APOX volume-input for Aleph P1.7 question - Page 2 - diyAudio
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Old 13th October 2009, 08:15 PM   #11
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Thanks Sheldon!

It is about bedtime for me over here... I'll fire it up tomorrow!
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Old 13th October 2009, 08:28 PM   #12
DougL is offline DougL  United States
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Quote:
I'm not sure if I understand the quote below.
(do you mean how to connect the pre-amp to the boaards?)
Yes, that is absolutely what I am talking about.

Doug
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Old 13th October 2009, 08:29 PM   #13
DougL is offline DougL  United States
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Quote:
Originally Posted by Sheldon View Post
You don't show the second IS1 board, but one connector goes where you have shown it with the question mark. I believe it can go in either position. Then the other connector is used to "daisy chain" it to the second IS1. I don't think you can hurt anything with these connections.

Sheldon

edit: Just notice Doug's reply. I concur.
Thanks.
Always happy to have a second pair of eyes.

Doug
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Old 14th October 2009, 07:39 PM   #14
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Quote:
Originally Posted by DougL View Post
Always happy to have a second pair of eyes.
That's right!

So I fired the whole thing up tonight. No smoke! Everything seems to work exept my power supply. Just found out my transformer is not big enough.
(only 1A and I need just a little more) I guess thats just a small problem.

Doug,

I think I know how to connect it to the preamp but I need to look in to this a bit more.

Thanks Doug and Sheldon for helping me out so far!
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Old 14th October 2009, 10:43 PM   #15
Sheldon is offline Sheldon  United States
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A small wall wart switching supply is a good choice here. Should be able to find something in the surplus bin somewhere. A 5V supply at around 1.5A should be pretty common.

Sheldon
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Old 15th October 2009, 04:20 PM   #16
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I had a printtransformer lying around and made a PS with a LM317 (kit from Dantimax). Problem was cooling down the LM 317. Bought a littleheatsink and now it works fine. I think I'm going to buy a transformer with less Volts. (12V to get 5V is not the way to go unless you want to cook your steak on the heatsink )
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Old 17th October 2009, 08:16 AM   #17
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It's time for the next question...

The dispay shows text that I would like to change. Also the brightness of the display is set very low. According to this link:
Apox Controls
it should be possible to change text and brightness.
As far as I understand this should also be possible without connecting a computer to it.

Is there a standard way to enter some kind of menu to make these changes?
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Old 17th October 2009, 06:05 PM   #18
Sheldon is offline Sheldon  United States
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Originally Posted by Leeuwarden View Post
Is there a standard way to enter some kind of menu to make these changes?
There is, but I don't remember exactly how to do it, and it's not detailed in the instructions (as you have found). I do recall, that it wasn't too hard to figure out. Just gotta start pushing and turning the controls on the digital potentiometers until you see the logic behind it.

Sheldon

Last edited by Sheldon; 17th October 2009 at 06:09 PM.
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Old 17th October 2009, 07:32 PM   #19
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After fiddling around for with the two rotary encoders I got it!
Was able to change text and brightness! Next step is finishing the Aleph 1.7.

Thanks for your help!
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Old 31st October 2009, 05:14 PM   #20
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Quote:
Originally Posted by Leeuwarden View Post

Click the image to open in full size.
Another problem i'm afraid :-( The APOX 1 volume board is not working (I think) The leds on APOX 1 (the volume board) are not burning. I suppose they should be burning to show the board is working (??). Could it be that I should place jumpers on JP1? (JP1 Is top left on the middle board) http://www.apoxcontrols.com/APOX1/apox1rev3.pdf
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