Beresford Bushmaster DAC

[Marco]

Guys,

Just so you know, Steve's excellent review has been moved to Strokes of Genius, where it deservedly belongs:

http://theartofsound.net/forum/showthread.php?t=18401

Great review, Steve!

Marco.

[nightyy]

I've been searching the two big threads now, and cannot find it:
Stan pointed to a PSU with battery capabilities (I think it was a link to Ebay)

Could you please lend me a hand on that one, i just cannot find it...

[StanleyB]

http://www.ebay.co.uk/itm/1807947135...84.m1423.l2649

[Martinh]

http://www.ebay.co.uk/itm/1807947135...84.m1423.l2649

Just one point, if it's a LiPo battery inside, the nominal voltage will be around 11.1v, not 12V. Straight off the charger, the voltage will quickly drop to 11.1v and stay there, then it will drop off rapidly at the end of it's capacity.

Probably doesn't make a difference, but I thought I'd mention it.

Hopefully the unit will have a low voltage cut off circuit to avoid over discharging (this quickly kills this type of battery).

Cheers,

[StanleyB]

I tested that battery for months and it doesn't drop off to 11.1V on connection. The Bushmaster will start to indicate a low battery state at 11.1V in any case. On top of that the Bushmaster will start to refuse to operate if the voltage drops below 11V, and stop altogether at about 10.5V. I have built that protection code routine into the software.

[worrasf]

[edit] To Steve, while you still have the Rega DAC

Can I ask please and since the facility is there, to try one or two of the different filter settings on the Rega (I think I've used filter "2" whenever I've used it). Ta muchly

--- I don't think I'm able to discern much of a difference in these filter settings, but I really would appreciate it if someone with more acute hearing could try this, if only once please

Hi David,

When I first got the REGA DAC I did indeed spend some time "playing" with the filters - there was a discernable difference between the 4 but I ended up sticking with filter 1 (whatever that is) as being the most satisfying overall. I certainly have not ever used different filter settings for different tracks or media.

Steve

[nightyy]

I tested that battery for months and it doesn't drop off to 11.1V on connection. The Bushmaster will start to indicate a low battery state at 11.1V in any case. On top of that the Bushmaster will start to refuse to operate if the voltage drops below 11V, and stop altogether at about 10.5V. I have built that protection code routine into the software.

Stan,
it seems you put a lot of effort into this kind of power/voltage management and monitoring. Do you yourself use the solution with a "intermediate" battery yourself?

I consider getting THAT ONE one. (EU plug, fast delivery from within germany, over-charge/discharge protection)
Should work all the same when in battery mode, right?

[worrasf]

Guys,

Just so you know, Steve's excellent review has been moved to Strokes of Genius, where it deservedly belongs:

http://theartofsound.net/forum/showthread.php?t=18401

Great review, Steve!

Marco.

Thanks Marco - just telling it how I hear it.

Steve

[Martinh]

Hi Stan,

My BM just arrived - magnificent service!

I tested that battery for months and it doesn't drop off to 11.1V on connection. The Bushmaster will start to indicate a low battery state at 11.1V in any case. On top of that the Bushmaster will start to refuse to operate if the voltage drops below 11V, and stop altogether at about 10.5V. I have built that protection code routine into the software.

Thinking about it, the current draw is probably not enough to pull the voltage down to the nominal.

Is yours definitely a Li-Po battery or a Li-ion? Li-ion is the preferred cell for domestic use, as Li-Po cells are less tolerant of charging/discharging abuse.

Cheers,

[StanleyB]

Is yours definitely a Li-Po battery or a Li-ion? Li-ion is the preferred cell for domestic use, as Li-Po cells are less tolerant of charging/discharging abuse.

I have to rely on the ebay seller who says it is li-po. But I have only had to charge mine three times since the beginning of the year. It seems to last forever once charged...