USER'S MANUAL ENGLISH
Contents
1. e Proel warrants all materials workmanship and proper operation of this product for a period of two years from the original date of purchase If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period the owner should inform about these defects the dealer or the distributor providing receipt or invoice of date of purchase and defect detailed description This warranty does not extend to damage resulting from improper installation misuse neglect or abuse Proel S p A will verify damage on returned units and when the unit has been properly used and warranty is still valid then the unit will be replaced or repaired Proel S p A is not responsible for any direct damage or indirect damage caused by product defectiveness Clean only with dry cloth e Proel products have been expressly designed for audio application with signals in audio range 20Hz to 20kHz Proel has no liability for damages caused in case of lack of maintenance modifications improper use or improper installation non applying safety instructions e Proel S p A reserves the right to change these specifications at any time without notice e Proel S p A declines any liability for damages to objects or persons caused by lacks of maintenance improper use installation not performed with safety precautions and at the state of the art CODE 96MAN0010 ENG ENGLISH PROEL S p A World He2. Max Output Level 1 channel passive DI 120K Ohm pad at 0 dB 47k Ohm pad at 20 60 dB 44k Ohm pad at 40 dB 15 dBu pad at 0 dB 35 dBu pad at 20 dB 55 dBu pad at 40 dB 75 dBu pad at 60 dB Two Parallel 1 4 jack connectors and one parallel RCA connector unbalanced Jack Tip Hot Sleeve Ground Transformer Balanced isolated with shielding into 1K Ohms or greater 5 dBu for 0 1 THD at 50 Hz System Performance Insertion loss CMR Phase distortion Distortion THD 50 20k Hz OdBu Noise Frequency Response Controls Indicators General Phantom Power External AC DC adaptor Standalone Standby Current consumption mono CH unbal hi z en HALLALL 20 dB gt 100 dB 0 at 20 Hz 0 at 20k Hz lt 0 007 lt 105 dBu unweighted 10 Hz to 100 kHz 0dB 1 dB Pad 20 Pad 40 Gnd Lift Filter 12 emulator none unnecessary unnecessary unnecessary unnecessary 5 dBu for 0 1 THD at 1k Hz Dimensions W x H x D 215x50x 125mm Connector XLR male Pin 2 Hot Pin 3 Cold Pin1 Ground Weight excluding batteries 1K long cables XLR balanced long cables XLR balanced GND LIFT must be always pressed set PAD switches to 20 or 40 or 60 to have a signal without distortion amplifier power out power cable jack jack speaker link power cable jack jack instrument o M
3. loops are eliminated and a tremendous reduction in common mode noise is possible The DB1 P features a mic level balanced output XLR male connector and a high impedance hi z jack input To obtain both these features the transform ratio of DB1 P is 11 1 so DB1 P has an insertion loss of 20 dB without any PAD switch depressed The moulded sides make stacking of multiple units easier and help isolate the case of the Dl box from the stage both electrically and mechanically PROEL TECHNOLOGY AS ART 1 INPUT unbalanced JACK or RCA Connect the source instrument to this 1 4 jack or rca pin socket to receive the signal The input impedance depends by PAD setting 120 Kohm with no pad 47 Kohm with pad insertion 2 LINK unbalanced JACK Connect this 1 4 jack to the input of the backline instrument or monitor amplifier NOTE If you are using a tube amplifier power output 4 8 or 16 ohm you must connect always a speaker of matched impedance in parallel also using the LINK jack on DB1 P for these connections you have to use always jack jack power cables avoiding jack jack signal cables 3 PAD switch The pad switches reduce the input signal to the circuit to ensure a clean and distortion free signal Four steps are possible 20 dB no pad 40 dB left only 60 dB right only 80 dB both Always use as little as attenuation as possible to get the best possible signal with reference to the noise floor The highest a
4. This marking shown on the product or its literature indicates that it should not be disposed with other household wastes at the end of its working life To prevent possible harm to the enviroment or human health from uncontrolled waste disposal please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources Household users should contact either the retailer where they purchased this product or their local government office for details of where and how they can take this item for HS environmentally safe recycling Business users should contact their supplier and check the terms and conditions of the purchase contract This product should not be mixed with other commercial wastes for disposal CAUTION Before using this product read carefully the following safety instructions Take a look of this manual entirely and preserve it for future reference When using any electric product basic precautions should always be taken including the following To reduce the risk close supervision is necessary when the product is used near children Protect the apparatus from atmospheric agents and keep it away from water rain and high humidity places This product should be site away from heat sources such as radiators lamps and any other device that generate heat Care should be taken so that objects and liquids do not go inside the product The product should be connected to a
