... the KS212C … Two QSC KS Series active subwoofers feature cardioid radiation patterns. Your email address will not be published. QSC KS212C Powered Dual 12" Cardioid Subwoofer with Cover and Pole. TESZT: KS118 vs KW181 Éppen csak megérkezett Magyarországra, máris gyors tesztnek vetettük alá a KS118 aktív mélysugárzót és összehasonlítottuk a legendás KW181 aktív mélysugárzóval. As a result, the coverage is varying between 180° at 50 Hz and 270° at 150 Hz. ... QSC KS212C Active Dual 12-inch Cardioid Subwoofer Print Email. Item #: QSC KS212C LIST. Amp works perfectly, I’ve only used it a couple times. Condition is Used. Your email address will not be published. Frequently asked questions for KS212C loudspeaker. A breakthrough in innovation and design, the 3,600 Watt KS212C … This means that such a subwoofer array will be cardioid at very low frequencies, but less and less so as you increase frequencies. This setup is, once again, not optimal, as our original target is not reached. Achetez votre QSC KS212C sur SonoVente.com, Sonorisation à un prix à couper le souffle ! “Keeping bass in its place” for mobile entertainers, AV production and rental professionals, as well as modestly-sized performance venues, the KS212C subwoofer is unparalleled in its ability to manage low frequencies on the stage, or any application where undesirable low frequency energy needs to be minimized. Looking at the strange horseshoe shape graph below one can see that the subwoofer is not usable above 140 Hz (black line). Amp works perfectly, I’ve only used it a couple times. A subwoofer – or ‘sub’ – is a complete loudspeaker dedicated to the reproduction of low-pitched audio frequencies known as bass. QSC KLA181 18” 1000-Watt Active Line Array System Subwoofer, Black 5.0 out of 5 stars 1. The black lines highlight the usable range. The KS212C subwoofer represents the world’s first-in-class single-box active cardioid subwoofer solution for highly portable entertainment and installation applications. Costa Mesa, CA (October 9, 2019)—QSC has introduced the KS118 active subwoofer, adding to its KS Series subwoofer family. $ 1,599.99. The KS118 is a very high output active subwoofer producing impressive low frequencies for mobile entertainment, AV production, clubs and performance venues. Add to list. “Ranging from the ultra-compact KS112, to the single-enclosure cardioid KS212C … In this case, the forward radiation is improved and better controlled but unwanted rear radiation (rear lobes) completely spoil the cardioid ‘cancellation’ effect. Back to Product List. QSC KS118, Aktiver 18" Subwoofer, 3600 Watt Class D Verstärkermodul, Direkt abstrahlender 18-Zoll-Langhub-Treiber, Frequenzbereich 35 Hz - 111 Hz, Max. Heard about QSC FAST Power Amplifiers Blog Nov 23, 2020. QSC KS118 Direct Radiating 18" Subwoofer. QSC KSUB. QSC KS 212C Cover. The new KS212C from QSC is a cardioid subwoofer that utilizes dual 12-inch cone transducers powered by a pair of class D amplifiers (each rated at 1,800 watts peak).. It’s a 6th-order … We're sorry, but this item is unavailable. QSC KS112. Jakie zalety płyną z technologii kardioidalnej w subwooferze oraz jak w prosty i samodzielny sposób wykorzystać klasyczną "kardioidę" w aktywnych subwooferach QSC KS118 oraz KS212C? Cardioid subwoofers, such as the QSC KS212C or KS118 (using min. The length of the sound wave is inversely proportional to its frequency, and therefore when the low frequency waves are much longer than the dimensions of the subwoofer transducer and enclosure, the radiation pattern becomes similar in all directions, including to the sides and back. Two M20 sockets accept a 35 mm loudspeaker pole in either horizontal or vertical orientation. The term “cardioid” refers to the fact that, unlike traditional subwoofers, this product is intentionally not omnidirectional (see figure 1). In this first case, we have inverted the polarity between the woofers (180-degree phase-shift on the rear woofer) and added an appropriate delay value between the woofers (note that the delay is fixed over the entire subwoofer bandwidth). Doté d'un haut-parleur à rayonnement direct de 18 pouces alimenté par un amplificateur de classe D de 3600 watts, le KS118 offre des niveaux de pression acoustique élevés avec une reproduction sonore dynamique et musicale des très basses fréquences. QSC KS118 Active Subwoofer.
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