Speakerplans.com Homepage
Forum Home Forum Home > General > General Forum
  New Posts New Posts RSS Feed - Dead drivers?
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Dead drivers?

 Post Reply Post Reply Page  123 4>
Author
Message
re-production View Drop Down
Registered User
Registered User
Avatar

Joined: 16 February 2017
Location: Suffolk UK
Status: Offline
Points: 90
Post Options Post Options   Thanks (0) Thanks(0)   Quote re-production Quote  Post ReplyReply Direct Link To This Post Topic: Dead drivers?
    Posted: 21 April 2018 at 7:30pm
Hello All,

Last night at our gig we running oberton 18xb1500 from an ab1590b bridged per driver we set limiters so that the amps were running just into Amber on full tilt. I left for 45 mins and came back and there was nothing from the obertons. They said the drivers slowly got quieter and quieter until the stopped working over 45 minutes. This happened to both drivers off both amps. Any thoughts on what happened? 
Thanks 
Back to Top
njw View Drop Down
Old Croc
Old Croc
Avatar

Joined: 26 March 2010
Location: S. Wales
Status: Offline
Points: 2044
Post Options Post Options   Thanks (0) Thanks(0)   Quote njw Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2018 at 11:19pm
Have you tested the drivers since the gig? 
Back to Top
re-production View Drop Down
Registered User
Registered User
Avatar

Joined: 16 February 2017
Location: Suffolk UK
Status: Offline
Points: 90
Post Options Post Options   Thanks (0) Thanks(0)   Quote re-production Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2018 at 11:25pm
yeah took the speakon from the tops and put it in the subs and no noise. The main question is if it could be the obertons not liking being pumped for 7 hours straight in a hot room
Back to Top
njw View Drop Down
Old Croc
Old Croc
Avatar

Joined: 26 March 2010
Location: S. Wales
Status: Offline
Points: 2044
Post Options Post Options   Thanks (0) Thanks(0)   Quote njw Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2018 at 11:39pm
Are the amps that were powering the Obertons still working ok? 
Back to Top
re-production View Drop Down
Registered User
Registered User
Avatar

Joined: 16 February 2017
Location: Suffolk UK
Status: Offline
Points: 90
Post Options Post Options   Thanks (0) Thanks(0)   Quote re-production Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2018 at 12:24am
Have not tested them by themselves but will give it a shot. Didn't have anything to test them with at the time
Back to Top
Conanski View Drop Down
Young Croc
Young Croc
Avatar

Joined: 26 January 2006
Location: Canada
Status: Offline
Points: 1462
Post Options Post Options   Thanks (0) Thanks(0)   Quote Conanski Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2018 at 1:20am
Originally posted by re-production re-production wrote:

Hello All,

Last night at our gig we running oberton 18xb1500 from an ab1590b bridged per driver. Any thoughts on what happened?


1300w of never ending heavy bass into a driver that is only rated 750w RMS. What you say? AES pink noise test signal has 6dB crest factor so 1500w AES = 750w RMS. A sine wave only has 3dB crest factor, did your processor limited bass even have that much?


Edited by Conanski - 22 April 2018 at 1:23am
Back to Top
re-production View Drop Down
Registered User
Registered User
Avatar

Joined: 16 February 2017
Location: Suffolk UK
Status: Offline
Points: 90
Post Options Post Options   Thanks (0) Thanks(0)   Quote re-production Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2018 at 10:09am
The driver is rated at 1500w rms, 3000w AES
1300w of house music should be fine
Back to Top
Hemisphere View Drop Down
Old Croc
Old Croc


Joined: 21 April 2008
Status: Online
Points: 2006
Post Options Post Options   Thanks (0) Thanks(0)   Quote Hemisphere Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2018 at 11:12am
It's rated 1500w AES, 3000w program according to that link.

That said, I agree 1300w of house music should pose no problems.

@Conanski, lol at the idea of 'music' with an RMS crest factor lower than a continuous maximum amplitude sinewave.
Phase 1: Post on Speakerplans
Phase 2: ?????
Phase 3: Profit!
Back to Top
fatfreddiescat View Drop Down
Young Croc
Young Croc


Joined: 15 October 2010
Location: N.E.Wales
Status: Offline
Points: 544
Post Options Post Options   Thanks (0) Thanks(0)   Quote fatfreddiescat Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2018 at 1:29pm
If these were loaded in a small sealed chamber then you could easily halve their long term rated power. I once made the mistake of assuming no harm would come to a pair 600W 15XB's driven with a 300 Watt p/ch amp with hi/lo pass and clip limiters, came back toast - bloomin mashed ravers, were loaded in Martin 115 horn bins.
Back to Top
re-production View Drop Down
Registered User
Registered User
Avatar

Joined: 16 February 2017
Location: Suffolk UK
Status: Offline
Points: 90
Post Options Post Options   Thanks (0) Thanks(0)   Quote re-production Quote  Post ReplyReply Direct Link To This Post Posted: 23 April 2018 at 10:36am
These are loaded in EAW BH882, fairly large chamber 
Back to Top
Hemisphere View Drop Down
Old Croc
Old Croc


Joined: 21 April 2008
Status: Online
Points: 2006
Post Options Post Options   Thanks (0) Thanks(0)   Quote Hemisphere Quote  Post ReplyReply Direct Link To This Post Posted: 23 April 2018 at 12:37pm
FFC: They really should have been fine. Were they being used as kick bins or subs? I would suspect undisclosed abuse/tampering especially if kicks.
Phase 1: Post on Speakerplans
Phase 2: ?????
Phase 3: Profit!
Back to Top
re-production View Drop Down
Registered User
Registered User
Avatar

Joined: 16 February 2017
Location: Suffolk UK
Status: Offline
Points: 90
Post Options Post Options   Thanks (0) Thanks(0)   Quote re-production Quote  Post ReplyReply Direct Link To This Post Posted: 23 April 2018 at 12:40pm
They were being run as general bass, 34hz too 110hz. I am considering calling Oberton and seeing if they have anything to say.
Back to Top
 Post Reply Post Reply Page  123 4>
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.01
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.063 seconds.