How Do You Know if Altec Lansing Speaker Battery Is Low

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Altec Lansing Rear speakers and subwoofer trouble.

• Thread starter khanvai
• Start date Jun 9, 2013

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• #1

I have a pair of Altec Lansing ACS56 front speakers and another pair of Altec Lansing ACS54 rear speakers and an ACS56 sub woofer. When I connect any of the rear speaker to the front left port on the sub the sound output is much higher than the original port (rear left or rear right port). I know that the 54s has less output capacity then 56. There are TDA7265 amplifier which controls the output of the speaker(one for rear and some other for front). And then if changing the port tin can give higher output I believe it is the woofer which needs to be worked on. As well, plugging in the left front to whatsoever of the rear speaker ports reduces the front left's output.

My question is how I tin increment the output of the amplifier?
I am totally a novice to electronics. Simply I call up if anybody can assistance I can work it out. Only requite me detail instructions. Cheers

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• #2

You lot are overloading the amplifier which might destroy it.
Each amplifier output is designed to bulldoze merely One speaker.
Yous cannot take more than output power than information technology was designed for.

• #three

You lot are overloading the amplifier which might destroy information technology.
Each amplifier output is designed to drive just 1 speaker.
You lot cannot take more output power than it was designed for.

Hi audioguru,

I am including a PDF file on TDA7265 specification. On the very showtime page you lot will see a diagram
which I believe actually shows that the amp is usable for two speakers. And this link

https://translate.google.com/transl...rhoney.idv.tw/Speakers/ACS56&biw=1920&bih=958

In which beneath the 10th picture it is written- "ACS56 using two ST's TDA7265. TDA7265 is a dual 25W ability crystals, there is the theoretical value equal to the maximum total output power of 100W satellite speakers" And then do you think Information technology is possible to do annihilation.

Co-ordinate to altec all of the speakers are full range, their amplifier should provide equal output.

I f it is impossible to exercise anything with the sub tin I exercise whatever shorts of adjustments like changing the mikes of the rear speakers? Delight propose. -Thanks

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• #four

I am not familiar with the ACS56 but it is possible that the TDA7265 is being used in a bridge configuration (run into Fig 17 of the datasheet), in which example it tin can bulldoze only one speaker.

• #5

I remember when Altec Lansing was a loftier quality American company. Now they are Taiwanese making picayune pc speakers?

Those dinky little 3" satellite speakers are probably made for 5W or 10W each, non 35W.
The fiddling 6.v" woofer is not a sub-woofer and it might be built for 20W or 30W, not 35W.

The amplifiers in the TDA7265 "crystals" (bad translation) clip at 18W into four ohms or 8 ohms when the supply voltage is very high but hither the supply voltage is probably adequately low. Maybe the TDA7294 is bridged with a low supply voltage for 25W or 35W to the woofer.

Overloading the amplifiers probably causes the supply voltage to drib which reduces the power in the speakers and might destroy the power supply.

• #six

Howdy guys,

And so I am back again. I have taken some pictures of my sub's excursion board. Surprising plenty in that location are merely three amps. One TDA7284 (which is for the sub I recall) and another two TDA7265s for the four speakers(each for each speaker pair).

Only according to all of you information technology should be 1 amp for i speaker right? But I don't know what is actually happening here. There suppose to be half-dozen amps ( if I am not incorrect ), now whats going on?
The sfx volume was scanned with KIS 2013 and then don't worry about it.

Thanks.

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• #7

Why don't you expect at the datasheet of the TDA7265? It is a STEREO amp IC (stereo ways Ii channels).
So 2 ICs are used for the 4 front end and back satellite speakers and i IC has its ii channels bridged for lots of power to the sub-woofer.

I will never open a huge EXE file. Why don't you lot post the images like everybody else?

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• 

• #8

You lot are overloading the amplifier which might destroy it.
Each amplifier output is designed to drive but ONE speaker.
You lot cannot have more output power than it was designed for.

Why don't yous look at the datasheet of the TDA7265? It is a STEREO amp IC (stereo means TWO channels).
So two ICs are used for the four front and back satellite speakers and 1 IC has its two channels bridged for lots of power to the sub-woofer.

I volition never open a huge EXE file. Why don't you post the images similar everybody else?

audioguru,

I have mentioned that I am a novice in electronics. And I mean it. I cannot even read the "Due east" of "Electronics". So all of this questions that I ask might bother experts similar y'all. In your first respond you lot said "Each amplifier output is designed to bulldoze only ONE speaker."

Am I missing anything?

In the last respond you wrote "So two ICs are used for the four front and dorsum satellite speakers". So each TDA7265 is for two speakers (front or rear or whatever).

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• #9

The woofer is driven from a bridged TDA7294, not a TDA7284.

• #10

In your commencement answer you said "Each amplifier output is designed to drive only ONE speaker."

Am I missing anything?

Look back at the zipper AG has in mail service #7 and look at the section on the left, for stereo output.
How many inputs/outputs are there?

In the last answer you wrote "Then two ICs are used for the four forepart and back satellite speakers". So each TDA7265 is for two speakers (front or rear or whatever).

1 amp for the front pair, some other amp for the rear pair, then another bridged for the woofer.

What yous seem to have missed, is this part:
"Each amplifier output is designed to drive only One speaker."

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