Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems.

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mike
 
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Default On/off switch for one small stereo speaker - good idea?

Lars wrote:
Can you specialists me advise please. I want to be able to switch a
small speaker on and off.

The speaker is attached to a small stereo (approx 15W + 15W) which
has one speaker in the kitchen and one in the hallway.

Is it ok to simply put a switch in the speaker lead? I am concerned
about two things with this approach:

(a) The on/off action may cause transients which may damage the
amplifier.

(b) The lack of any load on one channel may cause the amplifier to
have a shorter life than otherwise.



Any advice gratefully received. Thank you.


most amplifiers have switches for two sets of speakers that do just that.


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Watson A.Name - \Watt Sun, the Dark Remover\
 
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"Lars" wrote in message
...
Can you specialists me advise please. I want to be able to switch a
small speaker on and off.

The speaker is attached to a small stereo (approx 15W + 15W) which
has one speaker in the kitchen and one in the hallway.

Is it ok to simply put a switch in the speaker lead? I am concerned
about two things with this approach:

(a) The on/off action may cause transients which may damage the
amplifier.

(b) The lack of any load on one channel may cause the amplifier to
have a shorter life than otherwise.


Any advice gratefully received. Thank you.


Lack of load shouldn't hurt a modern solid state amplifier. But if
you're concerned, switch a load of a 20 to 30 ohm, 10 watt resistor in
place of the speaker.


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NSM
 
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"Lars" wrote in message
...
| Can you specialists me advise please. I want to be able to switch a
| small speaker on and off.
|
| The speaker is attached to a small stereo (approx 15W + 15W) which
| has one speaker in the kitchen and one in the hallway.
|
| Is it ok to simply put a switch in the speaker lead? I am concerned
| about two things with this approach:
|
| (a) The on/off action may cause transients which may damage the
| amplifier.

Only with a tube amplifier.

| (b) The lack of any load on one channel may cause the amplifier to
| have a shorter life than otherwise.

Only with a tube amplifier.

| Any advice gratefully received. Thank you.

You could also put a 50 ohm pot in series.

N


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