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Manual - American Musical Supply
Manual - American Musical Supply

Pickups, Volume, and Tone Controls
Pickups, Volume, and Tone Controls

... home may radiate enough 60 Hz energy that a significant voltage may be induced in a magnetic guitar pickup. This is a common source of annoying 60 Hz hum. Singlecoil pickups are especially sensitive to this interference, where the pickup is acting like an antenna that is sensitive to the magnetic co ...
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... features AUTO ON-LINE® circuitry which reduces the power supply drain to a 1µA supply current. In many portable or hand-held applications, an RS-232 cable can be disconnected or a connected peripheral can be turned off. Under these conditions, the internal charge pump and the drivers will be shut do ...
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... subsequent modules is somewhat simplified, in that it has a basis on which it can build. Building these parameters was based on the square-law equation for transistors and since the specification for the thesis is low-voltage, the transistors were designed to be operated in the saturation region wit ...
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Longitudinal-Partitioning-Based Waveform Relaxation Algorithm for Efficient Analysis of Distributed Transmission-Line Networks
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... A. Background of Waveform Relaxation Algorithms Waveform relaxation, from its introduction in [2], has proven to be an attractive algorithm to address the issue of exorbitant computational costs for solving large networks using traditional circuit solvers like SPICE. The algorithm is based on partit ...
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... In many applications it is desirable to obtain voltage gain from a booster stage. Most monolithic amplifiers will only swing ±12V, although some types, such as the LM143, can swing ±35V. The circuit of Figure 5 shows a simple way to effectively double the voltage swing across a load by stacking or " ...
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... Figure 6 shows the simulated response of the same structure using Ansoft HFSS for a range from 1-120GHz. The simulation shows that the switch has a rejection of more than 16dB when the switch is down and it increases with the frequency of the RF signal. The simulation results of both software tools ...
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... significant contributions to the performance of the final products in which the devices are used. The challenges and statuses of these MEMS devices are discussed. In this paper, a cantilever type of switch is proposed that could reduce the stress sensitivity of the switch as well as providing a low ...
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... a short circuit, the malfunction can not be detected by the examining of the electrical signals but only by the acceleration profile of the flyer. 2.3 The fibre optic probe (FOP) for detonation velocity measurements At TNO a sensor has been developed that monitors the build-up of a detonation but is ...
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Transmission line loudspeaker

A transmission line loudspeaker is a loudspeaker enclosure design (topology) that uses an acoustic transmission line within the cabinet, compared to the simpler enclosures used by sealed (closed) or ported (bass reflex) designs. Instead of reverberating in a fairly simple damped enclosure, sound from the back of the bass speaker is directed into a long (generally folded) damped pathway within the speaker enclosure, which allows far greater control and use of speaker energy, and the resulting sound.Inside a transmission line loudspeaker, is a (usually folded) pathway into which the sound is directed. The pathway is often covered with varying types and depths of absorbent material, may vary in size or taper, and may be open or closed at its far end. Used correctly, such a design ensures that undesired resonances and energies, which would otherwise cause undesirable auditory effects, are instead selectively absorbed or reduced (""damped"") due to the effects of the duct, or alternatively only emerge from the open end in phase with the sound radiated from the front of the driver, enhancing the output level (""sensitivity"") at low frequencies. The transmission line acts as an acoustic waveguide, and the padding both reduces reflection and resonance, and also slows the speed of sound within the cabinet to allow for better tuning.Transmission line loudspeakers designs are more complex to implement, making mass production difficult, but their advantages have led to acclaim for a number of manufacturers such as IMF, TDL, PMC, KVART & BØLGE and the like. As a rule, transmission line speakers tend to have exceptionally high fidelity low frequency response far below that of a typical speaker or subwoofer, into the infrasonic (British company TDL's studio monitor range from the 1990s quoted their frequency responses as starting from as low as 7 Hz depending upon model) at sensitivity 96 dB, without need for a separate enclosure or driver. Acoustically, TL speakers roll off slower at low frequencies and provide better driver control than standard reflex cabinet designs, are less sensitive to positioning, and tend to create a very spacious soundstage. Modern TL speakers were described in a 2000 review as ""match[ing] reflex cabinet designs in every respect, but with an extra octave of bass, lower LF distortion and a frequency balance which is more independent of listening level"".Although more complex to design and tune, and not as easy to analyze and calculate as other designs, the transmission line design is valued by several smaller manufacturers, as it avoids many of the major disadvantages of other loudspeaker designs. In particular, the basic parameters and equations describing sealed and reflex designs are fairly well understood, the range of options involved in a transmission line design mean that the general design can be somewhat calculated but final transmission line tuning requires considerable attention and is less easy to automate.
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