HM-4 Owners Manual

OWNER’S MANUAL

POWER

PHONES 4 PHONES 3 PHONES 2 PHONES 1

INPUT 1 2 3 4 +12V DC 2 HM-4 4-Way Headphone Amplifier

12. 11. 10. 9. 8. 7 6. 5. 4. 3. 2. 1. Important SafetyInstructions do notexpose thisapparatus torain ormoisture. WARNING —To reduce theriskoffire orelectricshock, .

5 of the FCC Rules. Operation ThisdevicecomplieswithPart is 15oftheFCCRules.

be placedontheapparatus. no objectfilledwithliquids,suchas vases orbeerglasses, shall This apparatus shallnotbeexposed todrippingorsplashing,and Do notusethisapparatus nearwater. that produce heat. registers, stoves, orotherapparatus (includingamplifiers) Do notinstall nearanyheatsources suchasradiators, heat Follow allinstructions. Clean only with a dry cloth. Clean onlywithadry Keep theseinstructions. byoneormore ofthefollowing measures: interference tocorrect the equipment offandon,theuserisencouraged totry television reception, whichcanbedeterminedbyturning the toradio or If thisequipmentdoescauseharmfulinterference installation. willnotoccurinaparticular guarantee thatinterference toradio communications. However,interference there isno used inaccordancewiththeinstructions,maycauseharmful can radiate radio frequency energy and,ifnotinstalled and residential installation. Thisequipmentgenerates, uses,and reasonable protection ina against harmfulinterference Theselimitsare designedtoprovide 15 oftheFCCRules. with thelimitsforaClass Bdigital device,pursuanttopart Read theseinstructions. Read CAUTION: manufacturer. Only useattachments/accessories specifiedbythe been dropped. exposed torain ormoisture, doesnotoperate normally, orhas or objectshave fallenintotheapparatus, theapparatus hasbeen as power-supply cordorplugisdamaged,liquidhasbeenspilled required whentheapparatus hasbeendamagedinanyway, such is personnel. Servicing toqualifiedservice allservicing Refer undesired operation. thatmaycause received, includinginterference interference and(2)thisdevicemustacceptany cause harmfulinterference, subject tothefollowing two conditions:(1)thisdevicemaynot with the manufacturer’s instructions. with themanufacturer’s Do notblockanyventilation openings.Install inaccordance Heed allwarnings. operate theequipmentunderFCCrules. approved byLOUD AudioLLC couldvoid theuser'sauthorityto NOTE: HM-4 4-WayHM-4 Headphone Amplifier contact your localcityoffice,waste authority, or your householdwastedisposalservice. will contributetothe effective usageofnatural resources. For more informationaboutwhere you candrop off yourwasteequipmentfor recycling, please to potentiallyhazardoussubstances thatare generally associated withEEE.Atthesametime,your cooperation inthecorrect disposalofthisproduct electronic equipment (EEE).Improper handling ofthistypewastecouldhave apossible negative impact ontheenvironment andhumanhealthdue directive (2012/19/EU)andyour nationallaw. Thisproduct shouldbehandedover toanauthorized collectionsiteforrecycling wasteelectricaland Correct disposalofthisproduct: Thissymbolindicatesthatthisproduct shouldnotbedisposedofwithyour householdwaste,accordingtotheWEEE Thisequipmenthasbeentestedandfoundtocomply technicianforhelp. • Consult thedealeroranexperienced radio /TV different from thattowhichthe receiver isconnected. • Connect theequipmentintoanoutletonacircuit andthereceiver. • Increase theseparation between theequipment orrelocate thereceiving antenna. • Reorient Changesormodificationstothisdevicenot expressly

(2) (1) (2) (1) ATTENTION

15. 14. 13. 16.

