Taking orders :)

xcortes · 189136

0 Members and 3 Guests are viewing this topic.

Offline tjkirch

  • Newbie
  • *
    • Posts: 4
Reply #285 on: February 09, 2014, 08:08:29 AM
I really can't wait to see a BH DAC. I'm not sure how I'll be able to swing the price, but it's really exciting. Subscribed!



Offline mcandmar

  • Hero Member
  • *****
    • Posts: 1599
  • Not all engineers are civil
Reply #286 on: February 12, 2014, 04:04:25 AM
We are awaiting some boards that are in production.

Bump for a progress report :)

M.McCandless


Offline John Swenson

  • Full Member
  • ***
    • Posts: 114
Reply #287 on: February 13, 2014, 02:54:52 PM
We are awaiting some boards that are in production.

Bump for a progress report :)

We are still waiting for the (hopefully) final prototype boards from the board  house. I haven't heard anything  about them for a while. I have  a suspicion it is  the oscillator, they have to be programmed for the  specific frequency, that might be taking longer  than anticipated. If so, all we can do is wait. I'll ping them tonight and see what is going on.

I have the adapter boards, they came in right on schedule.

John S.

John Swenson
DAC designer
Well Tempered Record player -> Seduction
Moded Squeezebox->DIY DAC
BDT preamp->813 monster SE amp
DIY "Bazooka" Lowther speakers


Offline JamieMcC

  • Hero Member
  • *****
    • Posts: 1167
Reply #288 on: February 13, 2014, 10:26:02 PM
Has any guidance on enclosure size for the dac been given?

Shoot for the moon if you miss you will still be amongst the stars!


Offline Doc B.

  • Administrator
  • Hero Member
  • *****
    • Posts: 9649
    • Bottlehead
Reply #289 on: February 14, 2014, 04:41:37 AM
Enclosure size is still a moving target until we determine the battery we want to use.The battery we have been using lasts about 4.5 hours. Unfortunately the last Seattle Head Fi meet was 5 hours and we didn't have the Play While Charging setting in that prototype. We ordered a larger battery just to see how much longer it would extend play time and once we test it we will decide whether we go with the bigger battery.
« Last Edit: February 14, 2014, 04:46:44 AM by Doc B. »

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.


Offline mcandmar

  • Hero Member
  • *****
    • Posts: 1599
  • Not all engineers are civil
Reply #290 on: February 14, 2014, 05:10:19 AM
I can already see my first mod, building a battery bank for a 12 hour run time :)

Probably a silly question, will there be any issues shipping the battery's overseas?    Weight may be if they are SLA.

M.McCandless


Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 19732
Reply #291 on: February 14, 2014, 08:59:48 AM
I can already see my first mod, building a battery bank for a 12 hour run time :)

Probably a silly question, will there be any issues shipping the battery's overseas?    Weight may be if they are SLA.
We will very likely have a position on the power switch that will allow enough charging current in to both run the DAC and keep the battery topped off, as well as a dedicated listening position where it is battery only. 

Thankfully either battery that we are looking at falls into a class that flies under the radar in terms of shipping regulations.  Though the batteries themselves do weigh a bit, that weight isn't drastically different than something like one of our smaller power transformers. 



Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Grainger49

  • Hero Member
  • *****
    • Posts: 7175
Reply #292 on: February 14, 2014, 10:48:11 AM
Dan,

With my back I can't sit for 4.5 hours even in the La-Z-Boy.  I wonder if many can. 

If you have a charge while running position on the switch you are good to go for all the young guys.
« Last Edit: February 22, 2014, 09:47:14 AM by Grainger49 »



Offline John Swenson

  • Full Member
  • ***
    • Posts: 114
Reply #293 on: February 14, 2014, 05:18:21 PM
I talked to the board house today, the delay WAS getting the oscillators programmed, they have received them now and the boards are being assembled, they will ship next week!

I still have to write some FPGA code to get them up and running before I send to Doc. It shouldn't be much, this is mostly just bug fixes from the last one. The only real differences are the auxiliary port and the display, so I have to get those working.

John S.

 

John Swenson
DAC designer
Well Tempered Record player -> Seduction
Moded Squeezebox->DIY DAC
BDT preamp->813 monster SE amp
DIY "Bazooka" Lowther speakers


Offline RPMac

  • Full Member
  • ***
    • Posts: 220
Reply #294 on: February 15, 2014, 03:50:52 AM
Could batteries be bought locally to save the hassle of shipping?

How about a two battery system? One plays while the other charges.



Offline Paul Birkeland

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 19732
Reply #295 on: February 16, 2014, 06:44:23 AM
Could batteries be bought locally to save the hassle of shipping?

How about a two battery system? One plays while the other charges.

I'm not sure what the hassle is.  These are only 3-4 lbs. 

We do not plan to leave sufficient room under the chassis for a second battery. 

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Grainger49

  • Hero Member
  • *****
    • Posts: 7175
Reply #296 on: February 16, 2014, 06:59:34 AM
So the optional Optima battery is a DIY add on?

« Last Edit: February 22, 2014, 09:39:51 AM by Grainger49 »



Offline mcandmar

  • Hero Member
  • *****
    • Posts: 1599
  • Not all engineers are civil
Reply #297 on: February 16, 2014, 07:18:26 AM
Cue thread on how 200 AA batteries is a better bang for your buck :)

M.McCandless


Offline Jim R.

  • Hero Member
  • *****
    • Posts: 2194
  • Blind Bottlehead
Reply #298 on: February 16, 2014, 09:50:28 AM
My experience is that most of these specialty SLA batteries have to be bought from specialty distributors anyway, so one way or another you're likely to have to pay for shipping.

-- Jim

Jim Rebman -- recovering audiophile

Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).

s.e.x. 2.1 under construction.  Want list: Stereomour II

All ICs homemade (speaker and power next)


Offline Natural Sound

  • Sr. Member
  • ****
    • Posts: 998
Reply #299 on: February 16, 2014, 01:16:51 PM
A lot of my Ham Radio buddies have converted from SLA to LIPO batteries. They are smaller and lighter in size for equal or larger capacity. Not sure about the cost but I believe the LIPO's cost a little more.