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"The Wiener" TPA3118 amplifier card
"The Wiener" TPA3118 amplifier card
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Old 16th February 2015, 04:03 PM   #21
gmarsh is offline gmarsh  Canada
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Location: Halifax, NS
Quote:
Originally Posted by erik777 View Post


Its a Wiener ! LOL
I wonder how many people get the reference

Quote:
Originally Posted by Krede :) View Post
Will you be doing any measurements on the board before it is put into production?
It would be really interesting to see the difference compared to some of the cheaper TPA3116 China boards out there.

Anyhow, count me in for 2 bare boards + controllers, please.
Thanks. Unfortunately I don't have access to Audio Precision gear to take a proper set of performance measurements.

Quote:
Originally Posted by kp93300 View Post
Gmarsh,
Can you give an estimate for shipping charges for one fully build up board to malaysia ?
thanks
kp93300
Assuming a 6x4x3" box, weight 1lb... Canada Post "small packet air" = $20.94, "small packet ground" = $11.02. No package tracking with either of these but I've never had them lose a package on me. Closer to $40 for something with tracking.
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Old 16th February 2015, 04:09 PM   #22
rhing is offline rhing  United States
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Count me in for a complete amp module.
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Rich
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Old 16th February 2015, 04:15 PM   #23
shadowlight is offline shadowlight  United States
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2 complete boards please, along with recommendation for case to install it in :-)
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Old 16th February 2015, 04:34 PM   #24
gmarsh is offline gmarsh  Canada
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Quote:
Originally Posted by shadowlight View Post
2 complete boards please, along with recommendation for case to install it in :-)
Hammond 1455L1601 is one recommendation. Bolt the card to the case using 1/8" standoffs, and I highly recommend putting this thermal pad between the PCB and the case:

H48-6G-20-20-4-1A t-Global Technology | 1168-1677-ND | DigiKey

Then install your choice of panel mount connectors, standby switch and LED on the end caps. The Wiener is 10cm long and this case is 16cm long, so you'll have ~3cm of space between the end caps and the edge of the board assuming you mount it dead center.

I might make an optional mounting hardware kit that includes screws/spacers/lockwashers/nuts/etc and this thermal pad, best guess is $10 CAD for the price.
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Old 16th February 2015, 04:55 PM   #25
cogitech is offline cogitech  Canada
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I've decided to just go ahead with a fully built and tested board. Please add me to the list.
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Old 16th February 2015, 05:07 PM   #26
bk856er is offline bk856er  United States
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"The Wiener" TPA3118 amplifier card
I thought I would compile a listing to make it easier for gmarsh to track. If he agrees, new additions please add your request and existing requestors please check that I copied your info correctly.

TPA3118 amplifier card expression of interest:

CFT; 2x fully built
nwboater; 1x fully built
bk856er; 2x bare PCB + 2x microcontroller
rol; 2x bare PCB
paugie; 1x fully built
Nickk; 1x fully built + 1x bare PCB + microcontroller
reo; 1x fully built + 1x soldered/tested TPA chip
Krede ; 2x bare PCB + 2x microcontroller
Darkstar52; 1x fully built
Joel Wesseling; 2x fully built
Atteren; 3x fully built
impuls60; 2x fully built
ronu9400; 1x fully built
canzld; 2x fully built
rhing; 1x fully built
shadowlight; 2x fully built
cogitech; 1x fully built
Hammett; 1x fully built
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Old 16th February 2015, 08:13 PM   #27
matt_garman is offline matt_garman  United States
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"The Wiener" TPA3118 amplifier card
Put me down for 1x fully built.

Thanks for all the hard work on this. Even though half the discussion was over my head, it was fun reading the design thread; a true community effort!
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Old 16th February 2015, 08:15 PM   #28
gmarsh is offline gmarsh  Canada
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Thanks for the summary bk856er! 22 fully built (edit: 23!). Once that number hits 25 I'll pull the trigger - it's been less than 24 hours since posting the thing so I'm pretty confident we'll hit that.

To elaborate on customization...

If you want to customize the board with different input caps or a different output filter configuration, here's the currently installed parts on the card and their Mouser price (I'm ordering all parts from Mouser)

Input film cap: Epcos B32529D225J 2.2uF/63V film - $0.96 CAD each at qty 100
Output filter cap: Epcos B32529C684J 0.68uF/63V film - $0.309 CAD each at qty 100
Output inductor: ICE Components 1D14A-100M - $2.17 CAD each at qty 100.

If you want a 15uH 1D14A-150M inductor instead, I'll be buying that part in qty 1 at $3.11/pop. So the price difference for that customization is ($3.11-$2.17)*4 = $3.76 untaxed, applying my 30% parts tax = $4.89 extra. Or for example if you want the input capacitors left off because you're using a transformer, subtract $0.96*4*1.3 = $4.99.
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Old 16th February 2015, 08:20 PM   #29
kp93300 is offline kp93300  Malaysia
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TPA3118 amplifier card expression of interest:

CFT; 2x fully built
nwboater; 1x fully built
bk856er; 2x bare PCB + 2x microcontroller
rol; 2x bare PCB
paugie; 1x fully built
Nickk; 1x fully built + 1x bare PCB + microcontroller
reo; 1x fully built + 1x soldered/tested TPA chip
Krede ; 2x bare PCB + 2x microcontroller
Darkstar52; 1x fully built
Joel Wesseling; 2x fully built
Atteren; 3x fully built
impuls60; 2x fully built
ronu9400; 1x fully built
canzld; 2x fully built
rhing; 1x fully built
shadowlight; 2x fully built
cogitech; 1x fully built
Hammett; 1x fully built
matt_garman : 1X fully built
kp93300: 1X fully built
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Old 16th February 2015, 08:58 PM   #30
cogitech is offline cogitech  Canada
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Gary,

For 4 ohm speakers, which inductors are most appropriate (10uH or 15uH)?

Also, I have some Russian 2.2uF 63v that I like using for input caps, but they are axial. With the board layout, I'd have to stand them on end. Is lead length critical here?

Last edited by cogitech; 16th February 2015 at 09:01 PM.
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