?_FÿÿÿÿÃc6-le®¾( Zapco Audio HelpÊK¶Ul ·eÀ·e/&;)z4 level must bÿÿ±ÿÿÿÿ|CTXOMAP9[|FONT,U|SYSTEM|TOMAPT|TOPICu|TTLBTREE”[|TOPICuoduless## sx++ product:080rSXosThe SX is a Din sized, 5 band parametric equalizer and electronic crossover with an electro-luminescent display.uSpecificationse::Signal to Noise ("A" weighed)c ("A" weighed)o#Front & rear channels, full range > 107 dBt!Front & rear channels, highpass > 105 dBcSubwoofer channelss > 110 dBeHarmonic Distortion + Noise#Front & rear channels, full range< .003%, Typ. .0007%#Front & rear channels, full range< .003%, Typ. .0007%n!Front & rear channels, highpass< .003%, Typ. .0009%eSubwoofer channelsu< .002%, Typ. .0008% Highpass CrossoveroSlope6 or 12 dB/octaveSlope6 or 12 dB/octave Damping#Bessel (Linkwitz-Riley response)gCrossover frequency/Variable in two ranges: 30-660Hz, 330-7200HzpLowpass CrossoverSlope12 or 24 dB/octavemSlope12 or 24 dB/octave DampingBessel or Butte’O‰Oÿÿÿÿ ÿÿÿÿ+ +!qÿÿÿÿHelp Index]+©$€.4°€‚€€‚€€‚ƒá:‰€‚ƒá;‰€‚ƒá>‰€‚ƒá?‰€‚€‚ƒá€‰€‚€ƒá€‰€‚€€‚ƒá‰€‚‚‚€ƒƒ€‚ƒƒ‚ƒƒ‚ƒƒ‚ƒƒ‚ÿSignal Processor HelpCommandsFile MenuCrossover MenuWindowsConfigure MenuWindowsParametric WindowPlot WindowGlossaryDefined TermsZAPCO - Zeff Advanced Products Company413 Yosemite Blvd. Ste. DModesto California, 95355Phone (209) 577-4268, ext. 101FAX (209) 577-8548, 522-8566@@%€€.4°€ƒƒ‚ÿCompuServe: 70323,1251, @,!¯7Plot Windowƒ\,ƒ' €€.4°€€‚ƒÿPlot WindowThe Plot Window displays the selected frequency versus amplitude curve. This window may be sized, which is useful for viewing extra detail and for printing high resolution screen captures. The x (frequency) and y (gain) coordinates of the mouse cursor are displayed in this window as an additional aid in the equalization process.2ƒ2!mÿÿParametric Window†2€Ò€€.4°€‚€‚€ƒá3‰€á2‰€á5‰€á4‰€‚ƒá6‰€‚€ƒƒ‚ƒá7‰€‚€ƒƒ‚ƒá8‰€‚ƒƒ‚ÿParametric WindowThe Parametric Window controls SX, PX, PEQ, or the SPX equalizer and can emulate up to 24 bands of equalization. Filter Select scroll barThe equalizer filter is selected by this scroll bar.Frequency Scroll BarThe filter frequency is controlled by this scroll bar.Gain Scroll BarThe filter gain is controlled by this scroll bar.µ Á«(€.4°€ƒá9‰€‚ƒƒ‚ƒá1‰€‚ƒƒá3‰€á2‰€á4‰€á5‰€‚ƒ€€‚ƒƒá,‰€á-‰€á.‰€á0‰€€‚ƒ€€‚ƒƒ€á+‰€‚ÿQ Scroll BarThe filter Q is controlled by this scroll bar.Eq Type Group BoxThese radio buttons select SX, PX, SPX,or PEQ product characteristics.Plot Mode Group BoxThese check boxes set the Keep old, Iv^d,ie, Equalize, Use Ref, and Smooth functions.Plot Group BoxThese push buttons cause the parametric equalizer or spectrum curves to be plotted. Double clicking the left mouse button or single clicking the right mouse button also causes the curves to be plotted.tCÁt14€€.4°€ƒá*‰€‚€‚ÿFor additional information, see Parametric Window Overview)t)!ƒÿÿÿÿÿÿÿÿGlossary)ýÌ€.4°€€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚€ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá‰€‚ƒá ‰€‚ƒá"‰€‚ƒá#‰€‚€ƒá$‰€‚ƒá%‰€‚ƒá&‰€‚ƒá'‰€‚ÿGlossaryBandwidthBoostButterworthCenter FrequencyConstant QCrossoverCutDecibelEqualizeFilterFrequencyGainImagingLinkwitz RileyOctaveOver SamplingParametricPhaseQWW<J€€.4°€ƒá(‰€‚ƒá)‰€‚€‚ÿSpectraTandem* W*!HÿÿBandwidthå*9D€€.4°€‚ƒ€á‰€á‰€ÿBandwidthThe bounding two frequencies where the signal level has dropped 3 dB with respect to a reference frequency and level. In the case of an equalizer filter, the reference frequency is the filter center frequency.