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Macro-Tech 3600VZ  

Power Amplifier

Page 12

Reference Manual

Fig. 3.4  Stereo Wiring

3.3 Wiring

The following section describes common ways to in-
stall your amplifier in a sound system. The input and
output terminals are located on the rear panel. Please
use care when making connections, selecting signal
sources and controlling the output level. The load you
save may be your own! Crown assumes no liability for
damaged loads resulting from careless amplifier use or
deliberate overpowering.

CAUTION: Always remove power from the unit and
turn the level controls off when making or breaking
connections

—especially if the load is a loudspeaker

system. This reduces the chance of loud blasts or dam-
aged loudspeakers.

Macro-Tech amplifiers may be operated in one of three
modes (Stereo, Bridge-Mono, and Parallel-Mono) by
switching the Stereo/Mono switch on the rear panel.
There are VERY IMPORTANT wiring differences be-
tween these three modes which are discussed next.

3.3.1 Stereo (Two-Channel) Operation

The installation is very intuitive in Stereo mode. The in-
put of Channel 1 feeds the output of the same channel
as does the input of Channel 2. To put the amplifier into
Stereo mode, first turn the amplifier off, then slide the
Stereo/Mono switch to the center position, and properly
connect the output wiring as shown in Figure 3.4. Two
sets of binding posts are provided for each channel to
facilitate easy connection of multiple speakers to each
channel. Observe correct loudspeaker polarity and be
very careful not to short the outputs of one channel to
that of the other channel while in Stereo mode.

CAUTION: In Stereo mode, never parallel the two
outputs by directly tying them together or parallel-
ing them with the output of any other amplifier.

Such connection does not result in increased power out-
put and can cause premature activation of the protec-
tion circuitry to prevent overheating.

Содержание Macro-Tech 3600 VZ

Страница 1: ...one 219 294 8000 Fax 219 294 8329 Macro Tech amplifiers are produced by the Professional Audio Division of Crown International Inc Trademark Notice SmartAmp PIP and Grounded Bridge are trademarks and...

Страница 2: ...riodofthree 3 yearsfromthedateofpurchasebytheoriginalpurchaser the warrantyperiod thatthenewCrownproductisfreeofdefectsinmaterials and workmanship We further warrant the new Crown product regardless o...

Страница 3: ...to alert the user to important operating or maintenance instructions WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE Magnetic Field CAUTION Do not locate...

Страница 4: ...lectrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience recep tacles and the point where they exit from the appara...

Страница 5: ...ircuits 21 4 3 1 Output Device Emulation Protection ODEP 21 4 3 2 Standby Mode 22 4 3 3 Transformer Thermal Protection 22 4 3 4 Circuit Breaker 22 4 4 Controls 23 4 5 Filter Cleaning 24 5 Technical In...

Страница 6: ...graph 17 3 14 Inductive Load Transformer Network 18 3 15 Loudspeaker Fuse Nomograph 19 4 1 Indicators 20 4 2 Macro Tech Indicator States 21 4 3 Input Sensitivity and Ground Lift Switches 23 5 1 A Typi...

Страница 7: ...your new amplifier We strongly recommend you read all instructions warnings and cautions contained within Be sure to read Sections 3 3 2 and 3 3 3 if you plan to use the amplifier in one of its two m...

Страница 8: ...the in dustry High damping factor provides superior control over low frequency drivers for a clean accurate low end An articulated VZ power supply for each channel provides excellent crosstalk charac...

Страница 9: ...l 2 IOC indicator will stay on in Parallel Mono mode refer to Section 4 2 D ODEP Indicators During normal operation of the Output Device Emula tion Protection circuitry these indicators glow brightly...

Страница 10: ...el with the PIP connector they should not be used as inputs if the installed PIP has active circuitry Caution The Channel 2 input should NOT be used in either mono mode L Ground Lift Switch The input...

Страница 11: ...commended over perforated panels because they have larger openings and cause less restriction A good choice for increased air flow behind a rack cabi net door is to mount one or more squirrel cage blo...

Страница 12: ...on the rear panel There are VERY IMPORTANT wiring differences be tween these three modes which are discussed next 3 3 1 Stereo Two Channel Operation The installation is very intuitive in Stereo mode T...

Страница 13: ...CHANNEL 2 IN PUT or the signal level and quality may be greatly de graded Keep the Level control of Channel 2 turned completely down counterclockwise Note The input jack and level control for Channel...

Страница 14: ...u face the back Connect the input signal to Channel 1 only DO NOT USE THE CHANNEL 2 INPUT or the sig nal level and quality may degrade greatly Turn off the Channel 2 Level control full counterclockwis...

Страница 15: ...ing Fig 3 9 Balanced and Unbalanced Phone Plugs positive the ring is negative and the sleeve is ground see Figure 3 9 Wiring for various sources fol lows the XLR wiring guidelines shown in Figures 3 7...

Страница 16: ...has plenty of room on its circuit board for input filters A third problem to avoid is hum The two most common sources of hum in an audio system are inductive cou pling and ground loops Inductive coup...

