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> Dual or More Dynamic IEM/earbud/headphone Thread, a.k.a. DDM (Headphones)

wkkm007
post Oct 13 2012, 01:01 AM, updated 3y ago

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Dual

user posted image
By ClieOS
top: Phiaton PS320
up left to right:
Brookstone's Clear, Redgiant A03 Ossicle, TDK IE800, Fischer Audio Tandem
down left to right:
Radius HP-TWF11R, JVC HA-FXT90, SonoCore COA-805 Cindy, Panasonic RP-HV600

like majalah sekolah laugh.gif

QUOTE
Radius DDM = Dual diaphragm Matrix
It isn't 2 dynamic driver, but 1 driver 2 diaphragms.
Radius HP-TWF11R ‘W Pro’
Radius HP-TWF21
Radius HP-TWF-22r
New
Radius HP-TWF31 'W n°3'
Radius HP-TWF41 'W n°4'
Dual
QUOTE
QUOTE
~IEM~
JVC HA-FXT90
JVC HA-FXT90L2
Fischer Audio Tandem
Redgiant A03 Ossicle
Able Planet SI500
SonoCore COA-803
SonoCore COA-805 Cindy
Moshi Audio Clarus
Ocharaku Flat4-Kuro “玄”
Ocharaku Flat4-Maple “KAED" “楓”
Ocharaku Flat4-Sui “粋”
Brookstone's Clear
Denon AH-C300- Urban Raver
nocs NS600 Crush
TDK IE800
KEF M200
Brainwavz R1 by MP4 nation
Brainwavz R3 by MP4 nation
Maxell MXH-DD600
Audio Technica ATH-IM50
Audio Technica ATH-IM70
Audio-Technica ATH-CKR9
Audio-Technica ATH-CKR10
Havi B3-Pro1
Powerbeats by Dr. Dre
QUOTE
~Earbud~
Fanny Wang FW-BUDS-WHI Wang Buds
Koss KDE-250
Panasonic RP-HV600
QUOTE
~Headphone~
AKG K270
Phiaton PS320
Final Audio Design Muramasa VIII


Triple
QUOTE
QUOTE
~IEM~
JVC HA-FXZ100
JVC HA-FXZ200
QUOTE
~CIEM~
Unique Melody 3DD



For DUAL BA IEM thumbup.gif
http://forum.lowyat.net/index.php?act=ST&f=99&t=2371868&

This post has been edited by wkkm007: Mar 22 2016, 09:45 PM
Bonta-Kun
post Oct 13 2012, 08:36 AM

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Radius HP-TWF21

Able Planet?
tauruskong
post Oct 13 2012, 09:59 AM

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I tested the Denon ah-c300, the bass is simply wow
noobandroid
post Oct 13 2012, 10:04 AM

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NOCS dual dynamic NS600 Crush

user posted image
JonSpark
post Oct 13 2012, 11:14 AM

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which one is the cheapest? laugh.gif
Bonta-Kun
post Oct 13 2012, 11:16 AM

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QUOTE(JonSpark @ Oct 13 2012, 11:14 AM)
which one is the cheapest? laugh.gif
*
MP4Nation Brainwavz R1 promotion @ USD34.50 brows.gif
noobandroid
post Oct 13 2012, 11:17 AM

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QUOTE(Bonta-Kun @ Oct 13 2012, 11:16 AM)
MP4Nation Brainwavz R1 promotion @ USD34.50 brows.gif
*
use the promo code get another 5%, haha, but i dunno what the code is already.. forgot
JonSpark
post Oct 13 2012, 11:34 AM

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QUOTE(Bonta-Kun @ Oct 13 2012, 11:16 AM)
MP4Nation Brainwavz R1 promotion @ USD34.50 brows.gif
*
thats dirt cheap shocking.gif
ClieOS
post Oct 13 2012, 11:49 AM

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Here you go, try to name them all:

user posted image

I have the new NS600 Crush coming in as well, but currently stuck at local DHL office as they want me to pay tax first. Will have to go and collect it on Monday. R1 will probably come sometime next week as well. The new Denon is a bit too expensive for me at the moment since I need to spend money elsewhere, but hopefully I can save up enough for a pair early next year.

