User Manual
Contents
1. Thank you for choosing Kopul Kopul s HMX 2 Humbuster is an effective yet cost effective way to eliminate the 60 cycle buzz and noise caused by ground loops By inserting it into the line level signal path 4dBu or 10dBv the HMX 2 eliminates the ground loop while leaving your signal intact A humming or buzzing sound is often a telltale sign of a ground loop caused by the formation of a connection path between the grounds of two or more pieces of equipment The Humbuster offers a fast and direct solution to this problem by breaking the ground loop without degrading the signal The Humbuster features inputs and outputs for both 1 4 and XLR plugs that can be used in any combination see diagrams on page 5 It automatically converts unbalanced signals to balanced signals and vice versa This is advantageous when using a long length of unbalanced cable which can pick up interference by converting it to a balanced signal before it reaches the mixer input The Humbuster can also be used as a DI box to connect the unbalanced output of a musical instrument directly to a mixing console s balanced input deal for studio home or stage use the Humbuster is designed with high quality internal components and gold plated XLR connectors for superb noise reduction and flawless signal transfer Instructions 1 Disconnect tum off and remove the power cords of all equipment except for one piece such as th2. 1 4 out TS or TRS on ei lt kopu Humbuster 0000 OOOO her end XLR in to 1 4 TS or TRS out amp kopu Humbuster omr o Gr oar 0066 OOOO 1 4 TS or TRS in to XLR o ut X kopu Humbuster 86800 MODO XLR in to XLR out Specifications Inputs Outputs Frequency Response Distortion Crosstalk Maximum source impedance Minimum load impedance Dimensions H x W x D Weight 2 x 1 4 TRS TS 2 x XLR 2x 1 4 TRS TS 2 x XLR 20 Hz to 70 kHz lt 0 005 THD 1 kHz gt 97 dB KO 10k 0 1 4 x 4 5 x 3 25 3 5 x 11 4 x 8 3 cm 15 2 oz 431 9 be de Thi ins EXI WARRANTY Ol specific legal rights and you may also To au limited solel his product in ermined by o replace it wi horization l Two Year Limited Warranty This KOPUL product is warranted to under normal consumer use for a period ol replacement whichever occurs later 1 the warranty provider h a model of equivalen obtain warranty coverage contac y to repair or replacement at its intended manner and in i quali he original purchaser to be free from defects in materials and workmanship two 2 years from the original purchase date or thirty 30 days after he warranty provider s responsibility with respect to this limited warranty shall the provider s discretion of any product ti at fails during normal use of s
3. intended environment Inoperability of the product or part s shall be the produc and is warranty does not cover damage or defect caused by misuse neglect acciden allation or maintenance EXCEPT AS PROVIDE PRESS WARRANTIES NOR ANY ESS have additional rights that vary from state to stal purchase Shipment of the defective product is at unction FOR A PARTICULAR PURPOSE Th has been discontinued the warranty provider reserves the right alteration abuse improper D HEREIN THE WARRANTY PROVIDER MAKES NEITHER ANY IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO ANY IMPLIED F MERCHANTABILITY OR FITI is warranty provides you with e purchaser s own risk and expen e the Kopul Customer Service Department to obtain a return merchandise RMA number and return the defective product to Kopul along with the RMA number and proof of Se For more information or to arrange service visit www kopulcables com or call Customer Service at 212 594 2353 Product warranty provided by the Gradus Group www gradusgroup com KOPUL is a registered trademark of the Gradus Group 2015 Gradus Group LLC All Rights Reserved G KOPUL A Gradus Group Brand GG1
4. e mixer 2 Connect one piece of equipment at a time making audio connections first then plug in the power cord and tum on the power Listen for noise 8 Continue this process until you have identified the piece of equipment causing the noise 4 Plug in the Humbuster between this piece of equipment and the rest of the system e Example 1 If you hear hum and buzz when plugging a guitar into a guitar amp Plug a guitar into the input of the Humbuster and connect the output of the Humbuster to a guitar amplifier Example 2 If there is hum coming out of powered speakers that are connected to a mixer Plug the mixer outputs into the inputs of the Humbuster and the outputs of the Humbuster into the inputs of powered speakers e Example 3 If you experience hum and noise when connecting the unbalanced output of a computer sound card to a mixer Plug the outputs of the sound card into the inputs of the Humbuster and the outputs of the Humbuster to the inputs of the mixer e Also great for live sound and recording studios long runs of unbalanced cables across a stage DJ mixers home theaters and broadcast and video studios IMPORTANT Do not use the Humbuster between an amplifier and speakers Doing so can damage the equipment Use the Humbuster only on non powered line level signals Use your Humbuster in any of these configurations amp kopu Humbuster EN a 90000 COCO 1 4 in to
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