AMB mini3 by hohodiy.com
Apr 6, 2009 at 4:31 PM Post #151 of 163
Ah I'm in the same boat. Although given some effort and time, perhaps reading a schematic wouldn't be too hard? The SS is really appealing to me because it's a lot cheaper than the other DIY desktop amps. Hey random question, how would you compare your Mini3 to your XXS?
 
Apr 7, 2009 at 10:37 PM Post #153 of 163
Quote:

Originally Posted by amb /img/forum/go_quote.gif
The answer is it would sort of "work", but you will suffer major performance loss. Its specified minimum supply voltage is 10V, but we have only about that much after the battery is just freshly charged, and will drop to around 8V-8.5V over most of the operating life of the charge.

The LM6172 is not rail-to-rail, it will give you no more than about 1.3Vrms output voltage swing into a mid-Z load (100 ohms) before clipping, and it gets worse into lower Zs. Contrast this to the AD8397, which will give you 3.2Vrms (mostly load invariant). With 10V supply voltage, the LM6172's maximum output current is about 25mA into 100 ohms (not specified at anything lower than that), whereas AD8397 can deliver up to 10x that (rated down to 25 ohms load).

Given this, the LM6172 won't drive high-Z or low-Z headphones effectively in the Mini³.



cool, thanks.
 
Apr 8, 2009 at 10:52 AM Post #154 of 163
I'm absolutely bored as hell, and itching to build an amp.

I think I might tackle the hohodiy neomini digiamp when I can get the money. Anyone interested in a tutorial?

Or maybe I should just build it and post impressions
tongue.gif
 
Apr 8, 2009 at 11:47 AM Post #157 of 163
Yea, do a step by step tutorial like that jac guy did for the mini3, and post impressions!
smily_headphones1.gif
Or you could just save up for the CTH..
 
Apr 9, 2009 at 5:39 AM Post #159 of 163
Jul 19, 2009 at 10:16 PM Post #161 of 163
Now hohodiy.com has gone, does anyone do full kits?

Otherwise I'll have to source most of the parts myself.
 

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