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Crest CA6 bridged output

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Lucasdude View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lucasdude Quote  Post ReplyReply Direct Link To This Post Posted: 09 March 2022 at 6:02pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

There is no reason why you cannot customize such a tool using one Speakon connector on one end and a Binding Posts on the other end. Customization is very common with sound systems that are not catering to the corporate market.


Best Regards,

4


It's a fair point, Elliot. Actually, the board still has the binding post holes and traces and the back panel has the 4 holes in it. They are just covered over by the EU version sticker, so it would be fairly easy to add binding posts in addition to the Speakon sockets. I would have to do 4 amps for my project though...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Conanski Quote  Post ReplyReply Direct Link To This Post Posted: 09 March 2022 at 11:54pm
I think I see your point now, they put a dedicated Bridged connector on the thing and could have wired it any way they wanted, but instead of doing it it so a standard straight thru Speakon cable can be used they force you to build a custom.. which is pretty dumb.. completely defeats the point of having a dedicated connector. I would be possible to wire the bridged output to both pairs on the NL4 too, but that would be asking too much I bet. 

On my Yamaha amps both outputs appear on Ch1 speakon so a custom cable would be required to access bridged output, but I built a patch panel for the amp rack with connectors prewired to address this so I don't need a special cable or an adapter. 


Edited by Conanski - 09 March 2022 at 11:58pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 4D Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2022 at 1:52pm
Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by Lucasdude Lucasdude wrote:

Thanks for the replies, guys. I do like Speakons, but this sort of thing was much easier with the binding post version.
  The manual says pins 1+&2+ for bridged out, but looking at the board inside I can see that all 4 pins are soldered for that socket.

If it follows the same principal as the QSC EX 4000;

Single Speakon Socket Stereo Mode

1+ Positive Left Channel
1 - Negative Left Channel

2+ Positive Right Channel
2 - Negative Right Channel

Single Speakon Socket Bridged Mono

1+ Positive Left Channel
2+ Positive Right Channel



Best Regards,

EX4000 Methinks you will find the channel a & b outputs are each 1+/1- whereas single speakon socket use's 1+ & 2+ in bridge mode AND 1+/1- & 2+/2- when in in two channel mode 

As for the OP I would suggest unless your cable runs are over 25m then a single run of 4mm then link the cabs rather than 2 runs of 2 x 2.5mm 




Edited by 4D - 10 March 2022 at 1:53pm
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Elliot Thompson View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Elliot Thompson Quote  Post ReplyReply Direct Link To This Post Posted: 10 March 2022 at 3:21pm
Originally posted by 4D 4D wrote:

Originally posted by Elliot Thompson Elliot Thompson wrote:

Originally posted by Lucasdude Lucasdude wrote:

Thanks for the replies, guys. I do like Speakons, but this sort of thing was much easier with the binding post version.
  The manual says pins 1+&2+ for bridged out, but looking at the board inside I can see that all 4 pins are soldered for that socket.

If it follows the same principal as the QSC EX 4000;

Single Speakon Socket Stereo Mode

1+ Positive Left Channel
1 - Negative Left Channel

2+ Positive Right Channel
2 - Negative Right Channel

Single Speakon Socket Bridged Mono

1+ Positive Left Channel
2+ Positive Right Channel



Best Regards,

EX4000 Methinks you will find the channel a & b outputs are each 1+/1- whereas single speakon socket use's 1+ & 2+ in bridge mode AND 1+/1- & 2+/2- when in in two channel mode 

As for the OP I would suggest unless your cable runs are over 25m then a single run of 4mm then link the cabs rather than 2 runs of 2 x 2.5mm 



One of the reasons I said single socket. The QSC EX 4000 offers three Speakon sockets like the Crest CA 6. Both follow the same wiring configuration upon reading the CA 6 Manual. 

QSC was the first USA Amplifier manufacture to adapt Speakon on their top of the line series (EX) around 1987. That series was aimed directly to compete against Crown's Macro-tech Series which, dominated the USA touring market in the 1980's. The amount of money Crown made from the Macro-tech 2400... Ridiculous. 

Best Regards, 


Edited by Elliot Thompson - 10 March 2022 at 3:28pm
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