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Topic: Tube sound

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	Tuner Information Center - Tube Tuners
		Selectivity was typical for a tube unit, meaning forget about adjacents to strong stations without a rotating antenna, but alternate stations to strong ones were possible with care in tuning.
		The RandS combo sounded somewhat tilted in the upper frequencies.
		There could be a difference in the sound quality of the LT-110 vs. the 350-D due to the considerable differences in the multiplex circuits the two tuners use, but as I said I have no experience with the 350-D so I don't know one way or the other.
	www.fmtunerinfo.com /tubetuners.html (4217 words)

	Valve sound - Wikipedia, the free encyclopedia
		Some audiophiles argue that the sound from valve amplifiers to be "richer" or "warmer" than the sound from transistor amplifiers.
		An important aspect of tube sound is the soft clipping characteristic of tubes.
		A tube amplifier will reproduce a wave relatively linearly to a point, and as the signal moves beyond the linear range of the tube (into overload), it distorts the signal with a smooth curve instead of a sudden, sharp-edged cutoff.
	en.wikipedia.org /wiki/Tube_sound (2308 words)

	SoundStage! Getting Technical Back-Issue Article (5/2004)
		Traditional tube sound can be described as warm, with fuller-sounding bass, and a sense of space even when music reaches high levels.
		Let’s say that a tube amplifier with transformer has an output impedance of 4 (using 4-ohm output taps), and let’s say that the speaker impedance range is between 6 and 3.
		There are many factors that go into any discussion of tube amplifiers, and this article has just briefly touched upon some of the main topics surrounding the unique sound of tubes.
	www.soundstage.com /gettingtechnical/gettingtechnical200405.htm (1508 words)

	Symphony Sound - Tube Friendly Speakers
		Many of our customers are tube enthusiasts (or aspiring tube enthusiasts), hence one of the most common questions we are asked is "Will my speakers run on tubes?" Many consumers are confused, and others clearly misinformed, regarding what characteristics of loudspeakers yield a "tube friendly" design.
		Many tube enthusiasts state that a speaker must be nominally rated at 8 ohms or higher in order to be tube friendly - this is an oversimplification and will be clarified later.
		Selecting speakers that will sound best on a current limiting solid state amplifier is a similar process to selecting speakers for a tube amplifier, although one need not be quite so rigid in one's criteria.
	www.symphonysound.com /articles/tubefriendly.html (3199 words)

	Tubes Vs. Transistors -- Audibly Different
		The extreme difference in the tube amplifiers is the interchanging of the position of the second and third harmonics.
		The basic cause of the difference in tube and transistor sound is the weighting of harmonic distortion components in the amplifier's overload region.
		Tubes sound louder and have a better signal-to-noise ratio because of this extra subjective head room that transistor amplifiers do not have.
	www.milbert.com /tstxt.htm (4588 words)

	Tube Tester analyzes tubes by Transcendent Sound
		Tubes are almost never operated at the impractical high current conditions shown in the tube manuals.
		Tube testers only show transconductance at one specific operating point and odds are, it's not at the conditions required for your particular circuit.
		Many tubes can be operated with as little as 25 volts on the plate and the Tube Analyzer allows for the determination of these parameters at these and other voltage levels.
	www.transcendentsound.com /tube_analyzer.htm (1248 words)

	Herron Audio: TAS tube article
		The output tubes for each half of the waveform are driven with signals from opposite sides of a circuit known as a phase splitter.
		The high grid-to-plate capacitance of triode output tubes and the resulting Miller effect will require the control grid to be driven with sufficient current to overcome the effective capacitive reactance at the grid.
		The sound will usually be quite different owing to variations in electrical response, microphonics, and internal resonances excited by electrostatic forces in the tube.
	www.herronaudio.com /tastubes.html (2781 words)

	Sound section of the AOpen AX4B-533 Tube Motherboard
		Tubes of this manufacturer are often used in professional and audiophile equipment by various brand-name companies (for example, Behringer).
		The general idea of using the tube in the preamplifier is to soften sound and add the audiophile's peculiar warmth.
		Triode is a primitive tube, an analog of a transistor.
	www.digit-life.com /articles2/aopentube (1148 words)

	How Tube Amps Work - Outer Sound University
		Tube amps work with lethal voltages that can remain in the amp even after it is unplugged.
		What was discovered by this is that electrons (current) actually flowed from the first element of the tube -- the filament or cathode -- to the second element of the tube -- the anode, more commonly known as the plate because of its physical appearance.
		Look at the tubes: if there is an odd number of big tubes, the farthest tube to the left or right side of the amp is probably the rectifier tube.
	www.outersound.com /osu/equipment/to-tube.html (2281 words)

	Transistors vs. Tubes - audible differences
		Tubes have also been cited, albeit not without controversy, as facilitating a controlled so-called infinite sustain effect because of the way their signal compression interacts with acoustic feedback from speaker to guitar string.
		Tube enthusiasts usually contrast the soft sound of tubes with the harsh sound of modern digital recording and mixing, which may have more to do with the use of electrolytic coupling capacitors and inexpensive op-amp ICs than with solid-state devices in themselves.
		The tube EQs often use passive RLC filters, buffered on the input and output with tubes, whereas active filters are the usual basis for modern solid-state EQs.
	milbert.com /articles/CoolSoundOfTubes (9228 words)

	The Science House - Speed of Sound
		In the second part the students measure the velocity of sound by measuring the echoes produced in a tube.
		By measuring the echoes in tubes of different lengths they will learn that the velocity of sound stays the same even though the times and distances change.
		Students should conclude that sound does have a speed and it is measurable The students should determine a speed of sound.
	www.science-house.org /teacher/empower/SpdSound.html (1244 words)

