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Old 31st August 2011, 09:07 AM   #1
diyAudio Member
 
Join Date: Aug 2011
Default O2 amp Australian parts GB

Hiya all - as discussed at length in the PCB GB thread and on my interest list this is the official thread for the Australian parts mini-GB.
At time of writing we have 17 parts orders and possibly one or two more - I'd love to see 20!

Cost!

My personal preference for volume pot replacement is the 20mm Bourns model with spline shaft (& matching knob). The total base BoM cost in singles with this change is $28.56. With the current figure of 20 parts kits, the cost per order is $26.60 exc ship.
Postage for parts only is $6.60 for regular & $9.20 for express post.
Including any extras (case, batteries, wallwart) it is $11.20 / $12.50 express. These use standard 3kg satchels so this is flatrate across Australia.
This brings the total per order to $33.20 with parts only and regular shipping.
Adding enclosures ($19.11), batteries ($10/pair if we GB them - see below), wallwarts and any extra gain resistors will obviously increase this total.
I will calculate your total per-order!

I'd love you to round this up if possible - it's still far, far cheaper than the single-order cost for bare-bones parts from Mouser, which is over $70, and any extra will help to cover my time spent on this and any unexpected expenses such as surprise paypal fees and extra postage / packaging costs.

I believe in quality of service and as such I'd like to be able to ship all your orders with individually packaged and labeled parts. I won't charge you for this. Unless you feel like buying me a drink!

Here is all the information I have so far.

If your name says "??? confirm PCBs" that means I don't know whether you've already ordered/paid through olli in his thread or if you need me to add one onto your order. If you are ordering boards through olli and are also getting a kit order from me you do not need to pay olli shipping costs. If you have already paid shipping I will work this out with olli.

I'd like to know who on top of this would like extra gain resistors (including the low noise versions).

The enclosure is available here at element14 Australia - pick and choose the colour you want. These ship free, and price reductions at quantity are minimal, so your best bet is to order your own - e14 accept credit cards & bank transfers (no paypal unfortunately).
EDIT - See next post!

If you would like to get your front panel machined on the cheap by a machinist friend (who happens to be one of the purchasers) - please let me know too. The cost at the moment is only a dollar or two apiece! (Much cheaper than the $17+ from FrontPanelExpress.)

At the moment I'm still looking for a good source for wallwarts / power supplies; if anybody knows where to get them cheap in Australia please let me know.

As far as I know eBay is the best source for batteries - they work out to about $15/pair if you buy them yourself, but I'm looking at this lot - which works out to a hair under $10/pair. I can then ship them in with the rest of your order. The catch - we need 10 people wanting batteries. No more or less, however if there's a little less I will take up the slack.

Payment (when cost is finalized)
I accept PayPal, and if you really need, I could accept a bank transfer.
I believe I can also accept credit cards using PayPal as a merchant if you do not wish to sign up for an account.

What I need from you:

  • Check your entry in the spreadsheet. If any details are incorrect advise me by posting here and I will update them.
    • Tell me your postcode ! so I can calculate shipping to you
  • Tell me if you have or have not ordered PCBs from olli - including if you paid postage.
  • Tell me what extras (if any) you would like - this includes:
    • Batteries
    • Wallwart
    • Front panel
    • Extra resistors (low noise / other gain)
    • Enclosure (if direct ordering from element14 is not an option for you)
  • Advise me of any other issues.
That's all folks!
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O2 amp Australian parts GB
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Last edited by BlueFusion; 31st August 2011 at 09:37 AM.
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Old 31st August 2011, 09:18 AM   #2
diyAudio Member
 
Join Date: Aug 2011
First question to ask of all of you who want enclosures and/or front panels!
Would you like to:

A) order parts from me & order the enclosure yourself, ship the panel to my machinist, who will engrave & drill it then ship it back direct to you at cost

B) order parts & enclosure from me, I will have all the panels done at once, which will save on shipping individual panels but may increase shipping the kit order to you (however I will try to be space efficient by packing your parts inside the enclosure).

Option B would probably save the most shipping cost overall and would simplify matters somewhat.
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O2 amp Australian parts GB
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Old 31st August 2011, 09:35 AM   #3
zeffa is offline zeffa  Australia
diyAudio Member
 
Join Date: May 2011
I'd prefer option B. As you said, its the simpler option & saves cost.
As for extras, I'm happy to get 2x enclosures, batteries, front panels, a few extra resistors (to change gain). I'll get the wallwarts myself from Jaycar.
Regarding postage, you should consider the AustPost/eBay flat-rate satchels. Works out to be about $5.75 for 500gm satchel & $9.70 for 3kg satchel (bit less if you buy more satchels), which is a bit cheaper than the satchels that you can buy in-store.

