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One speaker on this public address system won't work how do i test it

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  • David Dunn
    David Dunn May 11, 2010

    What PA are we talking about? How many speakers? What works?

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  • 92 Answers

Take a nine volt battery and touch it to the speaker wire ends where it gos into the amp,if thers a good connection the speaker will crackle,if not your speaker is probly blown

Posted on May 20, 2009

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Uniden 520xl won't turn on. Hooked up correct and tested cont. but still won't work?


Is your CB/PA Switch set to CB? It's common for folks to forget to make sure the switch is set for CB and not PA (Public Address Loud speaker Function).

Feb 19, 2014 | Uniden Radio Communications

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I have a Bose TV speaker, it won't work, the power light is red and when I turn it on its orange


you must test the output with another speaker and see if work or NOT. if work you must know the speaker is faulty. If not work, you must see the Unit can be faulty circuit sound. God bless you

Apr 04, 2013 | Bose Solo TV sound system - Black

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How can i avoid loud annoying feedback?


don't point directional microphones at the speakers, generally keep onstage levels down, and use an equalizer to avoid gain at the frequency where the feedback is occurring

Jan 29, 2013 | Audio Players & Recorders

3 Answers

What causes feedback in my PA system?


Feedback happens when the sound coming out of the speakers travels back into the microphone and then is re amplified and sent back through the speakers

Jan 29, 2013 | Audio Players & Recorders

1 Answer

I would like to connect a microphone to my "Optimizer Mic" plug to incorporate a public address system in sound system. How can I do it?


Nope. Plugging in a mic into the optimizer selects a calibration tone source for the speaker outputs.

May 12, 2011 | Audio Players & Recorders

1 Answer

I'm looking for a wiring diagram for dukane speaker transformer


This is a 2-watt line-to-voice coil matching transformer used in 25- or 70-volt public address ampliier systems. (I only saw your question recently.) Take a look here:

http://www.epanorama.rackhost.net/schematicsforfree/Audio/Products/PA/Dukane_710-3085_Transformer_Hook-ups.pdf

May 15, 2009 | Alpine Car Audio & Video

1 Answer

RCA Modem DCM315R


Just a bit of explanation. E0 interface is for inside network (LAN interface). E1 is for outside (ISP or WAN physical interface). Dialer1 is for PPPoE (the "actual"/logical WAN interface). The 1.0.0.13 is ISP provided static IP address for the use of the server. This configuration example is for running FTP server, which uses the standard TCP port 20 and 21.

The LAN uses 10.10.10.0 network with 255.255.255.0 subnet for both servers and workstations. All servers within the LAN use static IP address. The router is configured as DHCP server to give out IP info (IP addresses, subnet mask, DNS) to workstations that are configured as DHCP client.

Basically I suggest that you deploy NAT (Network Address Translation) and PAT (Port Address Translation) to setup your own servers behind Cisco router. The NAT is used to translate the ISP's given static IP address to your local IP address. The PAT is used to translate TCP ports (the port 20 and 21) between the two IP addresses.

When using NAT/PAT, keep in mind that the Internet-accessible servers are seen from the Internet as their NAT/PAT-ed IP address (the Public IP address) and not the local IP address (not the Private IP address). This understanding is very important when you or someone need to test connectivity to the server and/or when you need to create filter (access list or ACL for short) to allow only certain incoming traffic from the Internet and block others.

Side Note:
For more info on NAT/PAT concept, check out the following FAQ
»Cisco Forum FAQ »NAT and PAT; Introduction and Implementations

Instruments used in this illustration are pretty much standard for running your own servers. Please note that IP addresses, username, and password are changed. However, you could always modify the configuration to suit your situation.

This sample configuration assumes that you have a block of IP from ISP. There is a dedicated Public IP address for the router WAN interface (the Dialer1 interface) and another dedicated Public IP address for the server PAT IP address. If you only have a single Public IP address for both router WAN interface and server PAT IP address, there are several ways to configure the router.

One way is to use the same command as shown in sample configuration.

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  1. ip nat source static tcp 10.10.10.2 21 1.1.1.14 21 extendable
ip nat source static tcp 10.10.10.2 21 1.1.1.14 21 extendable
This one configuration way is suitable when you have static IP address from your ISP and you know exactly what the IP address is. In this case you have the 1.1.1.14 single static IP address for both the WAN interface and Public server IP address.

When you are unsure which IP address you receive from the ISP, or when your Public IP address keep changing; then another way to configure the static PAT is following

view plaincopy to clipboardprint?
  1. ip nat source static tcp 10.10.10.2 21 interface Dialer1 21 extendable
ip nat source static tcp 10.10.10.2 21 interface Dialer1 21 extendable
With situation of dynamic IP address, at some point you still need to know the exact Public IP address you receive from your ISP for server connection testing and production time. To find out, you can issue show ip interface brief command on the router. You will then see the associated WAN interface Public IP address.

Feb 25, 2008 | RCA Cable Modem DCM315R (11603540)

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