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Sennheiser HE-1


spritzer

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The polarising voltage is 650V, so close to Stax's 580V.

Specifications

HE-1 - Headphones
Sennheiser_He_1_inpage_1.pngTransduscer Principal - Electrostatic, Push Pull Princpal
Acoustic operating prinicipal - open
Ear coupling - circum-aural
Contact Pressure - 4.3N
Frequency Characteristic - Diffuse field equalised
Frequency repsonse - 8 - 80,000 Hz (-3dB)
Max sound pressure level - 114 dB
THD < 0.01 % (1KHz, 100 dB SPL)
Connection cable - silver platted , O2 free copper cable (OFC) balanced, shielded 3m
Connector - 9 pin HV connector
Operating Voltage - 780 V DC
Polarization Voltage - 650 V
Max Input - 20 dBV
Weight (without cable) - approx 550 g

HE 1 - Headphone Amplifier 
HVE 1 tube headohone amplifier
Max outputlevel - 20 dBV
Frequency response - 5 - 110,000 Hz (-3dB)
THD - typ 0.01 %
Inputs -
Analogue Balance XLR-3
Analogue Unbalanced - RCA
Digital USB - USB Type B
Digital Opt - Toslink
Digital Coax - RCA
Outputs-
9 pin HV socket for separate HEADPHONE 2 storage
Analog BAL : XLR-3
Analog UNBAL: RCA
Weight : 21Kgs

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  • 2 months later...

I have been into Stax for about a year or so, and I already feel that Stax is ahead of it time.  I am thinking that even Sennheiser is behind, but Sennheiser is in a much better shape to keep pulling onto their ultra-flagship lines to release Orpheus He-1.  Unlike Stax, after reading much into it history, and legendary T2+Omega, I feel so sad, and not sure if Stax will continue on being the same ? I know the latest T8000 was just “cold”

*found more info on the 009*.

  It is awesome 

Edited by Whitigir
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11 minutes ago, spritzer said:

Stax have never said what the diaphragm is but they might have moved away from mylar.  Plenty of new materials to play with these days...

They did say in general that

New high polymer ultra-thin film material called the super engineering plastics

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  • 3 weeks later...

Stax over Senn for sure, despite the gold ceramic electrodes

On 3/13/2018 at 3:46 PM, Whitigir said:

I have been into Stax for about a year or so, and I already feel that Stax is ahead of it time.  I am thinking that even Sennheiser is behind, but Sennheiser is in a much better shape to keep pulling onto their ultra-flagship lines to release Orpheus He-1.  Unlike Stax, after reading much into it history, and legendary T2+Omega, I feel so sad, and not sure if Stax will continue on being the same ? I know the latest T8000 was just “cold”

*found more info on the 009*.

  It is awesome 

 

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  • 4 weeks later...

This has always confused me because in KG's original KGSS Headwize article he said that he wanted the best amplification for the then new SR-007 but didn't want to pay the money for an SRM-717 - which implies that the 717 preceded the KGSS.

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Well they aren't identical as Stax did fuck with it a little bit but if you look at the schematic it is easy to see where it came from.  There is also a much bigger part of this story which involves some people appropriating this circuit as their own that I'm not going into. 

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