background image

20

active. Then rotate the INPUT CONTROL until 

the Setup Menu item “POWER MODE,  Enabled” 

appears on the Front Panel Display. Refer to      

figure 17.

2. Rotate the OUTPUT Control until “POWER 

MODE,  Disabled” appears on the Front Panel 

Display. Refer to figure 18.

3. To exit from the Setup Mode, press the INPUT 

CONTROL and the Front Panel Display will revert 

back to its normal display.

The Front Panel IR Sensor used for Remote Control 

Operation can be disabled in the event there is a con-

flict with another McIntosh component located in the 

same room as the MHA150. Refer to “General Infor-

mation, note 6” on page 4 for additional information. 

Disable the Front Panel IR Sensor by performing the 

following steps:

1. Press and hold the INPUT CONTROL until the 

Front Panel Display indicates the Model, Firmware 

Version and Serial Number. Then rotate the IN-

PUT CONTROL and select the Setup Menu item 

“REMOTE CONTROL,  Enabled”. Refer to figure 

19.

2. Rotate the OUTPUT Control until the Front Panel-

Display indicates “REMOTE CONTROL,  Dis-

abled”. Refer to figure 20.

3. To exit from the Setup Mode, press the INPUT 

CONTROL and the Front Panel Display will revert 

back to its normal display.

Setup, con’t

Power Mode, con’t

Figure 17

   POWER MODE

    Enabled

Figure 18

   POWER MODE

    Disabled

Remote Control

Figure 19

 REMOTE CONTROL

    Enabled

Figure 20

 REMOTE CONTROL

    Disabled

Factory Reset

If it becomes desirable to reset all 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. Rotate the INPUT Control until “FACTORY RE-

SET,   (Hold SETUP)” appears on the Information 

Display. Refer to figure 23.

3. Press and hold in the INPUT Control until “FAC-

TORY RESET, In Progress!” appears on the Infor-

mation Display, then release the INPUT Control. 

Refer to figures 24 and 25.

4. Press the Front Panel STAND/BY Push-button to 

switch the MHA150 On.

Figure 25

   FACTORY RESET

    Completed!

Figure 23

   FACTORY RESET

    (Hold SETUP)

 

Figure 24

   FACTORY RESET

    In Progress!

Volume Guard

The MHA150 incorporates a Volume Guard Feature to 

provide Loudspeaker Protection if the Amplifier was 

set to a high listening level the last time it was used. 

When it is switched back ON, the volume listening 

will return to a normal safe level. If desirable, the Vol-

ume Guard Feature may be switched OFF by perform-

ing the following steps:

1. Press and hold the INPUT CONTROL until the 

Front Panel Display indicates the Setup Mode is 

active. Then rotate the INPUT CONTROL until 

the Setup Menu item “VOLUME GUARD,  En-

abled” appears on the Front Panel Display. Refer to  

figure 21.

2. Rotate the OUTPUT Control until “VOLUME 

GUARD,  Disabled” appears on the Front Panel 

Display. Refer to figure 22.

3. To exit from the Setup Mode, press the INPUT 

CONTROL and the Front Panel Display will revert 

back to its normal display.

Figure 21

   VOLUME GUARD

     Enabled

   VOLUME GUARD

     Enabled

Figure 22

   VOLUME GUARD

     Disabled

   VOLUME GUARD

     Disabled

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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