New 3-way project - "The French Touch" - Page 7 - 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 18th August 2013, 05:59 PM   #61
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
I'm a bit disappointed by the smoothness and the brilliant of the paint...
I still have issues with paintbrush patterns and small dust particles that get glued in the paint during the drying...
I put at least 3/4 coats of thin paint but I can't get it right.
I found thi video : DIY How To Paint Mirror like Finish *Step by Step Using RustOleum Oil Based Paint / Part 1 - YouTube

I will try to apply it on the next speaker that I'm starting to build.
  Reply With Quote
Old 25th August 2013, 01:50 PM   #62
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Building the next one !
Positionning precision is not that good but I just can't wait to finish it...
Attached Images
File Type: jpg DSC_0003.jpg (99.9 KB, 194 views)
File Type: jpg DSC_0004.jpg (53.7 KB, 185 views)
File Type: jpg DSC_0008.jpg (69.8 KB, 184 views)
File Type: jpg DSC_0009.jpg (134.0 KB, 187 views)
  Reply With Quote
Old 25th August 2013, 02:42 PM   #63
DrBoar is offline DrBoar  Sweden
diyAudio Member
 
DrBoar's Avatar
 
Join Date: Apr 2003
Location: Stockholm
6 dB filter require that the drivers are flat in impedance and frequency response two octaves on each side of the crossover.

The 4 Ohm bass speaker is 8 Ohm at 300 Hz and 20 Ohm at 1200 Hz so the crossover is anything but 6 dB. Zobel filters are the ting to use for woofer and midrange to flatten the impedance. Using resistors to attenuate mid and high range is common using both serial and parallell resistors. The good thing is that it flattens out the impedance seen by the crossover.
  Reply With Quote
Old 25th August 2013, 07:24 PM   #64
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Thanks for the info.
I agree with you because a small slope of filtering is not enough to compensate for impedance change. So, if the impedance is changing in the same area as the cutoff frequency, the filter's effect which is already very slow (6db/decade), becomes useless.

But my filter is 12db/decade.
Please have a look here. What do you think ?
http://www.diyaudio.com/forums/attac...ect_12db_m.jpg
  Reply With Quote
Old 30th August 2013, 10:56 PM   #65
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Some pictures of my progress...
I've finished assembling the second speaker box and I am now dry-sanding and putting some woodpaste everywhere
Attached Images
File Type: jpg DSC_0002.jpg (79.2 KB, 137 views)
File Type: jpg DSC_0003.jpg (96.9 KB, 25 views)
  Reply With Quote
Old 29th September 2013, 01:19 PM   #66
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Hi,

So, I've just received the drivers and taken some pictures.
- Audax TW025A28
- Davis Acoustics 16GKLV6R (replaces the 16GKLV6M)
- Atohm D300P04

All in all, I've very satisfied with this driver choice.
The Audax very nice and compact, with its gold-plated titanium dome.
The Davis has this unique look, with its fixed cone at the center and its kevlar membrane.
As for the Atohm, it looks less "sophisticated" but much more "powerful", in the end that's not really a problem for a bass driver.


Here are some pictures.
Attached Images
File Type: jpg DSC03307.JPG (94.0 KB, 23 views)
File Type: jpg DSC03308.JPG (48.4 KB, 19 views)
File Type: jpg DSC03310.JPG (48.7 KB, 12 views)
File Type: jpg DSC03311.JPG (63.4 KB, 19 views)
File Type: jpg DSC03305.JPG (56.2 KB, 21 views)
File Type: jpg DSC03304.JPG (45.4 KB, 18 views)
  Reply With Quote
Old 29th September 2013, 01:43 PM   #67
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Also, I'm done with one of the speakers (see pictures below).
The other one still needs some paint on the front and back panels.

I tested the sound of the first speaker.
It works very well.
First impressions are that the tweeter has a very good sensitivity compared to the rest. I might need to remove those resistors that I placed in the medium channel. The medium sounds slightly attenuated. The bass is ok.

The tweeter gave me really a good impression right from the start. It sounds neet and precise and yet not metallical at all.

The medium is good also, precise and a lot of power in reserve. I feel also that it is much less directive than on my old speakers. I can move around and still hear very well the music. The instruments and voices finally sound lound and clear.

The bass requires more power than the others. You can feel that it starts to move when you turn the volume button a bit more. But even though it is less sensitive then the others, you can always here a little bass and it is nice and neet. I like it in fact. It doesn't sound like it's saturating all the time, instead it goes much deeper in the low frequencies than my old speakers.

Let's see how it sounds with both speakers playing.
Attached Images
File Type: jpg DSC03317.JPG (113.0 KB, 53 views)
File Type: jpg DSC03314.JPG (100.1 KB, 54 views)
  Reply With Quote
Old 2nd October 2013, 09:47 PM   #68
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Ok guys, I'm done with my project for now !!

I finished both speakers and now I need some time to listen to them
I talked a little about the sound earlier.
I don't know if it's excellent, acceptable, medium or bad compared to others.

What I know is that is is much better than my previous speakers.
It lacks a little medium maybe.

The main difference with my older speaker is that the sound seems to come from everywhere. It's difficult to locate the speakers when you close your eyes.

I like the sound, really.
All I want to do now is just listen to all my music and have the pleasure of re-discovering everything

The paint work isn't as smooth and clean as I wanted but I guess it's ok. At least my wife didn't comment on that part...

Ok, have a good evening !

PS : No comment on my living room !
Attached Images
File Type: jpg DSC03321.JPG (140.7 KB, 23 views)
File Type: jpg DSC03323.JPG (167.5 KB, 22 views)
File Type: jpg DSC03325.JPG (90.9 KB, 21 views)
File Type: jpg DSC03326.JPG (126.1 KB, 19 views)
  Reply With Quote
Old 2nd October 2013, 09:48 PM   #69
yov is offline yov  France
diyAudio Member
 
Join Date: Feb 2013
Just a few more pictures
See you !
Attached Images
File Type: jpg DSC03328.JPG (198.8 KB, 14 views)
File Type: jpg DSC03329.JPG (178.7 KB, 15 views)
File Type: jpg DSC03330.JPG (58.5 KB, 14 views)
File Type: jpg DSC03331.JPG (93.0 KB, 13 views)
  Reply With Quote
Old 3rd October 2013, 12:49 AM   #70
speedie is offline speedie  Australia
diyAudio Member
 
Join Date: Aug 2009
Location: palmyra fremantle western australia
what height do you sit at to listen
those tweeters look to be anywhere between 1100-1250mm high?
  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
"Proac 2.5 clone" or "Elsinore project" Joel Wesseling Multi-Way 10 26th May 2011 05:51 AM
What makes an amplifier "bright", "warm", or "neutral"? JohnS Solid State 51 13th December 2009 06:42 PM
FS on Ebay: 700TSV 7" Touch-screen LCD undertone Swap Meet 0 19th January 2008 05:33 PM


New To Site? Need Help?

All times are GMT. The time now is 08:39 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