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21

change/adjustment in the 

Trim Setting. To verify 

a TRIM Setting without 

changing it, press the 

INPUT Control and then 

Rotate the INPUT Con-

trol to select the desired 

Trim Function. After ap-

proximately 5 seconds the 

Display returns to indicate 

the Input Selection and 

Volume Level.

BASS BOOST

The Intensity of the Low 

Frequencies in the music 

can be increased by us-

ing the Bass Boost Trim 

Function. To make an adjustment perform the follow-

ing:

1. Momentarily press the Front Panel INPUT Control 

to enter the TRIM Mode. Then rotate the INPUT 

Control until “BASS BOOST,  0dB” appears on 

the Front Panel Display. Refer to figure 53.

2. Rotate the OUTPUT Control to change the Bass 

Boost, the range of adjustment is from 0dB to 

+12.5 dB in 2.5 dB steps. Refer to figure 54.

or press the appropriate push-button on the Remote 

Control. Refer to figures 50 and 52.

Volume Control

Rotate the Front Panel VOLUME Control or use the 

Up    (

+

) or Down    (

-

) Push-buttons on the Remote 

Control for the desired listening level. Refer to figures 

50 and 52.

Trim Functions Introduction

The MHA150 has various Trim Selections with Ad-

justments. The Trim Functions include Bass Boost, 

Balance, Level (Input Trim), Mono/Stereo, Meter 

Backlight, Display (Information) and Digital Audio 

(Display Information). The Bass Boost, Balance, Level 

(Input Trim), Mono/Stereo, Trim Settings are stored 

in memory independently for each Input Selected; the 

other Trim Settings are the same for all inputs.

The selection and adjustment of all Trim Functions 

may be performed by first momentarily pressing the 

Front Panel INPUT Control. Then rotate the INPUT 

Control to select the desired Trim Function. This is 

followed by rotating the OUTPUT Control to make a 

Power On and Off

The Red LED beside the STANDBY/ON Push-button 

lights to indicate the MHA150 is in Standby mode. 

To switch ON the MHA150, press the STANDBY/ON 

Push-button on the Front Panel or press the      (Power) 

Push-button on the Remote Control. The MHA150 

will go through a brief startup initialization, with the 

Front Panel Display indicating the last used input and 

volume setting. This is followed by the volume setting 

indication starting at zero and then increasing to the 

last used volume setting. Refer to figures 50, 51 and 

52. To switch OFF the MHA150, press the STANDBY/

ON Push-button on the Front Panel or the OFF Push-

button on the Remote Control.

Note: For an explanation of the Remote Control 

Push-button functions, refer to pages 14 and 15.

Source Selection

Rotate the INPUT Control to select the desired input 

How to Operate the MHA150

Figure 50

How to Operate the MHA150

Figure 52

Figure 53

   BASS BOOST

        0dB

Figure 54

   BASS BOOST

     +2.5dB

Figure 51

UNBAL        20%

NORM 8O - 40O

Содержание MHA150

Страница 1: ...McIntosh Laboratory Inc 2 Chambers Street Binghamton New York 13903 2699 Phone 607 723 3512 www mcintoshlabs com MHA150 Headphone Amplifier Owner s Manual...

Страница 2: ...supply cord only the mains plug of the power supply cord shall remain readily operable To completely disconnect this equipment from the a c mains remove the plug from the a c receptacle Si l quipement...

Страница 3: ...ed for you to record that information Serial Number ________________________________ Purchase Date ________________________________ Dealer Name _________________________________ Copyright 2016 by McIn...

Страница 4: ...n additional con nection is for controlling the illumination of the Power Output Meters on McIntosh Power Amplifiers A 3 5mm stereo mini phone plug is used for connection to the Power Control Jacks Ou...

Страница 5: ...plifier clipping and protects your valuable Head phones and Loudspeakers Electronic Switching for Analog Inputs The Preamplifier uses Logic Circuits controlling Elec tromagnetic Switches for reliable...

Страница 6: ...al information on the next page pertaining to install ing the MHA150 into cabinets Rear View of the MHA150 Side View of the MHA150 Front View of the MHA150 9 16 1 4cm 29 32 1 8cm 10 13 16 27 5cm 8 20...

Страница 7: ...Always provide adequate ventilation for your MHA150 Cool operation ensures the longest possible operating life for any electronic instrument Do not install the MHA150 directly above a heat generating...

Страница 8: ...put for connection to a computer Connect the MHA150 power cord to a live AC outlet Refer to infor mation on the back panel of your MHA150 to determine the correct voltage for your unit Main Fuse holde...

Страница 9: ...9 Notes...

Страница 10: ...ith an exter nal Power Amplifier please refer to page 13 Power Control Connections 1 Connect a Control Cable from the MHA150 PWR CTRL Power Control OUT Jack to the Power Control In Jack on the Tuner 2...

