Parasound D/AC-800 manual ErrorIDataLED, Input Select and LEDs, Polarity Invert Button and LED

Operating your D/AC-800

Power On/Off

Pushthe upper sectionof the button to turn on; lower section for off.

Sampling Frequency LEDs

Your DIAC-800 will recognizethe digital signal of whatevertype of digital sourceyou connectand will switch to the correct sampling rateautomatically. The 44. 1kHz sampling rateis standardfor compactdiscs,while 32kHz is for future FM digital broadcastsand 48kHz is for DAT.

ErrorIDataLED

In casethereis an interuption of datafrom the digital sourceor a malfunction of the digital source or connection,the ErrorIData LED will illuminate. This showsyou that your DIAC-800 is not receiving correctdigital datato processand convert to analog. In this case,a muting circuit will preventan unwanted"garbage"signal passedto Analog Out or the Digital Out Recordjacks.

Input Select and LEDs

The threeInput SelectLEDs correspondto the different input connectorson the rearpanel: Coaxial 1, Coaxial 2 andOptical. Your DIAC-800 will automatically selectinputs with first priority to Optical, secondselectionpriority to Coaxial 1,third selectionpriority to Coaxial 3.

Since input switching for listening and recording is detenninedby this order of priorities, you must turn off any digital sourcesyou don'twant to hearor record. There is anothervery good reasonto switch off other digital sources:

RF radiationsfrom unselecteeddigital sourcesmay "contaminate"the datastreamof the selected input sourceyou wish to hear. If you have more than one digital sourcep,make sureyou turn off the power of eachunusedsourceuntil you are ready to listen to it.

Polarity Invert Button and LED

This button allows you to selectbetween00normal operationand 1800 invertedpolarity. Even if you know if your preamplifier and power amplifier areinverting or non-inverting designs,you have no way to know which of your CD'smay havebeenrecordedwith inverted absolutepolarity.

. Absolute polarity is not the sameasLeft-Right loudspeakerphasing. Absolute polarity meansthe + and - of both channelsare reproducedso the compressionwave of an initial musical attack

correlatesto the compressionwave (+) from outgoing speakerdiaphragmmotion rather than rarefraction(-) of ingoing speakerdiaphragmmotion.

Your choiceof 00or 1800polarity will be strictly a matterof taste. It may be easierto detect

differencesbetween00and 1800polarity with somerecordingsthan with others. Don'tbe discouragedif you cannothearthe difference - not everyonecan identify absolutepolarity.

De-Emphasis LED

Somedigital recordingsareencodedwith pre-emphasiscontouring. Your D/AC-800 automatic- ally recognizesandprocessesthem. An LED illuminates asa beaconfor visual confinnation.