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Welcome to DIY Sound Group
Customer Reviews
7 Item(s)
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Serious High-End Performance review by UtopiaNemo on 7/13/2023I bought these for my main L/R in my system (after way too much research). They replaced my beloved Epos Epic 2s, which, while incredible speakers for the price, would start to lose their composure when really pushed. I was looking for a speaker that could handle high SPL without losing their dynamics, but had wider dispersion (and hence a wider soundstage) and more refinement than the more HT-centric that DIYSG offers. Also, this being DIY, I was looking for the best dollar: performance ratio I could possibly get with those criteria.
After literally years of research and indecision, I went with the Helix MTMs. As in another customer review here, Erich suggested the Helix over the Apollo because my preference was a little bit more refinement over a little bit more SPL. Did they meet my standards? Absolutely they did.
The kit was easy to put together, and like others I recommend the crossover kit. The finish work was harder than I anticipated, but I’m an electrician by trade. At my limited skill level (and a lot of sweat equity), I was able to get a look that most visitors have been pretty impressed with.
But you’re really reading this to find out about the sound, aren’t you? Well, the Helix sounds amazing. Extremely balanced across the frequency range, great imaging and soundstage, and well composed and dynamic at all volumes in my 15’x20’x8’ room. I recommend use with subs for music with extremely low frequencies, such as organs, dubstep, and modern rap, but they’ll do fine unassisted with anything else.
As happy as I was with the Helix, I haven’t compared them with anything else in my room. I recently hosted a GTG with some folks who listen to a lot of high dollar gear, and they were extremely impressed with the speakers. They have the ability to play loud while still revealing subtle details in the recordings.
I do have one caveat to the Helix MTM, and that is that they have the typical narrow vertical dispersion pattern of an MTM. I feel the extra muscle in presentation is worth it, but YMMV. I’m not sure I’d use a Helix MTM lying on its side for a center, but the phantom center is so good, I’m not missing it. I may purchase five of the MT versions to replace my remaining surround channels, with the last MT for a center, but I’m happy enough with these as-is that I’m in no hurry to modify what I’ve got. As for the vertical dispersion, as long as you’re not alternating between sitting and standing in the middle of a music/movie session, there’s no problem. And actually, even if you choose to sit with the tweeter a bit above or below the ear, it’s still fine. Just pick a seat and stay there. Oh, and get the Helix. They’re freaking awesome. -
A legitimate Hi-Fi dome tweeter option from DIYSG review by Brian6751 on 12/21/2019
Shout out to the man, the myth, the legend, Mr. Jeff Bagby!
I FINALLY finished building his Helix Dome MTM design for LCR’s and I am shocked at how good they sound. I thought the MT version was a giant killer for its price but the MTM takes it to another level. I have been staying up way too late the last few nights with a huge Joker-ass grin on my face. Lol
I mostly listen to two channel and consider myself pretty picky when it comes to speakers. I know within a few minutes wether I like a speaker or not. I’ll usually examine the highs first, then the bass, and finally the midrange. They don’t all have to sound the same, they just have to have proper driver integration and sound good!
The Helix Dome MTM is definitely one of those speakers that I knew I liked right away. The driver integration is spot on. That tweeter is smooth as silk with tons of detail, air and excellent off axis ability. The bass is surprisingly full and detailed and extends plenty low for my music tastes. The midrange is as good as any I have heard in a two-way speaker of this size and up to around the $2k range. That woofer does a great job of giving the mids some density without getting muddied up when it has to jam out the lower frequencies at the same time.
This is a lush, well designed, HiFi sounding speaker and definitely gets my recommendation for two channel or someone with a mixed use system with a priority on music listening. Especially if you're looking for something other than the usual horn loaded designs. (Nothing against horns. Put your torches away lol)
What you have here is two great drivers that compliment each other combined with the crossover wizardry of Jeff Bagby. Knowing that, you would have to think they sound amazing and they do!
Thank you Jeff (and Erich at DIYSG) for sharing another incredible design and making it possible for us to enjoy great speakers without selling a kidney!
[url]https://www.diysoundgroup.com/home-audio-speaker-kits/home-audio-series/helix-speaker-kits/helix-dome-mtm-kit.html[/url]
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Fantastic review by Darrel on 11/19/2019
If you are on the fence of buying these--hop off the fence and press the buy button. These punch WAYYY above their price point, and I could not be any happier with my purchase.
