Sonsivri
 
*
Welcome, Guest. Please login or register.
Did you miss your activation email?
September 20, 2017, 08:10:12 20:10


Login with username, password and session length


Pages: [1]
Print
Author Topic: Silent Screams - An OPA1622 Headphones amplifier  (Read 390 times)
0 Members and 1 Guest are viewing this topic.
thunderer
Junior Member
**
Offline Offline

Posts: 56

Thank You
-Given: 19
-Receive: 63


I try to be patient


« on: July 20, 2017, 02:11:51 02:11 »

Not so many on the Internet, so here is my version.

Some photos from different stages of the construction.





NB: As seen, I gave up using the cheap 3.5mm jack. Opted for a Neutrik better quality in 6.35mm.

Eagle files attached.
Logged

Interested and hopefully helpful in: DC brushed motor control (mainly R/C - PPM/PWM), analog audio, PIC (mikrobasic PRO). Feel free to ask, and if I can, I will help. But only on forum topics, any started private conversation will continue in a public topic.
optikon
Cracking Team
Hero Member
****
Offline Offline

Posts: 666

Thank You
-Given: 561
-Receive: 1834


« Reply #1 on: July 20, 2017, 11:20:42 23:20 »

How did you make the front panel ?.. looks pretty nice for a 1 off project box
Logged

I can explain this to you. I can't comprehend it for you.
thunderer
Junior Member
**
Offline Offline

Posts: 56

Thank You
-Given: 19
-Receive: 63


I try to be patient


« Reply #2 on: July 21, 2017, 01:17:42 01:17 »

The front panel is made from FR4 copper plated board.

The box is Hammond model 1455K1602 (good quality Canadian boxes). The end panels are black plastic.

So, to avoid the ugly black, I decided to use FR4 board in front of the ugly black. Made the scale dwg in ACAD and printed on plastic retro-projector foil for photo method of making PCBs. In the back, I cut a rectangle in the black plastic so light from blue leds will illuminate the writing.

It is looking good, and the light is not so invasive (intense) as it looks in the photo above.
Logged

Interested and hopefully helpful in: DC brushed motor control (mainly R/C - PPM/PWM), analog audio, PIC (mikrobasic PRO). Feel free to ask, and if I can, I will help. But only on forum topics, any started private conversation will continue in a public topic.
Pages: [1]
Print
Jump to:  


DISCLAIMER
WE DONT HOST ANY ILLEGAL FILES ON THE SERVER
USE CONTACT US TO REPORT ILLEGAL FILES
ADMINISTRATORS CANNOT BE HELD RESPONSIBLE FOR USERS POSTS AND LINKS

... Copyright 2003-2999 Sonsivri.to ...
Powered by SMF 1.1.18 | SMF © 2006-2009, Simple Machines LLC | HarzeM Dilber MC