the radiator &your body. installed andoperated withminimumdistance 20cmbetween foranuncontrolled environment.forth Thisdeviceshouldbe This devicecomplieswithFCCradiation exposure limitsset compromettre lefonctionnement. radioélectrique subi,mêmesilebrouillage estsusceptibled’en l’utilisateur del’appareil doitacceptertoutbrouillage l’appareil nedoitpasproduire debrouillage, et L’exploitation estautoriséeauxdeuxconditionssuivantes: Canada applicablesauxappareils radio exempts delicence. Le présent appareil estconformeauxCNRd’Industrie thatmaycauseundesired operation ofthedevice. interference including this devicemustacceptanyinterference, and this devicemaynotcauseinterference, Operation issubjecttothefollowing two conditions: standard(s). Canadalicence-exempt RSSThis devicecomplieswithIndustry regulations of the Canadian Department ofCommunications. regulations oftheCanadianDepartment from digital apparatus assetoutintheradio interference (whichever isapplicable)limitsforradio noiseemissions This apparatus doesnotexceed theClass A/Class B forth here: forth permanent hearingloss ifexposure isinexcess ofthelimitsset be worn whenoperating theequipmentinordertoprevent Ear plugsorprotectors intheearcanalsorover theearsmust use hearingprotectors whiletheequipmentisinoperation. to equipmentcapableofproducing highsoundpressure levels pressure levels, itisrecommended thatallpersonsexposed ensure against potentiallydangerous exposure tohighsound permissible limitscouldresult insomehearingloss. To any exposure inexcessAccording toOSHA, ofthese level exposures shown inthefollowing chart. Administration (OSHA)hasspecifiedthepermissible noise time. TheU.S. Government’s OccupationalSafety andHealth hearing ifexposed tosufficientlyintensenoiseforaperiod of willlosesome noise-induced hearingloss, butnearlyeveryone considerably insusceptibilityto hearing loss. Individualsvary Exposure toextremely highnoiselevels maycausepermanent radioélectriques dépassant las limites applicables aux aux applicables limites las dépassant radioélectriques appareils numériques de class A/de class B (selon le cas) cas) le (selon B class A/de class de numériques appareils prescrites dans le réglement sur le brouillage radioélectrique radioélectrique brouillage le sur réglement le dans prescrites édicté par les ministere des communications du Canada. du communications des ministere les par édicté 0.25 orless 0.5 1 1.5 2 3 4 6 8 day inhours Duration, per — Le présent appareil numérique n’émet pas de bruits bruits de pas n’émet numérique appareil présent Le — Slow Response Sound Level dBA, 115 110 105 102 100 97 95 92 90 Loudest parts atarock concert Loudest parts screaming atTroyRyan aboutdeadlines Very loudclassical music Subway Train Duo insmallclub Typical Example

Owner’s Manual 3

Owner’s Manual Owner’s Like us Like us Follow our dang videos Watch Never listen to loud music for prolonged periods. listen to loud music for prolonged Never Instructions on page 2 for Please see the Safety information on hearing protection. and packing materials! the shipping boxes Save hamster Besides, your may need them someday. You playing in them and jumping out at you will love Remember like you to pretend unexpectedly. surprised! are in a safe place. sales receipt your Save Push the AC adapter securely into the HM-4’s connector into the HM-4’s securely adapter Push the AC 4-Way Headphone Amplifier quickly. 4-Way device to the input jack computer or other audio of the HM-4. jack(s) of the HM-4. The HM-4 may outlet. and plug the other end into an AC as indicated near the voltage accept the appropriate The HM-4 when will turn on automatically connector. be during normal use. would • • • The ultra-compact HM-4 4-Way Headphone Amplifier Headphone Amplifier HM-4The ultra-compact 4-Way set up the HM-4 steps will help you The following gear. knobs on all connected all level down 1. Turn the mixer, the output jack of a cable from 2. Connect to the headphone output headphones stereo 3. Connect 4. of the input is the same as it volume that the 5. Be sure knob(s) to a comfortable the phones raise listening 6. Slowly

features a 1/4" stereo input and four 1/4" headphone outputs four 1/4" headphone input and stereo a 1/4" features at or even Perfect for studios controls. level with individual to listen together. up to four people want home when connected. Things to Remember Getting Started Introduction level. 7 7 4 2 3 3 3 3 3 3 5 5 5 5 5 6 8 9 This icon marks information that is critically your important or unique to the HM-4. For them. and remember good, read own

Share a single stereo source with up to four pairs source a single stereo Share of headphones for each output control Individual level supply via the included power Powered construction Built-Like-A-Tank™

1. Power Connector and LED...... Connector 1. Power 2. 1/4" Line Input...... Jacks...... 3. 1/4" Headphone Output ...... Knobs 4. Phones Level HM-4 Dimensions...... HM-4...... Block Diagram After this introduction, a getting started this introduction, guide will help you After • • • •

get things set up fast. The hookup diagram shows a typical shows The hookup diagram get things set up fast. setup.

