Group order of non-inverted LM3875 pc boards? Anyone interested?

[roibm]

Hi there,

I am also interested in getting 4 complete channels(including ps), but as I live in Europe(Germany) I was wondering about the S&H costs...
Would you like to provide some details?

Thank you

[BrianGT]

Given the demand, given the current totals, I am seriously considering not to include the Blackgate capacitors with this group order, and only including the Panasonic capacitors, which are quite cheap in quantity.

It someone wants to take over a group order of Blackgate capacitors, this would be fine for me.

The main issue is, that 4 of these capacitors cost the same amout as the rest of the items in the kit, doubling the cost of a kit.

--
Brian

[BrianGT]

Originally posted by roibm
Hi there,

I am also interested in getting 4 complete channels(including ps), but as I live in Europe(Germany) I was wondering about the S&H costs...
Would you like to provide some details?

Thank you

As far as the S+H charges, I will look into this before I decide on shipping charges. I do not expect it to be unreasonable. If anyone here has experience of the best way to ship to Europe, let me know. I just used the US post office for mailing to UK last time.

--
Brian

[elizard]

this is for up to 2lb (possibly more too), from US to Germany by USPS.

global priority mail, 4-6day delivery, 6"x10" - $5
global priority mail, 4-6day delivery, 9.5"x12.5" - $9
Airmail letter post, 4-7day delivery, max length = 24", max length+height+depth = 36", 13.30

[Variac]

Looks like FC's are the will of the people. I didn't realize the price penalty for BG was so much. Heck, they are really easy to swap later. I still kind of prefer the insulated chips. Again, either will work, and I agree that you should settle on one or the other.
Looks like you are down to a choice of just the circuit board or one complete kit!

You are making big progress!

[Bas Horneman]

Just checking if I'm right on this..

2 * 4,7uF FC caps per channel?
4 * 1000uF FK caps per channel?

Cheers,
Bas

[fedde]

Originally posted by BrianGT

I am looking forward to having this amplifier in kit form for myself as well. I have several friends wanting their own gainclone amplifiers. I love an amplifier that you can build in several hours.

PCB's will be newest gainclone fashion...
It's true, you can build a gainclone now in an evening. In my opinion (and in my amp), PCB's even seem to sound better... (though I also interchanged a few parts)

Fedde

[BrianGT]

Originally posted by Bas Horneman
Just checking if I'm right on this..

2 * 4,7uF FC caps per channel?
4 * 1000uF FK caps per channel?

Cheers,
Bas

This is incorrect. The FC and FK capacitors are 1000uF capacitors, of which one pair is needed per board. The FK is the newer version of the FC, but only available in SMD package.

On the sheet, the capacitors go by channel, meaning one channel = 2 FC capacitors. It appears like it also would make more sense to just stick to FC capacitors to avoid confusion and lower the component count.

Now, on the power supply, I was planning on using 2*4.7uF FC capacitors also, which are not on the sheet, but will be included with the kit.

--
Brian

[BrianGT]

Originally posted by Variac
Looks like FC's are the will of the people. I didn't realize the price penalty for BG was so much. Heck, they are really easy to swap later. I still kind of prefer the insulated chips. Again, either will work, and I agree that you should settle on one or the other.
Looks like you are down to a choice of just the circuit board or one complete kit!

You are making big progress!

I am going to offer a choice of either the insulated or non-insulated chips for the lm3875.

I am going to make a website in a few days, to make all the details clear, once I get the kit information together.

3 kits seems to make sense now.. LM3875T kit and LM3875TF kit, along with a bare pcb.

--
Brian

[BrianGT]

I am working up the contents of the kits, and will have a new Wiki page up in a couple of hours. The initial list is here:
http://www.diyaudio.com/wiki/index.p...+for+NI+GC+PCB

and the new page for the next phase of this order will be put up in the same place as the first list:
http://www.diyaudio.com/wiki/index.p...CB+Group+Order

I should have something up by this afternoon, with all the details for the kit and order, and an initial cost estimate for the kits and bare pcbs.

--
Brian