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SUB-TS14  harman/kardon (HKTS 14 SUBWOOFER)
SUB-TS14 harman/kardon (HKTS 14 SUBWOOFER)

... out, reducing bass response. This phenomenon depends in part on the relative placement of the speakers in the room. In most cases, the Phase Switch ¢ should be left in the NORMAL position. However, it does no harm to experiment with the Phase Switch ¢, and you may leave it in the position that maxim ...
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... The AD8045 amplifier is available in a 3 mm × 3 mm LFCSP and the standard 8-lead SOIC. Both packages feature an exposed paddle that provides a low thermal resistance path to the PCB. This enables more efficient heat transfer, and increases reliability. The AD8045 works over the extended industrial t ...
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... presenting a 50ohm source to our spectrum analyzers. This introduces about a 17dB insertion loss from the amplifier outputs to the single ended output from the transformer. • This is what we call the ISL55210 Eval board. That board also includes the option to insert a differential RLC interface with ...
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... capacitance C L has been added to the circuit for completeness. In most multistage amplifiers, the common-emitter or common-source amplifiers will be driving an equivalent load capacitance presented by the input impedance of the next amplifier stage. Analysis of the circuit in Fig. 17.31 begins by r ...
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... Receiver System for British Telecom Spec POR 1151 The circuit shown in Fig. 9 illustrates the use of MT8870D-1 device in a typical receiver system. BT Spec defines the input signals less than -34 dBm as the non-operate level. This condition can be attained by choosing a suitable values of R1 and R2 ...
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... in figure 3. Force BliC excerts force on the driver diaphragm, which then starts to move at velocity u. This creates back-EMF of Blu, which is seen as rise of electrical impedance at driver voice coil terminals. More freely the diaphragm moves, higher the impedance. When the diaphragm moves, it gener ...
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... capacitors because of occupied chip area. Therefore, the design of a floating capacitance multiplier circuit is advantageous from very large-scale integration (VLSI) implementation point of view. This is due to the wellknown fact that the capacitance simulator circuit helps to obtain higher equivale ...
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... ferrites becomes resistive (high Q). Ferrite impedance is a function of material, operating frequency range, dc bias current, number of turns, size, shape, and temperature. The ferrite beads may not always be necessary, but they will add extra high frequency noise isolation and decoupling, which is ...
http://nvlpubs.nist.gov/nistpubs/jres/112/6/V112.N06.A01.pdf
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... The baseband inputs (BBPI, BBMI), (BBPQ, BBMQ) present a differential input impedance of about 2.9kΩ. At each of the four baseband inputs, a lowpass filter using 200Ω and 1.8pF to ground is incorporated (see Figure 1), which limits the baseband bandwidth to approximately 250MHz (–1dB point). The comm ...
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... 0 can be represented by a linear sum of the basis functions {1, cos(0t), cos(20t),…, cos(n0t), sin(0t), sin(20t),…, sin(n0t)} ...
Lecture 7
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Audio crossover



Audio crossovers are a class of electronic filter used in audio applications. Most individual loudspeaker drivers are incapable of covering the entire audio spectrum from low frequencies to high frequencies with acceptable relative volume and absence of distortion so most hi-fi speaker systems use a combination of multiple loudspeaker drivers, each catering to a different frequency band. Crossovers split the audio signal into separate frequency bands that can be separately routed to loudspeakers optimized for those bands.Active crossovers are distinguished from passive crossovers in that they divide the audio signal prior to amplification. Active crossovers come in both digital and analog varieties. Digital active crossovers often include additional signal processing, such as limiting, delay, and equalization.Signal crossovers allow the audio signal to be split into bands that are processed separately before they are mixed together again. Some examples are: multiband dynamics (compression, limiting, de-essing), multiband distortion, bass enhancement, high frequency exciters, and noise reduction such as Dolby A noise reduction.
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