How to Use This Manual to Use How Features Important Safety Instructions ...... Important Safety ...... Contents ...... Features Manual...... This Use To How ...... Introduction Getting Started...... Remember...... Things To ...... Hookup Diagram ...... Features and Rear Panel HM-4: Front Appendix A: Service Information...... Information...... Appendix B: Technical ...... Limited Warranty

HM-4 4-WayHM-4 Headphone Amplifier Start by turning the down the main output level on the computer and all four phones knobs of the HM-4. HM-4. the of knobs phones four all and computer the on level output main the down the turning by Start The HM-4 4-Way Headphone Amplifier is an easy, convenient way to combine multiple listeners to the same same the to listeners multiple combine to way convenient easy, an is Amplifier Headphone 4-Way HM-4 The signal. The hookup couldn’t be more straightforward. more be couldn’t hookup The signal. Note: While a computer may be the most common use, you could also connect a mixer or just about about just or mixer a connect also could you use, common most the be may computer a While Note: any other audio device to the input jack of the HM-4. The possibilities are not endless, but it’s close! it’s but endless, not are possibilities The HM-4. slowly the peasy! of by up Easy jack jack. Finish input knobs. input the 1-4. to 1/4" phones jacks device HM-4’s HM-4’s phones the audio and to 1/4" other the level jack to any output output headphones computer’s computer’s stereo the the of of from pairs level cable the four a to up raising connect to connect want Now will you Next, PC /MAC Typical Setup HM-4 POWER INPUT PHONES 1 1 PHONES 2 4 – WAY HEADPHONE AMPLIFIER WAY HEADPHONE 2 PHONES 3 3 4 PHONES 4 +12V DC

Owner’s Manual 5 3 5 6 12 TIME 1 TIP +12V DC 9 TIP SLEEVE PHONES 4 4 Owner’s Manual Owner’s SLEEVE 3 PHONES 3 standard conventions: standard SLEEVE 3 4 TIP 2 WAY HEADPHONEWAY AMPLIFIER – 4 PHONES 2 HM-4 Top Panel HM-4 Rear Panel 1 WARNING: The headphone amp is loud, The WARNING: and can cause permanent hearing damage. may be painfully intermediate levels Even FALL PHONES 1 WINTER 2 Tip = Left channel Tip RingRight = channel ground = Common Sleeve INPUT POWER SEASON SPRING SUMMER 1 These knobs are used to adjust the season and time. These knobs are These knobs are used to adjust the volumes at the used to adjust the volumes These knobs are These 1/4" TRS connectors supply the output for These 1/4" TRS connectors supply the The phones output follows 5 loud with some headphones. BE CAREFUL! Always before all the way down controls turn the phones level connecting headphones or doing anything new that volume. Then turn it up may affect the headphone listen carefully. as you slowly 5. Season and Time Knobs 5. Season and Time 4. Phones Level Knobs 4. Phones Level 3. 1/4" Headphone Output Jacks 3. 1/4" Headphone Output Unfortunately, since this is an analog device, you will you since this is an analog device, Unfortunately, working currently are We to set these accordingly. have the season and represent which will version on a digital tuned! Stay and automatically. time accurately phones output from minimum to maximum gain. phones output from up to four pairs of stereo headphones. The volume The volume headphones. up to four pairs of stereo top knobs on the with the phones level is controlled panel. TIP RING TIP SLEEVE RING SLEEVE SLEEVE TIP RING NEVER connect the output of an amplifier input jack. This to the HM-4’s directly could damage the input circuitry! HM-4s varying feature connectors power power your Therefore, based on country. may not) look different connector may (or Only use the factory-authorized power the HM-4.supply that came with

Sleeve = Shield Sleeve = Hot (+) Tip Sleeve = Shield Sleeve = Hot (+) Tip Ring (–) Cold =

Power Connector and LED and Connector Power

Unbalanced Mono Wiring: 1/4" TS To connect unbalanced lines to these inputs, use To

