Let the games begin! - 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 29th September 2005, 10:03 PM   #1
xyrium is offline xyrium  United States
diyAudio Member
 
Join Date: Apr 2005
Location: NJ
Default Let the games begin!

So I'm doing my first build. It's Krutke's L15/27TFFC project but I'm using the TDFC. Doing worry Zaph, I won't ask why my speakers don't sound good since I deviated from the recipe!

A big thanks to John for posting his work though. I am truly looking forward to the result. Oh, I am also going with the drivesr directly in line with each other, center to center, instead of mounting the tweeter to the inside. If it doesn't sound good, new cabinets....
Attached Images
File Type: png parts1.png (98.7 KB, 332 views)
  Reply With Quote
Old 30th September 2005, 01:21 AM   #2
Zaph is offline Zaph  United States
diyAudio Member
 
Zaph's Avatar
 
Join Date: Sep 2003
Location: Wisconsin
Heheh, I've had people use my crossover designs with complete different speakers and then ask me why "my design" doesn't sound good. Of course, you can probably get an idea of the emails I get by reading my email faq.

The 27TFFC and TDFC are practically twins though. no worries swapping those out. Centering the tweeter will put the flattest frequency response about 15 degrees off axis. On axis will have a slightly bigger dip at 3kHz, and a slightly bigger peak at 4.5kHz. It's your typical diffraction ripple response. With the TDFC's small rise in the top end response, 15 degrees off axis smooths it out just right. That design should work out well, just consider it optimized for off axis response and don't toe the speakers in. Straght ahead should work great.

We want pictures when you're done.
__________________
-Zaph|Audio-
  Reply With Quote
Old 30th September 2005, 02:30 AM   #3
xyrium is offline xyrium  United States
diyAudio Member
 
Join Date: Apr 2005
Location: NJ
Thanks John.

I can imagine the inquiries you get. Well, maybe not even. Yes, your FAQ was quite "informative".

I am going to use the PE .38cu ft cabinets, so they probably won't look much different, but I will certainly be posting pics as I make progress. I really like the small driver design, though I don't know why I find them so intriguing.

I kept them within the spec of the center to center distance of 13560 / crossover frequency though. I have about 5.75 inches between them. Just slightly different than you did I believe. I'm considering using some speaker gasket between the baffle and cabinet to test them before gluing, but I'm afraid the lack of coupling will lead to false results. Who knows, that's the fun of it I'm hoping!

Tomorrow, we route the baffles, though I forgot to order the darn ports! Grrr...

Rgds,
Paul
  Reply With Quote
Old 30th September 2005, 02:51 AM   #4
sqlkev is offline sqlkev  United States
diyAudio Member
 
Join Date: Mar 2004
Location: 714
home depot ports

gluck with the project,
some day i'll give in and start a zaph project.

already have a pair of 27tffc here
  Reply With Quote
Old 30th September 2005, 12:50 PM   #5
xyrium is offline xyrium  United States
diyAudio Member
 
Join Date: Apr 2005
Location: NJ
Yeah, I was thiking of going with straight 2" dia. PVC and doing a roundover on the cabinet. I just don't like the exposed MDF that it would create. I still have to figure out what combination of padding/damping/absorbing/diffusing I'm going use anyway. I really have to sit down and make a determination on that tongiht. Otherwise I know me, and every project I start takes 10 ten times longer than it should...
  Reply With Quote
Old 30th September 2005, 01:24 PM   #6
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
Quote:
Originally posted by xyrium
I really have to sit down and make a determination on that tongiht. Otherwise I know me, and every project I start takes 10 ten times longer than it should...
<chuckles>

Hmmmmm I would never be guilty of that..... no really......

I joined here a bit over two years ago, and my project is now about half finished (and most of that was done recently over a 3 week period).... I've had the drivers for almost 12 months..... hmmmm.

Tony.
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos
  Reply With Quote
Old 30th September 2005, 04:12 PM   #7
xyrium is offline xyrium  United States
diyAudio Member
 
Join Date: Apr 2005
Location: NJ
So maybe we can blame all of the time we spend posting to Diyaudio.com that causes the delay in production? Have a great weekend!
  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
I want to begin but I don't know how!!! nicxxx82 Tubes / Valves 10 31st January 2008 05:18 PM
Where to begin on a PP? d1983 Tubes / Valves 13 22nd March 2007 02:31 AM
Where to begin. mikee55 Multi-Way 10 9th August 2006 12:57 PM
Where do I begin? rg8729 Chip Amps 3 4th February 2006 07:11 PM
Where to begin? subcoolman Analogue Source 2 20th June 2005 06:30 AM


New To Site? Need Help?

All times are GMT. The time now is 09:54 AM.


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