Dipole tweeter. Scan-Speak, Accuton, Mundorf, SEAS.

Dipole tweeter Had problems with tonality though, and this was way before DSP was cheap and common so fixing it was a challenge. Tweeter: Linaeum Dipole. Apr 16, 2025 · The RadioShack Optimus Pro LX5 loudspeaker utilizes a 2" x 4" Linaeum dipole tweeter. In The AMT25D6. Free-standing super-tweeter with excellent transient response and 1,300-31,000Hz range. com Beston RT002A-Dipolar Ribbon Tweeter 6Ohm Overview: Beston’s RT002A-dipolar features a laminated aluminum diaphragm, driven by a compact and lightweight neodymium magnet. Three are brand new in the box, one is new, never used, but without a box. They did actually work really well in the 'disappearing act'. So anyone know of any good designs for these dipole tweets. The rear of the ribbon is left open for use in dipole designs, which also improves response between 1,000 and 3,000 Hz. I want to bring them in around 10,000 khz, so I'm thinking a 1 uf cap. Components for perfect acoustical adjustment and propriate stands for free-standing on-top placement are available, too. . It seems that I'm about the only one on this planet that didn't like them much, too sterile for me. Jul 31, 2015 · A ribbon dipole tweeter reduced to the bare essentials that works and measures surprisingly well. This Dec 20, 2018 · By having dipole tweeters, you are much increasing the potential for destructive interference by differing effective path lengths, just by having the back wave bouncing about the room. One line is optimized for a free-standing installation. It was the bookshelf with the 6" woofer and the dipole tweeter. Bought for a speaker building project that never started. Oct 12, 2020 · At a certain point of relative rear tweeter level (or high frequency energy coming off the backside of a dipole,) the listener begins to pick up confusing reflections that badly smear imaging and create listener fatigue. 2) A forward firing monopole on top of the baffle. Folded Kapton ribbon diaphragm delivers clean, detailed, and highly dynamic output Open back design permits dipole or chamber loading Pro-level output and ruggedness for PA Our super tweeters extend your system's high-frequency response well beyond the range of conventional tweeters. Original Radio Shack Catalog Number 40-1389You can simply mount it on the top or side of an existing speaker or use as part of a diy speaker buildTweeter has a built-in ( Brand: Raal ), ( Type: 140-15d Dipole ) Review RAAL Ribbons Tweeters Extra Ship Dipole World Free The The RAAL 140-15D Ribbon Tweeters Dipole is an exceptional high-frequency audio solution designed for discerning audiophiles and audio professionals. Jun 5, 2025 · GRS PT6816-8 Dipole with Dayton E180HE Since I already have the E180HE mounted, it’ll save a lot of time if I just use her with the PT6816. 40 SAVE 39% Item History - Pre-owned with minor flaws (see condition notes below) Apr 26, 2011 · I've also run across some Toshiba speakers with dipole Linaeum tweeters and a 6. 5dB/2. Oct) Oct 18, 2020 · Ah, memories. Mundorf AMT Tweeters Dipole The dipole AMT models come in two lines. They are lauded for the celibrated Linæum dipole tweeter and criticized for the woofer. By definition an open baffle gets its wonderful spacious sound (boxless) by exploiting the dipole emission of speakers. 5) An omni Nov 21, 2020 · As tweeters, they are dipole (or other versions are monopole), and they have variable surface area - lower frequencies radiate farther along the curved leaves, and therefore push more air. Dipole AMT17D has also proved itself as an outstanding super tweeter, which can easily be matched with any given speaker. Although in some ways they sounded better than my standard dome tweeter they definitively lack sparkle. What's Included Power Handling: 50W RMS / 100W Maximum. Finally, with its high 100dB sensitivity, exceptional linearity and extended frequency range, AMT29 represents the perfect synthesis of Mundorf HiFi AMT and Mundorf Pro AMT Nov 3, 2002 · For more info on the Dipole you can read a few sites about the LX5 mods. Jan 7, 2007 · Hello, After buying a pair of Sansui LM-220 speakers today (they've made some very nice speaker imo) I've been reading the brochure that explains a certain tweeter feature. Dipole Tweeter Your Optimus Dipole Tweeter uses a pliable diaphragm to reduce or elimi-nate distortion caused by excess vi-bration. VCLLabs has done for him the investigation of the dipole system and the design of the digital 3-way full range dipole speaker with Peerless woofers, Audio Techology midrange and Mundorf AMT dipole tweeter The VCL EX21 is a full range dipole loudspeaker. comDESCRIPTION Add on self-contained Linaeum di-pole tweeter module, w/ built in capacitor; frequency range: 2. Jan 31, 2013 · A quality tweeter in a system where the crossover givers too much emphasis on the upper end is one thing, but a bad-sounding tweeter can't be fixed with a crossover. 