5. adquarters Factory Via alla Ruenia 37 43 64027 Sant Omero TE ITALY Tel 39 0861 81241 Fax 39 0861 887862 proelgroup com DB1eP USER S MANUAL PROEL TECHNOLOGY AS ART DB1eP ZAITE INPUT PAD 60dB 2 wB FILTER BAL OUTPUT PROEL The name DI box comes from direct injection box that means exactly To inject a signal directly or take an audio signal from the source and send it directly to a mixer console or recorder Direct boxes perform several important functions they are designed as impedance matching and signal balancing devices This means that they take the high impedance of a guitar or keyboard and transform it to the low impedance used in balanced sound systems Balanced signals inherently cancel noise and due to their lower impedance are capable of very long cable runs Balanced signals are the norm in professional recording broadcast and live sound By properly matching the impedance you will enjoy better sound less noise and an extended frequency response DB1 P is a passive direct box with transformer and does not require any external power such as phantom or batteries to work Just plug in and play The beauty of a transformer is that there is no electrical connection between the primary and the secondary The signal is transformed from electrical energy to magnetic then back to electrical in effect a magnetic bridge This provides two huge benefits with no electrical path ground
6. i e Q 000 Occ ee00ec A instrument amplifier speaker instrument shielded signal cable jack unbal
7. power supply only of the type described on the operating instructions or as marked on the product Incase of fault or maintenance this product should be inspected only by qualified service personnel when Liquids have spilled inside the product The product has fallen and been damaged The product does not appear to operate normally or exhibits a marked change in performance Do not operate on the product it has no user serviceable parts inside Refer servicing to an authorized maintenance centre e Proel products comply with directive 89 336 EEC EMC and following modifications 92 31 EEC and 93 68 EEC as stated in EN 55103 1 and EN 55103 2 standards and with directive 73 23 EEC LVD and following modifications 93 68 EEC as stated in EN 60065 standard e This unit package has been submitted to ISTA 1A integrity tests We suggest you control the unit conditions immediately after unpacking it Ifany damage is found immediately advise the dealer Keep all unit packaging parts to allow inspection e Proel is not responsible for any damage that occurs during shipment Products are sold delivered ex warehouse and shipment is at charge and risk of the buyer Possible damages to unit should be immediately notified to forwarder Each complaint for manumitted package should be done within eight days from product receipt e Proel products have operating warranty and comply their specifications as stated by manufacturer
8. ttenuations make possible to connect the DB1 P to any amplifier output without saturate the mic input of your mixer desk 4 FILTER switch The filter switch insert a gentle filter after 4KHz to simulate the behaviour of a guitar 12 speaker amplifier This switch has an effect only if one or more PAD switches are pressed 5 BAL OUTPUT male XLR This male XLR output connector is the balanced microphone level output of the DI and it is wired with pin 1 ground pin 2 hot and pin 3 cold 6 GND LIFT switch Use the GND LIFT switch to either connect the ground pin of input and output or keep them fully separated Depending on the grounding of the connected devices linking or disconnecting will reduce hum and buzz noises and prevent ground loops NOTE Always make sure the GND LIFT is pressed no ground link when connecting to speaker terminals this prevents accidental short circuiting of the amplifier output Also make sure the TIP of the input jack is connected to the red wire and that the metal chassis of the DB1 P has no contact with other equipment Simply removing the two molded sides and attaching two units with the supplied brackets you can mount two by two DI boxes into a standard 19 rack o Yo oo OSS a tu o X2 FRONT AND BACK g FIXING SCREWS FIXING SCREWS Par FIXING SCREWS FIXING SCREWS aa 1 1 System Type Input Section Input Impedance Max Input Level Connectors Output Section Output
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