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

Servo Drive Sub woofer
Servo Drive Sub woofer
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 18th February 2005, 01:31 PM   #1
nbcaudio is offline nbcaudio  United States
diyAudio Member
Join Date: Feb 2005
Location: Orlando, Florida
Send a message via AIM to nbcaudio Send a message via MSN to nbcaudio
Default Servo Drive Sub woofer

I'm curious if there is a plan or schematic for a servodriven woofer. I'm talking about one that actually uses an actuater attached to the cone to get the push/pull motion. I also wonder about parts.

I know that a company called Servodrive builds subwoofers based on this principle. My idea is to experiment with this design with smaller speakers 10" and 12" and use them in full range 3 way cabinets.

Does anyone know where I can find drawings and parts for this type design? I confess that I'm a real newbie at this and my knowledge and experience is limited at best and is closer to non-exisistant.

Thanks for your replies and help.
Nathan Boone (Ken) Corlew
Joyful Noise Concepts
  Reply With Quote
Old 18th February 2005, 08:59 PM   #2
BassAwdyO is offline BassAwdyO  United States
diyAudio Member
BassAwdyO's Avatar
Join Date: Jun 2004
Location: Illinois
Send a message via AIM to BassAwdyO
doesnt the servodrive website have a drawing? if not, basically it works on the same concept as an auto engine's piston in reverse. you're converting rotation into pistonic movement.

While rotation is harmonic in 2 dimensions, pistonic is only harmoic in one. I believe the motors' armature actually twists one way then the other in this design and thus requires a low inertia moter.

I want to try a design using a flywheel and a piston system to make high intensity infrasound where the motor continuously turns.
The golden rule of DIY:
Build nice, or build twice!
  Reply With Quote
Old 22nd February 2005, 04:22 PM   #3
paulspencer is offline paulspencer  Australia
diyAudio Member
paulspencer's Avatar
Join Date: Sep 2003
Location: Melbourne, Australia
This review might interest you:

It was compared to a range of other quite expensive subs.

I'm not sure the technology is suitable for anything but fairly low bass, however. Apparently the servo drive is best for very high output down very low - LFE use. The distortion actually reduces as you turn it up to a point!
  Reply With Quote


Servo Drive Sub wooferHide 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
Servo drive midrange? thadman Multi-Way 2 20th November 2006 12:45 AM
Why is this woofer so difficult to drive properly. beppe61 Multi-Way 152 30th April 2006 01:07 PM
Servo sub woofer fcotton Subwoofers 31 21st June 2005 06:12 PM
servo motor for turntable drive Mikewong Analogue Source 2 18th March 2004 08:51 AM
servo motor for turntable drive Mikewong Analogue Source 3 4th February 2004 09:57 AM

New To Site? Need Help?

All times are GMT. The time now is 05:06 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio