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Old 11th June 2009, 07:27 PM   #1
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Default Start a SOZ

Here the schematics...

Actual projects:
- SOZ,
- tube line and headphone preamplifier (LifePO4 batterie powered): waiting for the Sennheiser HD800,
- cheap EL34 SE for SABA greencones LS,
- and starting the big 845 SE amplifier.
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File Type: pdf soz-amplifier.pdf (32.9 KB, 203 views)
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Old 11th June 2009, 08:29 PM   #2
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Default next step

I am building HT and heather supplies with LifePO4 batteries.

I am thinking about to use this batteries to supply also the SOZ.
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Old 12th June 2009, 03:43 AM   #3
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Location: Tyrone Ga. U.S.A.
I tried a ~5W SOZ with batterys. I can't recomend doing this
the constant recharging realy shortens the batterys life unless
you go to some realy big batterys. In my case 4 7AH gell cells
gave me less than an hour of music and they died after about
30 charge discharge cycles because they were not deep cycle rated.
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Old 12th June 2009, 09:18 PM   #4
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Hello Woody,

google for LifePO4: this batteries are used in hybrid cars!

The balancing electronic is drawned. We are starting today the braining for the big power charger.
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Old 12th June 2009, 09:32 PM   #5
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here some interesting links for batteries:

shop.lipopower.de --> LifePO4 and balancing charger

endless-sphere.com/forums --> for more information about bikes or cars batteries
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Old 13th June 2009, 05:08 AM   #6
DaveM is offline DaveM  United States
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Location: Vermont
Regardless of their intended use, it is always best to drain a battery no more than half way. I have heard that the battery cycle used in a Prius is very very gentle on the batteries. Remember the 100,000 mile warranty on the batteries. They need to last. Even the best of deep cycle batteries will have shortened life if drained 100%.
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Old 13th June 2009, 09:04 PM   #7
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... the updated schematic.
Attached Files
File Type: pdf soz-amplifier_sch.pdf (26.7 KB, 106 views)
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Old 13th June 2009, 09:06 PM   #8
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... the PCB. Mono.

Input: BNC or directly wired to Cinch.

Output: WAGO or 6,3mm Faston (to Neutrik Speakon?).

Power: 6,3mm faston (to Neutrik Power-XLR); don´t forget, batterie powered!
Attached Files
File Type: pdf soz-amplifier_pcb.pdf (54.0 KB, 50 views)
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Old 13th June 2009, 09:08 PM   #9
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... the partlist, stereo.

I like:
- Mundorf capacitors,
- PRP resistors.

The batterie design with charger coming soon (starting wenesday).
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File Type: pdf soz_partlist.pdf (82.1 KB, 42 views)
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Old 13th June 2009, 09:10 PM   #10
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One printed circuit board in 8 working days = 42,40€.
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