Speakerplans.com Homepage
Forum Home Forum Home > General > General Forum
  New Posts New Posts RSS Feed - BSS FDS 360 - really quiet output
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

BSS FDS 360 - really quiet output
 Post Reply Post Reply Page  123 4>
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Trig View Drop Down
Registered User
Registered User


Joined: 28 June 2006
Status: Offline
Points: 40 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trig Quote  Post ReplyReply Direct Link To This Post Topic: BSS FDS 360 - really quiet output
    Posted: 19 January 2020 at 8:02pm
Hi guys, we just bought a couple of BSS FDS 360 crossovers to run an old turbosound system. We hooked them up today and even with the master volume on our mixer at full and the gains up full on the 360 and our amps the output was really quiet. It sounded like a mobile phone! Does anyone have experience with these units? The cards inside have -6db marked on them, could this be the problem? The speakers are TMS2's, running off ecler PAM amps and the mixer is an Allen and Heath xone 62 - we've used the same combination of kit with a BSS minidrive and the system is very loud. Have I missed something and have a setting enabled that brings the signal right down on the 360's? Or could they be knackered? Any advice would be much appreciated, I was expecting the rig to sing using these as I've read good things so I'm a bit confused here!
Back to Top
ceharden View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 05 June 2005
Location: Southampton
Status: Offline
Points: 11776 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 9:28pm
They can suffer with bad connections to the cards.  Had to replace the sockets on some in the past.

They're quite old now so may require a little attention to get them fully working.
Back to Top
ceharden View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 05 June 2005
Location: Southampton
Status: Offline
Points: 11776 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 9:29pm
Also, pay careful attention to the wiring and pin-outs on the XLR's, especially if you're using any unbalanced cables.
Back to Top
Trig View Drop Down
Registered User
Registered User


Joined: 28 June 2006
Status: Offline
Points: 40 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trig Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 9:35pm
Hi, thanks for your replies. Do you mean the wiring to the pins inside the unit may need redoing, or that the wiring may be different to the way the cables are wired? 
Back to Top
ceharden View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 05 June 2005
Location: Southampton
Status: Offline
Points: 11776 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 9:40pm
The outputs are Unbalanced, Pin 3 Hot, which is different to most modern equipment.


Also check the options on the back are correct using the manual above.
Back to Top
Trig View Drop Down
Registered User
Registered User


Joined: 28 June 2006
Status: Offline
Points: 40 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trig Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 9:48pm
Ah that could be the problem then. Would an FCS 960 be wired in a similar way? 
Back to Top
Digbethdave View Drop Down
Registered User
Registered User
Avatar

Joined: 16 November 2018
Status: Offline
Points: 406 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Digbethdave Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 10:38pm
Checked the dip switches? 
Back to Top
Trig View Drop Down
Registered User
Registered User


Joined: 28 June 2006
Status: Offline
Points: 40 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trig Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 10:49pm
If you mean the 2/3/4 way selector or the limiter switches then yes they were correct / off
Back to Top
Peter Jan View Drop Down
Young Croc
Young Croc
Avatar

Joined: 16 December 2008
Location: Belgium
Status: Offline
Points: 1019 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Jan Quote  Post ReplyReply Direct Link To This Post Posted: 19 January 2020 at 11:49pm
Could be the output relay contacts being oxidated, they are/were notorious for that.
Back to Top
Trig View Drop Down
Registered User
Registered User


Joined: 28 June 2006
Status: Offline
Points: 40 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Trig Quote  Post ReplyReply Direct Link To This Post Posted: 20 January 2020 at 12:13pm
[QUOTE=Peter Jan]Could be the output relay contacts being oxidated, they are/were notorious for that.

Would that be obvious if I open them up and check inside? Is it an easy fix or not worth doing 
Back to Top
Earplug View Drop Down
Old Croc
Old Croc


Joined: 03 January 2012
Location: Europe
Status: Offline
Points: 7216 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Earplug Quote  Post ReplyReply Direct Link To This Post Posted: 20 January 2020 at 1:22pm
Originally posted by ceharden ceharden wrote:

Also, pay careful attention to the wiring and pin-outs on the XLR's, especially if you're using any unbalanced cables.


Almost definitely this.

Does your mixer (and amps) have properly balanced in/outs? Are you using balanced XLR-XLR cabling? Or unbalanced jacks? If jacks, you will need to make up some cables with XLR pin 3 to the jack 'live', or swap pins 2 & 3 on one side of the XLR-XLR.

And that may be worth doing anyway, as you could get some odd effects if you happen to try sum your system with another that has the (standard) pin 2 hot.   Ouch
Earplugs Are For Wimps!
Back to Top
Peter Jan View Drop Down
Young Croc
Young Croc
Avatar

Joined: 16 December 2008
Location: Belgium
Status: Offline
Points: 1019 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Peter Jan Quote  Post ReplyReply Direct Link To This Post Posted: 20 January 2020 at 6:22pm
Originally posted by Trig Trig wrote:

[QUOTE=Peter Jan]Could be the output relay contacts being oxidated, they are/were notorious for that.

Would that be obvious if I open them up and check inside? Is it an easy fix or not worth doing 


It's not obvious from looking at them, to know they are defective.
Back in the day it was common practice after some years of use, especially when not used over longer periods. Just replace them and yes, I think it's totally worth it. Few ££ for relays and barely an hour work for someone knowing his/her way around electronics.
Back to Top
 Post Reply Post Reply Page  123 4>

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.078 seconds.