	The Tube CAD Journal, April 1999 pg 1
		We are not saying that the tube is just as quiet as the transistor or FET, as, ultimately, it is not; only that much of what is built with tubes could be much quieter.
		Noise constitutes a large part of what is condemned as the "tube sound," by those who favor solid-state electronics.
		Whereas, the tube audio designer, having no faith in total harmonic distortion measurements, holding to his belief that no meter can beat his ears, forgoes the requirement of extremely low noise operation.
	www.tubecad.com /april99 (724 words)

	D.W. Fearn - Why Tubes? (Site not responding. Last check: 2007-10-10)
		It seems that many of us who used tube gear in the past, and a growing segment of younger engineers and producers, have (re-)discovered tubes.
		The tube or transistor used in a condenser microphone, or in a microphone preamplifier, often will be driven into severe overload by these peaks.
		Tubes sound better because their distortion products are more musical.
	www.dwfearn.com /whytubes.htm (582 words)

	Presonus Blue Tube DP
		As the Blue Tube DP is simply a preamp without EQ or dynamics, the manufacturers have been able to provide all the essential features that you'd expect in a mic pre, specifically a -20dB pad, phase-reverse button, 80Hz low-cut filter, and individually switchable 48V phantom power.
		The Tube Drive control increases the input to the tube stage, but reduces its output to compensate, so there's little overall level change while this is being adjusted.
		With the tube stage switched on, there seemed to be a fine line between not hearing much difference at all and hearing obvious distortion, so for normal work I'd use this below its midway setting and only venture into heavier distortion for special effects.
	www.soundonsound.com /sos/jun05/articles/bluetubedp.htm (1221 words)

	The Altmann "Tube-o-lator" lacquer
		They do not love their tubes in spite of distortion, they love them BECAUSE of the special distortion or spectrum the gear produces.
		DA converter chips) sounds very bad, due to the digital switching inside the chip and due the plastic package material.
		We can use tube circuitry, that may have a different (more natural sounding) overtone behaviour.
	www.altmann.haan.de /tubeolator/default.htm (1744 words)

	Tubes - Tubes n' Tips for Guitar Amps
		Tubes or Valves as there called in the UK, are an old design still used by Guitar Amplifier manufactures today, because they inherently give the Amp and Guitar a traditionally "Warm" sound.
		It all boils down to the sound coming out of your Amp in the end, so it's well worth the while taking the time to check 'em out as each Tube or stage of the signal is vital to get right.
		Tubes can be replaced with a similar type for different sound options such as replacing the Ist Pre-Amp 12AX7 Tube with a 12AY7 on a '59 Fender Bassman or reissue.
	www.universal-total-guitar-plus-center.com /tubes.html (1118 words)

	Alembic Club: The "tube" sound
		I've used "hybrid" amps that have solid state preamp and tube power amp, tube preamp and solid state power amp and "mix or match" solid state/tube preamp and solid state power amp.
		When using a "mix and match" preamp, clearly there is a distinction between all solid state and all tube (which I prefer) and it appears to be in the realm of fidelity.
		But to make a good sounding high power tube system is very difficult because of the problems with impedance matching.
	www.alembic.com /club/messages/449/7809.html?1074568576 (637 words)

	TUBE - Atlanta Broadcast Design, Video Editing, and Sound
		TUBE is a creative post-production facility located in Atlanta, Georgia that specializes in broadcast design, motion graphics, sound and editorial work.
		TUBE’s talented team is recognized not only for their technical abilities, but their creative aesthetic as well.
		TUBE recently collaborated with Dean Pernaci Editorial on a broadcast spot for Cox Communications promoting football in high definition (HD) to its digital subscribers...
	www.tubecreative.com (173 words)

	Emery Sound Tube Amps
		Dynamic sound like this is a product of the natural characteristics of tubes, speakers, and archaic circuits being pushed to their limits.
		That is why old-style amps with their tube rectifiers, loose unregulated power supplies, 'inefficient' biasing schemes, and uncluttered preamp circuits sound so juicy and complex.
		All Emery Sound amplifiers are completely hand built using quality materials, from the eye-popping hardwood and acrylic cabinets to the entirely point to point wired on terminal strips (no circuit board!) aluminum chassis.
	www.emerysound.com /Prelude.html (615 words)

	THS 2005 presentation
		The Surround Sound Tube Headphone is the only headphone that allows the listener to hear each track in their different respective channels at the same time in real ambience all around.
		Each instrument can be heard in different channels around and about the Surround Sound Tube Headphone in real ambience better than what you hear in the most expensive Home Entertainment 5.1 speakers because you are in the sounds.
		The tree of digital sound technology is growing at a faster and faster pace sometimes at the expense of real ambience reflecting authentic acoustical superiority of the original recording environment and the artistic intent of the recording artist.
	www.yulanderson.com /tube/presentation.html (426 words)

	Vacuum Tube Sound Samples
		The saxophone should sound like a sax, not like a kazoo (the latter a sign of midrange colouration), and be free of harshness or stridency.
		I DO have a few questions for you, but first please accept and post this sound byte mp3 I recorded tonight with the circuit lying in a ball in the floor....
		The left channel is the signal as picked up by a microphone in front of the built-in speaker, and the right channel is the direct input taken from the speaker terminals.
	www.dogstar.dantimax.dk /tubestuf/sounds.htm (1209 words)

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