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Everything posted by spritzer
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Most of my truly WTF headphones have been dirt cheap so I just viewed them as a learning experience. Glad the ESP9's are working as they should. Not bad at all but one could argue that the Stax sets of the same vintage are better. Certainly more comfortable. Something for this thread though, as most know the new Orpheus had a name change last month (HE1060 to HE1) but what Sennheiser kept to them selves is an embargo on actually calling them "Orpheus". They are not meant to be called that in any official publication or by Senn representatives. Not sure what is going on there but this is a complete change from the earlier days. Ohh and me having this info has nothing to do with me asking how much a set would cost me...
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I've lost count of how many basket cases I've received over the years. Buying vintage is a huge risk but so many people don't want to face that.
- 176 replies
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Dynamic to Electrostatic Headphone Converter
spritzer replied to astrostar59's topic in Headphone Amplification
Considered but found impossible in this universe. -
Dynamic to Electrostatic Headphone Converter
spritzer replied to astrostar59's topic in Headphone Amplification
My point is that it might be an ok amp but it's very expensive and it is the master of nothing. Too the point though, I've been asked to marry a Carbon and a PureBipolar in the same chassis so that is something to consider. Could be fun... -
That's it, it's all about the different temperature rating. RN60D should be rated at 1/4W as this is mil-spec and made by a lot of companies (well used to at least).
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I'd replace the foam too even though these have a reduced backwave from memory.
- 176 replies
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Dynamic to Electrostatic Headphone Converter
spritzer replied to astrostar59's topic in Headphone Amplification
Well the Malvalve doesn't really fall under this as it takes the electrostatic output directly from the plates. Dynamics are then driven through the transformers. This dates back to the 50's so nothing new there. I'm a bit surprised nobody has done it before as this is a really, really cheap way of doing electrostatic output. All you need is some relays and caps. My main issue here is that the 6V6 is absolutely dreadful for this role. Seriously, they couldn't have picked a worse tube for this. Roughly 300V max rating so yeah... -
Dynamic to Electrostatic Headphone Converter
spritzer replied to astrostar59's topic in Headphone Amplification
I did a few in the past but transformers will always have huge problems. -
Chokes in the PSU vs. proper regulation? Well then chokes are just stupid. Reminds me of an email I was sent where Lampazitor was defending his crappy power supplies because people liked them at some meet. No actual testing, just "we liked the sound". Goes to show what shitty crap that stuff is.
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...and this proves nothing at all.
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Nope, I even asked Jack if it was working correctly and he looked at me with a puzzled look and said "this is the upgraded version". Yeah....
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It is...
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Have fun restoring them and be careful with the energizer. No bridged amps and it is the definition of a rats nest...
- 176 replies
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That's exactly it and why the reactive load plus a choke is such an utter clusterfuck. I mean seriously, everybody has to listen to the Woo WES at least once to bask in it's awfulness.
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1/4W resistors are not ok and the RN60D resistors are actually CMF60 units which are rated at 500V. Read the datasheets properly.
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Chokes and electrostatics are a very bad idea. Just look at the piece of shit that is the Woo WES.
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The whole easy to drive is a bit of a loaded statement as while something works, it doesn't mean you can't do it better by adding some headroom to the design. Also grounded cathode is the bog standard of all bog standard designs so no copying here.
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350V is the absolute minimum.
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That's the feedback I've been getting, like a mediocre Lambda. Did you try the Mr. Speakers prototype?
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http://www.moon-audio.com/sennheiser-headphone-chassis-mount-connector-he90.html
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The ESP9 headband also works a treat with these. Gotta love anything that has nails in it though...
- 176 replies
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Indeed... The whole "getting used to something" doesn't really hold any water for me. Sure you can be fooled for a while (hello HE90!!) but it doesn't last for long. Also stating that the 009 works well with the BH is no surprise, it rolls off after 10kHz....
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That might not be enough if the plastic latch inside the switch is damaged. Should be easy enough to replace the switch if needed though.
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I'm still not happy about missing out on dinner with him... ahh well there is always next time.
- 176 replies
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It was Larry's set and that is indeed Larry in the video.
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