Stax electrostatics

For anything about cans, and the amplifiers that drive them
theoldtrout
User
Posts: 97
Joined: Thu Jan 07, 2010 9:44 pm
Contact:

Stax electrostatics

Post by theoldtrout » Wed Apr 27, 2011 10:52 pm

I found some Stax SR-3 headphones with the SRD-4 power source in my workshop; can't remember where I got them from or how long ago. I tried them this evening [after replacing two duff diodes in the PSU] Wow do these sound good! I've never tried electrostatic headphones before, the clarity is amazing - I'm a convert. These 'phones must be about 30 years old.

I was surprised to find that Stax are still in production but the prices - ouch!

User avatar
Paul Barker
No idea why I do this anymore
Posts: 6909
Joined: Mon May 21, 2007 9:42 pm

Post by Paul Barker » Wed Apr 27, 2011 11:34 pm

must be nice

User avatar
shane
Shed dweller
Posts: 2762
Joined: Sun Sep 16, 2007 12:09 pm
Location: Kept in a cool dry place.

Post by shane » Thu Apr 28, 2011 9:46 am

Very tasty. I've pondered the idea of building an amp for mine, because it just seems odd to use an output transformer to step down the output of a valve, only to step it back up again to drive the phones, but I don't have the knowledge or confidence yet. I think it might be a nice home for the QQVs one day.

User avatar
Ali Tait
Social outcast
Posts: 3405
Joined: Fri Jun 08, 2007 8:10 pm
Location: Dunfermline

Post by Ali Tait » Fri Apr 29, 2011 10:46 am

Perhaps that headphone amp Nick designed for Hi-Fi Collective could be used?

FredHS
User
Posts: 8
Joined: Fri Apr 29, 2011 10:36 am
Location: Planet earth, small solar system, small arm of the milky way galaxy

Post by FredHS » Fri Apr 29, 2011 11:27 am

Hi,

I've been very happy with my STAX Gamma "earspeakers" which I bought in the late 80s. The foam pads are crumbling into oblivion and replacement parts are no longer available, but the sound is still as clear and convincing as ever.

Since the STAX "passive adapter" is nothing to write home about, I built the "Kevin Gilmore all triode ac coupled amp" (google for this term, I am not permitted to post website addresses here), which I am very happy with.

All the best,

Fred

User avatar
pre65
Amstrad Tower of Power
Posts: 17141
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex

Post by pre65 » Fri Apr 29, 2011 11:36 am

Would this be the headphone amp you mentioned ?

http://gilmore2.chem.northwestern.edu/p ... re_prj.htm
People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from within
Dr Elisabeth Kubler-Ross

G-Popz THE easy listening connoisseur. (Philip)

FredHS
User
Posts: 8
Joined: Fri Apr 29, 2011 10:36 am
Location: Planet earth, small solar system, small arm of the milky way galaxy

Post by FredHS » Fri Apr 29, 2011 12:02 pm

Exactly... I appreciate you having posted the U R L (I'm not even permitted to use this three-letter word).

User avatar
pre65
Amstrad Tower of Power
Posts: 17141
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex

Post by pre65 » Fri Apr 29, 2011 12:05 pm

FredHS wrote:Exactly... I appreciate you having posted the U R L (I'm not even permitted to use this three-letter word).
You will, once you've posted a few more times.

It's just to stop neer-do-wells having a field day.
People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from within
Dr Elisabeth Kubler-Ross

G-Popz THE easy listening connoisseur. (Philip)

User avatar
Mike H
Amstrad Tower of Power
Posts: 17451
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

Post by Mike H » Fri Apr 29, 2011 8:13 pm

That's a phrase we don't hear very often nowadays :lol:


 
 
"The beer was so flat it could have been served in an envelope...."

User avatar
pre65
Amstrad Tower of Power
Posts: 17141
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex

Post by pre65 » Fri Apr 29, 2011 8:16 pm

Mike H wrote:That's a phrase we don't hear very often nowadays :lol:


 
It's my one man campaign to get more old and obscure words or phrases back into common use. :wink:
People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from within
Dr Elisabeth Kubler-Ross

G-Popz THE easy listening connoisseur. (Philip)

User avatar
Mike H
Amstrad Tower of Power
Posts: 17451
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

Post by Mike H » Fri Apr 29, 2011 8:38 pm

I should think so too. Image

Willy-nilly

 
 
"The beer was so flat it could have been served in an envelope...."

User avatar
pre65
Amstrad Tower of Power
Posts: 17141
Joined: Wed Aug 22, 2007 11:13 pm
Location: North Essex

Post by pre65 » Fri Apr 29, 2011 8:44 pm

Mike H wrote:I should think so too. Image

Willy-nilly

 
I went on a guided tour of Lincoln castle Easter Sunday, and the old girl who took us gave the origin of several well known phrases.

And also, when hangings were held in public, crowds of up to 20,000 (yes, twenty thousand) used to turn up. Seems one lady killed herself the night before she was due to be hanged, and there was a public riot the next day when they explained to the crowd what had happened. Hang someone else was the crowds response. :wink:
People are like stained-glass windows. They sparkle and shine when the sun is out, but when the darkness sets in, their true beauty is revealed only if there is a light from within
Dr Elisabeth Kubler-Ross

G-Popz THE easy listening connoisseur. (Philip)

User avatar
Mike H
Amstrad Tower of Power
Posts: 17451
Joined: Sat Oct 04, 2008 5:38 pm
Location: The Fens
Contact:

Post by Mike H » Fri Apr 29, 2011 8:53 pm

Flippin' 'eck Image

Knew how to enjoy a day out in them days didn't they


 
 
"The beer was so flat it could have been served in an envelope...."

Andrew
Eternally single
Posts: 4051
Joined: Thu May 24, 2007 2:18 pm

Re: Stax electrostatics

Post by Andrew » Fri Apr 29, 2011 9:21 pm

theoldtrout wrote:I found some Stax SR-3 headphones with the SRD-4 power source in my workshop; can't remember where I got them from or how long ago. I tried them this evening [after replacing two duff diodes in the PSU] Wow do these sound good! I've never tried electrostatic headphones before, the clarity is amazing - I'm a convert. These 'phones must be about 30 years old.
I bought a pair of Stax from Colin and I agree they are stunningly good! Well worth restoring.
Analogue, the lost world that lies between 0 and 1.

theoldtrout
User
Posts: 97
Joined: Thu Jan 07, 2010 9:44 pm
Contact:

Post by theoldtrout » Fri Apr 29, 2011 10:58 pm

The power unit for these headphones is very basic comprising of a voltage multiplier, a couple of transformers and not much else; a smaller version of what you get in electrostatic louspeakers. So ripe for a decent amp/power supply project - I don't have the time at present.

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest