Parasound D/AC-1000 User's Manual
Contents
1. PARASOUND affordable audio for the critical listener D AC 1000 Digital Analog Convertor Congratulations on the purchase of your new Parasound D AC 1000 Digital to Analog Converter It has been designed to extract greater musical detail from any digital source If you are using it to upgrade your CD player you will find the D AC 1000 makes a world of improvement You will enjoy more of the warmth and depth that has previously been associated only with the finest analog sources Your D AC 1000 sets new performance standards at its modest price Its high quality parts triple power supply high current drive analog stages plus hookup and operating flexibility are superior to even many far more expensive D A converters To assure fullest musical enjoyment please take a few moments to read these instructions completely Unpacking Open the carton of your D AC 1000 carefully and inspect the unit for possible shipping damage Now is the time to report any damage to your dealer You will find the detachable AC line cord packed separately inside the carton We do not recommend use of any other line cord Save the plastic bag styrofoam inserts and carton You may need these later for transporting the D AC 1000 or for shipment in the event it ever requires factory servicing Record the serial number on rear panel here for reference in case your unit is stolen Placement You should locate your D AC 1000 as close as possible to your digita2. Like most other great audio components your D AC 1000 needs to operate for at least 72 hours before it will start sounding its best This allows the materials of various internal parts to form so they can better process the complexities of musical waveforms While your unit will sound spectacular right out of its carton you ll find it worthwhile to listen again after a few days You ll discover details in your music you wouldn t have guessed were there Maintaining your D AC 1000 Your D AC 1000 needs no routine maintenance We do recommend that you remove and twist the various RCA connections once a year to remove any corrosion buildup on plugs and jacks Make sure the power is turned off before attempting this It is not a bad idea to do this for each of your other components while you re at it Never use any commercial cleaners or abrasives on the front panel or top cover they will likely scratch or disfigure them Use only a soft cloth if necessary slightly damp to remove fingerprints In Case of Trouble The D AC 1000 has an external fuse which may blow as a result of an internal fault condition This protects the unit from possible damage to internal parts Never replace this or any internal fuse with a larger value Substitution of any larger fuse may create serious stress or damage to internal parts and will void your warranty If you suspect a problem with this unit first recheck all your connections If one channel is inoper
3. for audio frequencies are not suitable and will not give you satisfactory results e TOSlink fiber optic connections are also popular and are found on most high quality video laser disc players as well as CD players and CD transports Your dealer can assist you to select an appropriate optical cable with TOSlink connectors According to the TOSlink standard you are restricted to TOSlink cable lengths from 0 2m 8 to 10m 30 ST module fiber optics are considered state of the art They are superior to either coaxial or TOSlink connectors for data transmission The ST module employs the AT amp T standard both plastic and glass fiber optic connectors are available for ST modules connectors You should experiment among the connector options to determine which sounds the best in your system You may find careful extended listening required in order to hear the subtle differences between the different interface technologies accomodated by the D AC 1000 It is possible to connect three separate digital sources to your D AC 1000 and select among them from the front panel however RF radiations from the unused digital inputs may contaminate the sound of the selected input source If you have more than one digital source connected make sure you turn off the power of the unused source s until you are ready to listen to it Outputs Connect the Analog Output jacks to any line level input on your preamplifier or even your power amplifier
4. gt 100dB 20kHz Total Harmonic Distortion lt 0 0025 1kHz Amplitude Linearity gt 95dB 98dB typical Phase Linearity 0 1 20kHz Maximum Jitter HF lt 150 picoseconds RMS D A Converters 20 bit push pull independent for each channel Oversampling Rate 8x 352 8kHz Digital Input 32kHz 48kHz Consumer standard SPDIF Filters 8x interpolating digital filter two 2 3 order low pass anti imaging filters Absolute Polarity 0 or 180 switchable Digital Inputs Coaxial 75Q RCA e TOSlink fiber optic EIAJ Standard CP 340 RC 5720 660nm typical wavelength ST module fiber one AT amp T Standard 820nm typical wavelength Outputs Analog Line Out 2V nominal 6000 suitable load 10kQ e Digital 75Q RCA coaxial 0 5V peak to pea Power Supplies 3 separate transformers for digital each analog channel Power Requirement 120V 60Hz 15W may be re wired for 220 240V 50Hz Dimensions 19 W x3 3 8 Hx 12 D Net Weight 15 4 Ib Specifications subject to change without notice ST is a registered trademark of AT amp T Corporation Rewiring for 220 240V 50Hz Operation The D AC 1000 can be rewired for operation abroad Please refer this conversion to a skilled electronics technician to avoid personal injury or possible harm to the unit There are high voltages present inside the chassis even after the power is tumed off The main power supply printed circuit board has three separate power transformers Nearby th
5. if it is equipped with level controls Use only high quality hookups to preserve detail and clarity Make sure your preamp is either turned off or its volume set to minimum when making these connections If you have a digital recorder DAT MD DCC CD R you may connect its record input to the De ee Digital Output Record jack This is an RCA type connector use only digital quality cable AC Power Your D AC 1000 has an IEC standard detachable power cord which has been specially selected for its contribution to the sound quality of this unit Try to connect only this cord directly to a nearby AC wall outlet and avoid extension cords or connection to accessory outlets on your preamp If you are considering an AC line conditioner be advised that it may not have a positive influence on the sound of your D AC 1000 Operating your D AC 1000 Power On Off Push the upper section of the button to turn on lower section for off Sampling Frequency LEDs Your D AC 1000 will recognize the digital signal of whatever type of digital source you connect and will switch to the correct sampling rate automatically The 44 1kHz sampling rate is standard for compact discs i Error Data LED In case there is an interuption of data from the digital source or a malfunction of the digital source or connection the Error Data LED will illuminate This shows you that your D AC 1000 is not receiving correct digital data to process and convert to analog In this
