Question about Altec Lansing ATP 3W Computer Speakers

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My kids broke the copper pins on my lansing right speaker wire that goes into the sub woofer is there a way to put them back ?

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Where can I buy another one

Posted on Feb 26, 2013

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Then buy another one

Posted on Dec 28, 2008

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Is there a way to use the Altec Lansing VS4121 Subwoofer as a stand alone?


Normally these low end systems components that depend on each other and cannot be interchangeable from other system. So if one of the components (sub woofer or right control satellite speaker) breaks or gets lost the whole system is unusable...
I was in the same situation. Got a sub woofer from VS4121 without original satellite speakers. I acquired satellite speakers from Altec Lansing 251 which used same connectors but the internal wiring was different and incompatible out of the box. Speakers are also glued together so it is impossible to open without damaging it. Not to mention there is no service documentation anywhere..
But if you like electronics you can try to make something based on the information bellow:
Altec Lansing VS4121 connector pinout
If you take the male connector (from right satellite speaker) and look at the pins and number them first row from left to right pins 1-3, second row pins 4-7, the bottom row pins 8-9 and the circle enclosure as 0
0 - Ground
1 - Speaker Right
2 - Treble (seems just like voltage control but may need to be confirmed: Min=0V; Max=voltage from Volume control Pin 9)
3 - Head Set Right
4 - Bass signal (not sure what the exact original design is as I have not opened the speaker) But seems like they use 50K potentiometer and some sort of RC low pass filter configuration. When potentiometer is set to Min it is shorted with ground. When set to Max it is taking signal from Right and Left Head Set (pins 3 and 5) combined through some larger resistors and low pass filter.
5 - Head Set Left
6 - Ground for Head set (grounds 0 and 6 seems to be connected in the subwofer but within the right satelite speaker they seem to be isolated with separate leads to sub)
7 - Power ON/OFF. When OFF or head set jack plugged = 0V; When ON and head set jack unplugged = 5V
8 - 5V Power in
9 - Volume (min=0V; max=5V). It seems they use 50K potentiometer but probably anything >10k should work.
At minimum for standalone sub woofer you will need to implement:
- Power On.Off (switch between pins 8,7)
- Volume control (50k potentiometer (probably anything beteen 10k and 50k will do)between pin 7 and 0 with variable output to pin 9
- Bass control - join two resistors R (I used 7k) and lets call this join point A. Attach other ends of the resistors to pins 3 and 5 respectively. Attach 50k potentiometer (I used 10k) between point A and ground 0. Attach Variable pin of the potentiometer to pin 4 (Bass input signal). Attach capacitor C between Pin 4 and Ground pin 0 (I used Electrolytic 1uF with negative end to ground) . Resistor R and capacitor C should make simple passive low pass filter (Google for formula) that should bypass anf frequency higher than 80-120Hz to ground and feed frequencies lower than 80-120Hz to pin 4.
PS: I managed to hack 251 control satellite speaker to somewhat work with VS 4121 Subwoofer but that is another subject. All electronic parts were salvaged from old broken TV so total cost was $0 but took several days of tinkering for speakers that I could buy used for $10-20 :)

Jun 25, 2012 | Altec Lansing VS4121 Speaker

1 Answer

I hav altec lansing vs2621, some times sub woofer not working. left and right speakers ok.


Hello
Check its speaker. In subwoofers, the lead wire that goes to the voice coil; goes from the speaker solder terminal to the vocie coil will get internal break and this type of fault sill occur. Intermittent working of speaker will be the result. Lead wire can be replaced. It can be bought from the electronic spare part shops. It is a type of copper braid wire. If you have the skill, fid out which wire is faulty and replace the same. you have to take out the speaker out of the box for repair. Broken wire can be detected by measuring its resistance with a multimeter. OK.

