DIY TANNOY DC 3000 - Page 2 - 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 11th October 2010, 10:51 PM   #11
diyAudio Member
 
Join Date: Mar 2009
Quote:
Originally Posted by Charles Darwin View Post
Yes, adding a port would give you better bass extension. All their drivers are designed to be ported.
To determine the port area and length you need the Thiele/Small parameters.
Unfortunately I can't find them anywhere hence I suggest you contact Roger at Lockwood Audio.co.uk. He is very helpful and if anybody knows it'll be him. Lockwood have been working with Tannoy for about 50 years now and are the only Tannoy accredited supplier of spares for all drivers no matter how old.
Hi thanks a lot mate i will ask him then. Is it the size and length of the port i need, These speaker cabinets are same volume as the dc 3000 so could i just copy the position and size of port from them. I took the drivers cross overs from some tannoy dc 2000 i had i think thay share the same parts just a biger cabinet
  Reply With Quote
Old 11th October 2010, 11:42 PM   #12
diyAudio Member
 
Join Date: Nov 2009
Location: Birmingham, UK
If they do use the same drivers you should be ok taking the port dimensions of the DC3000. You can put the port where ever you like really. Personally I do not like ports on the rear as it limits where you can place the speakers.
  Reply With Quote
Old 11th October 2010, 11:55 PM   #13
taloyd is offline taloyd  United States
diyAudio Member
 
Join Date: Apr 2004
Location: Los Angeles, CA, USA
Post separate the drivers!

Hello,

I'm pretty sure you should have a physical divider between the woofer and the coaxial driver (the top and the bottom), otherwise the woofer will be compressing the same air space as the coaxial, and you'll have some problems with that, IMHO.

cheers,
-Tal
  Reply With Quote
Old 12th October 2010, 12:13 AM   #14
diyAudio Member
 
Join Date: Nov 2009
Location: Birmingham, UK
I'd say if the original speakers were separated do it, if not don't bother.
Having both in the same compartment should be the same as having two woofers in one box. The woofer should be the same as the DualConcentric minus the tweeter.The tweeter itself does not open to the rear so it will be unaffected either way.
Again I suspect Roger would know more.
  Reply With Quote
Old 12th October 2010, 01:12 AM   #15
diyAudio Member
 
LucasAdamson's Avatar
 
Join Date: Feb 2009
Quote:
Originally Posted by Charles Darwin View Post
Yes, adding a port would give you better bass extension. All their drivers are designed to be ported.
Although I agree that adding a port will give better bass extension, and personally I wouldn't hesitate, (except to do critical research )I have had a pair of the 611s, which superseded this model, and they had no ports. Sealed box. Two speakers - 1x DC 8" & 1x dedicated bass 8"
__________________
Lucas
  Reply With Quote
Old 12th October 2010, 01:36 AM   #16
diyAudio Member
 
Join Date: Mar 2009
Hi all thanks again for your help i have sorter put devider from concentric driver and bass driver. Remember i took these out of dc 2000 which were not bad sounding but a bit bass lacking and i found the midrange a bit compresed. The sound with these biger cabinet tannoys is more open and natural but for me lacking that bottom end whichi exspected to be better. Thought i would mention that im feeding the speakers with a modified cd67 and 41hz amp which is great
  Reply With Quote
Old 12th October 2010, 01:44 AM   #17
diyAudio Member
 
Join Date: Mar 2009
Quote:
Originally Posted by Charles Darwin View Post
If they do use the same drivers you should be ok taking the port dimensions of the DC3000. You can put the port where ever you like really. Personally I do not like ports on the rear as it limits where you can place the speakers.
Iknow what you mean i would rather put the port in the front then i wont have to worry about distance from wall too much. But how much could it change the sound of the speakers if i put the port on the front instead of the back
  Reply With Quote
Old 12th October 2010, 11:39 AM   #18
diyAudio Member
 
Join Date: Nov 2009
Location: Birmingham, UK
Quote:
Originally Posted by LucasAdamson View Post
Although I agree that adding a port will give better bass extension, and personally I wouldn't hesitate, (except to do critical research )I have had a pair of the 611s, which superseded this model, and they had no ports. Sealed box. Two speakers - 1x DC 8" & 1x dedicated bass 8"
You might be right there and I hang my head in shame!
In my defense the next model down in the Sixes series is ported and the model up uses a passive radiator and although I am somewhat of a Tannoy aficionado my interests lie mostly with their paper-coned drivers of 10" or more in diameter. I ended up with two LittleReds and a pair of DC4000s. Porting is essential for those as otherwise they start to roll off at 150Hz.
  Reply With Quote
Old 12th October 2010, 12:18 PM   #19
diyAudio Member
 
LucasAdamson's Avatar
 
Join Date: Feb 2009
Sir Darwin, I didn't mean to be pompous and challenge your knowledge of the "evolution of the series." Perhaps my old 611s are somewhat of a "missing link."

Little reds - now you're talking - lovely drivers!
__________________
Lucas
  Reply With Quote
Old 12th October 2010, 12:54 PM   #20
diyAudio Member
 
Join Date: Nov 2009
Location: Birmingham, UK
Indeed!
Which is why I bought the DC4000 which use the same driver as the LittleReds.
Better still I paid 175 for the pair, exactly half as much as I paid for the LittleReds!
Would like some Monitor Golds but the prices for those are ludicrous.
  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
Tannoy DC2000/3000 bremen nacht Multi-Way 19 13th July 2013 10:37 PM
HELP -> Denon POA-3000 Service Manual or DC Offset Problem megasat16 Solid State 2 1st April 2009 12:59 PM
Tannoy DC Replacement Advice Needed Thomo Multi-Way 9 28th December 2007 09:51 PM
the best diy speakers for $3000! legendaryfrog Multi-Way 93 19th December 2006 02:05 AM
Tannoy 12" DC in OB inrank Multi-Way 3 23rd November 2006 04:10 PM


New To Site? Need Help?

All times are GMT. The time now is 03:34 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