Notebook Headphone Output Impedance
May 2, 2013 at 5:40 PM Thread Starter Post #1 of 11

CplNet

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Hello,
 
I have a ASUS K45A (Realtek HD Audio)..
 
 
I need to connect the headphone output into a crossover.
 
 
The crossover specifies:
Maximum Input Voltage: 4V RMS
Input Impedance: 10k OHMS
 
 
 
 
It's ok to connect it?
 
I'm asking because of the input high impedance rate (10kohms)
 
 
 
Thankz :wink:
 
May 2, 2013 at 5:46 PM Post #2 of 11

Chris J

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Quote:
Hello,
 
I have a ASUS K45A (Realtek HD Audio)..
 
 
I need to connect the headphone output into a crossover.
 
 
The crossover specifies:
Maximum Input Voltage: 4V RMS
Input Impedance: 10k OHMS
 
 
 
 
It's ok to connect it?
 
I'm asking because of the input high impedance rate (10kohms)
 
 
 
Thankz :wink:

 
Sure, no problem.
The headphone jack will have no problem driving a 10 kiloOhm load.
No worries, mate!  
wink_face.gif
  
 
I guess the sound card does not have a Line Out jack?
 
May 2, 2013 at 6:23 PM Post #3 of 11

CplNet

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No, there isn't a line out :frowning2:
 
 
But, just to understand..
 
 
10kohms is a high resistence, right?
Why it is easy to drive ?
 
 
 
What would be a safe resistence output range to laptop headphones output?
 
 
Thankz
 
May 2, 2013 at 6:47 PM Post #4 of 11

Chris J

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Quote:
No, there isn't a line out :frowning2:
 
 
But, just to understand..
 
 
10kohms is a high resistence, right?
Why it is easy to drive ?
 
 
 
What would be a safe resistence output range to laptop headphones output?
 
 
Thankz

 
Yes, 10 kOhms is a fairly high resistance.
It is easy to drive becasuse you are not asking the headphone jack to output much power.
I would guess the headphone jack would be OK for any load 30 or 40 Ohms or higher.
 
For example, it should not have any trouble if the crossover was 100 kOhms.
 
May 2, 2013 at 7:25 PM Post #6 of 11

Chris J

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Don't get too comfortable.
You are NOT safe from the coming Zombie Apocalypse!
Unless you have the necessary skills...............
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May 2, 2013 at 7:32 PM Post #8 of 11

Chris J

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There's a guy I work with who talks about this all the time.
Sometimes I wonder if he actually believes it!
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May 2, 2013 at 7:40 PM Post #9 of 11

tsandrew

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I think overall notebooks' headphone jacks are all right to drive almost anything... anything reasonable. Recently hooked up a pair of old-time boombox speakers to a newer laptop, no amp or anything. The sound card can drive those speakers to distortion.
 
May 2, 2013 at 10:30 PM Post #11 of 11

Chris J

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Quote:
I think overall notebooks' headphone jacks are all right to drive almost anything... anything reasonable. Recently hooked up a pair of old-time boombox speakers to a newer laptop, no amp or anything. The sound card can drive those speakers to distortion.

 
You're getting off topic:  what does this have to do with Zombies and the coming Apocalypse?
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