Jun 20, 2011 | Altec Lansing VS2621 Speakers

1 Answer

Ah i have altec lansing acs 45.1.the problem is i dont know how to wiring.can u pls help me.ynx


ok first plug run a1/8 two sided head phone jack[male] from the computer to sub woofer you should have two imput jacks makes no differance ok the left sat speaker has a 6 pin din plug round looking plug insert into subwoofer and then plugac cord in the wall you should be good togo "note right sat speaker is attached to the left good luck

Nov 16, 2010 | Altec Lansing ACS 45.1 Computer Speakers

1 Answer

My altec lansing mx5021 speakers problem


The problem I have found is the contact glue between the back panel and circuit board inside the sub woofer. The glue becomes conductive after some time (2 years..!!) and needs to be scraped away from across tracks, you can tell the problem areas as the glue is pale yellow but goes brown and conductive over time. Good luck.
Regards
aj

Feb 18, 2010 | Altec Lansing MX5021 Computer Speakers

1 Answer

VS2521


I found that one of the pins of the plug connecting the sub-woofer was bent and the plug was not seating properly deep in to the slot. Every pin has a specific task to the sound system, it seems. I set right the bent pin with a long needle gently and re- plugged in to the woofer's slot. After that every thing works amazingly. All it requires is patience and application of mind for a while exclusively focused on the problem.
Thanks and regards
M. Narayanan

Jan 15, 2010 | Altec Lansing Audio Players & Recorders

1 Answer

Short in subwoofer wire - Altec Lansing computer speakers & sub


yes, you can splice the cables and put on a new connector, goto radio shack with the old connector and im sure they will have one you can splice right onto it. ive done this many times with varios equipment "headphones speakers etc" it may take a couple of tries to get the wiring right but if its just one speaker there will most likely be just 2 wires, if you wire it up and it doesnt quite sound right, wire it the other way. speakers will work wired backwards but wont sound quit right so if it doesnt, rewire it and it should. good luck and i hope this helps!

Jan 15, 2010 | Altec Lansing ADA 885 Computer Speakers

1 Answer

How to connect


Check the wires.
One wire should end with a thin green pin.
Connect the green pin to the green socket on your computer.
If there is a black pin, you have a sub-woofer, and the black pin
connects to the black socket on one of the speakers.
Connect the wire with the 2-prong silver plug to AC power, e.g., to a power-bar.

Test the speakers.

Nov 25, 2009 | Altec Lansing XA2021 Computer Speakers

1 Answer

Altec lansing AVS 500 IC


The amps are 8-pin CHN 4558CN [K1D142] and 8-pin PHIL TDA8199 [LD8136] The Voltage Regulator is a 14-pin LM324N There is a 3-pin LM7812CN 12-volt regulator... They are in the sub-woofer housing which is held in place by tape so it can be pried off if done with care. Hope this helps. If you have all the cables and wires in place I would appreciate knowing the connection sequences (someone cut all the wiring to the set I have.)

Jan 22, 2009 | Altec Lansing 621 Computer Speakers

3 Answers

Need wiring and 9pin connector diagram


Dell (Altec Lansing) A425 Subwoofer Pinouts

This is a standard female DB-9 serial port.
Here are the pinouts.

Pin 1 = Left Speaker Out +

Pin 2 = Left Speaker Out - (Common Ground)

Pin 3 = Left Line In +

Pin 4 = Right Line In +

Pin 5 = Left/Right line In - (Common Ground)

Pin 6 = Right Speaker Out +

Pin 7 = Right Speaker Out - (Common Ground)

Pin 8 = Power A

Pin 9 = Power B

Jumper (short) Power A to B to turn on.
If you want a volume control you need to put one on the inputs. You will buy buy a stereo volume control or potentiometer.
Here is some info on how to do this.
http://g4tv.com/screensavers/features/43665/Pump-Up-The-Volume.html

Cheers!

Mar 27, 2008 | Altec Lansing ADA425 3-piece 30-watt...

2 Answers

Wiring diagram for Altec Lansing Vs4221 Right Speaker Wire


red-positive . blue-negative and if another colour mostly brown-Earth.

Jan 15, 2008 | Altec Lansing VS4121 2.1 Channel Powered...

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