The best way I can describe these speakers is clean and clear without being sterile.
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Great LCR (The 3 Amigos) review by Rick on 6/3/2019
This is my second go-round with DIYSG and I have yet to be disappointed. I wanted matching LCR for my fronts and debated for a bit on whether to buy these or the Apollos. After speaking with Erich for a bit, he convinced me to purchase the Helix's as they would be very much on par with the Apollo's. Im sure the Apollos are great, but if you can live without the extra 4hz of low end the Apollos produce, I don't think you will be disappointed at all with purchasing the Helix's.
I built my own boxes because I needed a front ported design. My speakers need to be in the corners of my room and its been known to get kinda boomy with rear ported speakers. I ended up placing the front port on the bottoms. The dimensions for the ports are .625 inches tall by 9.5" wide (width of baffle) by 6" deep and are flared in the front. I have them filled with about half a pillows worth of polyfill. Jeff Bagby did a great job designing these speakers, they sound wonderful, Thanks Jeff! They sound great with music and sound even better for HT use. I mainly use these for HT and gaming and I am very pleased. The Left to Right swings in sound are flawless and that bass is tight and accurate. This is exactly what I was looking for. I can only imagine what they will sound like once I get myself a good subwoofer.
They have replaced a pair of Fusion-12 tempests and a quad center. TBH, I really cant tell a difference in bass reproduction from the Tempest to the Helix. The Helix do 40 hz really well. To compare the dome tweeters to the compression drivers of the tempest, I would have to say that the compression drivers are clearer, but not by much. The compression driver has a slightly better phantom center when running 2 channel, but not super noticeable, the helix does a nice phantom center as well. But, where the dome takes that CD is in vertical dispersion. I feel that the CD loses that soundstage if you stand up form your main LP. If you stand form your LP with the dome, your listening image doesnt disappear as much. That is about the only big difference I can think of. My speakers before the tempests had dome tweeters and I would get ear fatigue listening for an extended periods. The Helix's domes dont give me fatigue, which is nice. No one likes to feel like theyre getting punched in the ears. The domes for the Helix's are really nice, I have been very happy with them.
Thanks Jeff for designing such a wonderful speaker. Im sure I will get many years of joy from these.
Thanks Erich once again for your help, you have been great in answering all my oddball questions. Im sure you also laugh yourself to sleep every night knowing that we all have to unbox the overflow of styrofoam bits that ever so perfectly keep our precious speakers kits intact when you ship them to us. I salute you sir, you are a master at your packaging craft. -
No Need For A Sub with this kit review by Kenneth on 11/28/2018
After spending many hours listening to this kit I removed my sub. And I can't tell its gone. They even sound better with out the sub . https://www.youtube.com/watch?time_continue=19&v=RqGE-PWDa-o https://www.youtube.com/watch?v=sZ3v4jw6sb8
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Best MTM Kit out there review by Kenneth on 11/23/2018
First of all where can you buy a speaker kit that you can approach the seller (Erich) and the designer ( Jeff Bagby)? I researched this kit for months and contacted Erich and Jeff multiple times before I bought this kit. High quality custom woofers worth every penny and then some. Kit was packed extremely well. The printed circuit board made for a professional looking cross over. Another thing well worth getting with your kit. First sound impressions. WOW listening in 2 channel stereo playing vinyl (July Talk) at 1/2 throttle for 10 min. I couldn't resist and had to go 3/4 throttle and they sound great .....Vocals sharp and clear and bass nice and tight . They hit the highs and lows on target . Thank's Erich and Jeff I will have many hours of listening pleasure on these great speakers.
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Great first DIY build review by Ryan on 6/26/2018
I built the Helix MTM speakers over a two day period. The flat packs are cut with extreme precision making assembly quick and easy. I only had to use 3 clamps to put the enclosures together. After I built the speakers I had some strange distortion when listening to certain songs, Erich took a fair amount of time answering my questions and helping me get the problem resolved ( it was my source not the speakers). So after finding another source that didn't distort I was able to sit back and listen. The speakers are very open and detailed with good imaging and sound stage. I will be writing up a more detailed review with measurements on AVS forum in the next few weeks.
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