Is it obvious that I am a bit of a dual dynamic fancier? tongue.gif

This post has been edited by ClieOS: Oct 13 2012, 11:51 AM
noobandroid
post Oct 13 2012, 11:55 AM

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QUOTE(ClieOS @ Oct 13 2012, 11:49 AM)
Here you go, try to name them all:

user posted image

I have the new NS600 Crush coming in as well, but currently stuck at local DHL office as they want me to pay tax first. Will have to go and collect it on Monday. R1 will probably come sometime next week as well. The new Denon is a bit too expensive for me at the moment since I need to spend money elsewhere, but hopefully I can save up enough for a pair early next year.

Is it obvious that I am a bit of a dual dynamic fancier?  tongue.gif
*
phanton is dual dynamic?
tauruskong
post Oct 13 2012, 12:03 PM

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I odered denon ah-c300 from sound electronic which have 30% discount currently (269sgd-30%)
ClieOS
post Oct 13 2012, 12:17 PM

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QUOTE(noobandroid @ Oct 13 2012, 11:55 AM)
phanton is dual dynamic?
*
Phiaton PS320 - co-axial dual dynamic with tweeter + mid/bass driver nod.gif
tunertoobe
post Oct 13 2012, 12:23 PM

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QUOTE(ClieOS @ Oct 13 2012, 11:49 AM)
Here you go, try to name them all:

http://i90.photobucket.com/albums/k240/ofe...dualdynamic.jpg

I have the new NS600 Crush coming in as well, but currently stuck at local DHL office as they want me to pay tax first. Will have to go and collect it on Monday. R1 will probably come sometime next week as well. The new Denon is a bit too expensive for me at the moment since I need to spend money elsewhere, but hopefully I can save up enough for a pair early next year.

Is it obvious that I am a bit of a dual dynamic fancier?  tongue.gif
*
I am so jealous. I WANT ALL OF THEM!!
wkkm007
post Oct 13 2012, 12:38 PM

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QUOTE(tunertoobe @ Oct 13 2012, 10:23 AM)
I am so jealous. I WANT ALL OF THEM!!
*
gotta catch 'em all DDM


Added on October 13, 2012, 2:50 pm@ ClieOS
in ur photo there are afew model not in my list, can u or some here tell me the model?

Final Audio Design Muramasa VIII 8k USD also Dual dynamic brows.gif

This post has been edited by wkkm007: Oct 13 2012, 02:51 PM
Bonta-Kun
post Oct 13 2012, 03:25 PM

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QUOTE(noobandroid @ Oct 13 2012, 11:17 AM)
use the promo code get another 5%, haha, but i dunno what the code is already.. forgot
*
fb2012fiver? tongue.gif btw anyone order brows.gif can tumpang? tongue.gif


Added on October 13, 2012, 3:37 pm
QUOTE(wkkm007 @ Oct 13 2012, 12:38 PM)
gotta catch 'em all DDM


Added on October 13, 2012, 2:50 pm@ ClieOS
in ur photo there are afew model not in my list, can u or some here tell me the model?

Final Audio Design Muramasa VIII 8k USD also Dual dynamic brows.gif
*
White with A03 - Redgiant A03 Ossicle
Black with Red circle - Fischer Audio Tandem

Few more notable DDM like Able Planet SI500

This post has been edited by Bonta-Kun: Oct 13 2012, 03:37 PM
tunertoobe
post Oct 13 2012, 05:55 PM

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QUOTE(wkkm007 @ Oct 13 2012, 12:38 PM)
gotta catch 'em all DDM


Added on October 13, 2012, 2:50 pm@ ClieOS
in ur photo there are afew model not in my list, can u or some here tell me the model?

Final Audio Design Muramasa VIII 8k USD also Dual dynamic brows.gif
*
It's also my dream of collecting them all. My first and only dual dynamic was the HP-TWF11, a.k.a DDM. Loved the bass and mids. The treble made electric guitars sound a bit veiled and "underpowered" though. For piano, cellos, acoustic guitars, or any other organic strings they sound wonderful, and so do drums. Great when paired with my Fuze+, and not so great with my Hifiman HM-601 (although it improved the bass presentation).

I'm aiming for the JVC, the Fischer Audio and the second gen from Radius, or any updated models. My first priority ATM though is building up my body, so those would have to wait. tongue.gif

The Muramasa is sadly cancelled, since its asking price is just absurd, and the production cost exceeded their expectation.