This input may accept 1/4" line-level signals driven signals driven This input may accept 1/4" line-level connect balanced lines to these inputs, use To 1/4" TRS Balanced Mono Wiring: This connection is where to connect the supplied AC AC connect the supplied to is where This connection

2. 1/4" Line Input 1. a 1/4" mono (TS) phone plug, wired as follows: phone plug, wired a 1/4" mono (TS) by balanced or unbalanced sources. (TRS)a 1/4" Tip-Ring-Sleeve plug. “TRS” for stands connection points available the three Tip-Ring-Sleeve, 1/4" or balanced phone jack or plug. TRS on a stereo are used for balanced signals and jacks and plugs are as follows: wired

adapter to provide power to the HM-4. to the power provide adapter to the AC Connect into plug the other end then the HM-4adapter to first, The HM-4 will outlet. AC rated and properly a suitable power connected and the when turn on automatically LED will illuminate. to the right. in the illustration than the one displayed HM-4 4-Way Headphone Amplifier: Front and Rear Panel Features Panel Rear and Front Amplifier: Headphone HM-4 4-Way 6 HM-4 4-Way Headphone Amplifier Poor sound No sound No power Troubleshooting ServiceInformation Appendix A:

with your HM-4 4-Waywith your HM-4 HeadphoneAmplifier. You mayfindtheanswer tothe problem withouthavingtopart of usefulinformationsuchasFAQs andotherdocumentation. our website (www.mackie.com/support) where you willfindlots sectionof do your besttoconfirmtheproblem. Visit theSupport problem, pleasecheckoutthefollowing troubleshooting tipsand HM-4 4-WayHM-4 Headphone Amplifier • • • • • • • • If you think your HM-4 4-WayIf you thinkyour HM-4 HeadphoneAmplifierhasa Is thepower LEDonthefront panelilluminated? andAC outlet.to boththeHM-4 the includedpower adapterissecurely fastened Our favorite question:Isitpluggedin?Makesure are properly adjusted. Verify thatallthephoneslevel knobsontheHM-4 Are thephoneslevel knobsturnedallthewaydown? Is thelevel knobfortheinputsource turnedalltheway down? Verify thatallthevolume controls inthesystem working? that themixer isreceiving asignal. are properly adjusted.Look atthelevel metertoensure MakesureIs thesignalsource theconnecting cables are ingoodrepair andsecurely connectedatboth Make sure themixer doesnothave amuteonor console isturnedupsuffciently. ends. Makesure theoutputlevel control onthemixing Be sure allconnectionsare secure. all level controls are setproperly. overdriving astage inthesignalchain.Verify that Makesure thatyou’reIs itloudanddistorted? not the offendingswitch. make sure thelevel isturneddown before disengaging processor loopengaged. Ifyou findsomethinglikethis, Repair Hum Date ofpurchase: Purchased at: make dadproud, etc.) (i.e., insurance claims,techsupport,return authorization, Please writetheserialnumbershere forfuture reference area. centerislocatedinyour service the nearest factory-authorized Pacific Time), to explain theproblem. They willtell you where business hours, (normal at1-800-898-3211 department Support local dealersordistributors. livingoutsidetheUnitedStates maybeobtainedHM-4s through www.mackie.com/support/service-locator. for Service center.service To center, locatethenearest service visit on page9. If you donothave access toourwebsite, pleasecallourTech isavailable atafactory-authorized Non-warranty service For refer tothewarranty information warranty service, • • ground should be as short aspossible. ground shouldbeasshort The distance between theoutletsandcommon cords intooutletswhichshare acommonground. Whenever possible, plugalltheaudioequipment’s line for thebestnoiserejection. Use balancedconnectionsthroughout your system Owner’s Manual 7 2.0 in / 51 mm 0.5 lb / 0.2 kg 2.3 in / 58 mm 4.3 in / 109 mm Owner’s Manual Owner’s registered trademarks trademarks registered products better by incorporating new better by incorporating products 4.3 in / 09 mm Physical Properties Height: Disclaimer our always striving to make are Since we reserve and manufacturing methods, we materials, components, and improved specifications at any time without notice. the right to change these LOUD Audio, LLC. of trademark The “Runningregistered is a figure Man” or trademarks names mentioned are All other brand Width: Width: Depth: Weight: acknowledged. hereby holders, and are of their respective Audio, LLC ©2018 LOUD All Rights Reserved. +22 dB +12V DC 2.0 in 2.3 in 51 mm 58 mm Top power on/off power Top <220 mA, maximum 4x Rotating Phones Knobs each channel, unbalanced each channel, unbalanced each channel, unbalanced 47 10 k stereo 1/4" phono, unbalanced, Female 4x Female 1/4" phono, unbalanced, stereo 1/4" phono, unbalanced, 4x Female 0.5 lb 0.2 kg WEIGHT

