Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Help needed with TB w3-926sd, w8-670c
Help needed with TB w3-926sd, w8-670c
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
Thread Tools Search this Thread
Old 11th December 2011, 12:52 PM   #1
osssyvan is offline osssyvan  Finland
diyAudio Member
Join Date: Dec 2010
Default Help needed with TB w3-926sd, w8-670c


I couldn't resist myself when I saw w3-926sd at 11e per unit. I also bought TB w8-670c as it was 30e (same unit than in logitech z-560). Now I have to figure out what to do with them. I am not sure if I calculate boxes for them but I'll try.

I was thinking about making small 2.1 setup for my desktop but there are some problems with that.

I have very small space for the FR units on the desk. The width has to be as small as possible, also depth should be kept to minimun (less than 20 cm, less would be better), height can be little more ( up to 30 cm or maybe more I think). Any suggestions on should I use sealed or BR and tuned to what? The amp will be topping tp-20 mk II (ta2020)

I was also wondering if I could somehow intercorporate that sub to my design as I am thinking that I can't get very low on those fullranges. I was wondering if I could source plate amp from an old logitech 2.1 system. I have no idea on the crossover on that though. I'd like to keep the sub as small as possible aswell. I'd rather have smaller size than very low bass. The size can be less than 30 cm deep, 25 wide and 60 cm tall.

I would also like to try bass management from via HD audio. It has possibility for low pass cut-off frequency on 25 Hz incrediments but not sure if it has any highpass for the fullranges.

I could also use the sub for HT use with my HK avr-142. Then the size could be different.

Any idea if I can make anything sensible from these and what should I do?

Technical data:

w8-670c: (from one german seller, can't recall which one)

Bauvorschlag: Einsatz im GHP Gehäuse mit 16 l. Volumen und einem Kondensator mit 110 µF Kapazität.

Technische Daten

Z: 8 Ohm
Z 1kHz: 28 Ohm
Z10kHz: 39 Ohm
Fs: 40 Hz
Re: 6,5 Ohm
Qms: 3,94
Qes: 0,41
Qts: 0,37
Vas: 25,86 l
Le: 0,715 mH
Sd: 376,27 cm2


Korb: Blech
Membran: Papier
Dustcap: Invers
Sicke: Schaum
Schwingspule ø: 38 mm
Xmax: 7,1 mm.
Magnetsystem: Ferrit
Polkernbohrung: ja


Aussendurchmesser: 20,95 cm
Einbaudurchmesser: 18,20 cm
Magnetdurchmesser: 12,00 cm
Tiefe: 11,7 cm
  Reply With Quote
Old 11th December 2011, 03:38 PM   #2
lost eden is offline lost eden  United Kingdom
diyAudio Member
Join Date: Sep 2009
I'm in a similar position to you, I have a pair of W3-871C & have just ordered 2x W8-670C to go with them. I'm thinking about making a 2.2 system (eg 2x satellites & 2x subs, with passive crossovers in the subs) but I'm probably going to make the satellites larger than you're thinking.

I'll definitely be interested to see what people suggest for the subs though, atm I'm trying to compare the W8-670C to the W8-740C which a lot more people seem to have used - we might be able to adapt a box designed for the latter & use it for the former.

I actually started a thread this morning here, which might get some replies useful to you as well --> http://www.diyaudio.com/forums/subwo...ml#post2815360

Oh I also bought a pair of the W3-926SD because they were so cheap, I might swap them with my W3-871C when I've built the boxes & see which I like more
  Reply With Quote
Old 11th December 2011, 04:50 PM   #3
osssyvan is offline osssyvan  Finland
diyAudio Member
Join Date: Dec 2010
Let's hope we will get some answers. I might go for passive crossovers aswell if I have to but I am thinking that a plate amp with suitable crossovers would do.

But if someone has suggestions for cheap plate amp that might work I'd be happy. Hypex modules are nice but I'm not sure if I want to pay over 100e for my 30e driver.
  Reply With Quote
Old 12th December 2011, 07:25 PM   #4
osssyvan is offline osssyvan  Finland
diyAudio Member
Join Date: Dec 2010
That pc speaker set was no-go. It was old creative with 12 W + 2x 4,5 W but I bought an used plate amp. It is simex brand but unknown type and power (over 100 W atleast)

I guess I am one step closer now. I'd just have to design the boxes but I think winisd will help me with that.
  Reply With Quote


Help needed with TB w3-926sd, w8-670cHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Voigt Pipe for TB W8-1808 Godzilla Full Range 12 10th September 2010 05:24 PM
Tang Band W3-593SF vs. Tang Band W3-926SD Zaputh Full Range 17 5th June 2009 11:37 PM
FS: TB W8-1363SB 8" Subwoofer saabracer23 Swap Meet 0 11th May 2007 12:49 AM
Tang-band 2-way (W3+W8) haffe Multi-Way 10 31st January 2007 11:11 PM
TB W8-704C mini Sonosub... nerd of nerds Subwoofers 14 19th March 2006 09:09 PM

New To Site? Need Help?

All times are GMT. The time now is 07:38 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio