Most tube amplifiers with their higher output impedance are less ideal voltage amplifiers than the solid state voltage amplifiers with their smaller output impedance. Yet MOSFET amplifier circuits typically do not reproduce tube sound any more than typical bipolar designs. An amplifier with little or no negative feedback will always perform poorly when faced with a speaker where little attention was paid to the impedance curve. SET amps have a power consumption of a minimum of 8 times the stated stereo power.

The triode, despite being the oldest signal amplification device, also can (depending on the device in question) have a more linear no-feedback transfer characteristic than more advanced devices such as beam tetrodes and pentodes.

baritone horn Sound Effects (72) Most recent Oldest Shortest duration Longest duration Any Length 2 sec 2 sec - 5 sec 5 sec - 20 sec 20 sec - 1 min > 1 min All libraries SFX Bible 0:01 [17] In addition to that, many solid-state amplifiers, designed specifically to amplify electric instruments such as guitars or bass guitars, employ current feedback circuitry. [29] Monteith and Flowers said: "In conclusion, the high voltage transistor preamplifier presented here supports the viewpoint of Mintz: 'In the field analysis, the characteristics of a typical system using transistors depends on the design, as is the case in tube circuits.

Tubes are often used to impart characteristics that many people find audibly pleasant to solid state amplifiers, such as Musical Fidelity's use of Nuvistors, tiny triode tubes, to control large bi-polar transistors in their NuVista 300 power amp. What is the time signature of the song Atin Cu Pung Singsing? Ano ang pinakamaliit na kontinente sa mundo?

Who is the longest reigning WWE Champion of all time? Video Tip of the Week: The Tenor Tuba from Mars! Specifications, p.20. [2][3] The audible significance of tube amplification on audio signals is a subject of continuing debate among audio enthusiasts. Later forms of the tube, the tetrode and pentode, have quite different characteristics that are in some ways similar to the bipolar transistor.

[further explanation needed][4], Many electric guitar, electric bass, and keyboard players in several genres also prefer the sound of tube instrument amplifiers or preamplifiers. This is complemented by the distant horn pad above (remember horn pads?).

On the other hand, the dominant pole compensation in transistor amplifiers is precisely controlled: exactly as much of it can be applied as needed to strike a good compromise for the given application.

Fine examples are cases of distortion or frequency response: HiFi design tries to minimize distortion and focuses on eliminating "offensive" harmonics.

The resistance can be switched in when required.[31]. Ultra-linear topology has mostly been associated with amplifier circuits based on research by D. Hafler and H. Keroes of Dynaco fame. [25][26] Their output impedances have been intentionally developed to approach zero. [33] It should be pointed out that this reference is somewhat ironic given its publication date of 1952.

Farts That Sound like Other Things - Duration: 1:20. mikefalzone Recommended for you. 1952, p. 3.

Hypothetically, a single-ended power amplifier's second harmonic distortion might reduce similar harmonic distortion in a single driver loudspeaker, if their harmonic distortions were equal and amplifier was connected to the speaker so that the distortions would neutralize each other.[36][37][38].

[14] The difference in harmonic patterns of these two topologies has henceforth been often incorrectly attributed as difference of tube and solid-state devices (or even the amplifier class). With lower feedback, distortion is higher and predominantly of low order. In fact, the generic triode gain stages can be observed to clip rather "hard" if their output is scrutinized with an oscilloscope. Sometimes this sag effect is desirable for guitar amplification.

Musical instrument amplifier design deliberately introduces distortion and great non-linearities in frequency response. The reason is that tube amplifiers normally use output transformers, and cannot use much negative feedback due to phase problems in transformer circuits. In other words, soft clipping is not exclusive to vacuum tubes or even an inherent property of them. [citation needed], The design of speaker crossover networks and other electro-mechanical properties may result in a speaker with a very uneven impedance curve, for a nominal 8 Ω speaker, being as low as 6 Ω at some places and as high as 30–50 Ω elsewhere in the curve.

Bass tuba sounds like an attack . One consequence of this is that all even-order harmonic products cancel, allowing only odd-order distortion. It has a limited repertoire, so if a French horn player plays the Wagner tuba part, it can sometimes result in problems with intonation. transformer coupling) can drive power tubes to class AB2, while some other types can't.

Soft clipping is a very important aspect of tube sound especially for guitar amplifiers. Design "selectivism" is again a trend to observe: designers of sound producing devices may find the lack of feedback and resulting higher distortion beneficial, designers of sound reproducing devices with low distortion have often employed local feedback loops. [citation needed], Loudspeakers present a reactive load to an amplifier (capacitance, inductance and resistance). Early tube amplifiers often had limited response bandwidth, in part due to the characteristics of the inexpensive passive components then available.

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When the tube amplifier was operated at high volume, due to the high impedance of the rectifier tubes, the power supply voltage would dip as the amplifier drew more current (assuming class AB), reducing power output and causing signal modulation. This thread is archived. This relates somewhat to the role of the tuba in most scoring. Especially in case of designing or reviewing instrument amplifiers this is a considerable issue because design goals of such differ widely from design goals of likes of HiFi amplifiers. But for now, think of similarities in tone pointing to parallels of function. Weighting the distortion wave-form proportionally to the square of the frequency gives a measure of the reciprocal of the radius of curvature of the wave-form, and is therefore related to the sharpness of any corners on it. In power amplifiers most limitations come from the output transformer; low frequencies are limited by primary inductance and high frequencies by leakage inductance and capacitance. Some musicians[6] Pagkakaiba ng pagsulat ng ulat at sulating pananaliksik? This delay can protect rectifier-supplied vacuum tubes from cathode damage due to application of B+/HT voltages before the tubes have reached their correct operating temperature by the tube's built-in heater.

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More recently, researcher has introduced the asymmetric cycle harmonic injection (ACHI) method to emulate tube sound with transistors. EL34 vs. 6L6 tetrodes). 0:02. When I was in college, and went into testing situations, and sometimes quiet classes I would notice my stomach making strange noises. MN10002975-A. Its conical shape gives it a timbre that’s actually more similar to a horn than to the trombones. In fact, in places where you might really want a horn solo, or a horn to support a line, but the pitch is too low to get that characteristic sound, then you are really thinking of a tuba, not a horn.



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