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2-10

2-11

2-12

2-14

2-17

AC Power
Chassis Ground

Speaker Connections
Paging Connections
Paging Inputs

Balanced Sources

Unbalanced Sources

Zone Keying

Paging Mic/Line Switch
Mic Gain Control (See Gain Staging)
Music Connections

Unbalanced Inputs
Balanced Inputs

Summing Stereo Pairs

Music Adjustments
AUX Inputs
Gain Staging

Control Range
Gain Staging Adjustments
Gain Staging the Paging Levels

2-13

Gain Staging the Music Levels

Gain Staging with Remote Control.
AUX Level

Music Muting Trims
PowerLimit Control

Limiting Overall Level

2-15

Protecting Speakers from Excess Power

2-l 6

Preventing Output Clipping

25 Volt Systems

Pre-Out/Amp In

Insertion of signal processing

2-17

Routing of signal to other amplifiers

Amplifier Active Balanced Inputs

Using Amplifier Active Balanced Inputs
Inserting Signal Processing
Mixing with Active Balanced Inputs

Switched AC Outlet

+/-15V Power Supply Taps

Section Three....Installation and Set-up

3-1

Shelf Mounting

Rack Mounting
Front Panel Set-up

Knob Lock-out Plug
Site Specific Labels

3 - 2

Music Source Selector Knob Rotation Limit

Remote Control

Hook-up
Set-up

3 - 3

Operation
Building Your Own Remote Control Panel

Stereo Operation

Содержание MPS 2300

Страница 1: ...1605 NW State Street Lehi Utah 84043 801 766 7600 FAX 801 766 8282 Interenet www ivie com Operation and Owners Manual for the Printed in U S A ...

Страница 2: ...ignment Indicators Mono Stereo Linking Switch located on bottom 2 4 Rear Panel Controls and Features 2 4 Paging Section Mic Gain Control Mic AGC Voice EQ Mic Input Sensitivity Switch Active Balanced Mic Input Mic Zone Keys 2 5 Music Section Music Gain Control Music Treble and Bass EQ Controls Input Sensitivity Switches Unbalanced Music Inputs Active Balanced Inputs Pre Amp Out Power Amp In Muting ...

Страница 3: ...g Trims PowerLimit Control Limiting Overall Level 2 15 Protecting Speakers from Excess Power 2 l 6 Preventing Output Clipping 25 Volt Systems Pre Out Amp In Insertion of signal processing 2 17 Routing of signal to other amplifiers Amplifier Active Balanced Inputs Using Amplifier Active Balanced Inputs Inserting Signal Processing Mixing with Active Balanced Inputs Switched AC Outlet 15V Power Suppl...

Страница 4: ...nd 4 3 Weak and Distorted Sound Sound Cuts In and Out Sound has Bad Tone Lacks Power Unwanted Noise Hum Buzz 4 4 Hiss Crackles Radio Interference Section Five Maintenance and Service 5 1 Cleaning Dust Removal User Maintenance Obtaining Service Section Six Schematics and Drawings 6 1 Specifications Flow Chart Schematics Remote Schematic Rear Panel Knob and Switch Setting Drawing Log Front Panel Kno...

Страница 5: ...viduals installing this product we urge you to read the entire manual Set up instructions are contained in Section Two Basic Set up Instructions All users should read Section Two Unpacking and Inspection and important Precautions lvie Technologies warrantees all Series Two products to be free from defective material and or workmanship for a period of three years from date of sale lvie will replace...

Страница 6: ...ctive balanced inputs on Mic channels and Music channels 1 and 2 l Pre out Amp in patch points and separate Aux inputs for each zone l Direct 8 ohm 70V outputs improve damping and lower distortion l Mono Stereo linking switch l 15V power supply taps to power outboard signal processing l Switched AC accessory outlet l Delayed Turn on off and DC Fault speaker protection The mixer re amp has 2 Mic 4 ...

Страница 7: ...istortion and is protected from shorts mis matched loads and thermal over temp Speakers are protected from DC fault and the PowerLimit circuit prevents clipping protects speakers from excess power and or limits overall level to a preset maximum The MPS 2300 is designed to provide years of trouble free performance Quality components and contemporary high performance circuits assure optimum performa...

Страница 8: ...DUCT and voids the warranty l Start with the Master Volume controls all the way off Turn the controls up gradually until normal operation is verified l Never connect speaker barriers from different channels together or the same speaker to more than one channel l Do not connect speaker barriers to chassis or signal ground l Keep speaker wiring separate from input wiring l Always connect speakers wi...

Страница 9: ...factory for service information and locations Front Panel Controls and Indicators MUSIC PAGING SYSTEM MASTER CONTROLS r 1 r I TREBLE TREBLE BASS BASS POWER 0 MASTER VOLUME MASTER v o l u m e nA 0 0 1 0 1 0 ON OFF ZONE A ZONE B Power Switch Power Switch controls entire unit including outlet and 15V power supply taps Master Volumes A B Master Volumes A B are the gain controls for each power amp The ...

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Страница 11: ...on each control to provide up to 30 dB of attenuation Mic Input Signal Presence and Assignment Indicators monitor performance and operation and simplify set up and trouble shooting Yellow signal presence LEDs monitor each of the two Mic channels The indicators flicker in proportion to the signal present at the input A set of green LEDs indicate assignment of an input to either or both Zones Mono S...

Страница 12: ... sources with 10 dB of boost or cut at 100 Hz and 10 KHz Center detents mark the flat position Treble and Bass EQ Controls Input Sensitivity Switches select 0 1 V or 1 V input levels to Input Sensitivity accept a wide variety of music sources Switches Unbalanced Music Inputs with phono connectors are provided for each music channel Unbalanced Music Inputs Active Balanced Inputs with barrier connec...

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Страница 16: ...to chassis ground For safety reasons do not remove the ground pin on the AC cord Electronic balanced inputs are provided for hum rejection if needed Use balanced input cables and ground lift strap if necessary to avoid hum and interference Speaker connections must be made in conjunction with setting the speaker voltage switch See diagram for proper hook up Make certain power is off during hook up ...

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Страница 18: ...d to the output between pages Zone Keying Most mics will use the high gain Mic position Telephone sources and amplified mics may use the Line position For telephone hook up see Section 3 Paging Mic Line Switch Mic Gain Control See Gain Staging below Mic Gain Control All Music Inputs have phono plugs for unbalanced sources Music Inputs 1 and 2 have barrier strip balanced inputs Start with Channel 1...

Страница 19: ...ging separately Pre set controls can be locked out and site specific labels used to clearly identify the remaining controls The installer s goal is to pre set the rear panel and locked out front panel controls so that the remaining controls operate over a well controlled range with the center detent being nominal Since there are three controls affecting the gain of any signal two front panel and o...

Страница 20: ...now be set Section Two Music Muting Trims Gain Staging the Music Levels Remote Faders only decrease volume from the levels established by each Zone s Music Volume and Paging Volume controls Set these controls for the maximum desired volume The user will then have Remote volume control over a 30 dB range Check Remote Fader positions if gain seems low or premature clipping loss of headroom occurs du...

Страница 21: ...o much limiting will flatten the natural dynamics of music and voice and cause excessive pumping or modulation of the level by the bass material present in the music You cannot hurt anything by turning the control to maximum but it may not sound good Limiting Overall Level Method One n o t using PowerLimit 1 Put the Master and or Music and Page volumes on maximum 2 Adjust the input gains so that t...

Страница 22: ...it control can be used to control maximum Protecting Speakers from Excess Power power delivered to the load Since the PowerLimit circuit monitors output voltage it will be of primary benefit when used to protect 4 8 ohm loads from excess power Speakers in 70V systems are tapped for the appropriate wattage To use the PowerLimit control to protect 4 8 ohm speakers from excess power 1 For 8 ohm speak...

Страница 23: ...ase the Master Volume until the Clip LED on rear of the affected channel lights 3 Dial in counter clockwise just enough limiting to extinguish the LED 4 Increase the volume a little more If the LED lights again dial in just enough limiting to put it out 5 Repeat with the other zone Note the 100 setting on the PowerLimit control should be a very close first setting Output voltage can be limited to ...

Страница 24: ... be mixed through the active balanced input Leave the Pre out Amp in jumper in place unless signal processing is used See above Remove the shorting link on the amplifier Input Connect the externally mixed input between Sig Gnd and Input The internal pre amp signal goes to the input This mixes the external source out of phase with the internal pre amp This is not a problem when mixing uncorrellated...

Страница 25: ...ies MPS 2300 power amplifiers have turn on turn off muting to block signals during these intervals Care should be taken when connecting pre amp output or DC powered accessories to non lvie amplifiers which lack turn on turn off muting ...

Страница 26: ... Lock out Plug can be used to replace any front panel control knob Remove knobs by pulling straight out using padded pliers if necessary Replace with Lock out Plugs for these situations Lock out Paae and Music Volumes and use Master Volumes to change overall volume keeping page and music levels at the same relative levels Lock out Master Volume and use Page and Music Volumes to change music and pa...

Страница 27: ...unshielded wires Music and or Page Levels can be reduced up to 30 dB using a 10K ohm pot to ground Attenuation starts at 9K ohm Since standard 10K ohm pots have a 25 tolerance the lvie remote uses a 20K ohm pot with parallel trimmer to obtain exactly 1 OK ohm Music Sources 1 2 3 4 are selected by switching in 6 8K 4 3K 2 2K 820 ohm resistors to ground Music Sources Off is achieved by switching to ...

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Страница 29: ... actuated on position two Use rear panel Gain and EQ to balance Left and Right Inputs 1 2 and 3 4 7 Wire the mic key to both zones if paging is desired on both right and left channels Operation Stereo Remote Hook up 1 Two stereo sources may be selected using the first two positions of the Zone A Music Source Assignment Selector 2 The volume controls work independently Changing the level is accompl...

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Страница 31: ...itch on and meters illuminated Check Master Volume control make sure it is at the proper setting Check meters while selecting a source which has an input indicator flashing Meters illuminated but input indicators not flashinq Problem may be with source equipment or connections See below If meters are active Check speaker connections and speakers If no meter action Check Pre Out Amp In jumpers or e...

Страница 32: ...e to an active input restores sound then the problem is in the remote or remote wiring connections Music but No Page The following guidelines illustrate how to use the front panel indicators to diagnose absence of paging function We will use the yellow Mic Input Signal and the green Mic Assignment LED s to determine the problem Key the Mic and attempt to page while watching the LED s Mic lnout Sig...

Страница 33: ...nerally caused by a bad connection If same on all sources check Pre out Amp in and speaker connections If on a specific source check input connections Sound Cuts In and Out If on all sources check Master EQ outboard equalizer if inserted and speakers If on a specific source check input EQ and source equipment Sound has Bad Tone Check gain staging Check PowerLimit control If a 70V system check to m...

Страница 34: ...ways been there this indicates defective electronics Crackles Defined as a popcorn noise If the crackle persists during pauses this indicates defective electronics Trace using the procedure shown under Hiss Crackles which occur during audio peaks or when the electronics are vibrated usually indicate bad connections Radio Interference Defined as unwanted pickup of broadcast or CB radio The mic inpu...

Страница 35: ...ide stable performance until parts fail from age Internal servicing must be referred to qualified personnel The amplifier may be inspected for loose screws on the outside If any loose parts rattle around on the inside when the amp is turned over in all directions please have it serviced immediately as a loose part could lodge in a dangerous place and cause further damage or shock hazard User Maint...

Страница 36: ...ies MPS 2300 saved your carton see if your lvie dealer contractor has one or call lvie to have an empty carton sent for shipping The Series Two warranty does not cover shipping damage caused by returning a product in an improper carton ...

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