005mm Ribbon mass: 0. The open-back design gives this tweeter true dipole radiation making it the perfect choice for use in open Aug 20, 2013 · The Dayton Audio AMTPRO-4 Air Motion Transformer is designed for professional audio and demanding high-fidelity applications in which high SPL demands combine with the need for detailed reproduction and musical finesse. Premium Mundorf AMT17D2. The Beston RT002A-Dipole tweeter’s driven radiating surface mass is extremely low, and contributes to Find many great new & used options and get the best deals for RCA PRO-LX55 DIPOLE TWEETER 65-WATT 2-WAY DIE-CAST COMPACT SPEAKERS PAIR at the best online prices at eBay! Free shipping for many products! Linaeum Tweeters (Dipole) Like New $60Brand new in the boxes. Assuming flat on axis response is the goal for either approach we must look to other considerations to see the difference is behavior of these two approaches. This dipole tweeter is a part of RAAL's renowned line of ribbon tweeters, which are renowned for their exceptional clarity, detail, and natural Dipole AMT17D has also proved itself as an outstanding super tweeter, which can easily be matched with any given speaker. I have many other items for sale, please click: See o Apr 3, 2022 · Hi folks, I would like to ask which ribbon (and AMT) tweeter can be used for dipole application? It will only need to cover from 3500-4000 Hz up with LR-4 acoustic crossover. Not just the shaped noise signal for power measurement methods, but real high-power signal peaks can be transmitted to the ribbon, which preserves the natural dynamics recorded. They sound excellent and compare to expensive tweeters. This might come as a surprise, but the Feb 22, 2025 · I'm building a open baffle/dipole speaker and want to try a rear mounted tweeter. Optimus Dipole Tweeter Floorstanding Speakers user reviews : 4. It is also important to keep them at least 18" from the side and back walls, so the first reflections don't confuse the sound. Apr 18, 2020 · It appears that the original Alnico magnet LE20-1 tweeter is much sought after and commands high second-hand prices. Pulled out to test only. Just for starts, I don't know what Linaeum means. But a dipole design in a very small on-wall speaker? Impossible? Meet the Model S-15, featuring a dipole tweeter with our ingenious AER technology, Ambience Enhancing Radiation. The Beston RT002A-Dipole tweeter's driven radiating surface mass is extremely low, and contributes to the transducer's superb range, efficiency, tonal neutrality, and transient response. * Magnet Weight 2. 2 Special Properties • Low Distortion • Extended Bandwidth Apr 24, 2017 · The Beston RT002A tweeter is available in a "dipole" version from Parts Express. Feb 26, 2025 · Discovered that the Linaeum dipoles from some Optimus LX5 nest nicely on the top of the ADC MS-650. The primary inductance of Dec 29, 2009 · Hi, I'm looking for suggestions for dipole tweeters, the Linaeums are thin on the ground and the Beyma TPL-150 is way above my budget. * Spea 3 days ago · Iconic Linaeum Dipole Tweeter. 027g Ribbon area: 21 cm sq Gap induction: 0. At the moment, I'm taking my time in the planning stage of a 12-15” 3-way build, and among the high-frequency driver considerations are RAAL's ribbon tweeters. This is due mainly to the AMT's characteristics of a dipole sound radiator, which makes enclosure in traditional speaker cabinets difficult without sacrificing sound quality or employing sound reflex baffles. As the frequency goes up, they radiate from a narrower and narrower area - and they approach a line source at the highest frequencies. Ward is co-owner and designer at MONOLITH Magnetics and a good friend. I’ve crossed them using a 6. The outer flange dimensions of this tweeter are 60 x 60 mm. May 16, 2019 · I am in the process of designing my first open baffle speaker and didn't like the idea of having two dome tweeters (front and back) or expensive dipole ribbon tweeters. Ribbon material: Aluminum Ribbon dimensions: 140 mm x 15mm x 0. Amplifier requirements: 100W recommended maximum. I used the RatShack dipole Linaeum tweeters in a DIY poor-mans Gallo Nucleus project. The dipole AMT models come in two lines. Shop now for fast shipping and easy returns! Oct 27, 2025 · Optimus Linaeum Tweeter ET-6 for PRO LX5 Bookshelf Speakers "TESTED WORKING" Aug 5, 2023 · I'm looking for input and listening impressions from people who have used RAAL tweeters. 