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A measurement of 20 to 20, Hz, 3dB means those frequencies between 20 and 20, Hz can be reproduced no more than 3 dB above or below a reference frequency level. A measure of the impediment to the flow of alternating current, measured in ohms at a given frequency. A component that converts electrical energy into acoustical energy.

A filter that passes high frequencies, and attenuates low frequencies. A 20mm threaded pole socket on the top panel allows you to securely mount a satellite speaker on top of the subwoofer. Also used as a term for loudspeaker drivers designed to reproduce both bass ssrx718s midrange frequencies. Also, laser discs used an RF signal for modulating Dolby Digital 5. A type of equalizer with sliding controls that creates a pattern representing a graph of the frequency-response changes.

Television signals are modulated onto RF jgl and are then demodulated by your television’s tuner. Update Unrecognized Zip Code. Increase in level or amplitude. A speaker designed to reproduce the full range 20 Hz to 20 kHz of audio frequencies.

Kilohertz or one thousand Hz. A comparison of the signal level relative to the noise level.

Used, Second hand JBL SRX S 18″ Subwoofer

Integrated handles provide convenient transportation, and threaded insert points on the bottom allow you to attach an optional wheel kit sold separately for additional mobility. Anything that processes an incoming signal in some way. VCRs and DBS receivers often include channel 3 or 4 modulators, allowing the output signal to be tuned jbp the television on those channels.


Raising sliders boosts the affected frequencies; lowering sliders cuts attenuates the affected frequencies. In audio, audible frequencies commonly range from 20 to 20, cycles per second Hz.

Also used as a term for loudspeaker drivers designed to reproduce this range.

Certification program for home theater equipment. The middle of the audio frequency range. These words all refer to the initial few seconds of audio signifying the beginning of the production.

JBL SRX718S 18″ High Power PA Subwoofer

This refers to amicrophone with a flexible neck that is most frequently attached to a podium or lectern. Reviews 0 Write a review. Low-frequency video images depict large objects or images.

A large port helps to extend low frequency response while reducing compression and turbulence. Nobody agrees on which. A gradual increase in audio, i. A mixer provides for both mic and line input combinations while allowing you to control one aubwoofer more outputs. Enter new zip code to refresh estimated delivery time.

JBL SRXS 18″ High Power PA Subwoofer | eBay

Large port area for reduced distortion. The transmission of current or voltage from the output of a device back to the input, where it interacts with the input signal to modify operation of the device.

The preamp comes in the signal chain before the amplifiers. Be the first to review this item. Last items in stock! A speaker designed to reproduce very low bass frequencies, usually those below about 80 Hz. NATS can be used to help characterize the setting. It can sometimes be found on DVD-Video. PCM a way to convert sound or analog information to binary information 0s and 1s by taking samples of the sound and record the resulting number as binary information.


Feedback is positive when it’s in phase with the input and negative when it’s out of phase. The nonverbal audio that occurs in a non-studio setting.

This system allows attendees to hear the meeting in their own language. The minimum purchase order quantity for the product is 1. Larger numbers mean higher resistance to current flow.

Surround processors, for example, can decode a Dolby Digital signal to send to an amp so you can hear it. It is designed to allow the speaker to raise or lower the microphone to a suitable height. The sub has a strong ply birch enclosure that is internally braced for durability and exceptional sonic performance. This requires an RF demodulator usually referred to as an AC3-RF demodulator before or in the surround processor to decode the signal.

The number of cycles vibrations per second. A measure, usually in watts, of how much energy is modulated by a component. Is compatible with any and all soundtrack formats.

Something that repeats a cycle once each second moves at a rate of 1 Hz. Time relationship between signals; it’s all relative. Uses some proprietary features, but mostly assures a base quality level for a given room size.

This is the unit in which audio signals are directed from.