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

Figuring out speaker properties + Building enclosure
Figuring out speaker properties + Building enclosure
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 Today, 03:47 PM   #1
ledman is online now ledman
diyAudio Member
 
Join Date: Jul 2018
Default Figuring out speaker properties + Building enclosure

Hey everyone Completely new to building audio stuff, sorry for the wall of text ahead of time - lots of noob questions

I have two 15" GBS 1566 subwoofer chassis that fell into my lap, and i have no clue what exactly their properties are - can't find much info on the internet either.

Screenshot - 94d85bb81e40abe6602200b1d63c5edc - Gyazo Screenshot - ddb04cc11e05e655d6e72bee5ebc6dce - Gyazo

Some general questions i have are, how would i best clean these? The guy i got them from said they were sitting around for a good while, the back side of the cone and the inside of the surround is super dirty - just wipe with wet towel? the backside of the cone feels like paper mache and i am worried that they could get deformed when wet? I also assume there is some dirt inside the magnet gap and the little vent on the back - can i just remove the shiny plate? Is that just shielding or will the motor fall apart if i do that and force me to re-align everything?

Things i know about them are that they have dual 4 Ohm voice coils (3" i think) and have 1000W printed on them. I found some dodgy info online stating they do 600W rms but that is about it

I haven't dared to turn them past around 300W RMS each because the free air excursions at some frequencies are enormous and i am worried of smashing the voice coil into the magnet.
On one of them one of the tinsel leads smacks into the back of the cone at higher powers, barely happens when playing music but very noticeable on raw sinewaves - any recommendations on how to fix that?

The dustcap on one of them is slightly peeling off (still sealed and seems solid, just a spot that got unglued) - any glue recommended for fixing this?

i didn't do an exact measurement on this yet but they appear to resonate somewhere between 30 and 31hz, I estimate the Xmax to be slightly over 30mm but i am not certain on that, not sure how to measure it either.

How would i go about determining the properties of the chassis or size for a sealed box? I want to build two seperate sealed sub enclosures, maybe build something horn loaded later. I also considered Dipole but i think i'd rather have stereo bass. They will be mostly used for music.

I also want to change color of the cone and the surround at some point, can i just get an off the shelf black 15" surround and replace the blue one on these? I'd spray paint or airbrush the cones themselves since it's not like i am messing up any special characteristics by slightly increasing cone mass, given there are no specs anyways.

Last edited by ledman; Today at 04:31 PM.
  Reply With Quote

Reply


Figuring out speaker properties + Building enclosureHide 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
Help figuring out the Silent Speaker EmuMannen Multi-Way 55 30th May 2016 10:56 PM
Building an enclosure for an unknown speaker? KHesse Parts 4 10th November 2014 01:31 PM
need help with figuring out the connections on an old speaker yourownfree Multi-Way 12 21st December 2009 08:12 AM
Figuring out speaker problems bg4533 Multi-Way 4 22nd August 2005 05:38 PM
building an enclosure atnaat Subwoofers 16 28th June 2005 04:49 AM


New To Site? Need Help?

All times are GMT. The time now is 04:43 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
Wiki