Go Back   Home > Forums > >

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

My new preamp design: Arduino, 6 input selector, MDAC attenuator, IR etc
My new preamp design: Arduino, 6 input selector, MDAC attenuator, IR etc
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools
Old 27th November 2016, 04:44 PM   #11
Kay is offline Kay  Germany
diyAudio Member
 
Join Date: Nov 2001
Location: Emden
Quote:
Originally Posted by maxw View Post
A couple questions:
1. Can anyone recommend a company for machining small quantity aluminium parts in Europe? I would like to get a front panel made from 20mm thick aluminium.
https://www.schaeffer-ag.de/produkte/frontplatten/
__________________
best regards
Kay
  Reply With Quote
Old 28th November 2016, 06:43 AM   #12
seanp2k is offline seanp2k  United States
diyAudio Member
 
Join Date: Oct 2016
Location: Bay Area, California
Very interesting, thanks for posting and for putting this on Github. I'm especially interested in an ESP32-based version, and if a group buy for PCBs / kits ever happens. With my level of experience, making my own BOM for this would be a little above my head (I could do it, but it would require a lot of research on package sizes etc that I just don't know yet). I've never had a PCB printed. I have a decent amount of experience with ESP8266, Arduino, rPi, RFM69HW, etc and software development in general (my day job). I might try to take this on after the holidays, since I have some LXMinis and 6 channels of amplification to build first.
  Reply With Quote
Old 28th November 2016, 07:02 AM   #13
Stixx is offline Stixx  Germany
diyAudio Member
 
Stixx's Avatar
 
Join Date: Sep 2003
Location: Southern Germany
Quote:
Originally Posted by maxw View Post
A couple questions:
1. Can anyone recommend a company for machining small quantity aluminium parts in Europe? I would like to get a front panel made from 20mm thick aluminium.
https://www.schaeffer-ag.de/produkte/frontplatten/
Schaeffer only does up to 10mm.

I had case parts for a headphone amplifier made at a local shop (front is 25mm)... maybe do some shopping around in your neighbourhood.
Sometimes smaller companies do small runs of parts that are not too expensive.
__________________
www.original-ton.net
  Reply With Quote
Old 28th November 2016, 11:03 AM   #14
maxw is offline maxw  United Kingdom
diyAudio Member
 
maxw's Avatar
 
Join Date: Jun 2004
Location: Berlin
Quote:
Originally Posted by seanp2k View Post
I'm especially interested in an ESP32-based version
Me too but I think we need to wait a bit longer before the ESP32 gets more popular with DIY. Support, code and libraries still need to catch up a bit I think. There is already a NodeMCU-32S module released, you can get it on Aliexpress:
https://www.aliexpress.com/item//32758824128.html
And another model I've seen:
https://www.aliexpress.com/item//32758824128.html

I might get one soon.


Quote:
Originally Posted by seanp2k View Post
making my own BOM for this would be a little above my head
I'll add an example BoM soon.


Quote:
Originally Posted by Stixx View Post
Schaeffer only does up to 10mm.

I had case parts for a headphone amplifier made at a local shop (front is 25mm)... maybe do some shopping around in your neighbourhood.
Sometimes smaller companies do small runs of parts that are not too expensive.
Ah I see. I definitely want something more than 10mm. Is this the piece you are talking about?

An externally hosted image should be here but it no longer works. Please upload images instead of linking to them to prevent this.


How much did that front panel cost to get made?
  Reply With Quote
Old 29th November 2016, 08:09 AM   #15
Stixx is offline Stixx  Germany
diyAudio Member
 
Stixx's Avatar
 
Join Date: Sep 2003
Location: Southern Germany
Didn't see you reply Maxw...

No, that's not the one, front and back panel were made from Ureol on this one.
The future case of the F5 HA will have the thick alu front.

Unfortunatly I can't tell you a quote since I got the parts practically for free (good connections, I was lucky ).
I think it all depends on the hours the shop has to take into account... when you supply 3D data and the shop just
has to put it on the milling machine it should not be too expensive. Say sub 100 GBP??

When it is just a rectangular slab of 20mm it should be even less. I just googled a shop in Germany where I ordered before...
a plate of 400x150x20 for instance is almost 40€ just for the material. You do the drilling and tapping.

EDIT: Definitely worth it with your attention to detail!
__________________
www.original-ton.net

Last edited by Stixx; 29th November 2016 at 08:11 AM.
  Reply With Quote
Old 29th November 2016, 08:45 AM   #16
AlanElsdon is offline AlanElsdon  England
diyAudio Member
 
Join Date: Jun 2003
Location: Surrey/Hampshire borders
Max,

Please pm me with details of what you want for the front - I know a few case makers / metal workers - I can have a chat with them.
  Reply With Quote
Old 29th November 2016, 09:19 AM   #17
Stixx is offline Stixx  Germany
diyAudio Member
 
Stixx's Avatar
 
Join Date: Sep 2003
Location: Southern Germany
And when you need 3D data... maybe I can help.
__________________
www.original-ton.net
  Reply With Quote
Old 29th November 2016, 09:54 AM   #18
ypaudio is offline ypaudio  Singapore
diyAudio Member
 
Join Date: Nov 2013
Cool. I want to build similar one. Thanks for sharing this project
  Reply With Quote
Old 29th November 2016, 03:08 PM   #19
maxw is offline maxw  United Kingdom
diyAudio Member
 
maxw's Avatar
 
Join Date: Jun 2004
Location: Berlin
Quote:
Originally Posted by AlanElsdon View Post
Max,

Please pm me with details of what you want for the front - I know a few case makers / metal workers - I can have a chat with them.
Quote:
Originally Posted by Stixx View Post
And when you need 3D data... maybe I can help.
Thanks very much guys. I need to decide on what I want first and create a design. I've used Autocad before for some other projects so I am able to create the required files but finding the time is another story
  Reply With Quote
Old 29th November 2016, 05:51 PM   #20
Stixx is offline Stixx  Germany
diyAudio Member
 
Stixx's Avatar
 
Join Date: Sep 2003
Location: Southern Germany
Quote:
but finding the time is another story
Now that sounds familiar.
__________________
www.original-ton.net
  Reply With Quote

Reply


My new preamp design: Arduino, 6 input selector, MDAC attenuator, IR etcHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
PCBs: Dual TPS7A330 PSU, 6 input relay selector, MDAC attenuator, 6 way RCA board maxw Swap Meet 13 8th January 2017 02:52 PM
My Preamp Project: Arduino, I2C, relay selector+attenuator, tube stage maxw Analog Line Level 63 31st March 2015 07:33 PM
Relay Attenautor, Input selector and Arduino 35 maxw Swap Meet 4 10th December 2013 12:38 PM
Arduino based Input Selector for preamp _atari_ Analog Line Level 5 30th June 2010 03:42 PM
Lightspeed Attenuator + Input selector zristic Solid State 21 11th January 2010 03:17 AM


New To Site? Need Help?

All times are GMT. The time now is 01:31 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki