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6

LINE INPUT JACK (18)

For use with line level signal or compatible high Z microphones equipped with a 1/4" phone plug.

NOTE: 

These input jacks (17 & 18) are typical of each channel. It is possible to use both the mic and line inputs

on a single channel simultaneously. It is, however, unlikely that the gain matching of the mic and line will allow
this hookup to be useful. This practice is not recommended.

PHANTOM POWER ON/OFF (19)

This switch selects phantom power "ON" or "OFF" for all channels. Phantom power is on when the switch is in
the in position and off when the switch is in the out position. This switch should be activated for use with con-
denser-type microphones. Phantom voltage is +48 V DC on pins 2 and 3 referenced to pin 1.

MAIN OUTPUT (20)

This 1/4" jack provides a signal from the main system mix before the graphic equalizer. Used primarily to feed
an auxiliary amplifier/speaker system. (See wiring diagram).

MONITOR OUTPUT (21)

This 1/4" jack provides a signal from the MONITOR mix for an external monitor amplifier/speaker system. The
level is determined by the channel monitor and master monitor controls.

AUX OUTPUT (22)

This 1/4" jack provides a signal from the AUX mix for external effects or signal-processing equipment. This
output can also be used for other purposes if external effects are not required. These include building a separate
mix for recording or broadcasting.

GRAPHIC INPUT (23)

This 1/4" jack provides an input to the internal graphic equalizer/power amp. This is a switching jack:  a signal
inserted here interrupts the normal signal path from the main bus into the equalizer.

OPERATION NOTE:

 This jack permits the equalizer to be switched away from its normal input and accept an

external signal to be equalized, such as the monitor output.

GRAPHIC OUT (24)

This 1/4" jack provides access to the output of the internal graphic equalizer. A plug inserted into this jack does
not switch the EQ output away from the input to the power amplifier.

AUXILIARY INPUT (25)

This 1/4" jack provides access to an input to the main mixing bus for patching in returns from external effects
devices, extra mixing channels, etc. Using this jack defeats both tape in jacks.

POWER AMP INPUT (26)

This 1/4" jack provides access to connect external line-level signals to the power amplifier.

OPERATION NOTE:

 This jack permits the internal power amplifier to be switched away from its normal input

and to accept external line-level signals.

AC POWER AND POWER AMPLIFIER OUTPUT SECTION:

FUSE (27)

The fuse is located within the cap of the fuseholder. If the fuse should fail, IT MUST BE REPLACED WITH
THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO THE EQUIPMENT AND TO PRE-

Содержание IRM 8150

Страница 1: ...1 IRM 8150 Powered Mixer ...

Страница 2: ...d computer controlled all faults analyzed and corrected Q A procedures Each channel features front panel main and monitor level controls as well as high mid low equalization and AUX send controls Every input channel has a studio quality low imped ance XLR type input microphone input as well as a 1 4 line input Switchable 48 V phantom power is provided The unit features a 150 watt power amplifier I...

Страница 3: ...rols the amount of signal from a particular channel in the monitor mix This signal is routed to the Mon control in the master section LOW EQ 3 Controls the channel low EQ level An active tone control shelving type 12 dB that varies the low frequency range MID EQ 4 Controls the channel mid EQ level An active tone control peak notch 12 dB that adjusts the mid frequency range HIGH EQ 5 Controls the c...

Страница 4: ...vel of the main system The signal from this control is available at the main output 20 Under normal conditions this signal is also internally patched through the graphic EQ and power amplifier so that this control sets the volume of the speakers connected to the output barrier strip 30 Maximum master signal level is obtained by rotating this control fully clockwise Minimum master signal level cut ...

Страница 5: ... in jack which can affect the operational level or sonic quality of the system and cause feedback TAPE IN RCA TYPE JACKS 15 These two jacks provide a paralleled input for proper mono mixing of stereo tape deck outputs For monaural tape sources use either jack TAPE OUT RCA TYPE JACKS 16 These two jacks provide the same monaural signal to be supplied to the left and right inputs of a stereo tape dec...

Страница 6: ...s output can also be used for other purposes if external effects are not required These include building a separate mix for recording or broadcasting GRAPHIC INPUT 23 This 1 4 jack provides an input to the internal graphic equalizer power amp This is a switching jack a signal inserted here interrupts the normal signal path from the main bus into the equalizer OPERATION NOTE This jack permits the e...

Страница 7: ... exist when the unit is operated with the proper grounded receptacles OUTPUT BARRIER STRIP 30 Provided for connection of external speakers Power output is 150 watts RMS This is available as a direct output from the power amplifier or as transformer isolated outputs Transformer outputs can be used for an 8 ohm 35 V loudspeaker or used to drive 25 V or 70 V speaker systems Only one output should be ...

Страница 8: ... flat 2 dB Mid EQ 12 dB 600 Hz minimum center detent flat 2 dB Low EQ 12 dB 50 Hz minimum Center detent flat 2 dB Nominal Channel Gain Low Z 20 dB Line 0 dB Minimum Channel Gain Low Z 69 dB Line 89 dB Maximum Channel Gain Low Z 40 dB Line 20 dB Nominal Input Level Low Z 20 dBV Line 0 dBV Minimum Input Level Low Z 40 dBV Line 20 dBV Maximum Input Level Low Z 6 dB Line 26 dB Phantom Power 48 V DC GR...

Страница 9: ... dBV Tape Input Level Nom 4 dBV Max 11 dBV Min 10 dBV POWER AMP SECTION Frequency Response 0 1 dB 20 Hz to 20 kHz Rated Power direct out 0 1 dB 50 Hz to 20 kHz Rated Power XFMR outputs Rated Power Direct Out 150 watts RMS 4 ohms XFMR Outputs 150 watts RMS 8 ohms 150 watts RMS 25 V 4 ohms 150 watts RMS 70 V 33 ohms 1 V RMS into 600 ohms Intermodulation Distortion Less than 0 1 10 mW to rated power ...

Страница 10: ...r Transformer Output to 8Ω Speaker Note Jumper must be in place COM 8 Ω 25V 70V NC 8 Ω HI XFMR 4 Ω GND LO Balanced 600Ω Jumper Installed XFMR 4 Ω GND LO Balanced 600Ω Jumper Installed HI To Booster Amplifier etc Balanced Output Connection Note Jumper must be in place ...

Страница 11: ...11 XFMR 4 Ω GND LO HI Balanced 600Ω 8 Ω Direct Output to Multiple Speakers in Parallel Total Impedance 4Ω 8 Ω ...

Страница 12: ...12 ...

Страница 13: ...EADROOM MAIN MONITOR TAPE AUX 18 dBV NOMINAL AUX INPUT LEVEL 0 dBV NOMINAL FLAT CHANNEL EQ 12 dBV CUT 12 dBV BOOST 600 Hz MAIN MON TAPE AUX OUTPUTS 18 dBV MAXIMUM GRAPHIC INPUT OUTPUT LEVELS 19 dBV MAXIMUM GRAPHIC INPUT OUTPUT LEVELS 0 dBV NOMINAL FLAT GRAPHIC EQ 12 dBV 6 dBV AUX INPUT LEVEL 7 dBV MAXIMUM AUX INPUT LEVEL 15 dBV MINIMUM TAPE INPUT LEVEL 11 dBV MAXIMUM TAPE INPUT LEVEL 4 dBV NOMINAL...

Страница 14: ...RRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE UNDER NO CIRCUMSTANCES WILL PEAVEY BE LIABLE FOR ANY LOST PROFITS LOST SAVINGS INCIDENTAL DAMAGES OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PRODUCT EVEN IF PEAVEY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE THIS LIMITED WARRANTY IS THE ONLY EXPRESSED WARRANTY ON THIS PRODUCT AND NO OTHER STATEMENT REP...

Страница 15: ...old cleaner if necessary Disconnect unit from power supply before cleaning 14 Care should be taken so that objects do not fall and liquids are not spilled into the unit through the ventilation holes or any other openings 15 This unit should be checked by a qualified service technician if a The power supply cord or plug has been damaged b Anything has fallen or been spilled into the unit c The unit...

Страница 16: ...ations subject to change without notice A Division of Peavey Electronics Corporation 711 A Street Meridian MS 39302 2898 U S A 601 483 5376 Telex 504115 Fax 486 1278 1994 80302192 Printed in U S A 10 94 ARCHITECTURAL ACOUSTICS ...

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