X/O Wiring Question - diyAudio
Go Back   Home > Forums > Design & Build > Construction Tips

Construction Tips Construction techniques and tips

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 Search this Thread
Old 16th April 2013, 02:39 AM   #1
Markgm is offline Markgm  United States
diyAudio Member
 
Join Date: Jan 2010
Location: VT, USA
Default X/O Wiring Question

I am building my first kit speaker - the Overnight Sensations. I may have a cheesy x/o board. I don't have any contacts on the board (it is literally wood) - all connections are soldered together off the board. So, there are some wires. I may have wired myself into a position.

Click the image to open in full size.

Can I run wires from the negatives on the drivers straight back to the binding posts? As is, all the negative return lines come together just before the binding post. Or should they go straight back to the 10 ohm R2 (tweeter) and 6.8 uF C4 (woofer), and before the wires (from those positions) that run straight back to the binding post? Will this make a difference?

Thank you very much for your help.

Cheers,
Mark

Last edited by Markgm; 16th April 2013 at 02:45 AM.
  Reply With Quote
Old 16th April 2013, 03:37 AM   #2
Jay is offline Jay  Indonesia
diyAudio Member
 
Join Date: Feb 2003
Location: Jakarta
The wire will present a little resistance (especially short ones as in small speaker). There is difference but not much. I believe you cannot hear the difference.
  Reply With Quote
Old 16th April 2013, 03:58 AM   #3
Markgm is offline Markgm  United States
diyAudio Member
 
Join Date: Jan 2010
Location: VT, USA
Thank you, Jay. I am using 16 gauge wire, and so I have 4 wires running together at the negative post, from 1) between L1 and R2 outputs, 2) C4 output, 3) woofer output, and 4) tweeter output.

I thought 16 gauge would reduce in-line inductance, but at this point, I've got a bunch of wire. These pieces are all 1 foot or less, but there are 8 pieces of wire.
  Reply With Quote
Old 16th April 2013, 05:00 AM   #4
Jay is offline Jay  Indonesia
diyAudio Member
 
Join Date: Feb 2003
Location: Jakarta
The issue is actually not whether the wire is too inductive or too resistive. The issue is whether the design is a precision one or not, whether you change the design or not.

For example, when you run a wire from C4 to binding post instead of to woofer, you have put a resistor in series with the capacitor. Will this change the design? No, not at all. The extra resistance will change the roll-off slope a little theoretically but will not be at audible level.

Issue is with notch filter (LCR) if any, when they are designed with precision in mind (especially for complex crossover) where they are supposed to be attached right at the speaker connectors.

But nothing is too critical in the design (remember that your coil has DCR, your caps have tolerances)
  Reply With Quote
Old 16th April 2013, 05:37 AM   #5
Markgm is offline Markgm  United States
diyAudio Member
 
Join Date: Jan 2010
Location: VT, USA
I could remove a foot of wire if I just solder the tweeter output to R2 output, and Woofer output to C4 output, so far as distance to R2 ad C4 output is concerned. I didn't solder there, because I was soldering too many connectors/gauge in one place at these places. That 1.1 mH coil is a big one, so I don't know if I can compete with it. Thanks, Jay, for your input. It seems resistance is down by using bigger wire as well.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
4-way wiring question gary h Multi-Way 2 26th December 2009 02:48 AM
Sub Wiring Question jthunder Subwoofers 1 30th January 2007 12:25 AM
Wiring question LizardBrain Multi-Way 4 26th March 2006 03:46 PM
newbie with input tran. question and wiring question imo Solid State 0 18th January 2006 10:10 PM
A wiring question. G Tubes / Valves 4 29th December 2002 01:08 PM


New To Site? Need Help?

All times are GMT. The time now is 07:45 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2