Small Thor -Reloaded -First build - Page 6 - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 22nd November 2012, 02:19 AM   #51
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Too bad the surround is torn, I would sure ask a LOT of questions before trying anything myself. Dave can answer that question for ya.
The port tube can be aquired from Home Depot or Lowes CHEAP. Standard 3" ABS pipe works perfectly. On the back side of the baffle route out an indent the same size or a little bit bigger than outside of the ABS pipe. Glue or epoxy the pipe in place and trim the hole with a flush cut router bit. Then use a roundover bit for the outside of the flare. Blamo. Done. Clean and professional looking.
Good job on making your own template.
Looks good, it's coming along nicely. Have a good Thanksgiving.
Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 22nd November 2012, 02:35 AM   #52
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
That driver really needs to be fixed or replaced. You can band aid them,but it will never really be the same,

Did it come like that or did you accidentally nick it?

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 22nd November 2012, 05:16 AM   #53
GM is online now GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Quote:
Originally Posted by Renron View Post
How many strands in the 12ga?
More the better.
12 ga. may be a little over kill, but shouldn't hurt anything either.
Depends. Consider the electrical power typically required to drive a woofer. A single strand is the ideal, but isn't practical in most apps, so number of strands is about how flexible it needs to be to route it plus due to internal losses it ideally needs to be derated, same as happens when multiple vents are used instead of one large one.

The tweeter OTOH will be 'feeling' the need for much less power, ergo it doesn't need nearly as big a single cable and why magnet winding wire is a near ideal choice, so woofer size wiring will act as a shunt unless it is made with the appropriate size, minimum number of strands optimally required for HF transmission. In this scenario, you’re right, the more strands, the better as they will be smaller.

How far out of whack the mismatch before it's perceived depends on speaker efficiency, peak SPL required, room acoustics, but I don't recall ever seeing even a rule-of-thumb, so only know to calculate theoretical ideals, though I guess with today's measurement systems it can probably be seen by comparing high resolution impulse responses or....?

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 22nd November 2012, 10:27 AM   #54
diyAudio Member
 
Join Date: Oct 2012
Location: Ontario
Thanks all
Thanks for the help Ron. I will do that.

Dave
The driver came out of the box that way. the seller checked before it left so it was transit damage. Shame it can't be glued.


GM
thanks for the information are you saying I should not use the 12 awg for the woofer or is it ok?

thanks
  Reply With Quote
Old 22nd November 2012, 10:37 AM   #55
diyAudio Member
 
Join Date: Oct 2012
Location: Ontario
Happy Thanksgiving All

Dave you already had yours.

We celebrate both cant be too thankful.
  Reply With Quote
Old 22nd November 2012, 03:23 PM   #56
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Quote:
Originally Posted by GM View Post
Depends. Consider the electrical power typically required to drive a woofer. A single strand is the ideal, but isn't practical in most apps, so number of strands is about how flexible it needs to be to route it plus due to internal losses it ideally needs to be derated,
GM
Can you please explain this? Frankly, I do not understand why a single strand would be better. From what I've read the signal (electrons) travels (really just nudge into each other) on the outside surface of the wire, not the inside. Multiple strand wire has a greater surface area than single strand wire.

I don't want to get into a debate here, just trying to understand.
We're not talking about more than meter or so worth of wire.

Ron
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 22nd November 2012, 03:25 PM   #57
Renron is offline Renron  United States
diyAudio Member
 
Renron's Avatar
 
Join Date: Jan 2007
Location: Sacramento
Quote:
Originally Posted by 8ntractor View Post
Dave
The driver came out of the box that way. the seller checked before it left so it was transit damage.
thanks
Cough, cough..............
__________________
"If it doesn't work properly, hope it catches on fire"- Nelson Pass @ BA3
"I fired up the prototype. Literally." The Prophet Pass.
  Reply With Quote
Old 22nd November 2012, 04:51 PM   #58
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by 8ntractor View Post
The driver came out of the box that way. the seller checked before it left so it was transit damage. Shame it can't be glued.
Poor packaging then. That is on the seller.

It can be glued but it will never be as good as it could.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 22nd November 2012, 04:54 PM   #59
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by Renron View Post
From what I've read the signal (electrons) travels (really just nudge into each other) on the outside surface of the wire, not the inside. Multiple strand wire has a greater surface area than single strand wire.
But given a single strand, all the other strands are interfering with the field on the outside of the conductor. Ideally each wire would be surrounded by a vacuum but since that is not practical, insulators with diaelectrics that come closet to a vacuum are best.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 22nd November 2012, 05:00 PM   #60
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by planet10 View Post
Poor packaging then. That is on the seller.
Addendum. The factory packaging i have seen from SEAS is less then stellar -- minimal. And they rely on little plastic bits that plug into the bolt holes to keep the cardboard wrap from squishing/damaging the surround. These are easy to lose, and if the seller didn't think ahead to where he was going to resell these, then he likely lost/tossed tham and didn't use anything (i'm guessing -- snapped off golf tees are a good sub if the bolt holes are large enuff). The surround could esiely have stuck to the packaging and then when removed ripped a bit of surround off.

IME far too many people shipping drivers have no clue. And you cannot assume that the factory packaging is up to the task. I often reinvent the packaging before shipping drivers out.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  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
Problem with Small Thor build vikingshill Multi-Way 10 20th May 2011 02:45 PM
Thiele-Small reloaded with LTspiceIV steph_tsf Solid State 12 9th May 2010 08:59 AM
Small SEAS Thor Equipment Pairing (Help) c5z06 Multi-Way 2 28th January 2010 11:27 PM
Curved Small Thor Build Renron Multi-Way 102 20th January 2008 01:03 AM
Here's another Thor (Small) greenie512 Multi-Way 26 3rd September 2007 03:56 AM


New To Site? Need Help?

All times are GMT. The time now is 07:41 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