Cardboard Speakers! - Page 3 - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

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 October 2004, 06:13 PM   #21
Variac is offline Variac  United States
diyAudio Editor
 
Variac's Avatar
 
Join Date: Dec 2001
Location: San Francisco, USA
Well, this is the perfect group project.
Kind of the DIY reference speaker project- but so cheap that
everyone can participate!

The link shows lot of good xperimentation to this point- I wouldn'be a bit surprised if we could come up with something pretty darned good in the end.....
  Reply With Quote
Old 28th October 2004, 02:40 PM   #22
MEXXX is offline MEXXX  United States
diyAudio Member
 
Join Date: Oct 2004
Send a message via AIM to MEXXX Send a message via MSN to MEXXX Send a message via Yahoo to MEXXX
Well, no luck finiding the Sonic Impact T-Amp or the combo pack at my local Target.

There are two more stores within a 20 mile radius that I will check out this weekend.

I'm keeping my fingers crossed and hopes low.



MEXXX
  Reply With Quote
Old 28th October 2004, 10:53 PM   #23
Sherman is offline Sherman  United States
diyAudio Member
 
Join Date: Feb 2004
Location: Chicago area
Quote:
Originally posted by MEXXX
Well, no luck finiding the Sonic Impact T-Amp or the combo pack at my local Target.

There are two more stores within a 20 mile radius that I will check out this weekend.

I'm keeping my fingers crossed and hopes low.



MEXXX
The stores I found these at had them on the end caps in the vicinity of the stereos/mp3 players/computers. They were with a bunch of other clearance stuff and had no sign or anything on the shelves.

I'm in the far west suburbs of Chicago if that helps any.

BTW, I started to mod one of the amps today. I'm planning on putting it in an aluminum case with dual inputs selectable with a front panel switch and actual binding posts for speaker connections.

So far so good but I'm having a little troube de-soldering the LED. I don't want to overheat the surface mount devices so I'm being careful but it might be time to pull out the desoldering iron instead of using the copper braid.

Once that LED is off the board the rest should be a piece of cake (famous last words).
__________________
--Sherman
  Reply With Quote
Old 29th October 2004, 03:47 PM   #24
marcusf is offline marcusf  United States
diyAudio Member
 
Join Date: Sep 2004
Location: maryland
Hi;

Does anyone know if the small amp that comes with the flat speakers is the same type of chip as the class-T 15w amp? I picked one up yesterday and the documentation didn't say much about the amp except to state that it was 2 watts. I checked Sonic Impact's website, but it didn't say either. It sounded good through my fe127Es though.

thanks
  Reply With Quote
Old 29th October 2004, 11:41 PM   #25
MEXXX is offline MEXXX  United States
diyAudio Member
 
Join Date: Oct 2004
Send a message via AIM to MEXXX Send a message via MSN to MEXXX Send a message via Yahoo to MEXXX
If your referring to this amp, no its not the same as the T-Amp.

Click the image to open in full size.
  Reply With Quote
Old 30th October 2004, 01:33 AM   #26
Sherman is offline Sherman  United States
diyAudio Member
 
Join Date: Feb 2004
Location: Chicago area
Quote:
Originally posted by marcusf
Hi;

Does anyone know if the small amp that comes with the flat speakers is the same type of chip as the class-T 15w amp? I picked one up yesterday and the documentation didn't say much about the amp except to state that it was 2 watts. I checked Sonic Impact's website, but it didn't say either. It sounded good through my fe127Es though.

thanks
I don't know which class-T 15w amp you are referring to but the Sonic Impact that came with the cardboard speakers I bought is a 15wpc digital amp.
__________________
--Sherman
  Reply With Quote
Old 30th October 2004, 02:15 AM   #27
MEXXX is offline MEXXX  United States
diyAudio Member
 
Join Date: Oct 2004
Send a message via AIM to MEXXX Send a message via MSN to MEXXX Send a message via Yahoo to MEXXX
To elaborate a little more on the specs its 6 w/rms per channel into 8 ohms @ 0.1% THD+N and 15 w/rms per channel into 4 ohms @ 10% THD+N.
  Reply With Quote
Old 30th October 2004, 05:08 AM   #28
diyAudio Member
 
Join Date: Jul 2004
Location: Seattle USA
Target and PE both sell this amp:
http://www.partsexpress.com/pe/showd...number=300-952
Looks to be higher power?
  Reply With Quote
Old 30th October 2004, 08:43 AM   #29
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by johnnyx
I think those cardboard speakers used NXT technology
Yes, these are NXT distributed mode speakers. The cardboard is set to resonate by the exciter glued to the backside. Whereas we usually try to not have resonances in a speaker an NXT panel is designed to have as many resonances as possible, close enuff together that they have flattish response. (much much more info at NXT's website).

Click the image to open in full size.

There is a page on these cardboard jobbies.

http://www.nxtsound.com/industries/i...es.php?f_id=16

A lot of research has gone into figuring out what shape, resonant qualities, and exciter position give reasonable sound quality. I doubt they will ever achieve real hifi, but they do some things like no other speakers can, and as your example shows, the box your cereal comes in could be a speaker (ie prize is the box not in the box )

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 30th October 2004, 08:46 AM   #30
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by Sherman
I did attempt to measure FR of the cardboard speakers this morning but couldn't. When playing a 1K Hz tone and setting the volume to 0 db on my meter I encountered a problem. At about minus 2 dB the speakers began emitting a second, completely different tone simultaneous with the 1K Hz signal.
That is a side effect of how they work... thet resonate.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  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
Free Cardboard tubes gengis Everything Else 4 5th August 2005 12:29 AM
cardboard can be cool Deagle50ae Multi-Way 14 7th March 2005 06:43 PM
Open baffle - from cardboard to... miguel2 Multi-Way 1 27th July 2004 04:55 PM
chocolate box cardboard coil formers :) Duo Multi-Way 4 4th January 2004 07:05 PM


New To Site? Need Help?

All times are GMT. The time now is 04:02 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