High-Grade Condition – Crown 135MA – 3-Input Commercial Mixer-Amplifier – 35W – 8Ω/70V/100V Outputs – Universal 100–240V

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High-Grade Condition – Crown 135MA – 3-Input Commercial Mixer-Amplifier – 35W – 8Ω/70V/100V Outputs – Universal 100–240V🔹 ConditionUsed Equipment – Good Condition – Operational Tes ting RecommendedThis Crown 135MA commercial mixer-amplifier shows normal cosmetic signs of previous installation and commercial use, including surface marks, light scratches, dust, and wear around the controls.The front control knobs, indicator lights, input controls, master volume control, bass and treble adjustments, rear RCA inputs, Phoenix-style terminal blocks, DIP configuration switches, and IEC power inlet are present.Several external low-voltage audio wires remain attached to the rear preamp-output terminal. These wires are remnants of the previous installation and may be removed or re-terminated during installation.The supplied photos do not show the amplifier powered on or connected to speakers. Therefore, complete operational testing of the inputs, amplifier output, paging priority, telephone output, and controls is recommended before advertising it as fully tested and operational.🔹 DescriptionThe Crown 135MA is a compact commercial mixer-amplifier engineered for paging, background music, announcements, and music-on-hold systems in restaurants, retail stores, offices, warehouses, cafés, schools, hospitality facilities, and other commercial environments.It combines three individually controlled audio inputs with a single 35-watt amplifier output channel, reducing the need for separate mixing and amplification equipment.Input 1 supports a balanced microphone or line-level source through a Phoenix-style terminal connector. Inputs 2 and 3 use stereo RCA connectors that combine stereo sources into mono, making them suitable for music players, streaming devices, tuners, and other background-music sources.The amplifier supports standard 8-ohm speakers as well as distributed 70V and 100V speaker systems. This makes it suitable for both small single-room systems and commercial installations using multiple ceiling or wall-mounted speakers.Priority muting can be activated through VOX voice detection or an external priority switch, allowing announcements from Input 1 to automatically reduce the background-music level. Crown also includes 15V phantom power for compatible microphones, plus master bass and treble controls for final system adjustment.🔹 Electrical SpecificationsInput Voltage: 100–240V ACPhase: Single PhaseFrequency: 50/60 HzPower Consumption: 95WAmplifier Output: 35WOutput Channels: 1Power Type: ElectricPower Supply: Universal internal power supplyPower Connection: Standard IEC inletThe rear panel confirms a universal 100–240V AC, 50/60 Hz, 95W power requirement. Crown specifies a universal power supply with a line-voltage tolerance of approximately +15% and −20%.🔹 Audio Output SpecificationsRated Amplifier Power: 35WLow-Impedance Speaker Output: 8ΩDistributed Speaker Outputs: 70V and 100VOutput Configuration: Single-channel monoPreamp Output: Phoenix-style balanced terminalNominal Line Output Level: 1V into 10 kΩThe 8-ohm, 70V, and 100V output options allow the amplifier to operate with standard low-impedance speakers or commercial distributed-audio speaker systems.🔹 Input ConfigurationInput 1Balanced Phoenix-style connectorSelectable microphone or line-level operationPriority input capabilityVoice-activated VOX mutingExternal priority-contact connectionSelectable 15V phantom powerInput 2Dual RCA unbalanced stereo-summing inputIndependent front-panel volume controlSuitable for background-music sourcesInput 3Dual RCA unbalanced stereo-summing inputIndependent front-panel volume controlSuitable for background-music sourcesTelephone / Music-on-Hold ConnectionDedicated telephone music-on-hold outputSelectable 8Ω or 600Ω operationIndependent telephone-output level adjustmentCrown officially specifies one balanced microphone/line input, two dual-RCA music inputs, telephone output, priority muting, and phantom power.🔹 Audio PerformanceFrequency Response at 1W: 50 Hz–20 kHz, ±1 dBExtended Frequency Response: 19 Hz–34 kHz, +0/−3 dBTotal Harmonic Distortion plus Noise: Less than 0.5% at rated power and 1 kHzTHD+N at 5W: Less than 0.1% at 1 kHzCrosstalk: Approximately −82 dB at 1 kHzPhantom Power: 15V DCSignal-to-Noise RatioMicrophone Input: Greater than 58 dBLine Input: Greater than 60 dBTelephone Input: Greater than 60 dBInputs 2 and 3: Greater than 78 dBInput SensitivityInput 1 – Microphone: 3mVInput 1 – Line: 800mVInputs 2 and 3: 400mVThese audio-performance specifications are published by Crown for the 135MA.