8 uF cap at about 3,900hz which is a little lower than what they were Feb 14, 2010 · There have been some attempts lately to make dipole tweeters work up to high frequencies with constant directivity. The gimmick is that the backside of the tweeter isn't closed but is connected to three small 'horns' firing upward, left We have a great selection of replacement cone tweeters, piezo horns, compression drivers, soft dome, mylar dome, and titanium dome tweeters. 83V/m (B-weighted) Crossover Frequency: 4-5kHz Other Notes: The LX5 also features a 5" polypropylene-cone bass/midrange driver. Indeed, the original woofer is the downfall of this speaker, Jun 8, 2008 · I find they do miss a tad of the top end and was thinking about using the Linaeum Dipole Tweeter as a super tweeter. Model: PRO LX5. Sep 13, 2023 · I found that adding a rear tweeter is a significant enhancement because then the dipole radiation extends to both extremes (Photo 2). Dec 1, 2010 · I’ve just built the frames for a 3 way active dipole, with “nude” mids and tweeters. Scan-Speak, Accuton, Mundorf, SEAS. 2 dipole tweeter is chosen. Optimus PRO LX5 with Linæum TweetersHere we have the much lauded (and sometimes criticized) Radio Shack/Tandy LX5 with the venerated Linæum tweeter. 3uF polypropylene capacitor). They don’t have an omnidirectional radiation pattern, but two symmetrical lobes at the front and back side of the cabinet. 6% positive RAAL DIPOLE140-15DAM, 21cm2 Dipole Aluminum Ribbon with Amorphous C-core Transfo, 8 ohm 242mm x 194mm Faceplate January 2022 – VCL DI-215/W, a 3-way full range dipole speaker with 2 AE woofers, Seas Excel midrange and Mundorf AMT dipole tweeter The VCL DI-215/W is a 3 – way full range dipole loudspeaker built by Ward De Ceuninck. Apr 25, 2021 · Aperion Audio's Flagship Super Tweeter, the Ultimate Audiophile Tweak! Wow! Discussion in ' Audio Hardware ' started by Litejazz53, Apr 25, 2021. May 11, 2008 · Removal of Optimus/Lineaum dipole tweeters Anyone have any experience in removing these tweeters and/or the accompanying woofers from the Radio Shack Optimus LX-5 and LX-10 speaker systems? Would like to experiment with these units,but don't want to damage them in doing so. Quick Overview The Dayton Audio AMTPRO-4 Air Motion Transformer is designed for professional audio and demanding high-fidelity applications in which high SPL demands combine with the need for detailed reproduction and musical finesse. These specialized drivers reproduce ultra-high frequencies that add air, space, and dimension to your music. Nominal impedance: 8 ohms. 1-C Dipole Tweeter is part of mundorf's Dipole line and is optimized for in-baffle installation. How high can we go, if the tweeter housing is already almost as small as its radiating area? I would like to demonstrate the issues involved with an idealized 1 inch circular One Pair Optimus Dipole Add-On Tweeters Linaeum Designed, Ribbon Tweeters Old Radio Shack Catalog Number 40-1389You can simply mount it on the top or side of an existing speaker. Best dipole tweeter?Circles » Audio/Video Gear and Systems » Open Baffle Speakers (Moderator: JohnR) » The RAAL Dipole is the thinnest dipole true ribbon on the market. The Bohlender Graebener Neo3PDR (the former budget champ before the price more than doubled overnight) is now unavailable. Find top brands, exclusive offers, and unbeatable prices on eBay. com. 5" tweeter crossed over at 2900 Hz; they also had a monopole center channel speaker. Jun 22, 2021 · With all that said, I have noticed and enjoyed a much more robust high frequency presentation using the Aperion products, from the least expensive planar magnet design to the newest dipole AMT super tweeters, to me, they all sound very nice and ADD to my overall musical enjoyment, as well as video/movies. I loved the RCA speakers that used the dipole tweeter, and I wanted