System Pictures & Description - Page 10 - 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 8th December 2003, 02:18 PM   #91
claudio is offline claudio  Italy
diyAudio Member
 
claudio's Avatar
 
Join Date: Feb 2002
Location: Italy
Default DBR software

Hello,
exists a program to simulate DBR. It is in italian, was written in 1992, and is in DOS. The program name is DCAAV (Double Chamber Asymetric At Sight) and can be downloaded here: DCAAV

Regards

Claudio
  Reply With Quote
Old 8th December 2003, 02:27 PM   #92
claudio is offline claudio  Italy
diyAudio Member
 
claudio's Avatar
 
Join Date: Feb 2002
Location: Italy
Quote:
you can find some informations here too (in english this time ) in a different kind of box (2 ports in front of the box), but the calculation seems to be more appromixate : http://www.diysubwoofers.org/prt/dual_chamber.htm
Vince, this is the Double Chamber Reflex presented in 1961 by G.L.Auspurger. It is a completely different system from the Elipson-Fostex DBR-DCAAV!

Regards

Claudio
  Reply With Quote
Old 8th December 2003, 02:32 PM   #93
Nielsio is offline Nielsio  Netherlands
diyAudio Member
 
Nielsio's Avatar
 
Join Date: Nov 2002
Location: The Netherlands
Dommi:

What's the XO between the ~Eminence and the tweeter?

Does the ~Eminence have a tweeter-cone? / Do you know anything about the frequency-respons of this driver?

Is the tweeter open-baffle or closed?

I'm asking these questions because I find it an interesting config, but it might also be wise to put some sound-damping on the wall behind the speakers, in the case that mid/high-frequencies are also backfired.

I also see an Audionet SAM amplifier, which confuses me in the sense that it's way overpowered for your system. More suitable options that come to mind: low powered triode, non-inverted chipamp or buffered inverted chipamp (DIY or commercial).
__________________
Behringer DEQ2496 . Twisted Pear Buffalo II DAC . JLTi tube buffered LM3875 . Supravox 215 Signature Bicone 125L vented
  Reply With Quote
Old 8th December 2003, 02:50 PM   #94
Vince35 is offline Vince35  France
diyAudio Member
 
Vince35's Avatar
 
Join Date: Nov 2003
Location: (35) near Rennes
Send a message via MSN to Vince35
Thanks everybody to the differents experiences on the double tuned bass reflex.

I will soon build new boxes for my loudpseakers, so I will compare the "résonateur" of Dominique Pétoin and that with the holes replacing the internal port : a friend of mine tell me that was quite easy to do and very effective.

I will surely post a topic to describe which is the better compared to a simple bass reflex box.


Vincent
__________________
Sorry if my english is bad...
  Reply With Quote
Old 8th December 2003, 10:42 PM   #95
michael is offline michael  Australia
diyAudio Member
 
Join Date: Sep 2003
Location: Adelaide Hills
Send a message via MSN to michael
thanks Vince for the info on the DBR, look forward to seeing that thread
  Reply With Quote
Old 8th December 2003, 11:49 PM   #96
Bose(o) is offline Bose(o)  Canada
diyAudio Member
 
Join Date: Dec 2001
Location: Ottawa, Ontario, Canada
I believe that Bose used some type of DBR principle in the old Bose 701s. Apparently it's like double, triple, quadruple Reflex porting or something. Or wait, is it an Isobaric-BP design?
Click the image to open in full size.
__________________
ERTW 4 life!
"the day has 24hours. If that is not enough take the night."-Roemhild
  Reply With Quote
Old 9th December 2003, 12:26 AM   #97
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 Bose(o)
Or wait, is it an Isobaric-BP design?
Yep that's it.

There was some discussion on the FR Forum about Double Bass Reflex... i may also have some stuff on my HD (if KW doesn't beat me to it).

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 9th December 2003, 05:19 AM   #98
moe29 is offline moe29  United States
diyAudio Member
 
moe29's Avatar
 
Join Date: Dec 2002
Location: Florida
Send a message via AIM to moe29 Send a message via Yahoo to moe29
...thought i'd post a picture of my Straight 8's a Bottlehead kit.
they aren't as DIY as what most of you are doing, but for me they
were a project! I run these with a ~5 watt X-SOZ amp and a
BZLS pre. The 8's are very nice sounding speakers and have
satisfying bass without a sub. Great speakers for low watt amp
Attached Images
File Type: jpg s8.jpg (65.0 KB, 13159 views)
  Reply With Quote
Old 9th December 2003, 07:15 AM   #99
r0cket- is offline r0cket-  United States
diyAudio Member
 
Join Date: Aug 2003
Location: Portland, OR
Default Poor quality pictures, but you get the idea...

http://home.earthlink.net/~mdis29a/images/newroom1.jpg

My apartment is incredibly cramped, thus the poor component positioning.

That's an NHT Model One on the far left. Sitting next to that is my broken Adcom GCD-600 and Harmon-Kardon ST-5 turntable, which I've just about got back into working order (like everything else, it was a thrift store find). Next to that is my computer rack--dual Athlon XP 1800s in the big box, PII-233 in the little box, and Sparc IIi 360 in the rack chassis under the monitor, if anyone cares. Component rack next to that, with my Classe CA-101 power amp and Kyocera DA-410cx CDP. Sitting atop the CDP is the world's crappiest passive preamp (a dual 10k, center-indexed pot salvaged from the tone control section of a 30 year old Proton receiver, soldered directly to some hacked-up interconnects, and all nailed to chunk of wood I pulled off a bird cage). Under the amp is my Paradigm sub.

http://home.earthlink.net/~mdis29a/images/newroom2.jpg

And that's the other half. The speaker stand is obviously DIY. I ran out of paint in the middle of finishing the thing this weekend
  Reply With Quote
Old 9th December 2003, 12:01 PM   #100
BAM is offline BAM
diyAudio Member
 
Join Date: Sep 2001
Location: Carmel, IN; West Lafayette, IN
Send a message via AIM to BAM
That Bose is just your textbook 8th-order bandpass with extra port area to prevent chuffing. I hear it's like a 6th-order bandpass with an outer chamber tuned to Fs that actually passes the signal to the air.
  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



New To Site? Need Help?

All times are GMT. The time now is 08:20 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