Tang Band W8-1808 BVR or BLH options? - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

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 21st February 2012, 11:27 PM   #1
diyAudio Member
 
Join Date: Jan 2012
Location: New York
Default Tang Band W8-1808 BVR or BLH options?

Hi everyone,

I guess this question is directed mainly to the gurus of the great Chang-series of cabinets...

I have a pair of Tang Band W8-1808 which I have been using for about a year in a makeshift open baffle setup. I love the sound of them and had Fostex 207e before them, in BR cabinets, which are now in the closet (awaiting another project). The open baffles are supplemented by a sub, so there is plenty of kick. I do feel, however, that I am missing something in the upper bass, somewhere between the sub crossover point around 100 and perhaps 250 where I lose the TB driver's energy in the open baffle.

So, I've been thinking for a while that I would try capturing some of the TB's formidable energy in a cabinet somehow, to smooth out the response. Of course, I've now gotten accustomed to the OB spatial dynamics, and am hoping to avoid a "box" sound again. Thus the thought of going into horn territory. Slippery slope, I know...

I like the scale and appearance of the G-Chang kit, but want to make sure the design will work with the parameters of the drivers I have. I'm a bit challenged to do the math to calculate this, and hoping someone can help me in this respect, understanding that the Chang is designed for specific drivers. I've read that my drivers are good for open baffle but not necessarily good in a BLH design, but you guys would know better than me about this. I'm curious too about the Sumiko cabinet, which is similar in scale and design but more of a BLH rather than a BVR (but you knew that already...).

Here are the specs on the W8-1808:

DIAPHRAGM MTL Paper
SURROUND MTL Fabric
NOMINAL IMPEDANCE 8 W
DCR IMPEDANCE 6.8 W
SENSITIVITY 1W/1m 93 dB
FREQUENCY RESPONSE 45Hz-20K Hz
FREE AIR RESONANCE 45 Hz
VOICE COIL DIAMETER 38.5 mm
AIR GAP HEIGHT 14 mm
RATED POWER INPUT 30 W
MAXIMUM POWER INPUT 60 W
FORCE FACTOR, BL 5.28 TM
MAGNET WEIGHT ( oz) Neodymium
MOVING MASS 9.43 g
FERRO FLUID ENHANCED No
SUSPENSION COMPL. 1282 uMN-1
EFFEC.PISTON AREA 0.022 M2
Levc 0.048 mH
Zo 26 ohm
X-max 5 mm
Vas 88.14 Litr.
Qts 0.44
Qms 1.33
Qes 0.66

So, thanks in advance for your advice, and if anyone has had success in other cabinet types for these drivers, I'd be grateful to read about your experiences.

Cheers
  Reply With Quote
Old 21st February 2012, 11:51 PM   #2
diyAudio Member
 
Join Date: Dec 2010
Location: USA
No. Google half Chang and see my failure. Jon. I love the drivers just not in a Chang.
  Reply With Quote
Old 22nd February 2012, 02:33 AM   #3
mikje is offline mikje  United States
Soakin' up the Sound!
diyAudio Member
 
mikje's Avatar
 
Join Date: Feb 2008
Location: Bismarck, ND
I know nothing about how this driver would sound in a half-chang, but here's a project with it in a one. Half Chang Project Build
Mike
__________________
Marantz PM8003 amp, Jolida SJ502A, Squeezebox Touch, MLTL Continuums, DIY Carmichaels (Dayton, TangBand, Vifa); MarkAudio A 7.3 Frugalhorns, MarkAudio CHP-70s
  Reply With Quote
Old 22nd February 2012, 02:35 AM   #4
diyAudio Member
 
Join Date: Dec 2010
Location: USA
Mike. That's mine. Failed. It is also post here in DIY. Great driver bad enclosure.
  Reply With Quote
Old 22nd February 2012, 02:38 AM   #5
mikje is offline mikje  United States
Soakin' up the Sound!
diyAudio Member
 
mikje's Avatar
 
Join Date: Feb 2008
Location: Bismarck, ND
Quote:
Originally Posted by jonparkhurst View Post
Mike. That's mine. Failed. It is also post here in DIY. Great driver bad enclosure.
OOPS... Well I guess that's, um........ Midwifecrisis can get any questions he has answered by the author.
__________________
Marantz PM8003 amp, Jolida SJ502A, Squeezebox Touch, MLTL Continuums, DIY Carmichaels (Dayton, TangBand, Vifa); MarkAudio A 7.3 Frugalhorns, MarkAudio CHP-70s
  Reply With Quote
Old 22nd February 2012, 03:56 AM   #6
diyAudio Member
 
Join Date: Jan 2012
Location: New York
Default Curious...