to build my own. Finally, with its high 100dB sensitivity, exceptional linearity and extended frequency range, AMT29 represents the perfect synthesis of Mundorf HiFi AMT and Mundorf Pro AMT Radio Shack Linaeum Tweeter module Floorstanding Speakers user reviews : 4. Talk about beginning with a blank page! I've read that they're terrible, great and everything in between, mostly from guys who Raal "Original 140-15D" Ribbon Tweeter with Amorphous Core Spec sheet: Raal 140-15D PDF TRANSFORMER: The impedance matching transformer is made to transfer the real power without distortion. Perfect for supplementing your existing tweeters in pursuit of the ultimate high-frequency extension and transparency. Finally, with its high 100dB sensitivity, exceptional linearity and extended frequency range, AMT29 represents the perfect synthesis of Mundorf HiFi AMT and Mundorf Pro AMT hifi AMT Dipole Nominal Impedance Sensitivity at 2. Jan 25, 2025 · One Pair (2 pieces) Radio Shack Optimus Dipole Add-On Tweeters Linaeum Designed, Ribbon Tweeters Used but in very good condition. 83 Vrms in Oct 27, 2025 · NEW OPEN BOX PAIR Linaeum Dipole Ribbon Tweeters Optimus Radio Shack 40-1389 quantumheat100 (4953) 99. May 7, 2021 · The Review Aperion Audio just sent their brand-spanking-new AMT Dual Firing (Dipole) Super Tweeter for review. Heres a picture of the box of my pair. Explore a wide range of our Linaeum Tweeters selection. Summary: When designing a dipole speaker with conventional drivers we are faced with the decision of whether we should use either a single front firing tweeter or both a front and rear tweeter. Nov 26, 2015 · Doing a cursory search of mine and others posts, the quest for the ideal dipole tweeter seems to raise its head every couple of years. Measured sensitivity: 81. I own other Linaeum speakers, I should know! One Pair (2) Radio Shack Optimus Dipole Add-On Tweeters Linaeum Designed, Ribbon Tweeters Old Radio Shack Catalog Number 40-1389 Apr 26, 2020 · So if you equalize different tweeters in the free field to an identical frequency and phase response, they will sound identical. You design the speaker for radiation pattern, dipole Constant Directivity pattern across the entire range… then you fix frequency response problems with digital signal processing (DSP). You can add the tweeter to any existing 8-ohm speaker system. A dipole tweeter ( open backside AMT or ribon ) 2. It is a dipole design and very small, interesting to realize a dipole at high frequencies. response: 2kHz - 60 kHz Sensitivity: 93db/1W/1m Impedance: 8 ohm I have not heard the RAAL dipole tweeter but I used to have a pair of the RAAL 140-15D ribbons wich I have sold lately. So I tried some open back paper tweeters/mini full range drivers. But which ribbon/AMT driver, there is Dec 2, 2004 · I don't recommend facing them directly forward since only the tweeter is a dipole, not the woofer, unlike most other dipole speaker systems. Only one dome tweeter firing forward If dipole tweeters what to look for? If dome tweeters same level for Apr 11, 2019 · The Linaeum TLS tweeter comes in two versions: the single-sided Model 2 monopole shown in the diagrams and a Model 1. College and GRS PT6816-8 8" Planar Slim Tweeter 8 OhmGRS PT6816-8 8" Planar Slim Tweeter 8 OhmDesigned to deliver high efficiency with extremely smooth response. I’m prepared to sacrifice some dipole “true May 5, 2004 · Ya if you go to radio shack and ask for a replacement tweeter for the LX-5. In that review, I found the MKII to be a functional and Apr 26, 2011 · I was wondering about the speakers with dipole Linaeum speakers Radio Shack sold under the Optimus and RCA brands. That can sound very different in room. For coherence this should include all drivers - bass, midrange and tweeters. Product Highlights Advanced Air Motion Transformer design "squeezes" air molecules instead of shoving or crushing them Folded Kapton ribbon diaphragm delivers RCA 40-5007 Dipole Tweeter 65-Watt 2-Way Die-Cast Mini Speaker PRO-LX55 $44. Both are 4 ohm. Oct 22, 2014 · Right now it just doesn't seem like the dipole tweeters can keep up with the 8" drivers at many volume levels and with many types of music. With wide dispersion capabilities and minimal mounting flange, the PT6816-8 is an excellent choice for use in high output line arrays. Power response seems a like choice. You can see part # 40-1389. Aug 14, 2023 · The Aurum Cantus AST2560 is a much better tweeter as a dipole and does not have the response problems of the B&G/GRS unit. I kind of wondered about a really cheap driver (Im in the UK before someone gives me a nice partsexpress buy-out link ;)) Greetings,Up for listing is this New RCA Pro-LX55 Home Theater Dipole Tweeter 65 Watt 2 Way Die Cast Mini Speaker. 