EDIT: Grammar fix. laugh.gif


Added on October 13, 2012, 6:11 pm
QUOTE(ClieOS @ Oct 13 2012, 12:17 PM)
Phiaton PS320 - co-axial dual dynamic with tweeter + mid/bass driver  nod.gif
*
Co-axial ay?
So it's just like the DDM, only with a slightly less fancier name.

This post has been edited by tunertoobe: Oct 13 2012, 06:11 PM
walabies
post Oct 13 2012, 09:52 PM

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That's an impressive collection of Dual Driver Monitors
ClieOS
post Oct 13 2012, 10:31 PM

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QUOTE(wkkm007 @ Oct 13 2012, 12:38 PM)
gotta catch 'em all DDM


Added on October 13, 2012, 2:50 pm@ ClieOS
in ur photo there are afew model not in my list, can u or some here tell me the model?

Final Audio Design Muramasa VIII 8k USD also Dual dynamic brows.gif
*
Beside what has been mentioned, there are also Fischer Audio Tandem and the vintage Panasonic RP-HV600 in the picture. Technically HV600 isn't a dual dynamic, but dual diaphragm single dynamic (talking about vintage - AKG K270 is a full sized dual dynamic as well). The white and silvery grey one is Sonocore Cindy.

Beside Able Planet and Brookstone's Clear dual drive earbuds, which used the same type of driver as DDM, there is also Moshi Audio Clarus. They are using what I call 'Polar Co-Axial', since the two drivers are in polar position instead of facing the same direction like typical co-axial.


Added on October 13, 2012, 10:41 pmForget to add: Ocharaku Flat4-SUI - this IEM uses one of the dynamic to cancel unwanted peak and resonance of the other. Kind of weird of how it works and it is also very expensive (>US$400)

This post has been edited by ClieOS: Oct 13 2012, 10:41 PM
wkkm007
post Oct 14 2012, 12:54 PM

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I feel there are more Dual BA then dual dynamic IEM.
ClieOS
post Oct 14 2012, 02:00 PM

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QUOTE(wkkm007 @ Oct 14 2012, 12:54 PM)
I feel there are more Dual BA then dual dynamic IEM.
*
Yes for sure.

Here are just a few I can think of:
Apple dual driver (ADDIEM)
Audio-Technical CK10, CK90
Brainwavz B2
Creative Aurvana In-Ear 3
Earsonics SM2 / SM2 V2
EXS X20
Fischer Audio DBA-02 / DBA-02 MK2
Galaxy Audio EB10 (same as OSP EU-6)
j-phonic K2 SP / MX
JAYS q-JAYS
Klipsch Custom 2 / Custom 3
Phiaton PS200
Phonak PFE232
Rock It Sounds R-50
Shure E4c / SE420 / SE425
Sony XBA-2
TDK BA200
Ultimate Ears UE700 / super.fi 5 pro (same as M-Audio IE-30)
VSONIC GR01
Westone UM2 / W2

... these are not counting dual BA custom and some universal trhat I can't remember / don't know, you can see how long the list goes.

Oh, forget to mention another dual dynamic - Koss KDE-250
tunertoobe
post Oct 14 2012, 07:54 PM

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QUOTE(wkkm007 @ Oct 14 2012, 12:54 PM)
I feel there are more Dual BA then dual dynamic IEM.
*
They are easier to make as they are smaller.
wkkm007
post Oct 14 2012, 10:27 PM

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QUOTE(tunertoobe @ Oct 14 2012, 05:54 PM)
They are easier to make as they are smaller.
*
but more pricey tongue.gif


Added on October 14, 2012, 11:43 pmif single dynamic IEM the list will be as long as china great wall tongue.gif
so far is there is a list of IEM?
Maybe can enter Guinness World Records
@ Clie OS ur collection maybe also can enter Guinness World Records rclxms.gif


Added on October 15, 2012, 1:31 am14 Dual Dynamic IEM vs 34 DUAL BA IEM whistling.gif

This post has been edited by wkkm007: Oct 15 2012, 01:46 AM
tunertoobe
post Oct 15 2012, 12:47 PM

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QUOTE(wkkm007 @ Oct 14 2012, 10:27 PM)
but more pricey tongue.gif


Added on October 14, 2012, 11:43 pmif single dynamic IEM the list will be as long as china great wall tongue.gif
so far is there is a list of IEM?
Maybe can enter Guinness World Records
@ Clie OS ur collection maybe also can enter Guinness World Records rclxms.gif