&&!²BoostŒ[&Œ14€€.4°€‚€ƒá‰€‚ÿBoostThe level of a signal, usually measured in decibels, above a reference level., Œ,!2ButterworthÁ,E\€€.4°€‚€ƒ€á&‰€á‰€á"‰€ÿButterworthButterworth defines the slope and phase characteristics of a crossover. This crossover has a faster roll off but poorer phase response than a Linkwitz-Riley crossover.11!ÎCenter Frequency‘a102€€.4°€‚ƒ€á‰€ÿCenter FrequencyThe frequency where a filter reaches its maximum or minimum signHyHal level.+ +!ÌConstant Q¡h+¡9D€€.4°€€‚ƒá‰€á‰€ÿConstant QThe Q of a constant Q equalizer filter remains fixed as the filter gain is changed.* ¡*!ÀCrossover–f*–02€€.4°€€‚ƒá(‰€ÿCrossoverA crossover is a circuit which divides the audio spectrum into two or more spectrums.$–$!®CutŠY$Š14€€.4°€€‚ƒá‰€‚ÿCutThe level of a signal, usually measured in decibels, below a reference level.(Š(!×Decibel¯ˆ(¯' €€.4°€‚€ƒÿDecibelThe relative level of an audio signal, measured in a logarithmic fashion. A 3 dB increase requires a 100% increase in power.)¯)!zEqualizeQ!)Q02€€.4°€€‚ƒá(‰€ÿEqualizeThe processing of an audio signal to adjust the relative levels across the frequency spectrum to achieve a desired response. In the context of this program the equalize check box causes the system response to be equalized according to the settings of the equalizer filters.'Q'!ÙFilter²‹'²' €€.4°€€‚ƒÿFilterA circuit that adjusts level in a frequency dependent way. When used in context of an equalizer, filter is synonymous with band.* ²*!xFrequencyN'*N' €€.4°€€‚ƒÿFrequencyIn audio systems, a tone.%N%!â Gain½„%½9D€€.4°€€‚ƒ€€€á‰€ÿGainA change in signal level. An increase in gain is often referred as "boost", a decrease in level is referred as "cut".!½!!“!f2!r4:€€.4°€€‚ƒá‰€€‚ÿImagingThe ability of an audio system to reproduce the original studio designated or live musical positions. Imaging is often degraded by phase error introduced by poorly designed crossovers and equalizers. ÔõÔFurther degradation of imaging is caused by reflected signals and poor speaker placement., r,!# "Interpolate÷Î,÷)$€€.4°€€‚ƒ‚‚ÿInterpolateTo insert additional data points between finite data points in a digital system. Many algorithms exist for this technique, each with advantages and disadvantages.Also called curve fitting./÷/!¹!#Linkwitz RileyŠ-/Š]Œ€€.4°€‚€ƒ€€€€€€€€€á‰€á‰€á ‰€ÿLinkwitz-RileyLinkwitz-Riley defines the slope, phase , and damping characteristics of a crossover. This crossover has a slower initial roll off but better phase response than a Butterworth crossover. This crossover is said to have better imaging than the Butterworth crossover.'Š'!¯"$Octaveˆ`'ˆ("€€.4°€€‚ƒ‚ÿOctaveThe interval between two frequencies where one frequency is twice that of the other.. ˆ.!0#%Over SamplingÃ.?P€€.4°€€‚ƒá!€‰€á!€‰€ÿOver SamplingThe term "over sampling" is a misnomer. There is only a finite amount of data available in a digital audio system. The correct term would be to interpolate or curve fit.+ +!7$&Parametric ¸+ Tz€€.4°€€‚ƒ€€á‰€á‰€á'‰€€á‰€ÿParametricWhen used in the context of parametric equalizer, the meaning is that all three parameters (Frequency, Gain, and Q) of an equalizer filter are adjustable.& &!*%'PhaseÚ&*&€€.4°€€‚ƒ€ÿPhaseThis term refers to the angular relationship of one wave to another. Phase is measured in degrees or radians. Phase errors introduced by improper crossovers, speaker or equalizers degrade the system imaging.