Question about Fender 4 Channel Powered Mixer with 10 in Speakers System

Open Question

Need schematic for fender LTB type 345 - Fender 4 Channel Powered Mixer with 10 in Speakers System

Posted by on

1 Suggested Answer

  • 2 Answers

SOURCE: Fender LTB 4-channel PA gets distorted after use

1st
make sure your speaker total load impedance is not lower than 4 ohms.
Remember- if you have a pair of 8 ohm speakers plugged in your load will be 4ohms.
SO...if you add another speaker it will drop below 4ohms.
OR.. if you are not using the original 8ohm speakers, they must be combined to make a total impedance load of 4ohms or more using series or parallel combination in the hookup.

Also
the output transistor could be the cause. with the covers off, looking at the two power transistors mounted to the heat sink, one is probably bad. Part # DE9744 or the other one MJW21191. You should NEVER pull the covers off with the unit plugged into the wall unless you have at least SOME training in service work and you know what NOT to touch while the unit is plugged in.

If you are not sure what youre doing... Take it to a qualified service technician ! Deadly voltages are present and could KILL you if you are not carefull.

Another thing - never power up an amplifier without speakers plugged in. You might get away with it once but eventually it will take out the output transistor (s). Even if you know that an amplifier has overload protection, it is not a good habbit to get into.

That might have been the cause of the problem to begin with.Hope this helps.
"Enjoy music, for without music of all kinds, this life would be at a great loss"
10_28_2011_4_11_12_pm.gif

Posted on Oct 28, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

PSW 125 Diagram Schematic


download with model number suport e-manual pdf

Aug 28, 2014 | Polk Audio Psw 300-watt 12" Powered...

1 Answer

SCHEMATIC


Schematic diagrams are in PDF and cannot include here by this window. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience.
http://electronicshelponline.blogspot.com/

May 06, 2014 | Coby DVD938 Theater System

1 Answer

Need a schematic to tear down


While you did not specify what exactly you mean by tearing down, you can find schematics for the device as well as various instructions in the user manual:
Sony HT CT150 manual

Aug 05, 2013 | Sony HT-CT150 Theater System

1 Answer

Fender LTB 4-channel PA gets distorted after use


1st
make sure your speaker total load impedance is not lower than 4 ohms.
Remember- if you have a pair of 8 ohm speakers plugged in your load will be 4ohms.
SO...if you add another speaker it will drop below 4ohms.
OR.. if you are not using the original 8ohm speakers, they must be combined to make a total impedance load of 4ohms or more using series or parallel combination in the hookup.

Also
the output transistor could be the cause. with the covers off, looking at the two power transistors mounted to the heat sink, one is probably bad. Part # DE9744 or the other one MJW21191. You should NEVER pull the covers off with the unit plugged into the wall unless you have at least SOME training in service work and you know what NOT to touch while the unit is plugged in.

If you are not sure what youre doing... Take it to a qualified service technician ! Deadly voltages are present and could KILL you if you are not carefull.

Another thing - never power up an amplifier without speakers plugged in. You might get away with it once but eventually it will take out the output transistor (s). Even if you know that an amplifier has overload protection, it is not a good habbit to get into.

That might have been the cause of the problem to begin with.Hope this helps.
"Enjoy music, for without music of all kinds, this life would be at a great loss"
10_28_2011_4_11_12_pm.gif

Feb 09, 2010 | Fender 4 Channel Powered Mixer with 10 in...

1 Answer

Schemat denon dht500sd


type in dht500sd schematic u should get excellent results

Aug 08, 2009 | Denon DHT500SD System

1 Answer

Need service manual or schematic for SP PWA 10


http://www.fixya.com/support/p183860-jvc_th_a10_system/manual-17024/page-70

got there choose the right manuel for you i think you can download it you might need this software to read it www.adobe.com get adobe acrobat reader

Jan 18, 2008 | JVC TH-A10 System

Not finding what you are looking for?
Fender 4 Channel Powered Mixer with 10 in Speakers System Logo

Related Topics:

561 people viewed this question

Ask a Question

Usually answered in minutes!

Top Fender Audio Players & Recorders Experts

kakima

Level 3 Expert

98796 Answers

 Grubhead
Grubhead

Level 3 Expert

4678 Answers

The Knight
The Knight

Level 3 Expert

69767 Answers

Are you a Fender Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...