HM-4 4-Way Headphone Amplifier Dimensions HM-4 4-Way

Draw Current Features Safety Display LEDs

Power Requirements Power

Input Impedance Input / Output Input Type Maximum Level (1/4"Maximum Level input) HM-4 4-Way Headphone Amplifier Specifications Amplifier Headphone HM-4 4-Way Audio Performance Appendix B: Technical Information Technical B: Appendix Output Type Output Impedance Control Level 8 HM-4 4-Way Headphone Amplifier HM-4 4-WayHM-4 Headphone AmplifierBlockDiagram P I N H P O U N T E HM-4 4-WayHM-4 Headphone Amplifier

J A C K C C A A P P O O O O U U U U T T T T P P P P U U U U T T T T

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L L L L L L I I L L I I N N I N N I I I N N L E N N L E L L E E L L E LA LA

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A A A A A A A

A A A

A M A A M M M M M M M P P P P P P P P F F F F F F F F I I I I X I I X I I X X X X X X E E E E E E E E D D D D D D D D

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R R R R R E E E E E E E E S S S S S S S S I I I I S I I S I I S S S S T S S T T T T T T T ANC A ANC ANC ANC ANC ANC ANC N C E E E E E E E E P P P P HONE HONE HONE HONE

J J J A A A A C C C C K K K K H H H H E E E E ADP A ADP ADP D P HONE H HONE HONE O N E Owner’s Manual 9

Owner’s Manual Owner’s

Need help with the HM-4?Need Please keep your sales receipt in a safe place. sales receipt your Please keep

• Visit www.mackie.com/support to find: FAQs, manuals, addendums, and other documents. FAQs, to find: www.mackie.com/support • Visit • Email us at: www.mackie.com/support-contact 1-800-898-3211 to speak with one of our splendid technical support chaps • Telephone Time). hours, Pacific normal business Friday, through (Monday

purchased in the United States or Canada through a LOUD-authorized reseller or dealer. The Product Warranty will not extend will not extend Warranty The Product dealer. or reseller a LOUD-authorized or Canada through States in the United purchased “you” or “your”). “Customer,” (hereinafter, of the product original purchaser other than the to anyone local market. by the distributor in your provided coverage warranty and information on any distributor, or its authorized service then LOUD representative fails to conform to the warranty If the product Period. during the Warranty notice of the that Customer gives provided any such nonconforming product, or replace repair will at its option, either technical support or by calling LOUD at: www.mackie.com to the Company Period noncompliance within the Warranty weekends excluding Time, hours Pacific business and Canada) during normal in the U.S. at 1.800.898.3211 (toll-free will need it You as evidence of the date of purchase. the original dated sales receipt holidays. Please retain or LOUD service. any warranty to obtain and Customer related LOUD between and supersedes any and all prior agreements agreement, constitutes the entire Warranty Product of this of any of the provisions modification or waiver No amendment, to the subject matter hereof. forth set unless will be valid in a written instrument signed by the party bound thereby. to be This Limited Product Warranty (“Product Warranty”) is provided by LOUD Audio, LLC (“LOUD”) and is applicable to products and is applicable to products (“LOUD”) Audio, LLC by LOUD is provided Warranty”) (“Product Warranty This Limited Product your local information for to find contact visit www.mackie.com or Canada, please outside the U.S. purchased products For use under normal and workmanship defects in materials from will be free to Customer that the product warrants LOUD please visit www.mackie.com. for this product, Warranty of the as the specific duration full terms and conditions, as well For at www.mackie.com and the terms and conditions located or receipt, invoice together with your Warranty, The Product

Limited Warranty Limited 16220 Wood-Red Road NE Woodinville, WA 98072 • USA Phone: 425.487.4333 Toll-free: 800.898.3211 Fax: 425.487.4337 www.mackie.com