New MINI ZEN Headphone Amp PCB group order...

[r_jik45]

 

[khaho]

From post #54:

bom

Q3=2SC1815

I hope this helps to solve the pin orders for your transistors too.

 

[r_jik45]

Hi Khaho,

Thanks for your reply 😉

It appears that the 2SC1815 and the ZTX450/2N2222 do not have the same pin configuration!!!

Now I understand 🙂

 

[digi01]

very sorry for my slow response.I just come back from honeymoon.

the attached is the footprint of Q3 I am used.

all the best,
Zang

 

[r_jik45]

Hi Zang,

Never mind, the honeymoon was more important 😀

Thanks for your reply.
As I wrote just before, I did not realized that the pin configuration of Q3 you used is different than the one of ZTX450/2N2222.
Now things are clear 🙂

All the best...

 

[ChrioN]

Is this deal closed?

 

[tommytube]

mini Zen schematic???

I can't seem to find the schematic for the latest mini Zen board. Can anyone direct me to a link or post it please. I want to start on my boards tomorrow.

thx,
Tom

 

[digi01]

the sch attached.

Zang

 

[cloud]

Build question's from a newbe

Has anyone used a volume control with this amp? If so what size and how was it wired? Also can anyone recomend a good transformer to use, please give spec's!

 

[digi01]

cloud,
there are builder thread shoule be helps🙂

Z'

 

[Mrpong]

Hi Zang,

Do you have some PCBs available? I'm interested about two bare boards.

 

[digi01]

sorry mini zen v2 is stopped.
i am working on a dedicated mod,the new module will include pre stage.

zang

 

[A'af]

Zem headphone amp ver.1

hi folks,

i have some spare of this board for version 1, not the FR4 but CEM.

1 board for US$3 plus shiping stereo need 2 board. (discount work if you buy more than 10 boards)

if anyone want it, pls PM me.

thanks,
a'af

 

[sonidos]

C2 voltage value?

I just picked up two of these boards from another member on the forum. How critical is the voltage value in this circuit?

Can I get by safely with 50V? At first blush, the C6 and C7 caps are rated for 50 volts, so why 63V to 100V ratings? Was it just expediency at the time? Thanks in advance!

 

[sonidos]

nm - I see by the schematic that it should see about 24 V on the rail (not regulated though)...so I'm going with 50V caps minimum...talk about late to the party!😛

 

[r_jik45]

Oooold thread it is, but to the ones who build the version with power supplies and amplifiers on the same pcb (New MINI ZEN Headphone Amp PCB group order...), any news/outputs?

 

[xrk971]

It would be nice if the schematic image could be posted here directly. Any of those links to headwise seems to want to do a scan of my computer etc. Always a good practice to show the schematic for any project on Post 1.
Thanks,
X

 

[r_jik45]

xrk971,
The schematics is in post #148 (New MINI ZEN Headphone Amp PCB group order...).