SystemD LiteAmp

Member
Joined 2011
Paid Member
Liteamp Bridged ...

... mounting ... mass production ;)
 

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Member
Joined 2011
Paid Member
Customs regulations force me to restrict the group buy.
The required declaration data for shipping outside EU is so detailed, that I simply do not have reliable informations for most components.

KCS MB1 & KCS GB1 & KCS GB2 can only be send inside EU.
Outside EU I can offer only the PCB of the MainBoard.
In most cases the PCB of the main board alone will be unattractive,
especially because of shipping costs.
However I did not disclose the gerbers of the main board,
so this opens at least the option to get the PCB at all.

Please check the BOMs of my previous postings to see which components
you still will need to organize from other sources of your choice.


Main Board

PCB of main board only (like used in KCS MB1):
Costs: 2,43 EUR + Shipping


KCS MB1 (EU only):
Costs: 14,89 EUR + Shipping
PCB: Mainboard 50mm x 100mm
U1: IRS2092
Q6, Q7: IRFI4212H-117P
C20, C22: ELNA RJJ 470uF / 63V
C9, C10, C13, C14, C16, C17, C19, C21, C27, C28: 1uF/50V, 1206, X7R
C15, C16: 100pF, 500V, COG
L1: T106-2 + Wire
D3, D7, D8: MBR1100
D4: BAV21


Gain Board:

KCS GB1 (EU only):
The first 12 Sets will get the PCB for free, because it is
the PCB with the Silk Screen errors.
==> Costs for the first 12Sets 7,62EUR + Shipping.
PCB for free: Dated 17.10.2014 (Version with Silk Screen Errors)
C101, C102: 4.7u Film/Foil, 63V 7x7RM5
C110: 4u7/16V, Leakage < 0.5uA, D6RM2.5
Q1: 2SC5171, TO-220
Q2: 2SA1930, TO-220
R114: 1N4148WS, SM0805
U101: NSL-32
U102: OPA2134, DIP-8
U103: TL074, SOIC-14

KCS GB2 (EU only):
==> Costs: 9,61EUR + Shipping.
PCB: Dated 21.11.2014 (Silk Screen corrected, but untested)
C101, C102: 4.7u Film/Foil, 63V 7x7RM5
C110: 4u7/16V, Leakage < 0.5uA, D6RM2.5
Q1: 2SC5171, TO-220
Q2: 2SA1930, TO-220
R114: 1N4148WS, SM0805
U101: NSL-32
U102: OPA2134, DIP-8
U103: TL074, SOIC-14


Please post your request in this thread.
Simply say how many of which KCS you want to have.
I will collect your requests until Dec. 12th.
Let's clarify shipping adress, legal/customs and payment (direct bank transfer or pay pal) by PM.
After Dec. 12th I will post a summary of confirmed requests.
Then I will check and if necessary reorder components.
I hope to be able to use X-mas time and early Jan for packaging and ship before mid Jan.

Shipping will be by DHL.
Costs for shipping inside Germany: 4,99EUR
Costs for shipping inside EU: 13,99 EUR
Costs for world wide shipping: 30-50 EUR

Hi. I can buy a fully assembled and customized board ???
 
Customs regulations force me to restrict the group buy.
The required declaration data for shipping outside EU is so detailed, that I simply do not have reliable informations for most components.

KCS MB1 & KCS GB1 & KCS GB2 can only be send inside EU.
Outside EU I can offer only the PCB of the MainBoard.
In most cases the PCB of the main board alone will be unattractive,
especially because of shipping costs.
However I did not disclose the gerbers of the main board,
so this opens at least the option to get the PCB at all.

Please check the BOMs of my previous postings to see which components
you still will need to organize from other sources of your choice.


Main Board

PCB of main board only (like used in KCS MB1):
Costs: 2,43 EUR + Shipping


KCS MB1 (EU only):
Costs: 14,89 EUR + Shipping
PCB: Mainboard 50mm x 100mm
U1: IRS2092
Q6, Q7: IRFI4212H-117P
C20, C22: ELNA RJJ 470uF / 63V
C9, C10, C13, C14, C16, C17, C19, C21, C27, C28: 1uF/50V, 1206, X7R
C15, C16: 100pF, 500V, COG
L1: T106-2 + Wire
D3, D7, D8: MBR1100
D4: BAV21


Gain Board:

KCS GB1 (EU only):
The first 12 Sets will get the PCB for free, because it is
the PCB with the Silk Screen errors.
==> Costs for the first 12Sets 7,62EUR + Shipping.
PCB for free: Dated 17.10.2014 (Version with Silk Screen Errors)
C101, C102: 4.7u Film/Foil, 63V 7x7RM5
C110: 4u7/16V, Leakage < 0.5uA, D6RM2.5
Q1: 2SC5171, TO-220
Q2: 2SA1930, TO-220
R114: 1N4148WS, SM0805
U101: NSL-32
U102: OPA2134, DIP-8
U103: TL074, SOIC-14

