Roender's FC-100 prototype and builder's thread

[zsaudio]

Hello Rudi_Ratlos,

the psu board looks good too. I'm interested in that too.
Mounting the rectifiers onto the pcb maybe good idea but i will use external rectifiers because want to add more capacitance (I'm megalomaniac). But it's not an issue to modify the board for that.
I'm not in a hurry. I'm laying in my bed with broken leg so have time. (at least 3-4 weeks)
If there's nobody who wants the boards and can test it before me i take 2-2 pieces otherwise i wait for the second round.

Best Regards,
Zsolt

[Rudi_Ratlos]

Gentlemen,

I received the PCBs of METAL's and my layout of Mihai's FC-100 AMP today.
I have ordered 10 PCBs.

The components side:



http://www.abload.de/img/joe0223ca9f.jpg

The solder side:



http://www.abload.de/img/joe027mayoc.jpg

The quality and precision of these PCBs is extraordinary and flawless.

I have a special offer for the first two of you, who will join and "prototype" this PCB.

A propos "prototyping":
The PCB follows exactly Mihai's schematics.
I added a DC blocking capacitor on the frontend (which can be easily de-activated by means of a jumper) and a diode-rectifier section
on the backend (that can be bypassed as well), and I am absolutely sure that I did not do any layout-error.

My 1st offer is:



http://www.abload.de/img/joe030w0bcd.jpg

- 2 FC-100 PCBs
- 12 matched (HFe, VBe, <5%) transistors NJL0281DG / NJL0302DG
- 12 Futaba MPC74 0R22 emitter resistors
- 2 Vishay MKP1839 1µF capacitor
- 2 Vishay MKT1828 3.3µF input capacitor

incl. wordlwide shipping for 80€.

2nd offer:

- same as above but without emitter-resistors for 74€.

Maybe somebody of you likes to "join the party".

Best regards - Rudi_Ratlos

[AndrewT]

Rudi,
your attachments still don't open.

[meanman1964]

Originally Posted by Rudi_Ratlos

Gentlemen,

I received the PCBs of METAL's and my layout of Mihai's FC-100 AMP today.
I have ordered 10 PCBs.

The components side:



http://www.abload.de/img/joe0223ca9f.jpg

The solder side:



http://www.abload.de/img/joe027mayoc.jpg

The quality and precision of these PCBs is extraordinary and flawless.

I have a special offer for the first two of you, who will join and "prototype" this PCB.

A propos "prototyping":
The PCB follows exactly Mihai's schematics.
I added a DC blocking capacitor on the frontend (which can be easily de-activated by means of a jumper) and a diode-rectifier section
on the backend (that can be bypassed as well), and I am absolutely sure that I did not do any layout-error.

My 1st offer is:



http://www.abload.de/img/joe030w0bcd.jpg

- 2 FC-100 PCBs
- 12 matched (HFe, VBe, <5%) transistors NJL0281DG / NJL0302DG
- 12 Futaba MPC74 0R22 emitter resistors
- 2 Vishay MKP1839 1µF capacitor
- 2 Vishay MKT1828 3.3µF input capacitor

incl. wordlwide shipping for 80€.

2nd offer:

- same as above but without emitter-resistors for 74€.

Maybe somebody of you likes to "join the party".

Best regards - Rudi_Ratlos

Rudi,
I have interest in offer one

[Rudi_Ratlos]

Andrew,

I will try again.

Aren't the PCBs beautiful?

Best regards - Rudi_Ratlos

[zdr]

I am tempted to buy them just to hang them on the wall

[metal]

thanks zdr, u'r most welcome!

[RKH]

Rudi,
I am interested in your current offer. If by 'prototyping' , you mean that you would like someone to build quickly and report results, then it is likely that I won't qualify. Too many projects at hand.

Also, will you be offering more boards down the road?

Thanks,
Ryan

[vitalica]

Hi Rudi ,
I want to buy a kit to 80 euros. Can you send money through paypal?

Thanks.

[Rudi_Ratlos]

Vitalie,

thank you very much for your PAYPAL-transfer.
I will send you the components of my offer #1 tomorrow.

(The same applies to you, Patrick).

My offer #2 is still open.

I am currently thinking about the mechanical implementation of this AMP.
I will use what I have at hands:



http://www.abload.de/img/joe031znuaz.jpg

and like to install Mihai's shunt regulator and a speaker protection PCB (I will use a TRIAC - solution this time that will burn the fuse
in case of a DC / AMP defect, so that no relay will disturb the audio signal) on the heatsink as well.

I will keep you informed about my progress.

Best regards - Rudi