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This is particularly an issue when we'd go to a show. The A/C noise at the hotels were really bad. The batteries were dead quiet every time.
Yep, it makes a difference. My highly modified Mac Mini has it's own 100 amp hour Power Sonic battery too. And the bigger battery makes even more of a difference on it. Not all batteries are the same either. Some brands aren't as good as others. And now that battery feeds a battery buss made by Dave Elledge. Then it's plugged into my Mac Mini. And that made an improvement as well.
Sure, but it doesn't cost $3k for a reasonable power conditioner or power cable either. Systems using my SurgeX have won best in show awards cost-no-object the last 2 years running, you can get them for well under $1k for a basic, stock model that will be just as effective at removing emi/rfi and eliminating surges. I've experimented with this a bunch using an Optima deep-cycle battery and all sorts of different capacitor arrangements. The truth is batteries are not as quiet as people might assume without filtering them, batteries have significant internal resistance, and they wear out over time. IME, a good linear power supply sounds just as good if not better than an optimized battery setup and doesn't have the disadvantages of needing a charger or periodic battery replacement. A linear supply like I linked to is very likely to sound better than any battery arrangement you can come up with and costs less too.
What are you basing the higher capacity recommendation on? Lower internal resistance of the higher capacity batteries??Dave.
What is the current draw of the Dodd preamp in question here?Dave.
Can you post the schematic of the preamp?This is not proprietary any longer, yes?Charles mentioned a 12Ah battery. Looking at the photographs, I don't see that. I see two selectable packs each with two UB1250 (5.0Ah batteries).....wired how??In series you still have 5.0Ah battery....in parallel a 10Ah battery.Dave.
It is proprietary and has never been shared.
I'm just curious....How is the high-voltage generated with this design?Dave.
Direct comparison is the only way for me to find out for myself. charles
Battery supplies provide a differentiation from other products on the market in that they catch the eye of fickle audiophiles. Some audiophiles like to make statements with the products they purchase. I get that. However, there isn't anything inherently superior about their design relative to a good linear power supply. Just like conventional power supplies they have issues/trade-offs....although a different set.Charles, if you build the right power supply, the performance of your unit will not be degraded at all.Dave.
Any idea if the provided charger will charge those 6 AH batteries?