Iphone Speaker - 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 5th October 2012, 10:08 PM   #1
diyAudio Member
 
Join Date: Oct 2010
Default Iphone Speaker

Greetings all. I've been researching a speaker build for some time, and have gained enough knowledge now to have more questons than answers. My goal is a portable single box design to play stereo music from my Iphone that I can travel with. The Thodio is my inspiration. I will divide the box into two ported chambers, each having a woofer and a tweeter (I can do the math on this). I will somehow integrate a Parts Express DTA-110a 25wps amp. The speakers I want to use also from Parts-Express, are the DS135-8, and the ND16FA-6. The Woofer is 8 ohms and the tweet is 6. Could someone please take the time to look the specs on these and let me know if they would work well together? Any thoughts will help. Is 1st order Butterworth suficient? What freq should I aim the x-over for? This is my first speaker project, and the electrical is baffling to me. Thanks for your help.
  Reply With Quote
Old 6th October 2012, 12:51 AM   #2
diyAudio Member
 
Join Date: Oct 2010
No responses? Really? Am I on the wromg forum?
  Reply With Quote
Old 6th October 2012, 12:52 AM   #3
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
It's Friday night, what did you expect?
  Reply With Quote
Old 6th October 2012, 01:40 AM   #4
Dissi is offline Dissi  Switzerland
diyAudio Member
 
Join Date: Sep 2012
Location: Winterthur
Hi Basshunter,

Nice little project. I checked the drivers and can give you a first feedback.

I assume the portable box has to be as small as possible. The Dayton DS135-8 requires a minimum volume of about 3.2 litres (0.12 cu ft) to work in bass reflex and will reach 80 Hz (-3dB). The vent length will be about 7" and not fit into the cabinet. According to the datasheet the driver has a strong resonance peak at 5.7 kHz. Therefore you will have to choose a crossover frequency of 3.5 kHz or lower.

The tweeter resonance is around 2.5 kHz. According to the datasheet and Zaph's test a crossover frequency of 3.5 kHz is also possible.

Seems to fit. But i fear, that is not really true. Of course it is possible, but it will require a complicated crossover and we have absolutely no headroom.
  Reply With Quote
Old 6th October 2012, 02:10 AM   #5
diyAudio Member
 
Join Date: Oct 2010
Thanks for your effort, DSSI. You researched it for me. I don't want to get into a complicated crossover. Thats not my expertise.
  Reply With Quote
Old 6th October 2012, 11:47 AM   #6
Dissi is offline Dissi  Switzerland
diyAudio Member
 
Join Date: Sep 2012
Location: Winterthur
Please specify the approximate inside volume you are willing to give to the woofer. If it is small, a 3" or 4" will be a better choice. PE recommends 0.17 cu ft for the DS135.
  Reply With Quote
Old 6th October 2012, 12:02 PM   #7
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
https://sites.google.com/site/undefi...ightsensations

Hi,

Anything without a proper crossover design won't work well.

Lots of info available on the above. Your single box
needs to be 8L to 10L internal volume for this design.

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 6th October 2012, 12:42 PM   #8
diyAudio Member
 
Join Date: Oct 2010
The .17 cu ft per chamber is very do-able. I'm wanting portable, not pack in the suit case-able. I'm thinking 16" x 7" x 5"-ish overall. Maybe room enough for airplay, and a battery later.
  Reply With Quote
Old 6th October 2012, 03:29 PM   #9
Dissi is offline Dissi  Switzerland
diyAudio Member
 
Join Date: Sep 2012
Location: Winterthur
Something like that ?
Ghettoblaster1.jpg
  Reply With Quote
Old 6th October 2012, 03:53 PM   #10
diyAudio Member
 
Join Date: Oct 2010
DSSI, Yes, thats what I had in mind. Maybe add a cavity in back to put the power source and plug connectors, the Apple router, and a handle on top. Wouldn't this sound a lot better than whats available from the consumer market, ie. Bose, Samsung, etc?
  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
Looking for some help on an iPhone speaker setup ilov Class D 1 30th January 2012 07:01 PM
Portable ADC-DAC for iPhone 4 (iPhone IV) from Fostex - AR-4i + HP-P1 (AR4i + HPP1) tiefbassuebertr Digital Line Level 1 12th December 2011 09:45 AM
Iphone speaker - help needed :) Havoc08 Multi-Way 26 25th November 2011 08:56 PM
iPhone App? PBeyer Forum Problems 2 28th December 2010 05:25 PM
How to make your own iPhone Ringtone and transfer it to your iPhone directly? kity55555 Software Tools 1 20th December 2009 11:54 AM


New To Site? Need Help?

All times are GMT. The time now is 02:05 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