Added on October 15, 2012, 1:31 am14 Dual Dynamic IEM vs 34 DUAL BA IEM whistling.gif
*
That number may increase. As smaller dynamics gets better and better, manufacturers would be able to fit more into a single housing and possibly make multi-driver dynamics much easier and therefore more common to manufacture. Dynamics may have a ceiling (a limit) when it comes to size, I don't know. The smallest right now IINM is from HiSound Audio, the Crystal, at 5mm. Reviewers everywhere are raving about how good it sounds. Of course it doesn't have the bass to match bigger drivers, but I'm sure a few wackos out there are working on that. tongue.gif
phillip88
post Oct 17 2012, 04:10 PM

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Anyone tried Ah-C300 before? Very interested with that new Denon subwoofer beast. If the bass isn't overpowering the entire FR spectrum, then I might consider it.
tunertoobe
post Oct 17 2012, 04:27 PM

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Two 11.5 mm dynamics per earpiece.....damn. sweat.gif
wkkm007
post Oct 17 2012, 10:55 PM

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QUOTE(tunertoobe @ Oct 17 2012, 02:27 PM)
Two 11.5 mm dynamics per earpiece.....damn.  sweat.gif
*
Wow, that cool.
Off topic,
Denon AH-C400 MUSIC MANIAC this also another hot babe. Dual BA

This post has been edited by wkkm007: Oct 17 2012, 10:56 PM
tunertoobe
post Oct 17 2012, 11:12 PM

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Why does Denon claim that the AH-C300 as the world's first dual dynamic IEM?

This post has been edited by tunertoobe: Oct 17 2012, 11:15 PM
phillip88
post Oct 17 2012, 11:48 PM

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I think they claim it was their first. haha. But i'm really intrigued... How can they finetune their house sig into a bass monster.
tunertoobe
post Oct 18 2012, 01:14 AM

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QUOTE(phillip88 @ Oct 17 2012, 11:48 PM)
I think they claim it was their first. haha. But i'm really intrigued... How can they finetune their house sig into a bass monster.
*
We all know quite a few had already done it.
Panasonic made the first ever dual dynamic 'earbud', while Radius made the first dual-dynamic IEM.

I'm not even sure if they're the first with control-talk. IINM there's a DDM2 knock-off that has control talk and dual-dynamic as well. However having all the controls and even the mic at the earpiece itself is ingenious. Imagine that you;re taking a call and pressing on the earpiece. It makes you feel like a Secret Service agent. laugh.gif

Oh and BTW, I looked at the price of the new Brainwavz R1....oh yes I'm gonna get one. As soon as someone brings them here though. tongue.gif
wildwestgoh
post Oct 18 2012, 08:10 AM

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QUOTE(tunertoobe @ Oct 18 2012, 01:14 AM)
We all know quite a few had already done it.
Panasonic made the first ever dual dynamic 'earbud', while Radius made the first dual-dynamic IEM.

I'm not even sure if they're the first with control-talk. IINM there's a DDM2 knock-off that has control talk and dual-dynamic as well. However having all the controls and even the mic at the earpiece itself is ingenious. Imagine that you;re taking a call and pressing on the earpiece. It makes you feel like a Secret Service agent.  laugh.gif

Oh and BTW, I looked at the price of the new Brainwavz R1....oh yes I'm gonna get one. As soon as someone brings them here though.  tongue.gif
*
CODE
http://www.head-fi.org/t/631240/brainwavz-r1-review

Judging from this review, I assume this is "V" shape sounding?
Slightly tempted by the price (USD 34.50), can be under RM150 here if anyone does bring it in.
But from the official picture, the plastic looks a bit cheap? hehe tongue.gif Though the cable terminating end does looks good. thumbup.gif

This post has been edited by wildwestgoh: Oct 18 2012, 08:11 AM
tunertoobe
post Oct 18 2012, 08:12 AM

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QUOTE(wildwestgoh @ Oct 18 2012, 08:10 AM)
Judging from this review, I assume this is "V" shape sounding?
Slightly tempted by the price (USD 34.50), can be under RM150 here if anyone does bring it in.
But from the official picture, the plastic looks a bit cheap? hehe tongue.gif Though the cable terminating end does looks good. thumbup.gif
*
Heck, it's a dual-driver priced under USD40, something has to look cheap otherwise they're making it at a loss. laugh.gif
It's a dual bore design too, so that's unexpected from something at that price.

