[ELP FAN]

Ryan
Thank you very much for your prompt e-mails recieved regarding my hum situation, i've ordered some lower value resistors as advised..What would be a good idea would to manufacture the PCB with two pairs of sockets where different value resistors can just be tightly slotted in/out by the owner to suit the Impedence of their headphones, so they can then easily do the job to suit any other phones they may want to use without resorting to a soldering iron.

I'll get back regarding the USB situation when i get back home, i'm gonna try it with a friends laptop.

Thanks again for your time.

 

[viodea]

I would rather have a flip switch if it doesn't effect sound quality.

 

[AcousticDreams]

Quote:

Originally Posted by viodea /img/forum/go_quote.gif I would rather have a flip switch if it doesn't effect sound quality.

Exactly, a bank of DIP-switches is much better for a general gain adjustment in this case, but they would have to change the layout at this part on the PCB. It makes the D1 more flexible for every headphone on this planet, without exceptions. A very high gain on the output isn't bad so far, if the remaining components are able to work with it. Putting resistors in a kind of slot is a very bad idea.

 

[ELP FAN]

Quote:

Originally Posted by AcousticDreams /img/forum/go_quote.gif Putting resistors in a kind of slot is a very bad idea.

you saying a chip in a chip base is a bad idea, only the same really.

 

[AcousticDreams]

Quote:

Originally Posted by ELP FAN /img/forum/go_quote.gif you saying a chip in a chip base is a bad idea, only the same really.

Sorry, but this is not the same. An IC is not a resistor! An IC has principally a more or less number of pins for a safe and stable connection with the system, even in a socket. A resistor is manufactured for a soldered connection. Only amateurs would seize to such a solution.

 

[u20v00a]

Hmmmm, switchable gain for the headphone amp...

Why is this sounding familiar?

But seriously, being able to adjust the gain with a two or three way toggle switch would be ideal.

 

[_Spanky_]

I don't know the layout of the D1 inside nor am I an engineer but wouldn't it be possible to take the wires for the headphone jack, route them to a new PCB with a dip switch and whatever other circuitry then back to the headphone jack for the gain? This wouldn't necessarily require a new main PCB layout, it would be an add-in. Low-cost to implement, I'm sure and possibly a DIY upgrade for current owners of the D1...

Of course some kind of switch on the front panel would be the most ideal but again I'm not an engineer so I wouldn't know what would be "better" for audio transmission. In any event if it was made as an upgrade to existing models and could be implemented by the owner via a simple mod, I think that would go over well.

 

[ELP FAN]

Quote:

Originally Posted by AcousticDreams /img/forum/go_quote.gif Sorry, but this is not the same. An IC is not a resistor! An IC has principally a more or less number of pins for a safe and stable connection with the system, even in a socket. A resistor is manufactured for a soldered connection. Only amateurs would seize to such a solution.

Better tell a certain audio high end company this then cos they used to do it.

the PCB resistor sockets in question are deep & tight, the resistor will not move, besides it's not a power resistor they are only 1W

 

[ELP FAN]

Quote:

Originally Posted by _Spanky_ /img/forum/go_quote.gif I don't know the layout of the D1 inside nor am I an engineer but wouldn't it be possible to take the wires for the headphone jack, route them to a new PCB with a dip switch and whatever other circuitry then back to the headphone jack for the gain? This wouldn't necessarily require a new main PCB layout, it would be an add-in. Low-cost to implement, I'm sure and possibly a DIY upgrade for current owners of the D1... Of course some kind of switch on the front panel would be the most ideal but again I'm not an engineer so I wouldn't know what would be "better" for audio transmission. In any event if it was made as an upgrade to existing models and could be implemented by the owner via a simple mod, I think that would go over well.

The headphone socked is a self contained unit solidered directly to PCB as is the 'Line In' socket, this PCB isnt the main board, it's a second slim PCB that runs the length of the facia.

 

[AcousticDreams]

Quote:

Originally Posted by ELP FAN /img/forum/go_quote.gif Better tell a certain audio high end company this then cos they used to do it. The PCB resistor sockets in question are deep & tight, the resistor will not move, besides it's not a power resistor they are only 1W

This makes no difference, this method is only acceptable as a temporary solution for prototypes, but never in a quality product. A lot of companies misuse the term "High End" because they don't expect customers with enough knowledge in hardware design.

 

[Remains]

Quote:

Originally Posted by JustVisit /img/forum/go_quote.gif In your window's control panel, select "Sounds and audio devices", in the "audio" tab, choose "USB audio" as your default "sound playback" device. Then you will get the audio from the USB.

ELP FAN, when I first plugged my maverick into my computer via usb no sound came out of it either. After doing what Ryan has just suggested here it still did not work until I right clicked on all other devices and disabled them until only the maverick was left. After that it worked smooth as butter. I'm not saying this will solve your problem though, it's only a suggestion.

On a separate note - I know this probably isn't the best place to ask but does anyone here have any experience setting up the maverick in linux, specifically ubuntu?

 

[_Spanky_]

Quote:

Originally Posted by Remains /img/forum/go_quote.gif does anyone here have any experience setting up the maverick in linux, specifically ubuntu?

From what I remember, and anyone is welcome to correct me on this, a lot of USB DAC's use the USB Audio 1.1 standard which should be implemented in just about every OS that recognizes USB. It's like a basic USB mouse or keyboard driver. I'm sure you can install your own modified driver to change the operation of the device but it should work out of the box.

 

[jpstereo]

Stupid question but I want to make sure before I move forward ... Can I plug the Maverick directly into powered speakers such as the AudioEngine 2 and use it as a preamp? - the Maverick of course would be connected to my laptop via USB.

Thanks!

 

[Remains]

Quote:

Originally Posted by _Spanky_ /img/forum/go_quote.gif From what I remember, and anyone is welcome to correct me on this, a lot of USB DAC's use the USB Audio 1.1 standard which should be implemented in just about every OS that recognizes USB. It's like a basic USB mouse or keyboard driver. I'm sure you can install your own modified driver to change the operation of the device but it should work out of the box.

Well after some fiddling around I got it working. Funny thing is that there is a noticeable difference in how my music sounds in linux compared to windows. One thing I have noticed is that lower bitrate mp3's that would otherwise sound fine in windows sound AWFUL in linux.

Ok we can get back to talking about the maverick now

 

[weibby]

Quote:

Originally Posted by jpstereo /img/forum/go_quote.gif Stupid question but I want to make sure before I move forward ... Can I plug the Maverick directly into powered speakers such as the AudioEngine 2 and use it as a preamp? - the Maverick of course would be connected to my laptop via USB. Thanks!

Use the Preout.