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Old 24th June 2012, 12:40 PM   #1
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Default Headphones as an ultimate reference

Since headphones have fewer problems with distortion, or perhaps a different distortion profile, has anyone tried using headphones to listen to the distortion of a power amp using a jig of some sort to match level and impedance?

James
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Old 24th June 2012, 12:58 PM   #2
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Yes, about 8 ohms (6.8 ohms and 1 ohm resistor in series) as load resistance. parallel to the resistance of 1 Ohm the Headphone(300 ohm).

So I can hear more than over my speakers.
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Old 24th June 2012, 10:24 PM   #3
Telstar is offline Telstar  Italy
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Yes, phones like stax 007 are a good reference.
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Old 24th June 2012, 10:28 PM   #4
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Sure, I've done it plenty. A resistor bridge will work fine for level match, but of course is a much easier load for the amp to drive than a real speaker. That may or may not make a difference in what you are listening for.
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Old 24th June 2012, 10:36 PM   #5
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Of course you can, but people frequently misunderstand what a reference is. It can sound good or bad, as long as you understand exactly what it does so you can use it as an absolute comparison.
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Old 24th June 2012, 11:44 PM   #6
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Quote:
Originally Posted by jyoung070848 View Post
Since headphones have fewer problems with distortion, or perhaps a different distortion profile, has anyone tried using headphones to listen to the distortion of a power amp using a jig of some sort to match level and impedance?

James
Please see the latest post on the thread "Does anyone make their own headphones?". I have a bicycle helmet to which is bolted [symetrically] a pair of wideband loudspeaker [small] drivers. Make your own headphones with drivers that you believe are the best.
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Old 25th June 2012, 06:56 PM   #7
nowhere is offline nowhere  Israel
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Quote:
Originally Posted by Antoinel View Post
... I have a bicycle helmet to which is bolted [symetrically] a pair of wideband loudspeaker [small] drivers. Make your own headphones with drivers that you believe are the best.
Requirements for headphone transducers are quite different from requirements to transducers to be used in boxed speakers to be listened to in a room.
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Old 25th June 2012, 07:19 PM   #8
qusp is offline qusp  Australia
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… and they have very different requirements from an amp. I find it a bit strange that people on a diy site that would normally strive for good performance would use a simple resistive divider and expect accuracy. particularly when headphone amps can be such simple circuits with very few active components
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Old 25th June 2012, 07:44 PM   #9
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Requirements for headphone transducers are quite different from requirements to transducers to be used in boxed speakers to be listened to in a room.
I fully agree with you. Still; one common denominator between headphones and transducers must be the accurate and precise reproduction of music. How does a headphone maker determine it to be a Reference? I see the meaning of Reference in an Atomic Clock [cut and dry]; but not readily [hear it] with headphones or boxed speakers due to the subjectivity of music appreciation and interpretation; too many variables [and people] at play.
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Old 25th June 2012, 08:32 PM   #10
nowhere is offline nowhere  Israel
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Originally Posted by Antoinel View Post
I fully agree with you. Still; one common denominator between headphones and transducers must be the accurate and precise reproduction of music. How does a headphone maker determine it to be a Reference? I see the meaning of Reference in an Atomic Clock [cut and dry]; but not readily [hear it] with headphones or boxed speakers due to the subjectivity of music appreciation and interpretation; too many variables [and people] at play.
My point is that boxed loudspeakers work in a room - almost free space, while, say, in circumaural headphones the transducers work in a small cavity.

In order to produce constant as a function of frequency sound pressure transducers for headphones and transducers for speakers must be different.
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