This post has been edited by tunertoobe: Oct 18 2012, 11:33 PM
wkkm007
post Mar 21 2013, 11:05 PM

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wrong post delete

This post has been edited by wkkm007: Mar 21 2013, 11:07 PM
wkkm007
post Aug 18 2013, 07:56 PM

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KEF M200
http://www.kef.com/html/en/showroom/mserie...ml#.UhC0uOUYZSc

http://www.head-fi.org/products/kef-m200-h...ck/reviews/9155
phillip88
post Aug 18 2013, 11:15 PM

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QUOTE(wkkm007 @ Aug 18 2013, 07:56 PM)
I personally tried it for a while. It gave me quite a pleasant bass response. Sufficiently good bass, and quite balanced signature.
Lego Warfare
post Aug 19 2013, 12:19 AM

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I'm interested in hearing the unique melody 3dd. Too bad no demo set/dealer in Msia
wkkm007
post Sep 26 2013, 04:39 PM

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http://www.inearmatters.net/2013/09/someth...ething-old.html

user posted image
phillip88
post Jul 25 2014, 11:15 PM

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wkkm007

Radius DDM = Dual diaphragm Matrix
It isn't 2 dynamic driver, but 1 driver 2 diaphragms. So, kinda awkward here LOL.
Latest version is TWF-22r (on my ears now icon_idea.gif brows.gif)

IEM:
Havi B3-Pro1
Powerbeats by Dr. Dre

VagueConcerns
post Jul 26 2014, 01:22 AM

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QUOTE(phillip88 @ Jul 25 2014, 11:15 PM)
wkkm007

Radius DDM = Dual diaphragm Matrix
It isn't 2 dynamic driver, but 1 driver 2 diaphragms. So, kinda awkward here LOL.
Latest version is TWF-22r (on my ears now icon_idea.gif brows.gif)

IEM:
Havi B3-Pro1
Powerbeats by Dr. Dre
*
Well yes and no I think. Yes they share the same magnet, but still each have their own voice coils.
I'm still unclear about the usage of a crossover though. But the "smear" (but really just an aggressive dip in that freq range which sounds a little off) in the high mids in DDM1 suggests something more than just simple parallel wiring. There's a "frequency divider" according to Radius, is that the crossover?

This post has been edited by VagueConcerns: Jul 26 2014, 01:24 AM
phillip88
post Jul 26 2014, 07:41 AM

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QUOTE(VagueConcerns @ Jul 26 2014, 01:22 AM)
Well yes and no I think. Yes they share the same magnet, but still each have their own voice coils.
I'm still unclear about the usage of a crossover though. But the "smear" (but really just an aggressive dip in that freq range which sounds a little off) in the high mids in DDM1 suggests something more than just simple parallel wiring. There's a "frequency divider" according to Radius, is that the crossover?
*
Aggressive dip in frequency range? Is there one? I didn't notice with this one now. Can you tell me more?

Yeah, the "frequency divider" looks very much like a crossover, but according to the picture, it looks like a magnet or something. I'm not proficient in speaker technology either.

But certainly, they claim it sound like hall. This one I think they achieved their objective. It really is spacious. Deep and wide with the reverb.
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post Jul 26 2014, 08:50 AM

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VagueConcerns
post Jul 27 2014, 02:22 AM

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QUOTE(phillip88 @ Jul 26 2014, 07:41 AM)
Aggressive dip in frequency range? Is there one? I didn't notice with this one now. Can you tell me more?

Yeah, the "frequency divider" looks very much like a crossover, but according to the picture, it looks like a magnet or something. I'm not proficient in speaker technology either.

But certainly, they claim it sound like hall. This one I think they achieved their objective. It really is spacious. Deep and wide with the reverb.
*
I'm having a hard time recalling and describing it.
Sometime the sound gets veiled, and then you can hear the two drivers each doing their own thing. I can sort of hear them "splitting up".
Incoherence is the word I think.

If I remember back the music I listen to when I notice it, it is somewhere in the mid frequency, but not sure of it's at the high-mids.