KCS GB2 (EU only):
==> Costs: 9,61EUR + Shipping.
PCB: Dated 21.11.2014 (Silk Screen corrected, but untested)
C101, C102: 4.7u Film/Foil, 63V 7x7RM5
C110: 4u7/16V, Leakage < 0.5uA, D6RM2.5
Q1: 2SC5171, TO-220
Q2: 2SA1930, TO-220
R114: 1N4148WS, SM0805
U101: NSL-32
U102: OPA2134, DIP-8
U103: TL074, SOIC-14


Please post your request in this thread.
Simply say how many of which KCS you want to have.
I will collect your requests until Dec. 12th.
Let's clarify shipping adress, legal/customs and payment (direct bank transfer or pay pal) by PM.
After Dec. 12th I will post a summary of confirmed requests.
Then I will check and if necessary reorder components.
I hope to be able to use X-mas time and early Jan for packaging and ship before mid Jan.

Shipping will be by DHL.
Costs for shipping inside Germany: 4,99EUR
Costs for shipping inside EU: 13,99 EUR
Costs for world wide shipping: 30-50 EUR


Gosh this is so disappointing.. Look like its back to the drawing board for some of us.
 
Group Buy Closed

Collection of requests is now completed:

Gommer:
2x KCS MB1 and 2x KCS GB2

astx:
9 x KCS GB2

Carlington:
6 x KCS MB1

andreask:
2x KCS MB1 and 2x KCS GB1

irribeo:
2x KCS MB1and 2x KCS GB2


In addition I received three backstage requests, which makes me a little bit sad, because forums live from public communication. But of course I am respecting the wish of staying hidden.

My reorders of components are placed.
Most likely I will be able to send out the key component sets between X-Mas and new year.
 
Hey Choco,

I would definately be in for 1 complete set of Pcbs for 1 Amplifier (mono).

Actually I am a little bit confused concerning the amount and variety of available Pcbs - got a little bit off-track with this long thread.

Nevertheless I would not mind the silkscreen-errors, if there are still boards left.

thanks a lot,
Black
 
My thanks to Leo420 that you agreed on the cost free PCB for GB1.
So I can serve this request, even after the orders were out.

Black Chicken:
1xKCS MB1 and 1x KCS GB2 are possible from my orders.

Stammheim: :cheers: & good success for today

Gosh this is so disappointing.. Look like its back to the drawing board for some of us.
I found a way to send PCBs as registered letter with tracking for EUR5,60 (Hoping this is really correct).
And if I understand the customs form right, then I do not need to state the country of origin for each item, because I am not a business trader.
Few PCB and components I ordered in excess, so we might find a solution for two reduced sets (flat components).... Which components are most headache to get on your own?


Last but not least, I noticed that my component list of KCS MB1
misses out: C9, C10, C13, C14, C17, C18, C19, C21, C27, C28
Please be noted that they will be part of the KCS MB1.
 
No more KCS available

...should have started the group buy with the head line 'group buy closed'.
:magnet::magnet::magnet::magnet::magnet::magnet::magnet::magnet:

Since today the interest jumped up and this evening I had to send multiple PM to tell that now also my ordered buffer of PCBs and components are eaten up.
I am sorry, I cannot serve further requests.
 
Member
Joined 2011
Paid Member
Liteamp Bridged ...

... 8 + 1 amplifier modules assembled and ready for detailed measurements.
First tests showed: all amplifiers are working out of the box. :):):)

(Amplifier #0 - see southwest on picture - is a spare part and my reference part which has been measured also by Markus.)

BR, Toni
 

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@astx:
Your buidling quality and mechanics are always stunning!:up::up::up:

@irribeo:
In my building describtion I have four short wires aside the MosFets.
These short wires are connecting the heat sink with low inductance to
the GND plane of the PCB, for EMI reasons.
Downside of this is the fact that the heat sink is connected to GND,
which makes it more difficult to avoid humming GND loops when building a multi chanel amp.
Instead of wires it is possible to use small ceramic capacitors, which tie
the heat sink for HF to the GND plane, but allow LF floating.
 
Late Santa...

Today I sent out all the packages.
Please check your mail or PM for the tracking details.
Hope I collected and counted everything right.
If something is wrong or missing please let me know and I will
correct or balance it.

In total now there are 38 PCB and/or KCS for the main board somewhere floating in the world and 26 PCB and/or KCS for the gain board.
(Counted without my personal protos).

Looking forward to your builds and wishing everybody a great Happy New Year Party !
:cheers:
 

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