Also, much thanks for organising this!

Edit: Just saw the bit re PCBs. I've already ordered & paid Olli for 2 PCBs. I'm happy for him to ship it straight to you. With regard to the extra shipping fees, I'm happy for it to goto his beer/PCB bling fund.

Last edited by zeffa; 31st August 2011 at 09:41 AM. Reason: Info re PCBs
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Old 31st August 2011, 09:44 AM   #4
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Join Date: Aug 2011
Thanks for the auspost link - silly proxy here won't let me view it, so I'll check it when I get home. Sounds promising!
I've updated your entry - need to confirm - have you ordered PCBs from olli yet?
Edit - I also need to know which gain resistors you want and how many. I'd like Mouser partno's and qty from the BoM here. Thanks
Cheers
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O2 amp Australian parts GB
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Old 31st August 2011, 10:04 AM   #5
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Join Date: Aug 2011
Location: Perth, WA
Hey BlueFusion, thanks again for organising this!

I'm a noob as far as DIY goes, so as far as technicalities go I believe my input would be minimal. (sorry! everyone has to start somewhere though right?)

In regards to your question, option B sounds the most reasonable to me.

EDIT: In regards to the PCBs, I have ordered 2 from Olli and have already paid for shipping.. happy for him to ship it to you with the rest of the group.
Seeing how cheap the GB brings this down to, I'm seriously considering ordering two kits.. maybe one with extra gain resistors? can someone point me to the direction where this is discussed? thanks!

Last edited by AncientWisdom; 31st August 2011 at 10:08 AM.
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Old 31st August 2011, 10:59 AM   #6
polak is offline polak  Australia
diyAudio Member
 
Join Date: Aug 2011
Hi BlueFusion, thanks for doing all this, you definitely deserve to be shouted a drink or two.
I too think option B sounds very good and i would go for 2x of everything (batteries, wallwart, case, panel and any extras you mentioned) as i figure ill build 2 amps and keep a board spare.
Ive ordered 3 boards and paid for from Olli.
Cheers
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Old 31st August 2011, 11:28 AM   #7
diyAudio Member
 
Join Date: May 2007
Just to clarify my order:
I'm in for 2 x parts but only one pair of batteries and one wallwart as I'll be building one portable and one desktop version.
I've already paid olli for PCBs and shipping.
My post code is 2113.

Thanks!
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Old 31st August 2011, 11:37 AM   #8
Munga is offline Munga  Australia
diyAudio Member
 
Join Date: Jun 2011
Location: Canberra
Hi BlueFusion,
Thanks for this. I have submidded an interest form, but would like one set of parts+front panel+wall wart+extra low noise resistors and an enclosure. I have already ordered 2 PCB's from Olli and paid postage, but at the cost of the PCB's I don't care about reclaiming the bit of postage in any way. If you are in Canberra I'll surely shout you a beer!

Cheers,
Derek
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Old 31st August 2011, 11:51 AM   #9
diyAudio Member
 
Join Date: Jun 2010
I'm up for a full parts kit... all in the interest of laziness Till I was shown this thread (thanks Munga) I was wondering if I'd actually get around to ordering the parts for the 2 PCB's or just put them in my other pile of unfinished projects :/

Do you plan on ordering quality 1% resistors and decent caps?
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Old 31st August 2011, 12:20 PM   #10
ianrt is offline ianrt  Australia
diyAudio Member
 
Join Date: Jan 2008
Default O2 Amps GB Aus

Hi BF,

I have paid Olli for my two boards inc shipping (but I am unclear whether they will come through you, anyway).
Put me down for two sets of batteries.
For enclosures, my preference is option B (times 2).
Postcode is 3228

Thanks again for the great community spirit.

Ian



Quote:
Originally Posted by BlueFusion View Post
First question to ask of all of you who want enclosures and/or front panels!
Would you like to:

A) order parts from me & order the enclosure yourself, ship the panel to my machinist, who will engrave & drill it then ship it back direct to you at cost

B) order parts & enclosure from me, I will have all the panels done at once, which will save on shipping individual panels but may increase shipping the kit order to you (however I will try to be space efficient by packing your parts inside the enclosure).

Option B would probably save the most shipping cost overall and would simplify matters somewhat.
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