This post has been edited by VagueConcerns: Jul 27 2014, 02:23 AM
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post Oct 24 2014, 10:10 PM

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man, my TDK IE800 just lost sound in the right side. Anyone knows how to go about repairing it? I suspect its the cable/wire at the 3.5mm plug thats causing the problem. Because random jiggling of the cable there makes the sound reappear.
wkkm007
post Mar 22 2016, 09:46 PM

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http://www.radius.co.jp/en_product/hp-twf31/

http://www.radius.co.jp/en_product/hp-twf41/
VagueConcerns
post Mar 23 2016, 01:14 AM

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Yeah, went to their website a few days ago to see how they're doing. Those things look cool. They're using piezo now, but still retain the "co-axial" driver arrangement.
wkkm007
post Mar 23 2016, 01:21 AM

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QUOTE(VagueConcerns @ Mar 22 2016, 11:14 PM)
Yeah, went to their website a few days ago to see how they're doing. Those things look cool. They're using piezo now, but still retain the "co-axial" driver arrangement.
*
I tested out both model during CanJam Singapore 2016 cool.gif

HP-TWf31 more relaxing bass extension so far the best IEM I had listen deep and low end frequency.

HP-TW41 too much of detail analytical but for sting instrument can fight Shure KSE1500 brows.gif
bass extension deep and low end frequency same as HP-TWf31

This post has been edited by wkkm007: Mar 23 2016, 01:22 AM
VagueConcerns
post Mar 23 2016, 09:34 AM

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QUOTE(wkkm007 @ Mar 23 2016, 01:21 AM)
I tested out both model during CanJam Singapore 2016 cool.gif

HP-TWf31 more relaxing bass extension so far the best IEM I had listen deep and low end frequency.

HP-TW41 too much of detail analytical but for sting instrument can fight Shure KSE1500 brows.gif 
bass extension deep and low end frequency same as HP-TWf31
*
Nice. Pricing?
noobandroid
post Mar 23 2016, 10:38 AM

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i also remember hearing them at canjam, really not my thing so i cant comment too much

i haven't gotten myself to use my mee xduo gold until now, it's a dual dynamic
wkkm007
post Mar 23 2016, 12:55 PM

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QUOTE(VagueConcerns @ Mar 23 2016, 07:34 AM)
Nice. Pricing?
*
1.5k+- ~ 2.1k +- MYR

This post has been edited by wkkm007: Mar 23 2016, 12:57 PM
kimsim
post Mar 23 2016, 01:46 PM

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QUOTE(wkkm007 @ Mar 23 2016, 12:55 PM)
1.5k+- ~ 2.1k +- MYR
*
Japanese or China?
https://www.cool3c.com/article/104128

Where got selling it ?
noobandroid
post Mar 23 2016, 07:25 PM

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QUOTE(kimsim @ Mar 23 2016, 01:46 PM)
Japanese or China?
https://www.cool3c.com/article/104128

Where got selling it ?
*
we met the maker so we know what we are talking about, especially canjam attendees like me and wkkm

and the official website didnt give it away for you right?
kimsim
post Mar 23 2016, 07:44 PM

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QUOTE(noobandroid @ Mar 23 2016, 07:25 PM)
we met the maker so we know what we are talking about, especially canjam attendees like me and wkkm

and the official website didnt give it away for you right?
*
Cause never heard it b4, just simple search on google as well.

But just forget it..
VagueConcerns
post Mar 23 2016, 08:00 PM

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I remember the joy and horrors of owning the first DDM. Great sound, weird sound stage, horrible ergonomics.
ClieOS
post Mar 23 2016, 09:18 PM

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Listen to the new Radius on CanJam as well. Not particularly impressed, especially considering the price.
VagueConcerns
post Mar 23 2016, 10:24 PM

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Maybe they tried a little too hard on their new offerings.
ClieOS
post Mar 25 2016, 01:22 AM

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user posted image
Rose Technology Mojito
phillip88
post Mar 25 2016, 08:38 AM

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QUOTE(ClieOS @ Mar 25 2016, 01:22 AM)
Rose Technology Mojito
*
More on the sound, perhaps? Can't find info on this. thumbsup.gif
ClieOS
post Mar 25 2016, 11:33 AM

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QUOTE(phillip88 @ Mar 25 2016, 08:38 AM)
More on the sound, perhaps? Can't find info on this. thumbsup.gif
*
It is a super expensive (>RM900) dual dynamic earbuds, using vintage Panasonic bass driver. Neutral, airy, super detail and widest soundstage of any earbuds I have ever heard.

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