JH Audio JH-3A

[CanMad]

 
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In the digital domain. That makes sense, just like the equalizer of a DAP. Aren't all the inputs digital? And how many DACs it may have?

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I wonder why JH doesn't make the JH3A a DSP-only unit? This way everyone could use their favorite DAC(s)..

Well it needs to be an at least 6 channel DAC not many people have a 6 channel dac, at least one that 6 channels can be input, and it would no longer be a transportable option.  The DAC is on the same chip as the DSP.  It has analogue input as well,  the same chip that does the DSP and the multichannel digital to analogue conversion apprently can do Analogue to Digital conversion as well.
 

 

[wuwhere]

If that box gives, your IEM is silent until your box is repaired.

 

[cooperpwc]

Nice pics, ThEvilOne. (clicking through to full size)

 

[qusp]

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Don't you really need 6 amplifiers, 3/channel? It's really 3 stereo amps.

no, its 1x  6 channel amp , well actually who knows how matt has arranged that, the dac/DSP from cirrus has 6 fully balanced or pseudo differential line level outputs, whether matt fed these to 6 single channel opamps, 3 x dual opamps or a single class D multichannel amp is unknown.
 
I think some thinks to these explanations need to be added to the front page so they dont have to be explained to every new person that comes to the thread. I went through it in detail a few pages ago, but perhaps I used too much tech lingo or. I only stopped short of naming the actual chip, but i'm 99% sure I know which one it is.

 

[bneiderman]

I preordered this thing and have been talking to Matt via email so as to better understand the device and some technical things in general. The more I learn about what this thing is doing and how good the final version will sound the more I feel like Sonic! Just think that this thing sounded as good as it did at the show from an analog out from the Ipad. Just imagine it with coax in.

 The other funny thing is that I was at JHaudio getting my JH13's refit (I live fairly close) awhile ago when I first met Matt and Jerry and partially saw the "top secret" JH3A out of the corner of my eye. They would not tell me what it was but only said that what was hiding under the towel would be a game changer and now here we are!

 

[thread]

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I preordered this thing and have been talking to Matt via email so as to better understand the device and some technical things in general. The more I learn about what this thing is doing and how good the final version will sound the more I feel like Sonic! [...]

 
bneiderman, share! ...Anything interesting that hasn't already been covered?

 

[ThEvil0nE]

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I preordered this thing and have been talking to Matt via email so as to better understand the device and some technical things in general. The more I learn about what this thing is doing and how good the final version will sound the more I feel like Sonic!

So you were told how it would sound... so how would it sound?

 

[El_Doug]

if the DSP is indeed "tuned" for each IEM made, then surely a JH10X3 (which still has separate high, mid, and low drivers) would not cripple the system at all? 
 
sure, the flavor may be different - but many people report different sound signatures between the 13 and 16, and no one speaks ill of either of them
 
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Only the JH13 or 16.  Why would you want a lesser model and cripple the system?

 

[boomana]

I totally forgot about the existence of the JH10X3.  I supposed if you really wanted to go that route, you could talk to them and find out.

 

[cooperpwc]

Conversely, it seems from the feedback from Jerry and co. that this system may have been designed primarily for the JH16, giving full ability to dial bass up and down to taste. One has to wonder if even the JH13 option exists mostly to provide an upgrade path to early JH Audio customers.

 

[nc8000]

 
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Not saying anything about usability..
But how did no one touched the subject of how unfair the price is for existing customers. even if there's some modification to do, I don't see a reason why to charge for it.
Non the less.. would be interesting to see if some members would jump on a 2nd pair just for that and stick with the first for portability.

Have been offline for 2 weeks so this might have been covered but I don't think the price is all that unfair. I assume that the existing crossover has to be removed from the signal path and the only way I can see this happening is by breaking the shelles open and rewireing and/or removing the crossover and the rebuilding the earpices. This essentially means building a new earpice with all the work involved. Also the cable has to be at least reterminated or perhaps even replaced so the only thing that is being reused from the original phone seems to be the drivers.

 

[cooperpwc]

nc8000, I hve been wondering where you were through all of this.
 
Welcome back. You are right and even the bass drivers are a write-off (although they are implying that the shell can be reused).

 

[kunalraiker]

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Have been offline for 2 weeks so this might have been covered but I don't think the price is all that unfair. I assume that the existing crossover has to be removed from the signal path and the only way I can see this happening is by breaking the shelles open and rewireing and/or removing the crossover and the rebuilding the earpices. This essentially means building a new earpice with all the work involved. Also the cable has to be at least reterminated or perhaps even replaced so the only thing that is being reused from the original phone seems to be the drivers.

nice point.

 

[warp08]

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nc8000, I hve been wondering where you were through all of this.
 
Welcome back. You are right and even the bass drivers are a write-off (although they are implying that the shell can be reused).

There will be a lot of drivers written off for sure.  Apparently those proprietary BA drivers are very sensitive to the heat coming from the soldering iron.  There is a high failure rate any time they need to rewire them as part of a refit/reshelling exercise.  They have a high success rate during initial assembly, but each subsequent attempt to reuse the drivers in a different configuration (such as ripping off the passive XO board from the shells) the risk of driver failure goes up exponentially.
 
No doubt, this has been factored into the pricing.

 

[lewis.dn]

A little bit confused...I got my JH13s at the start of the year, what is the mod fee for this new amp? Am i right in seeing $1099 for existing customers? I guess that means they have to remake the IEMs, correct?