What happens when one plugs computer speakers into the headphone port of an integrated amp?
Aug 23, 2014 at 7:00 AM Thread Starter Post #1 of 5

jonathanjong

Headphoneus Supremus
Joined
Aug 4, 2008
Posts
4,041
Likes
12
Someone asked me this the other day, and I had no idea. I don't suppose the built-in amp in the speakers get by-passed, so is there just redundancy? Will the speakers get over-powered and, thus, wrecked in some way?
 
Aug 23, 2014 at 8:44 AM Post #2 of 5
Nothing get bypassed. You are just double amping the speaker basically.
 
Aug 23, 2014 at 8:32 PM Post #3 of 5
Someone asked me this the other day, and I had no idea. I don't suppose the built-in amp in the speakers get by-passed, so is there just redundancy? Will the speakers get over-powered and, thus, wrecked in some way?

 
It depends on the circuit. It either goes through the speaker amp circuit then goes into a headphone output circuit that helps adjust the impedance for a headphone, which when used with a speaker tends to be way off what speakers need (in some cases the output impedance is adjusted to 120ohms on older receivers, which is why some of them just suck with Grados while they have no immediately audible issues on 300ohm+ headphones). In some cases I think it has some kind of dedicated headphone driver circuit, which likely isn't enough to power the speaker still.
 
Aug 23, 2014 at 9:19 PM Post #4 of 5
Nothing will be bypassed. Nothing will be over or under-powered either. The integrated amp or whatever is driving the headphone output cannot deliver any significant power to the input of the speaker's built in amp. The high impedance of the speaker amp's input means that it draws very little current, so practically no power is delivered to it. The built in amp supplies it's own current/power to the speakers. The it will work just as it would if you connected it before the first amp, you will just lose some quality by sending an analog signal through another amplifier circuit unnecessarily.
 

Users who are viewing this thread

Back
Top