The Tube CAD Journal, Electrostatic Headphones

From: "Saved by Internet Explorer 11" Subject: The Tube CAD Journal, Electrostatic Headphones Date: Wed, 8 Apr 2015 11:46:56 -0700 MIME-Version: 1.0 Content-Type: multipart/related; type="text/html"; boundary="----=_NextPart_000_0094_01D071F1.B72819E0" X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7601.17609 This is a multi-part message in MIME format. ------=_NextPart_000_0094_01D071F1.B72819E0 Content-Type: text/html; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable Content-Location: http://www.tubecad.com/november99/page2.html =20 =20 =20 =20 =20 The Tube CAD Journal, Electrostatic Headphones =20 =20

= =20 =20


	Circulation: =20


	Since=20 3/23/99

35082 =20

Electrostatic Headphone
Tube=20 Amplifiers

This=20 Issue

First of all, I apologize for the = tardiness of this=20 issue. Almost two weeks of bronchitis slowed me down quite a = bit.
I have been meaning to write about my = OTL=20 electrostatic headphone amplifier for over a decade, but I = suppose I=20 have preferred just listening to it. This amplifier and a = pair of=20 Stax Lambda Pros can ferret out more nuance than any speaker = I have=20 ever heard. And yes, I have heard plenty.
Our = first book=20 review begins with Bruce Rozenblit's fine effort: = Audio Reality: Myths Debunked...Truths=20 Revealed. If you=20 know of a book that should be better known, drop us a line = with its=20 title.
The unsinkable Circular / Balanced = amplifier=20 appears once again in the e-mail section. Here I have given = a=20 general purpose answer to a few hot e-mails.
= Remember, if=20 you have a request or suggestion of your own for either an = article=20 topic or circuit, please e-mail:

Editor
=20


	Electrostatic headphones excel. They = reveal=20 information from a recording that no speaker can reproduce, = at least=20 that I have ever heard. You hear a hiss appear in the music = and then=20 a saxophone plays a few bars, then the saxophone stops and = with it=20 the hiss. Until the hiss returns, you know you will not be = hearing=20 from the saxophone. Overdubs, bad cuttings, breathing, floor = creaking, finger prints across guitar strings, car noise = from=20 outside, George Harrison's guitar flubs, Alfred Brendel's = humming,=20 page turnings--all can be heard. But along with the bad, the = good=20 shines through. The greatness which was Ella Fitzgerald's = voice is=20 made obvious. Many recordings that you thought were = overloaded turn=20 out not to be. It is just that your amplifiers and speakers = cannot=20 reproduce so huge a dynamic range. No crossovers, no = room=20 acoustics, just the thinnest piece of plastic film moving in = response to varying electrostatic fields. = If=20 electrostatic headphones are so wonderful, why are they so = rare? Two=20 reasons: expense and step-up devices. Quality electrostatic=20 headphones from Sennheiser and Stax can cost up to $7000. = Even=20 budgets models go for several hundred dollars. Part of the = expensive=20 comes from the difficulty of making the film transducer. I=20 understand that the more expensive models use handmade=20 diaphragms that require many laborious tries in = the=20 making. In addition, the headphones require a polarizing = high=20 voltage and a step-up transformer or a high voltage = amplifier, all=20 of which must be housed in an attractive, i.e. expensive = box.=20

In This=20 Issue


	1 9 17 23 =


	Electrostatic headphones = Amplifiers Book=20 Review: Audio=20 Reality E-mail:=20 Class A Vs Advertising, again Publishing=20 Information Glossary=20 of Audio Terms


	www.tubecad.com Copyright =A9 1999 = GlassWare. All=20 Rights Reserved


	NEXT = >=

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