6. ative the trouble may be caused by another component or even a defective hookup cable If only one channel is out for all sources try reversing the Left and Right cables to your preamplifier turn it off before moving wires If the same channel stays out it indicates trouble other than with the D AC 1000 We suggest you contact your authorized Parasound dealer or call Parasound Technical Service if you suspect a problem We will suggest other diagnostic tests you can easily perform yourself and which will save you a lot of trouble If it is determined that your D AC 1000 should be returned for inspection and possible servicing you must first obtain a Return Authorization number You are expected to re pack the unit in its original styrofoam packing and both its original cardboard carton plus a slightly larger outer carton for proper protection in transit You should send the unit by UPS with adequate insurance specified Units that arrive without the correct Return Authorization number without a suitable outer shipping carton or evidence of improper internal packing or collect will be refused We cannot accept collect shipments After repair under warranty the unit will be returned to you via prepaid be or RPS If we can find no problem with the unit we will ship it collect for return shipping charges D AC 1000 Specifications Frequency Response 2 5Hz 20kHz ee Signal to Noise Ratio gt 110dB 115dB typical Channel Separation
7. case a muting circuit will prevent a garbage signal passed to Analog Out or the Digital Out Record jacks Input Select Buttons and LEDs The three Input Select buttons correspond to the three different types of input connectors on the rear panel Coaxial Optical 1 Optical 2 Polarity Invert Button and LED This button allows you to select between 0 normal operation and 180 inverted polarity Even if you know if your preamplifier and power amplifier are inverting or non inverting designs you have no way to know which of your CD s may have been recorded with inverted absolute polarity e Absolute polarity is not the same as Left Right loudspeaker phasing Absolute polarity means the and of both channels are reproduced so the compression wave of an initial musical attack correlates to the compression wave from outgoing speaker diaphragm motion rather than rarefraction of ingoing speaker diaphragm motion l Your choice of 0 or 180 polarity will be strictly a matter of taste It may be easier to detect differences between 0 and 180 polarity with some recordings than with others Don t be discouraged if you cannot hear the difference not everyone can identify absolute polarity De Emphasis LED Some digital recordings are encoded with pre emphasis contouring Your D AC 1000 automatic ally recognizes and processes them An LED illuminates as a beacon for visual confirmation Burning in your D AC 1000
8. e transformers you will find jumper wires which correspond to the various primary windings of each power transformer For 120V operation a total of six jumper wires are connected to the circuit board two jumpers are connected near each transformer each jumper has 120V printed alongside of it on the circuit board i For 220 240V operation only 3 jumpers are connected to the circuit board one jumper is connected near each transformer each jumper has 220V printed alongside of it on the circuit board For 220 240V operation you must also disconnect the six 120V jumpers Parasound Limited Warranty USA only Your Parasound HCA 2200II is covered by a limited warranty against defects in materials and workmanship for a period of two years from date of purchase This warranty is provided by the Parasound dealer where the unit was purchased Warranty repair will be performed only when your purchase receipt is presented to validate your ownership date of purchase and authorized status of the selling dealer Defective parts will be repaired or replaced without charge by your authorized dealer s store or the location designated by your dealer that is authorized to service Parasound equipment Additional information is available by calling or writing to the Service Manager Parasound Products Inc at the address below Charges for unauthorized service and transportation costs are not reimbursable under this warranty This warran
9. l source Keep your unit out of direct sunlight away from heat sources such as a hot air register or radiator and away from windows which might be left open to let in rain if you are stacking your components you should avoid placing your D AC 1000 on top of heat producing components such as power amplifiers or tube type preamps You should keep it as far as possible from your tuner or receiver to avoid interference from their RF local oscillator circuits Connecting Your D AC 1000 When you make connections be careful to avoid tension on either wires or fiber optic cables which might cause damage to the connectors or cause them to pull loose later on Do not attempt to bend either coaxial or optical digital cables at a sharp angle as this may permanently damage them It is safest to turn off the power of your preamp and power amp while making connections not only for the connections you are making but to avoid the chance of disturbing adjacent connections As an additional safeguard turn your preamp s volume control to minimum before making new connections Digital Inputs The D AC 1000 offers you three different digital interface options e Coaxial RCA jack 750 standard e Optical 1 Fiber Optic ST module Optical 2 Fiber Optic TOSlink Coaxial output connections are provided on most high quality CD players You should use only a good quality cable which has been designed for digital data transmission Cables designed
10. products in development If you d like us to keep you advised just drop a line and ask to receive updates We welcome your suggestions and look forward to hearing from you PARASOUND affordable audio for the critical listener Parasound Products Inc 950 Battery Street San Francisco CA 94111 800 822 8802 415 397 7100 FAX 415 397 0144
11. ty becomes void if the product has been damaged by alteration misuse accident or neglect Alteration includes removal obscuration or defacement of its serial number This warranty becomes void if unit has been bumed out by abusive extended testing or operation with load impedances contrary to printed instructions This warranty applies only to units used in residential non commercial situations The warrantor assumes no liability for property damage or any other incidental or consequential damage whatsoever which may result from the failure of this product Any and all warranties of merchantability and fitness implied by law are limited to the duration of this expressed warranty Some states do not allow limitations on how long an implied warranty lasts so the above limitations may not apply to you Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary state by state l Please Stay in Touch We d like to hear from you about your experience with your Parasound HCA 2200II Of course we want to assist you with any questions you may have but we d also be thrilled to know how much you are enjoying the unit You don t need to have a problem as an excuse to call Reviews on Parasound are coming in from all over the world and we continually have exciting new
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