Changing enclosures, need advice..... - 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 6th May 2010, 06:45 PM   #1
hags is offline hags  United States
diyAudio Member
 
Join Date: Nov 2004
Location: Chain o' Lakes
Default Changing enclosures, need advice.....

I have a pair of homebuilt speakers. I built these a few years ago based on an article in Speaker Builder issue six/2000.

I used higher quality contruction techniques than the author did owing to the fact that I had access to wood working equipment at the time.

I deviated from the drivers used in the article by using Vifa D27TG45 1" dome tweeters versus the aluminum dome tweeters used. I kept the Vifa P17Wj08 driver the same.

Anyway, due to a recent "accident" one of the enclosures has been damaged. I would like to use a prebuilt enclosure because I don't have access to woodworking equipment anymore.

The enclosure volume for these enclosures is 0.62in3.

The available/acceptable enclosures are 0.50in3 or 0.75in3.

My question is, which, if either, will I be able to use and will I be able to use the same crossover with a different larger/smaller enclosure?

Thanks in advance!
__________________
"Some lures are designed to catch fish, others are designed to catch fisherman."
  Reply With Quote
Old 6th May 2010, 11:34 PM   #2
diyAudio Member
 
Inductor's Avatar
 
Join Date: Feb 2006
Location: Cascais
Quote:
Originally Posted by hags View Post

The enclosure volume for these enclosures is 0.62in3.

The available/acceptable enclosures are 0.50in3 or 0.75in3.
Something wrong with your units. Is it feet.
It doesn't seem to be a problem (all of them seem to be within the limits). Also discussed here Two way

http://www.kbapps.com/calculators/Vo...alculator.html
Attached Images
File Type: gif VIFA P17WJ-00-08 Tymphany - Enclosure.gif (57.4 KB, 64 views)

Last edited by Inductor; 6th May 2010 at 11:50 PM.
  Reply With Quote
Old 7th May 2010, 03:12 AM   #3
diyAudio Member
 
Join Date: Sep 2002
Location: New York city
The late, lamented PW17J8 is one exceptional driver. They seem to work best (at least in my experience) with very simple crossovers. For years, I've been using them in a natural rolloff design (no woofer crossover at all) with a simple 4 uf mylar cap in series with the tweeter (I've used a number of different Vifa tweeters including yours). I treat the woofer as a sort of full range driver with a little help on the top end, crossing over in the 5K range. The resulting midrange is very listenable and the tweeters are very lightly stressed even at high volumes.

Too bad about not having access to the tools to build your own cabinets. I'm currently listening to a quarter-wave folded transmission-line implementation of this combination. The PW17J8 has never sounded so good in the bass region. I've built a number of copies for my friends. When they hear mine, they want a pair for themselves and I was happy to oblige.
__________________
Peter Hansen
www.audio.thesonicboomers.com
  Reply With Quote
Old 7th May 2010, 04:01 AM   #4
hags is offline hags  United States
diyAudio Member
 
Join Date: Nov 2004
Location: Chain o' Lakes
Quote:
Originally Posted by Inductor View Post
Something wrong with your units. Is it feet.
It doesn't seem to be a problem (all of them seem to be within the limits). Also discussed here Two way

Volume Conversion Calculator - KBapps.com
Feet it is, sorry, can't type and read at the same time despite my high school typing teacher's best efforts.

I appreciate the info.
__________________
"Some lures are designed to catch fish, others are designed to catch fisherman."
  Reply With Quote
Old 7th May 2010, 12:22 PM   #5
diyAudio Member
 
Inductor's Avatar
 
Join Date: Feb 2006
Location: Cascais
Quote:
Originally Posted by bunkie View Post
...I'm currently listening to a quarter-wave folded transmission-line implementation of this combination. The PW17J8 has never sounded so good in the bass region.
Interesting. The P17 has a frequency output individual/out-of-the-ordinary profile. I don't know about TLs, yet. What were the main features/specs that you looked at, or it started just as an experience?

Note: I'll have to change some drivers (with different new ones) on a TL. Should I look for same freq. output curve, Fs, or other specs, having in mind that I have access to the interior of the speakers, measuring them etc. (I know I will have to read a little... about TLs)

Last edited by Inductor; 7th May 2010 at 12:33 PM.
  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
How cheap can you get? ~$60 assembled pair w/ bamboo enclosures - offer advice. -=Germania=- Full Range 79 8th January 2009 04:58 AM
changing the value of capacitor msm677 Car Audio 24 11th July 2007 05:38 AM
advice on micro speakers and enclosures geom_tol Car Audio 12 15th June 2007 12:19 PM
Poster in Musical Instrument forum needs bridging advice on BrianGT 4780 advice moving_electron Chip Amps 0 16th February 2005 12:37 AM
2 way crossover changing Q ??????? norman bates Multi-Way 2 17th January 2004 08:04 AM


New To Site? Need Help?

All times are GMT. The time now is 07:35 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