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Bijou All Tube Futterman Headphone Amplifier - Page 282

post #4216 of 4218
I deleted my post because Cavalliaudio dot com > Projects > Bijou has detailed build information.
Edited by bluemonkeyflyer - 8/24/16 at 10:28pm
post #4217 of 4218

Quote:

 

Originally Posted by funch View Post
 

The Bijou does not have the current output to properly drive the Audeze's. I tried an LCD-2 with a Bijou I used to have, and although it produced sound, it didn't really do the  job.

Are you sure this would be the case with Sine too? Comparing specs I see Sine needs less current than LCD-2 to be properly powered and also impedence of LCD-2 is 3x and more than Sine:

 

LCD-2

Style Open circumaural
Transducer type Planar magnetic
Magnetic structure Proprietary push-pull design
Magnet type Neodymium
Transducer size 106 mm
Maximum power handling 15W (for 200ms)
Sound pressure level >130dB with 15W
Frequency response 5Hz – 20kHz extended out to 50kHz
Total harmonic distortion <1% through entire frequency range
Impedance 70 ohms
Efficiency 101dB / 1mW
Optimal power requirement 1 – 4W

 

 

Sine

Style On-ear, closed-back
Transducer type Planar magnetic
Magnetic structure Single-sided Fluxor
Magnet type Neodymium
Diaphragm type Uniforce
Transducer size 80 x 70mm
Maximum power handling 6W
Maximum SPL >120dB
Frequency response 10Hz – 50kHz
Total harmonic distortion <1% full spectrum @ 100dB
Impedance 20 ohms
Optimal power requirement 500mW – 1W
Weight 230g

 

 

 

Quote:
Originally Posted by bluemonkeyflyer View Post

I deleted my post because Cavalliaudio dot com > Projects > Bijou has detailed build information.

Thank you, but Cavalli Audio web site has a problem at the moment, and almost all links to image are broken, so your post was really useful. I contacted Cavalli Audio and they said that they would fix the problem, but in the mean time your post was very useful I think.

post #4218 of 4218
Quote:
Originally Posted by giraz View Post
 

Are you sure this would be the case with Sine too? Comparing specs I see Sine needs less current than LCD-2 to be properly powered and also impedence of LCD-2 is 3x and more than Sine:

 

LCD-2

Style Open circumaural
Transducer type Planar magnetic
Magnetic structure Proprietary push-pull design
Magnet type Neodymium
Transducer size 106 mm
Maximum power handling 15W (for 200ms)
Sound pressure level >130dB with 15W
Frequency response 5Hz – 20kHz extended out to 50kHz
Total harmonic distortion <1% through entire frequency range
Impedance 70 ohms
Efficiency 101dB / 1mW
Optimal power requirement 1 – 4W

 

 

Sine

Style On-ear, closed-back
Transducer type Planar magnetic
Magnetic structure Single-sided Fluxor
Magnet type Neodymium
Diaphragm type Uniforce
Transducer size 80 x 70mm
Maximum power handling 6W
Maximum SPL >120dB
Frequency response 10Hz – 50kHz
Total harmonic distortion <1% full spectrum @ 100dB
Impedance 20 ohms
Optimal power requirement 500mW – 1W
Weight 230g

 

 

 

Thank you, but Cavalli Audio web site has a problem at the moment, and almost all links to image are broken, so your post was really useful. I contacted Cavalli Audio and they said that they would fix the problem, but in the mean time your post was very useful I think.

OK. I'm glad you were able to retrieve the copy/paste files before I deleted them. I did not try the Cavalli files to see if they would open. I saw them listed on Alex's website and assumed they were active...and then deleted my post.

 

Let me know if you need anything else.

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