Страница 17: ...ograph in Figure 3 13 and the procedure that follows to find the recommended wire gauge AWG or American Wire Gauge for your system Fig 3 13 Wire Size Nomograph Use Good Connectors 1 To prevent possibl...

Страница 18: ...factors are 50 or lower Higher damping factors yield lower distortion and greater motion control over the loud speakers A common damping factor for commercial ap plications is between 50 and 100 High...

Страница 19: ...as the Littlefuse 361000 series If the loudspeaker is only susceptible to damage caused by prolonged overload such as over heating use a fuse or circuit breaker having the same slow thermal response...

Страница 20: ...ower supply is working It does not indi cate the high voltage supply status As a result disrup tion of the high voltage supplies has no effect on the Enable indicator This means that in the improbable...

Страница 21: ...stics capabilities Protection systems include ODEP standby and an AC circuit breaker These fea tures provide protection under any conditions 4 3 1 Output Device Emulation Protection ODEP Crown invente...

Страница 22: ...n excessively clipped input signals can activate this system The amplifier s fault protection system will put an ampli fier channel into standby mode in rare situations where heavy common mode current...

Страница 23: ...Bridge Mono or Parallel Mono mode turn down the Channel 2 Level control and only use the Channel 1 control The Input Sensitivity Switch is located inside the back of the amplifier Figure 4 3 It is set...

Страница 24: ...e clogged the unit will not cool as efficiently as it should and may produce lower than normal output levels due to high heat diffuser temperature and activation of the ODEP circuitry To clean remove...

Страница 25: ...s two composite NPN and two composite PNP devices The devices connected to the load are referred to as high side NPN and PNP and the devices connected to ground are referred to as low side NPN and PNP...

Страница 26: ...switch embedded in each transformer protects them from overheating The low voltage transformer TF 1 uses a separate fan motor winding The TF 1 output is rectified by diodes D1 4 delivering an unregula...

Страница 27: ...Macro Tech 3600VZ Power Amplifier Page 27 Reference Manual Fig 5 5 Circuit Block Diagram...

Страница 28: ...en current at any one instant exceeds the design criteria the limiters remove the drive from the LVAs thus limiting current in the output stage to a safe level To further protect the output stages a s...

Страница 29: ...tts into 8 ohms Bridge Mono mode 3505 watts into 4 ohms 3140 watts into 8 ohms Parallel Mono mode 3555 watts into 1 ohm 3190 watts into 2 ohms 100 VAC International Units Stereo mode with both channel...

Страница 30: ...Balanced inch phone jacks on chassis and internal PIP connector Balanced 3 pin XLR connectors are provided on the P I P FX which is a standard feature Input Impedance Nominally 20 k ohms balanced Nom...

Страница 31: ...height 16 inch 40 6 cm depth behind mounting surface and 2 5 inches 6 4 cm in front of mounting surface Approximate Weight Center of gravity is 6 inches 15 2 cm behind the front mounting surface 120...

Страница 32: ...turers qualify their specs by saying they are typical subject to manufacturing tolerances single channel driven or that they are specified with fuses Figure 6 1 Minimum Power Matrix bypassed Each of t...

Страница 33: ...Operating the amplifier at levels higher than 0 05 THD can result in output power levels that are higher than those listed in the maximum power matrices Maximum Power Notes All maximum power specifica...

Страница 34: ...g 6 4 Typical Damping Factor Fig 6 5 Typical Output Impedance 10 100 1 K 10 K 100 K FREQUENCY Hz 2 1 0 1 2 3 4 dB 5 6 7 4 ohm 8 ohm 1 watt 504 0 126 8 31 8 MILLIOHMS 8 0 2 0 6 dB 20 100 1 K 10 K 20 K...

Страница 35: ...35 Reference Manual Fig 6 7 Typical Crosstalk Fig 6 6 Typical Phase Response Measured with a TEF Analyzer TEF 45 0 45 100 1 K 10 K 20 K FREQUENCY Hz TEF Measurement TEF Measurement 100 1 K 10 K 20 K F...

Страница 36: ...t short duration paging is 1 Here are the equations used to calculate the data pre sented in Figure 7 1 AC Mains Power Draw watts Total output power with all channels driven watts x Duty Cycle Amplifi...

Страница 37: ...ownPIP compatibleamplifiers into Crown s IQ System Each channel of each amplifier can be monitored and individually controlled from an inex pensivePC Atotalof15functionscanbeeithermonitored orcontroll...

Страница 38: ...ror driven compressor It is not a typical signal driven compressor but a circuit to prevent any overload It can yield up to 13 dB or additional signal safety margin without noticeable program change P...

Страница 39: ...can be used to se cure your amplifier s level controls in situations where the front panel controls are subject to tampering One is needed for each channel They can be ordered through the Crown Servic...

Страница 40: ...ory For warranty service we will pay for ground shipping both ways in the United States Contact Crown Factory Service or Technical Support to obtain prepaid ship ping labels prior to sending the unit...

Страница 41: ...____________________________________ ______________________________________________________________________________ ______________________________________________________________________________ _____...

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