83V/1m Application (@12/6dB. 1-R Dipole Tweeter is part of mundorf's Dipole line and is optimized for in-baffle installation. Jun 3, 2025 · The main reason I’m using a dipole to test this tweeter is simply because it’s the fastest and most convenient way. It was taken out for measuring, but the project never materialized. May 5, 2004 · Ya if you go to radio shack and ask for a replacement tweeter for the LX-5. My thanks in advance. I would suggest absorbing the tweeter back wave and trying again. For this review, I’m using an electronic crossover (24dB/oct) to cross the woofer and the tweeter at 700Hz. For the Apr 18, 2020 · It appears that the original Alnico magnet LE20-1 tweeter is much sought after and commands high second-hand prices. This time I decided to drop the steel frame in an Dipole tweeterCircles » Audio/Video Gear and Systems » Open Baffle Speakers (Moderator: JohnR) » Topic: Dipole tweeter Tweeter Dipole The Mundorf AMT17D2. One of my favorite traits of properly set up open baffle speakers is when the sound seems to continue on past the speakers from the rear radiating sound during panning. Their transient response is very similar to awoofer’… May 6, 2008 · Drive-units: 5" polypropylene-cone bass/midrange; 2" by 4" Linaeum dipole tweeter. 99 $27. For planar I know the B&G Neo3 and its replacement PTS-2522, Aurum Cartus ATS2560. SPL on axis and horizontal off axis 15 30 45 60 75 90 degrees at 3m, 2. The tweeter baffle width is chosen also 60 mm. The problem is the only extra tweeters i have are different, similar sensitivity though. May 14, 2019 · Because the combination of tight vertical directivity and low distortion which came from this tweeter melded with the semi-dipole operation of the mid-range in that design. Frequency range: 85Hz–20kHz (no limits given). 83V/m (B-weighted). Fig 1 – GRS PT6816-8 RAW Frequency Response (Dipole) Fig 1 is the RAW frequency response of the dipole PT6816. The amps im using are ice power amps, is it safe to wire them up in series and try it out? For the dipole side cancellation they'll probably contribute next to nothing as the baffle of most normal speakers is wide enough to add the necessary directivity at high frequencies already. 3 out of 5 - 8 reviews - audioreview. I bought these probably a year and a half ago, but the box looks pretty original design. Measured crossover frequency: 4–5kHz. If this combination is not to my liking, I will find another woofer. 1 Dipole Tweeter is part of mundorf's Dipole line and is optimized for free-standing installation. Super tweeter mounting stands are also available. Woofer: Approx. However Get the best deals for Linaeum Tweeters at eBay. I haven't seen any measurements of dipole performance but this driver seems to be the current budget champ for experimenting with dipole tweeters. I used the GRS Neo3 clone in a project last year. Anyone used Vifa D25AG77 before ? Anyone know if I can get away with tweeters back to back? Cheers Happy New Year ! What tweeter orientation is recommended to cover the higher frequencies of 3 way open baffles? 1) A dipole tweeter located adjacent to the midrange driver within the baffle. Just unscrew its mounting faceplate and you will get a small and compact dipole tweeter that can be crossed over around 2. Soft domes have markedly different off-axis behavior from on-axis. It's been a few years since I last asked so why break with tradition? I'm pretty happy with my main system, a 4 way active system with BG Neo3, Neo 10, Peerless The AMT27D1. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Aug 3, 2012 · The dipole SPL Vs frequency characteristic was in line with theory as was the directivity, dropping away off axis at higher frequency. My intention is simply to hear the performance of the PT6816 planar. Now a tweeter “dilemma”: I want a dipole tweeter that is high efficiency to allow high peaks with a moderate power tube amp, by which I mean drivers > 95 dB. For this measurement, the bass is removed from the May 19, 2015 · Hi What kind of tweeter is the best solution for Open Baffle / No Baffle? 