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

precision devices pd 1550
precision devices pd 1550
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 25th November 2012, 06:50 PM   #21
KSTR is offline KSTR  Germany
diyAudio Member
KSTR's Avatar
Join Date: Jul 2007
Location: Central Berlin, Germany
PD1550 is a very OK driver but has a low Xmech (older design motor) and tends to bottom out the VC when overdriven. Adding mass would make the issue even more severe.

Why not just EQ it, that's more elegant than throwing away motor force. You'd need some voltage headroom of the amp to overcome the back-EMF so a class-D type is best suited in terms of total true efficiency which is much higher than when loaded down with additional mass.

Last edited by KSTR; 25th November 2012 at 06:53 PM.
  Reply With Quote
Old 26th November 2012, 10:51 AM   #22
tinitus is offline tinitus  Europe
diyAudio Moderator R.I.P.
Join Date: Nov 2005
precision devices pd 1550
Originally Posted by KSTR View Post
PD1550 is a very OK driver but has a low Xmech ......

Why not just EQ it, that's more elegant.....
bottoms at 22mm
PA disco, or quality hihi ?

why is EQ more elegant
isnt it just spoiling the Q electrically ?

but you are right
it should to be considered carefully
I might prefer adding mass to the PD186
would result in very low Fs, and a Qts suited for closed design
has more Xmax, and its a better size
and for low bass I would suggest a heavier and more sturdy cone anyway
higher Qts should not be any problem at all with my preferred SPL(low)
  Reply With Quote


precision devices pd 1550Hide 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
Precision Devices PD.8BM20 inrank Multi-Way 4 21st July 2010 07:53 AM
Precision devices...... Village Plank Multi-Way 10 14th December 2008 07:49 PM
Precision Devices PD.158 Xmax? buggsson Subwoofers 6 20th May 2008 06:55 AM
Precision Devices tinitus Multi-Way 1 8th January 2008 12:57 AM
Precision devices KevinTams Subwoofers 111 22nd December 2005 02:41 PM

New To Site? Need Help?

All times are GMT. The time now is 05:41 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio