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Custom Art – Music Two – Appreciation/Discussion/Impressions/Review Thread
https://www.facebook.com/thecustomart/infohttps://www.facebook.com/thecustomart
http://www.thecustomart.com/
http://www.head-fi.org/t/663051/new-custom-iem-company-custom-art-discussion-review-and-appreciation-thread
Music Two:
• Dual BA (with Sonion AcuPass Technology)
• 2-way (single bore)
• vented driver in silicone
• advanced acoustic tuning (no passive dampers, stepped acoustic horn, vented woofer, back volume control)
ALWAYS keep your IEMs in OtterBox with drying pallet, when not used.
The Music Two uses a dual driver assembly with a single output port, damperless, with tube resonances controlled by a stepped acoustic horn. The woofer driver of the Music Two is filtered by an acoustic low-pass design, trademarked by Sonion as AcuPass. This type of low-pass technology is similar to that used in the Shure SE846 (just simplified). The Music Two's woofer is vented for better low frequency extension and headroom. Normally, the vented configuration of the woofer causes the bass response to rise well above neutral, but with a special construction method Peter controls the back venting volume, giving a small bass thump centered around 80-100 Hz, while preserving bass extension. As far as I'm concerned, no other company that uses silicone shell materials implements bass venting and back volume control. CustomArt started it with the Music One and Pro330, and now the Music Two has it.
With regard to tech specs, the Music Two has a minimum impedance (not including cable resistance/reactance) of 22 Ω @ 4200 Hz and DCR of 41.5 Ω. Impedance @ 1 kHz is 75 Ω, but that's just a transient value; the Music Two should be easy to drive from the most common audio sources.
People concerned about output impedance pairing with amps and DAPs should look at the 22 Ω value and pair accordingly. If we use the 8× damping factor rule-of-thumb, then OI should be no higher than 2.75 Ω on your sources. However, output impedance affects mainly only the mid-highs and lower treble of the Music Two. Here is a graph of the difference between the response of the Music Two when paired with a high output impedance source (~20 Ω), and a low output impedance source (~0.5 Ω, green trace). Depending on personal preferences, people can use different output impedance sources (e.g. CEntrance HiFi-M8, or serial resistance adapters) to alter the desired mid-highs.
With regard to bandwidth, +/- 20 dB tolerance would give the Music Two an effective bandwidth from <20 Hz to >17 kHz.
Originally Posted by piotrus-g /img/forum/go_quote.gif
Couldnt say it better. 100% correct sirOriginally Posted by jswansong /img/forum/go_quote.gif
Since so far there's no on who could answer that I will.
Music Two is basically an upgrade of Music One. Both share the same sound signature with Music Two having slightly more bass with even slightly longer notes' decay. Bass is still very controlled, but additional woofer does its job in providing better bass presence. It you read |joker|'s review of Music One you might have noticed that joker said Music One's bass in not a competitor for higher end IEMs - which of course is somehow true since single fullrange armature will have trouble squeezing out bass depth of say dual dedicated woofer. Music Two with vented woofer takes the bass up a nothc. Music Two also has more intimate mids that still offers similar brightness and details. Music Two has more highs comparing to Music One, however highs typically for Music series are non fatiguing. What Music Two gains is more realistic high-hats and cymbals' sound.
Improvement is also noticeable in resolution, soundstage and 3D effect.
Hope that helps you a bit more.
(Details on the website will be updated with the new layout - aim is to finish it in December)
If I'm reading this right, the Music Two has the same sound in the mids, albeit more detailed and refined, more bass presence and extension, and more treble crispness, extension and presence. So it's the same general idea of a lush, musical iem as the Music One, but more fully realized and technically capable. Am I right?![]()
I imagine a lot of it is trying to get the venting just right. As you know CustomArt is the only company to do vented drivers in silicone, and it goes beyond just boring out a hole behind the vent to let more air expand; the amount of volume displaced actually helps determine how much and where in the bass band the venting helps boost. I imagine he wanted to preserve the extra sub-bass while not boosting the rest of the bass too much. Fine-tuning that stuff is not easy to do! Silicone assembly is already complicated, and using venting just complicates it more --- these IEMs take quite a bit of time to get right.
The AcuPass driver is excellent (which is why so many are already using it, despite being a product that hasn't been released for more than 10 months) and I have confidence that the Music Two will sound excellent! I imagine it will outstrip many expectations of what a dual driver can do --- I've heard a number of demo incarnations of this driver and have been impressed in each case. The only few issues I've had with it is the relative lack of layered texturing in the bass region when the vent is closed (not a problem with the Music Two) and the slightly rough nature of the treble (silicone and the horn design will help in this regard, I imagine). Previously, I'd be considering getting a Pro210, but the Music Two is making me think twice, very hard.