Tannoy Dual variable distributed port system

AuroraB · 25th January 2008, 01:19 PM

Anybody seen these new Tannoy series, and what exactly is "Dual variable distributed port system" ?... --aperiodic damping??

http://www.tannoy-speakers.com/s.php...erbury+SE&s=27

BHTX · 25th January 2008, 05:20 PM

From the manual..

"The low frequency output of the loudspeaker in the range of 25 to 100 HZ may be adjusted by operating the two sliding port openings on each side of the cabinet. Each port may be varied from fully open (full distributed port operation, both slides in upper position) to fully closed (infinite baffle or acoustic suspension operation, both port slides in the downward position). When both ports are fully open a very full rich bass response will be heard, when fully closed the bass response becomes more subdued. The correct setting is a matter for personal preference and local acoustic conditions. With one port open and the other closed the bass response will be 'level' and this position should be used for initial evaluation.

How to adjust the Variable Distributed Port System for your music in your room:

Loudspeaker in corner - Closed
Loudspeaker clear of wall - Open
Loudspeaker against wall - Either closed or One Open

The above suggestions are for guidance only. The music you listen to is also important - in general classical and light music will tend to sound more natural with the ports closed. Rock music will sound more exciting with one or both ports open. Experiment with your kind of music in your room. VDPS gives more choices of loudspeaker position in any room, this providing the opportunity to optimize placement for the best stereo effect.

The aural effect of the variable distributed port may not be obvious unless programme material contains bass frequencies within the band of 100 Hz."

AuroraB · 25th January 2008, 08:26 PM

Well, - I read that from the manual myself, and that was what lead me to speculate about a sort of variable aperiodic damping....
Just quite can't figure this being done with ordinary reflex ports..varying the opening, closing one or more ports...???

The larger Tannnoys have always been interesting to me, but it will be long time before I get a chance to listen to them these days...
only crappy chain stores left in my area <sigh>

felixx · 26th September 2008, 06:29 AM

It's interestind exactly how can adjust such ports.
Any thoughts?

25th January 2008, 01:19 PM	#1
AuroraB diyAudio Member Join Date: May 2001 Location: Norway, -north of the moral circle..	Tannoy Dual variable distributed port system Anybody seen these new Tannoy series, and what exactly is "Dual variable distributed port system" ?... --aperiodic damping?? http://www.tannoy-speakers.com/s.php...erbury+SE&s=27

26th September 2008, 06:29 AM	#4
felixx diyAudio Member Join Date: Feb 2005 Location: in center	It's interestind exactly how can adjust such ports. Any thoughts? __________________ "I'm glad I can build my own mistakes."

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
old part - dual variable inductor...see pic	redrabbit	Parts	0	6th January 2009 01:49 AM
Tannoy HPD Dual Concentric 15inch	JRKO	Swap Meet	6	22nd December 2007 02:18 PM
Single Port Vent Better than Dual Port?	Daveis	Multi-Way	18	15th July 2007 05:12 AM
Tannoy HPD 315 A dual concentrics	Puggie	Swap Meet	0	13th March 2006 12:12 PM
Help with Tannoy Dual Concentrics?	pinkmouse	Multi-Way	8	21st December 2003 09:38 AM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

25th January 2008, 05:20 PM	#2
BHTX diyAudio Member Join Date: Feb 2006	From the manual.. "The low frequency output of the loudspeaker in the range of 25 to 100 HZ may be adjusted by operating the two sliding port openings on each side of the cabinet. Each port may be varied from fully open (full distributed port operation, both slides in upper position) to fully closed (infinite baffle or acoustic suspension operation, both port slides in the downward position). When both ports are fully open a very full rich bass response will be heard, when fully closed the bass response becomes more subdued. The correct setting is a matter for personal preference and local acoustic conditions. With one port open and the other closed the bass response will be 'level' and this position should be used for initial evaluation. How to adjust the Variable Distributed Port System for your music in your room: Loudspeaker in corner - Closed Loudspeaker clear of wall - Open Loudspeaker against wall - Either closed or One Open The above suggestions are for guidance only. The music you listen to is also important - in general classical and light music will tend to sound more natural with the ports closed. Rock music will sound more exciting with one or both ports open. Experiment with your kind of music in your room. VDPS gives more choices of loudspeaker position in any room, this providing the opportunity to optimize placement for the best stereo effect. The aural effect of the variable distributed port may not be obvious unless programme material contains bass frequencies within the band of 100 Hz."

25th January 2008, 08:26 PM	#3
AuroraB diyAudio Member Join Date: May 2001 Location: Norway, -north of the moral circle..	Well, - I read that from the manual myself, and that was what lead me to speculate about a sort of variable aperiodic damping.... Just quite can't figure this being done with ordinary reflex ports..varying the opening, closing one or more ports...??? The larger Tannnoys have always been interesting to me, but it will be long time before I get a chance to listen to them these days... only crappy chain stores left in my area <sigh>

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)