Apollo Construction Diary - Page 49 - 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 27th January 2013, 11:05 PM   #481
diyAudio Member
 
Join Date: Nov 2003
Location: California
Looks nice! Is one of the dust collection hoses to the cnc just to pull dust out of the entire enclosure? I was thinking about trying to set up a kind of down draft table on my router plus a dust shoe. Anything not picked up by the dust shoe would get pulled to the sides of the table and down to a collection point with a dust hose. In any case, I'd be interested in how the dust collection works out for you.
  Reply With Quote
Old 27th January 2013, 11:45 PM   #482
diyAudio Member
 
ShinOBIWAN's Avatar
 
Join Date: Feb 2004
Location: UK
Hey John

A dust shoe will go on there eventually(likely the first useful part I cut) but MDF is terrible and you'll never get 100% extraction so the enclosure keeps what's left leaving you to clean up when needed. Its a simple job - pull the hose off the shoe and run it around to pick up the left overs.

Not sure about a down draft table. Depending on the number of holes and open surface area you might need go with a large blower and these can push a lot of the dust back out into the workspace. Because of my simple setup I went with a vacuum extractor. Like I said there's lots of question marks surrounding proper filtering of fine particles with the blower extractors. Even with pleated filters they're still only catching 1 micron and larger particulates 90% of the time. MDF particles can go down to as small as 0.5 microns and if, like me, you've got an extractor in your workspace then you'll really want something that can handle those. Good vacuum extractors will do 0.5 microns at 99%+ efficiency.

I was amazed how complicated proper dust extraction is. There's really no one stop solution for every situation. What I have is a compromise but its about the best I could manage on my budget and particularly the noise levels I was willing to put up with. Vacuum extractors can be very noisy! I demo'd both a dual and triple motor model similar to what I have these things could handily beat any horn loaded or multi driver array SPL monster out there! As you might imagine the quieter one's don't pull as much air so there's your compromise.
__________________
The more you know who you are and what you want, the less things will ever be the same.
  Reply With Quote
Old 28th January 2013, 12:14 AM   #483
diyAudio Member
 
Join Date: Nov 2003
Location: California
I had a shop vac on my router and used it like you say - pull the hose off the dust shoe to clean things up. This left a lot to be desired, partly as I didn't have the machine enclosed. What I was looking at upgrading to was something like this with an enclosure:
CVMAX - Single Phase with Filters - Clear Vue Cyclones
These have 99.99% at 0.5 micron filters, or you can upgrade and get 99.999%. I worked at a place that had two of these in their shop, and while they did make a fair amount of noise they didn't seem that bad. Cutting noise was louder than the dust collectors.
  Reply With Quote
Old 28th January 2013, 01:57 AM   #484
diyAudio Member
 
Join Date: Dec 2004
Quote:
Originally Posted by ShinOBIWAN View Post
I made a video for Arthur whom the Apollo are destined for. I'm sure he won't mind me posting it here though. Apologies for sounding confused and bunged up. Its my first time talking to just a camera (felt really weird!) and I hadn't really thought about anything before hitting record so its random to say the least!

Rambling about CNC - YouTube
LOL cool!

Out of interest do you know if the Valchromat can be finished on an exposed edge or if everything has to be painted?
  Reply With Quote
Old 28th January 2013, 03:27 AM   #485
ScottG is offline ScottG  United States
diyAudio Member
 
Join Date: Feb 2003
Location: US
Quote:
Originally Posted by ShinOBIWAN View Post
Like it!

More, more!
__________________
perspective is everything
  Reply With Quote
Old 28th January 2013, 07:11 AM   #486
diyAudio Member
 
ShinOBIWAN's Avatar
 
Join Date: Feb 2004
Location: UK
Quote:
Originally Posted by smallangryboy View Post
LOL cool!

Out of interest do you know if the Valchromat can be finished on an exposed edge or if everything has to be painted?
Ask me in a couple of months when I try spraying it

When you say finished do you mean filled and sanded? If so then yes and no. You'll still have to sand the edges but filler wouldn't be needed.. The faces are polished and pre-finished though so if you are painting you'll have an easy time compared to mdf.
__________________
The more you know who you are and what you want, the less things will ever be the same.

Last edited by ShinOBIWAN; 28th January 2013 at 07:16 AM.
  Reply With Quote
Old 28th January 2013, 07:15 AM   #487
diyAudio Member
 
ShinOBIWAN's Avatar
 
Join Date: Feb 2004
Location: UK
You'd have no problems with that setup John. Its pretty much as good as it gets for our setups. I say if you can afford it and have the space, then go for it.
__________________
The more you know who you are and what you want, the less things will ever be the same.
  Reply With Quote
Old 28th January 2013, 05:28 PM   #488
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Your construction should move a lot faster now- very cool, nice work getting that CNC up to what seems to be a very high standard.
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 29th January 2013, 11:39 PM   #489
diyAudio Member
 
ShinOBIWAN's Avatar
 
Join Date: Feb 2004
Location: UK
Will be interesting to see how this goes when cutting for real!

First Air Cut Attempt on CNC - YouTube
__________________
The more you know who you are and what you want, the less things will ever be the same.
  Reply With Quote
Old 30th January 2013, 10:36 AM   #490
diyAudio Member
 
Join Date: Sep 2009
Location: Australia
Quote:
Originally Posted by Old'n'Cranky View Post
Hmm. i wonder.
Wish I'd found all this sooner.
Been trying to find hd mdf for the last few months to use in my current speaker project.
Ended up with 32mm mr mdf sent to my cabinet maker.
I haven't had time to look at the links, but I'm pretty sure it hasn't been anywhere for that long. It's only newly available in the UK which is the first market AFAICT.

Moisture resistant MDF is the best alternative I've been offered too. Higher density seems to be unavailable. I guess I don't know the right cabinet makers :-/

EDIT: Hmm, your links indicate otherwise. Could be good news. Time to investigate, thanks!

Last edited by davewantsmoore; 30th January 2013 at 10:58 AM.
  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



New To Site? Need Help?

All times are GMT. The time now is 04:24 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