1. Eh, yes and no. Tweeter has a built-in crossover, and radiates sound in a unique figure-8 pattern. Ingenious dipole tweeter design Our large flagship Model D loudspeaker is famous for its dipole design, exciting the sound in a room like an instrument would. Dipole AMT17D has also proved itself as an outstanding supplementary super tweeter, which can easily be matched with any given speaker. See PDF for full specs, measurements, and physical dimensions. DIPOL SERIE AMT17D2. This is my third attempt at building a dipole ribbon tweeter, the first two used steel frames for holding the magnets and closing the field. Vintage JBL LE20 and LE25 tweeters The only other thing worth trying is to replace the 3uF tweeter capacitor (use a modern 3. 5 dipole that consists of two identical ribbon-radiator pairs attached to opposite ends of the voice-coil form. Tom tpsonic 05-10-2008 Is the current tweeter dipole? I think having a dipole tweeter with with narrow dispersion will still sound more natural than a wide dispersion Tweeter that's only monopole. I feel like maybe the output of the (now ~20 year old) Linaeum dipole tweeters declines with time. Call (608) 831-3433 for free advice. 5k - 25k The AMT23D6. Larry Van Wormer's mods include a crossover for the dipole tweeter and a few comments on there sound. 5T Freq. Jul 20, 2024 · I guess adding a Mundorf dipole tweeter to the Heils would be the ultimate combination. 2kHz even without any baffle around it. Aug 10, 2006 · I have a pair of these tweets, they came with a pair of Bandor 150 drivers that I want to use for something else. Feb 28, 2021 · While apparently very good as a mid-tweeter or full tweeter, the AMT is not commonly employed in lower frequency speakers. Choose the best matching replacement or upgrade with a higher quality driver to fit your repair project or next custom design. I did the same with a similar ( though not as shallow) pair of Vifa 19mm tweeters and again the numbers measured matched the expected outcome. It has a Frequency Response: 85Hz - 20kHz Sensitivity: 81. Global shipping. All advice is appreciated. The present brochure introduces the current lines of Mundorf HiFi AMT tweeters, of which all have two superior key properties in common: An excellent transient response and an outstanding low distortion ratio! The differences lie mainly in their frequency ranges, sound pressure levels and dispersion angels. It wasn’t that long ago (January 2021) I had the opportunity to review the Aperion Audio MKII Planar Ribbon Super Tweeter. Standard AMTs: Perfect for traditional cabinet designs Dipole Models: Specialized for open-baffle applications Super Tweeters: Enhanced high-frequency extension options Professional Variants: High-SPL models for studio applications Each AMT tweeter is carefully selected for our catalog based on performance, reliability, and value. 2 dipole tweeter for open-baffle designs. Apr 3, 2022 · Hi folks, I would like to ask which ribbon (and AMT) tweeter can be used for dipole application? It will only need to cover from 3500-4000 Hz up with LR-4 acoustic crossover. Item is completely New In Box. I’ve been listening to them and have been pleasantly surprised how well they add airy-ness. 2-Way Bookshelf Speaker. Jul 15, 2008 · (4) Brand new Radio Shack/ Optimus Dipole tweeters. Dipoles have radiating surfaces at the front and back side of the cabinet that are operating in anti phase. If it doesn’t work out, I will resort to a rear chamber. 4) A combination of two monopoles on top of the baffle, one firing forward and the other rearward. 6 out of 5 - 14 reviews - audioreview. Their transient response is very similar to a woofer's transient response when mounted in an open baffle. Premium loudspeaker parts from authorized dealers. Two dome tweeter one firing forward and one backward 3. Get the best deals for Tweeter Linaeum at eBay. 8 oz. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Discover premium RAAL ribbon tweeters for speakers, delivering unparalleled high-frequency clarity and exceptional audio performance. If you integrate them in an open baffle with a midrange that has both sides exposed, the phase of the rear tweeter needs to be inverted to cross over to the back of the midrange properly. 3) An upward firing monopole on top of the baffle. fhgqwi sdkoltpu lqbvm hicq qevd nqxte xkqndf icipesj zik ozvhs egzanoqe vbsedv sxzfglr zhe nbnkif