I ran a small SOZ off batterys it was a pain keeping them charged. Trust me
you don't want to do it! If you do you need big deep cycle batteries and these
are expensive!
you don't want to do it! If you do you need big deep cycle batteries and these
are expensive!
I am interested in this as well.
As has been suggested in the F5 thread, four 12V marine (or similar) deep-cycle batteries, center-tapped to give +/- 24V.
Interesting reviews of a system powered by battery (albeit through an inverter)
diyparadise - Batts vs PSU
diyparadise - Monica2 and Batteries
I think adding a way to switch between batteries and standard mains would give the best of both worlds. Run on mains to warm up or while charging and switch to batteries for quality listening. However, I am not sure of the best way to integrate the two (i.e. reuse cap bank?)
As has been suggested in the F5 thread, four 12V marine (or similar) deep-cycle batteries, center-tapped to give +/- 24V.
Interesting reviews of a system powered by battery (albeit through an inverter)
diyparadise - Batts vs PSU
diyparadise - Monica2 and Batteries
I think adding a way to switch between batteries and standard mains would give the best of both worlds. Run on mains to warm up or while charging and switch to batteries for quality listening. However, I am not sure of the best way to integrate the two (i.e. reuse cap bank?)
My gut reaction - batts would be nice if you run with horns... otherwise, a real PIA. Inverters don't count, and imo are worse than the line unless they are really carefully made, which has got to be worse than making a regulated supply??
Batteries could be seen as very big and good capacitors?? 😀
_-_-bear
Batteries could be seen as very big and good capacitors?? 😀
_-_-bear
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Well the F5 isn't far off being a MOSFET Hiraga Monstre and that thing ran off batteries. Seems like a good starting point.
Help?? Help what?
Batteries will have no hum from the amp (the other stuff is your problem to deal with...) and HORNS reveal hum very nicely due to their sensitivity and efficiency. So for horns, battery power could be a true benefit.
Btw, Andrew, have you built one yet? 😀
_-_-bear
I'm not going to comment on the silly...
But, Horns can certainly have an advantage. The eff will determine weather or no tons of Class AB power is being used or only just within the Pq...
I'm running paudio 15 duel concentric 109 on the horn(thanks bear)and101 on the woofer and like it nice and quiet
a ClassA amplifier draws current from voltage to dissipate Pq.
If the load draws some power the PSU still supplies Pq but some goes to the load and the remainder goes to the heatsink.
replacing an inefficient speaker with an efficient horn does not save any battery power. It just keeps the heatsink running hotter because the load is soaking up less power.
ClassA biased to 1.3A per rail run from a battery is just silly.
I won't take it back no matter what other perceived or alleged sound quality improvements may accrue.
For what it's worth, The Beast With 1,000 JFets (actually
1,176 per channel) is coming up shortly, and it is a dream
at 13.8 volt rails....
😎
1,176 per channel) is coming up shortly, and it is a dream
at 13.8 volt rails....
😎
How true!
The F5 with mains power supply, CRC filtering, is absolutely dead silent.
Even with horn speakers.
Franz
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I think I'll come out with The Beauty with 8 Jfets with about the same +/- volt rails (SLA batteries)
I am at Vodafone NOC and there is a storehouse which have thousands of 24v 1000AH batteries for non stop communication systems.It was just a dream for me to use 2of that batteries for F5 amp.Just think how beautiful it sings 
🙂
🙂
The F5 that has been floating in and out of this place has had a number of variations on the PS, including serious choke filtering, and it is very very very quiet, but not absolutely dead quiet... although it is really really quiet.
Silliness is in the mind of the beholder - kinda relative to your ears and your system's capabilities...
So, Andrew, you built one yet?
_-_-bear
PS umut, two of those batts would be wonderful - how BIG are those?? You might try to get the pulls from some installations, since they will likely still be good enough to run ur amps... 😀
Silliness is in the mind of the beholder - kinda relative to your ears and your system's capabilities...
So, Andrew, you built one yet?
_-_-bear
PS umut, two of those batts would be wonderful - how BIG are those?? You might try to get the pulls from some installations, since they will likely still be good enough to run ur amps... 😀
Yea wonderful it is my dream 😀 Maybe one day i will get them 😀 They are about 1meter heighti think they are made of lithium polymer or sth like that 🙂
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