Small Portable Weatherproof Speaker - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 8th November 2012, 01:48 AM   #11
diyAudio Member
 
Join Date: Jan 2012
Just reading the specs and not simulating it, I think those drivers start to look ok. However, you might want to think about your design preferences before ordering and designing crossovers. For example, how big can the box be, and do you prefer ported ("more" bass but bigger box) or sealed ("less" bass but smaller enclosure without holes in) design.
How large is the internal volume of the box you was planning for?
Also, how loud do you want it to be? 86 db/1W is ok but not stunning.

The tweeter does not need a enclosure at all, but it is most convenient to mount it in the same one as the woofer. Mostly because you want somewhere to hide the cables, and positioning is tricky otherwise ;-)
No seriously, it goes in the same enclosure as the woofer.
  Reply With Quote
Old 8th November 2012, 02:01 AM   #12
smscad is offline smscad  Australia
diyAudio Member
 
Join Date: Sep 2012
Location: Maitland
I'm looking at about a 2.5L enclosure each side. I was thinking sealed but am open to suggestions. My overall design is about 150x150x300

Is 86 db/1W to low. Would I be wise to look for a higher sensitivity say around 90 db/1W. I've really got no idea how loud that is.
  Reply With Quote
Old 8th November 2012, 02:14 AM   #13
diyAudio Member
 
Join Date: Jan 2012
I simulated the Vifa driver in winISD with 2 liter (per driver) sealed enclosure. Something like that should be ok. Qtc is close to 1, and F3 is about 122 Hz.
Attached Images
File Type: png WinISD beta.png (58.5 KB, 60 views)
  Reply With Quote
Old 8th November 2012, 03:43 AM   #14
diyAudio Member
 
Join Date: Jan 2012
Ah did not see your last message. 2.5 liters if good too. Gives slightly lower Qtc and F3 which is good. Those speakers works best in sealed design.
90 dB/1W would mean that the setup would be more than twice as loud.
With 86 dB/1W, 8 Ohm speakers and a TA2020 chip you would reach something like 98 dB at full blast, perhaps a little more.
I would say it is enough for normal to loud music listening, bbq etc, but not loud enough to have drunken all-out party. Maybe indoors...
  Reply With Quote
Old 13th November 2012, 08:08 PM   #15
smscad is offline smscad  Australia
diyAudio Member
 
Join Date: Sep 2012
Location: Maitland
Received the amp yesterday.
Attached Images
File Type: jpg Tripath.jpg (754.5 KB, 52 views)
  Reply With Quote
Old 13th November 2012, 09:39 PM   #16
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

The Vifa fullrange doesn't need an additional tweeter, use it on its own.

rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
  Reply With Quote
Old 14th November 2012, 07:40 PM   #17
smscad is offline smscad  Australia
diyAudio Member
 
Join Date: Sep 2012
Location: Maitland
Thanks sreten,

I'm thinking that just the driver without tweeters may be my best option as it is my first build.
  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
Small Portable 3" Speaker? Entreated Everything Else 3 23rd May 2013 03:08 PM
Small and portable headphone amp Crisis firefart_1st Headphone Systems 15 26th May 2010 08:24 PM
Any recommendation for outdoor weatherproof speaker connectors? swechsler Multi-Way 3 27th August 2008 05:46 AM
small driver for portable speakers _atari_ Full Range 7 15th May 2008 01:04 PM
Small Portable Speakers and a T-Amp guitarobert Full Range 2 24th January 2008 06:40 PM


New To Site? Need Help?

All times are GMT. The time now is 09:51 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