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Title: For those with too much gain and 0.9u ... Post by: PeterSt on February 17, 2008, 02:12:00 pm ... do NOT solve this by means of a resistor of any kind now matter how good you think it is. It will immediately destroy everything.
In the mean time let me work on the next project : allow for more attenuation with the same number of bits. Can I do that ? Title: Re: For those with too much gain and 0.9u ... Post by: SeVeReD on February 17, 2008, 08:58:40 pm hiyall/Peter
Well after being sick a big part of this winter, I'm finally able to breath/hear well again with opened up sinuses. I have not installed the new player yet as I've been messing with other parts of the system (new usb cable eval) and wanted to get a handle on that first... but today is the day to try it. My "preamp" is also my electronic xover for the speakers. It's from Pass Labs, the xvr1 (of course someday peter is going to allow me to get rid of this when he adds xover control to XXHE... aren't you Peter hehe). Anyway, I've always had to mess with 4 volume controls when I change the volume (two for low end and two for high end). I can't open all volumes up fully because the low end (bass) has to have more gain than the top high end... is this going to be a problem? By not being able to have full volume in my top end that will have resistors in the path.... guess this might influence phase is why I think you say "do NOT solve this by means of a resistor"... but I don't think I'll be able to help this :/ Well, I'm off to find a 6 pin to 9 pin firewire cable/converter to hook up another HDD. chk back later Title: Re: For those with too much gain and 0.9u ... Post by: PeterSt on February 17, 2008, 09:53:43 pm Oh Dave ...
I did not know that you used a setup like that. Quote (of course someday peter is going to allow me to get rid of this when he adds xover control to XXHE... aren't you Peter hehe) Well, since this is one of my own goals, you bet I will. Some day ... But this is way difficult (for me) and it needs the FIR filters that will, say, hold back on SQ as I expect it. But net ... I expect it to be better anyway. Difficult though anyway ... Ok. You could say that the least that resistor has to hold back, the better it is. Let's see first how *you* perceive the proposed setup. If it works for you for the better (maybe not 100%) we know it's worth while. It will be true that in the end all things have to "communicate" so indeed you might encounter that things are worse than before. Otoh, I don't see the difference with the "pile" of resistors my XOvers (still) have ... But maybe that's in another leage because it is consistent within itself (the loudspeaker as a whole fed by one "different" means only). Anyway, anxious to know what you learn from this ... Peter |