🔹 DimensionsWidth: 12.6 inDepth: 9.6 inHeight: 4.2 in without feetApproximate Height with Feet: 4.5 inWeight: Approximately 8.2 lbThe Crown 135MA uses a compact half-rack-style chassis suitable for shelf, tabletop, cabinet, or rack installation with the appropriate optional mounting kit.🔹 ConstructionHeavy-duty black metal chassisBrushed black front control panelCompact commercial installation designFour individual front-panel rotary level controlsThree source-level controlsOne master-volume controlSeparate bass and treble adjustmentsFront-panel signal and clip indicatorsFront-panel power controlRear DIP-switch configuration bankPhoenix-style removable terminal connectorsDual RCA audio inputsStandard IEC power inletVentilated enclosure for heat managementOptional rack-mounting compatibility🔹 Key FeaturesThree independently controlled audio inputsSingle 35W commercial amplifier channelSupports 8Ω speaker systemsSupports 70V distributed speaker systemsSupports 100V distributed speaker systemsBalanced microphone/line inputTwo dual-RCA music inputsAutomatic stereo-to-mono summingPriority muting through VOXPriority muting through an external switchSelectable 15V phantom powerDedicated telephone music-on-hold outputSelectable 8Ω or 600Ω telephone outputIndependent telephone-output level controlPreamp output for system expansionMaster bass and treble controlsFront signal and clip indicatorsUniversal 100–240V power supplyCompact commercial chassisSuitable for continuous installed-audio applicationsCrown recommends this model for installed sound, paging, background music, and music-on-hold applications.🔹 Recommended ApplicationsRestaurants and cafésBars and loungesRetail storesOffice buildingsWarehousesCommercial kitchensHotel public areasReception areasWaiting roomsSchools and training facilitiesMedical and dental officesHouses of worshipConference roomsSmall paging systemsBackground-music systemsMusic-on-hold installationsDistributed ceiling-speaker systems🔹 Certifications and ComplianceCommercial installed-audio designFCC-compliant configurationUniversal power-supply designApplicable safety and conformity information should be confirmed from the complete product data label or the manufacturer’s declaration before making a specific UL, CE, or other certification claim in the final listing.🔹 Manufacturing InformationManufacturer: Crown AudioParent Company: Harman InternationalBrand: CrownModel: 135MASeries: Commercial Audio SeriesEquipment Type: Three-Input Commercial Mixer-AmplifierCountry of Manufacture: ChinaInstallation Type: Tabletop, shelf, cabinet, or optional rack mountingThe rear panel identifies the unit as manufactured in China for Crown, a Harman International company.🔹 IncludedCrown 135MA commercial mixer-amplifierInstalled front control knobsInstalled rear Phoenix-style terminal connectors shown in the photosAttached low-voltage wires shown at the preamp-output connectorUnit sold exactly as photographedIEC power cord is not shown and should be considered not included unless separately confirmed.Microphone, audio-source cables, speakers, and rack-mounting hardware are not included.🔹 Testing Recommended Before ListingConnect the amplifier to the correct AC power cableConfirm that the power indicator illuminatesTest Input 1 in microphone modeTest Input 1 in line-level modeTest Inputs 2 and 3 through the RCA connectorsTest all front input-level controlsTest the master-volume controlTest the bass and treble controlsTest the 8Ω speaker outputTest the 70V speaker output with a compatible speaker systemTest the 100V output only with compatible equipmentVerify the signal and clip indicatorsTest VOX priority mutingTest external priority mutingTest phantom-power operationTest the preamp outputTest the telephone music-on-hold outputInspect and properly terminate all rear wiring🔹 Important NotesUsed commercial audio equipmentNormal cosmetic wear is visibleExternal installation wires remain attached to one terminalPower cord is not visible in the supplied photosComplete operational testing is recommendedRequires compatible speakers and proper output wiringDo not connect standard 8Ω speakers to the 70V or 100V terminalsInstallation by an experienced commercial-audio technician is recommendedSold as-is, where-isNo manufacturer warranty includedShipping calculated at checkoutLocal pickup available Show more