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Dc for power supply

Anyone use 12v or 24v car battery as dc power supply for home audio.   Or even for filament on tubes.   I like to know if any members try different types of battery. Lithium, Lead Acid, NiMH, Agm, Gel etc... Can you tell me if it makes a huge differences on each type of battery. I like to use it to run my dc filament on a cd player. Please advise??
128x128zipost
randy-11
1,913 posts
 
noise - free power

I think the OP is a non-native English speaker and filament means something else

if so, go ahead and put a post in your native language below your response - somebody may be bi-lingual
noromance's avatar
noromance
1,780 posts
 
I tried using 2 x 12v lead acid 6Ah batteries in an ECC88 tube head amp (MC phono amp). It was quiet but sounded significantly worse with loss of air and dynamics. Reconnecting internal 24Vdc regulated solid state supply brought it back to life (but with a trace of mains ripple noise).

zipost's avatar
zipost OP
112 posts
 
Noromance: try using a higher ah.  Your ah is too low, you need at least 12v 68-150ah ( car battery). No need to worry about ah if you have a regulator that can do dc-dc drop.   
noromance's avatar
noromance
1,780 posts
 
@zipost Good point. Long time ago though. I did only use it for B+. Left heaters on AC psu. If I ever do DC, I'll use a car battery!

zipost's avatar
zipost OP
112 posts
 
Another point i also notice.   Not all 12dc car battey are the same, i strongly recommend Odyssey battery at least 80-175ah.   Even the new technology Lithium or even the lithium polymer, the sounds has no dynamics.  In audio, i strongly prefer just lead acid or Agm ( glass mat).  
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