Страница 11: ...he correct polarities Refer to General Information Note 7 on page 4 for additional information 5 Connect the MHA150 power cord to an active AC outlet Spade Lug or Wire Connections 6 Connect the Loudsp...

Страница 12: ...using the Power Control 2 connections 1 Connect Audio Cables from the Preamplifier OUTPUT 2 Jacks to the MHA150 Analog Audio UNBAL Jacks Note The Preamplifier Balanced OUTPUT 2 con nected to the MHA1...

Страница 13: ...Connect Audio Cables from the MHA150 PRE AMPlifier OUTPUT Jacks to the External Power Amplifier IN Left and Right Jacks 2 Connect a Control Cable from the MHA150 PWR CNTRL Power Control OUT Jack to t...

Страница 14: ...on contemporary McIntosh Tuners Selects the PREVIOUS 9 Station Preset on contemporary McIntosh Tuners Decreases the volume level Press to activate TRIM Mode Selects the desired INPUT Adjusts or Select...

Страница 15: ...te the TRIM Mode Then use the Directional Push Buttons to select a Trim Mode Function and make changes Directional Push Buttons After having pressed the SELECT Push button press the Left or Right Push...

Страница 16: ...the Sources Volume other Audio Settings Operational Functions and Setup Mode Settings VOLUME Control allows adjustment of the listening level for both channels Also used to activate the HXD and Profi...

Страница 17: ...n with the Front Panel Display indicating the last used input and volume setting This is fol lowed by the volume setting indication starting at zero and then increasing to the last used volume setting...

Страница 18: ...rts flashing Refer to figure 7 The MHA150 functionality is controlled by internal software that is known as Firmware The Version of the Firmware in the MHA150 can be identified at any time by utilizin...

Страница 19: ...e following example the Speaker Size default set ting of LARGE will be changed to SMALL 1 Press and hold the INPUT CONTROL until the Front Panel Display indicates the Model Firmware Version and Serial...

Страница 20: ...the adjustable set tings Setup and Trim Settings to the factory default values perform the following steps 1 Press and hold in the INPUT Control to enter the SETUP MODE Refer to figure 2 on page 18 2...

Страница 21: ...udio Display Information The Bass Boost Balance Level Input Trim Mono Stereo Trim Settings are stored in memory independently for each Input Selected the other Trim Settings are the same for all input...

Страница 22: ...he OUTPUT Control to change the Chan nel Balance the range of adjustment is 50dB to emphasize the Left or Right Channel in 1 dB steps Refer to figures 56 and 57 After approximately 5 seconds the Displ...

Страница 23: ...1 Momentarily press the Front Panel INPUT Control to enter the TRIM Mode Then rotate the INPUT Control until METER LIGHTS On appears on the Front Panel Display Refer to figure 64 2 Rotate the OUTPUT C...

Страница 24: ...e Jack perform the following 1 Momentarily press the Front Panel VOLUME Control to enable the HXD Mode The HXD Icon located above the Headphone Jack will illumi nate Green Refer to figure 71 2 To disa...

Страница 25: ...the Impedance Power HXD and Bass Boost set tings made they will now be assigned to a Profile for easy recall at a later time The PROFILE and VOL UME Controls are used to perform the various Profile Fu...

Страница 26: ...ess and hold in the VOLUME CONTROL until the Front Panel Display indicates SAVE PROFILE Profile Saved Refer to figure 89 15 To exit the Profile Rename Mode momentarily press the VOLUME Control DELETIN...

Страница 27: ...er Note If an Apple Macintosh computer is used with the MHA150 no additional driver is required The McIntosh USB Audio Windows Driver is available for download from the McIntosh Web Site http www mcin...

Страница 28: ...s it is desired to make changes to the default settings 2 The McIntosh HD USB Audio Control Panel displays the current Sampling Rate Bit Rate and Buffer Size for the music streaming from the computer...

Страница 29: ...is higher USB 51 352 8kHz Figure 120 How to Operate the MHA150 con t USB 46 DSD128 Figure 121 USB 51 DSD256 Figure 122 USB 46 44 1kHz Figure 119 rate results in consuming larger amounts of stor age sp...

Страница 30: ...balanced Maximum Input Signal 8V unbalanced 16V balanced Preamplifier Output Impedance 500 ohms Power Guard Less than 2 THD with up to 16dB overdrive at 1 000Hz Voltage Gain 36 5dB Digital Input Samp...

Страница 31: ...on If a shipping carton or any of the interior part s are needed please call or write Customer Service Depart ment of McIntosh Laboratory Refer to page 3 Please see the Part List for the correct part...

Страница 32: ...cts is the policy of McIntosh Laboratory Incorporated who reserve the right to improve design without notice Printed in the U S A McIntosh Laboratory Inc 2 Chambers Street Binghamton NY 13903 www mcin...

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