I read your description of the build, lovely cabinets indeed. Was it just that the bass response wasn't as low as you'd expected? Did they sound bad in any other respect? I'm just trying to get a handle on what would work, if the Half-Chang didn't? Or, rather, how to dimension the cab properly (presumably it has to be bigger, but just how big?)?

Another option I've considered for them was, ala MJ King or the Lampizator guy, adding a couple of 15" woofers in H-frames, but this means another level of commitment (more drivers, passive crossovers, etc.). And a BIB enclosure doesn't seem right either, too massive for what could otherwise be an elegant solution. And as handsome as Bob Brines' work is, I'm shying away from a bass reflex cabinet for them, mainly since I'm curious to experience a horn sound with these drivers.

Another option, just to make this more complicated: anyone tried something akin to the Saba Cello / Auditorium 23 style of cabinet? That was intriguing, but I'm not sure I have the tools for it. Aside from the looks, the idea of a semi-open cabinet in a non-box shape is compelling.

Picture attached showing my system with one of my speakers, to show what I'm playing with. Sorry it's crooked, was trying to get it all into the frame.

Thanks for sharing your experience, Jon. Were you able to get other drivers to work in the cabs you made, at least?

Best,
Sean
Attached Images
File Type: jpg IMG_0401.jpg (507.9 KB, 428 views)
  Reply With Quote
Old 22nd February 2012, 04:11 AM   #7
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 jonparkhurst View Post
Great driver bad enclosure.
Nothing wrong with the cab if used with the right driver.

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 22nd February 2012, 04:49 AM   #8
diyAudio Member
 
Godzilla's Avatar
 
Join Date: Nov 2005
Location: New York
The driver sounds very good in a small sealed cabinet too. It did not sound thin at all in approx a .5cf box. Add your sub and you may get the sound you like. I'd put it into a larger sealed box based on simulations but the point is i put it into a box i had lying around, stuffed it lightly and the 1808 sounded great.

Just another option to explore before building unusual cabinets with your fingers crossed.

Zilla
  Reply With Quote
Old 22nd February 2012, 08:04 AM   #9
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Just to point out, as Dave mentions, the Chang design per se is solid for what it is. If you try to use it with a driver that it was not designed for, and is basically unsuitable, that's hardly the fault of the cabinet is it? The 1808 will need a larger box.

Last edited by Scottmoose; 22nd February 2012 at 08:07 AM.
  Reply With Quote
Old 22nd February 2012, 08:17 AM   #10
diyAudio Member
 
Join Date: Jan 2012
Location: New York
Default agreed

Indeed, I'm trying to avoid such mistakes myself. My problem is, I don't have any experience designing speakers, and wish to adapt an existing design to suit the drivers I'd like to use. I'm curious whether something like the G-Chang might be suitable with the TB driver, if it's properly scaled. For your wise counsel, I'd be humbly obliged...
  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
Tang Band W8-1808 Cabinet majerjack Full Range 35 8th October 2013 06:20 PM
Tang Band W8-1808 in a bi-amped FAST majerjack Full Range 17 5th February 2012 11:06 AM
Tang Band 1808 in BLH Half Chang jonparkhurst Full Range 48 30th September 2011 01:12 AM
Zobel for Tang Band W8-1808? majerjack Full Range 9 12th September 2010 11:42 PM
Tang Band W8-1808 open baffle impressions Racket Scientist Full Range 3 23rd May 2010 03:47 PM


New To Site? Need Help?

All times are GMT. The time now is 01:09 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