Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 18 replies
  • Subscribers 32 subscribers
  • Views 1774 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Audio Public Address Sound System.

Zoomup
Mornin' All,

                    I need some advice please.


Imagine a portable sound system as used by travelling musicians, rock guitarists or others with electric instruments. There will be a large mixing desk, and amplifier and speakers. All is well if the musicians with electric instruments only plug their 1/4 inch jack plugs into their instruments when the mixer sliders are down (off) so as not to cause a big pop or bang through the speakers. Sometimes though the jack plugs are unplugged from the instruments when the mixer sliders are up (on) and a terrible sound results from the speakers.


Is there a "magic box" that can be inserted in line with the audio leads from the instruments to the mixer that AUTOMATICALLY prevents this unwanted loud noise problem?


Thanks,


Z.
Parents
  • 0

    Zoomup:




    Legh Richardson:

    Why not make a 2 into 1 jack socket with a jack output, a double pole change over switch, with supressing capacitors


    Legh




    I did try to parallel the output from the violin's transducer/pre-amp.  with one connection to my combo amplifier and the other to the main mixing desk, but the signal must have been too weak for the mixing desk as nothing came out of the main speakers. After just plugging into the main mixing desk only all was good. I though that all audio inputs were very high impedance and only a very small audio signal is required.


    Z.


     




    The mixer requires a particular impedance on each channel to work optimally.  If you just try to split the signal, you will experience a reduction in volume.  There are special adapters available to split an instrument signal to two mixers/signal inputs.  You need to be careful when using phantom power on both mixers as damage could occur.


    If your combo amplifier is used for monitoring purposes, you can use the feedthrough socket on a DI box.  The main balanced output would go to the mixing desk.

Reply
  • 0

    Zoomup:




    Legh Richardson:

    Why not make a 2 into 1 jack socket with a jack output, a double pole change over switch, with supressing capacitors


    Legh




    I did try to parallel the output from the violin's transducer/pre-amp.  with one connection to my combo amplifier and the other to the main mixing desk, but the signal must have been too weak for the mixing desk as nothing came out of the main speakers. After just plugging into the main mixing desk only all was good. I though that all audio inputs were very high impedance and only a very small audio signal is required.


    Z.


     




    The mixer requires a particular impedance on each channel to work optimally.  If you just try to split the signal, you will experience a reduction in volume.  There are special adapters available to split an instrument signal to two mixers/signal inputs.  You need to be careful when using phantom power on both mixers as damage could occur.


    If your combo amplifier is used for monitoring purposes, you can use the feedthrough socket on a DI box.  The main balanced output would go to the mixing desk.

Children
No Data

Community Rules & Guidelines