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JDS Labs C5/C5D (pg96) portable amp/amp+DAC appreciation + discussion thread - Page 6

post #76 of 2905
Quote:
Originally Posted by HybridCore View Post

Quote:
Originally Posted by miceblue View Post

In case anyone doesn't follow the Facebook post:
Yay Arduino! I'll be learning how to program in that soon for a club project.

Arduino? I'm really excited now. Arduino or Python = lots of programming fun. smile.gif
 I love how simple the two are.

So this is basically like a new variation of the Arduino base board. This is a lot of win right here.

Really curious as to how this performs in respect to other portable headphone amplifiers (O2 included).

Apart from adjusting how the volume control works, I wonder what else you can do with the Arduino code though.

*I just downloaded the Arduino programming software and it kind of looks like Java, although I only took 1 intro to Java class*
Edited by miceblue - 2/3/13 at 7:37pm
post #77 of 2905

Quote:
Originally Posted by miceblue View Post


Apart from adjusting how the volume control works, I wonder what else you can do with the Arduino code though.

*I just downloaded the Arduino programming software and it kind of looks like Java, although I only took 1 intro to Java class*

 

To keep physical size and cost minimal, re-programming requires a 6-pin header and any ISP programmerThe firmware directly controls volume attenuation, gain, LED(s), pushbuttons, and supply rail activation. This basically gives full control over the circuit and user interface. Most importantly, the volume control speed and taper can be modified, and the code serves as an opensource platform for new hybrid analog+digital amps.

 

So, we're giving the code away to the DIY community. Maybe it'll spark new ideas, or maybe not. Either way, it's entertainment!

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post #78 of 2905
Is the C5 available for pre-order? If so, please point me in the right direction.
post #79 of 2905
Quote:
Originally Posted by jseaber View Post


Quote:
Originally Posted by miceblue View Post


Apart from adjusting how the volume control works, I wonder what else you can do with the Arduino code though.

*I just downloaded the Arduino programming software and it kind of looks like Java, although I only took 1 intro to Java class*

 

To keep physical size and cost minimal, re-programming requires a 6-pin header and any ISP programmerThe firmware directly controls volume attenuation, gain, LED(s), pushbuttons, and supply rail activation. This basically gives full control over the circuit and user interface. Most importantly, the volume control speed and taper can be modified, and the code serves as an opensource platform for new hybrid analog+digital amps.

 

So, we're giving the code away to the DIY community. Maybe it'll spark new ideas, or maybe not. Either way, it's entertainment!

Woah, that sounds really neat! I can't wait to try it out.

 

Out of curiosity though, how is the gain digitally controlled? So far, both from what I've learned through the O2's gain settings as well as some electrical theory classes, the gain of a circuit is usually controlled through the physical components of a circuit.

post #80 of 2905
Quote:
Originally Posted by jseaber View Post

 

To keep physical size and cost minimal, re-programming requires a 6-pin header and any ISP programmerThe firmware directly controls volume attenuation, gain, LED(s), pushbuttons, and supply rail activation. This basically gives full control over the circuit and user interface. Most importantly, the volume control speed and taper can be modified, and the code serves as an opensource platform for new hybrid analog+digital amps.

 

So, we're giving the code away to the DIY community. Maybe it'll spark new ideas, or maybe not. Either way, it's entertainment!

post #81 of 2905

Another Facebook update for you guys:

For testing the C5:

Quote:
We use Grado SR-60i, Sennheiser HD-280 Pro, Beyerdynamic DT-880, several IEM's (16-32 ohms), and our dScope Series III audio analyzer.
 
...
 
The sets we use test the usable range of headphones you guys will present to the amps. IEM's cover high sensitivity, low impedance sets; Grados cover the bulk of the portable headphone market (32 ohms and moderate power demands); the 64-250 ohm sets test the desktop segment. And let's not forget the dScope. That box provides incredible data.

This sounds pretty promising for the C5 being a mini desktop amplifier (for most headphones that is).

post #82 of 2905
Thread Starter 
Impressive news, really can't wait for this!
post #83 of 2905
Quote:
Originally Posted by miceblue View Post

Woah, that sounds really neat! I can't wait to try it out.

 

Out of curiosity though, how is the gain digitally controlled? So far, both from what I've learned through the O2's gain settings as well as some electrical theory classes, the gain of a circuit is usually controlled through the physical components of a circuit.

 

MOSFETs take the place of switches.

 

 

Quote:
Originally Posted by burrrcub View Post

 

Getting close. We plan to open the preorder by next Friday (2/15).

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post #84 of 2905

Any indication of the price of c5?

post #85 of 2905
Quote:
Originally Posted by max111 View Post

Any indication of the price of c5?

I think I heard $200. Maybe I read that on FB? 

post #86 of 2905

under $200 from what i've read....still considering though, O2 or C5, SQ wise tho, coz i don't mind the bulky size of O2

post #87 of 2905
Quote:
Originally Posted by jseaber View Post
Getting close. We plan to open the preorder by next Friday (2/15).

Perfect timing. How many will be available for preorder?


Edited by RoMee - 2/6/13 at 2:36pm
post #88 of 2905
Quote:
Originally Posted by RoMee View Post

Perfect timing. How many will be available for preorder?

Taking in consideration the time JDS are in the market,plus the C421 unit sold since,and the O2 circuitry,i would say 720,25,that if the stock market won't go down until this week end.

Why ,you want to buy them all?

hahabiggrin.gif

post #89 of 2905
Quote:
Originally Posted by antberg View Post

Taking in consideration the time JDS are in the market,plus the C421 unit sold since,and the O2 circuitry,i would say 720,25,that if the stock market won't go down until this week end.

Why ,you want to buy them all?

hahabiggrin.gif

No, I just don't want to be involved in a "black friday" event where everyone stomp over each other for a couple of available units.

FiiO did that with the E12, so I just skipped the E12.

If JDS does the same than I'll just move on to the headstage arrow and wait until there's plenty of C5 in stock.


Edited by RoMee - 2/8/13 at 6:06am
post #90 of 2905
Thread Starter 

Well he's only making them available when they are made, not a limited number like E12 from what I know.

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