Carver MSMP User manual

MSMP / MSMPX
UserManual
© Phoenix Gold International, Inc. November 2001
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Rev. 11.20.01

SAFETY INFORMATION
Caution
The exclamation point within an equilateral triangle is
intended to alert the user of the presence of important
operating and maintenance (servicing) instructions in the
Please read this entire manual, especially the Safety Warnings, before operating
your amplifier.
Table Of Contents
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Introduction
Unpacking & Paperwork
Important Paperwork
Features
Configuring the MSMP / MSMPX
JP101
JP100
Connecting the MSMP / MSMPX
Input Connections
3
3
3
4
5
5
5
5
5
6
7
JP3
SW1
6
8Specifications
MSMPX 7
Input Adjustments

INTRODUCTION
Congratulations on your purchase of a new Carver Professional CV Series Power Amplifier.
The CV Series Amplifiers and Accessory Modules are designed expressly for commercial and
institutional audio applications. The CV Series products are designed and manufactured by
Carver Professional, a division of Phoenix Gold International, Inc. They combine Carver
Professional’s experience in pro audio along with the needs of the system integrator to provide
an uncompromising product for the commercial sound industry. The sonic heritage of Carver
Professional combined with the performance, manufacturing quality and attention to detail that
has defined Phoenix Gold International assures you of the value and integrity you seek in an
amplifier product. Thank you for placing your confidence in Carver Professional and Phoenix
Gold. We know your amplifier will provide many years of dependable service and reliable
sound reproduction.
Please read this entire manual, especially the Safety Warnings, before operating your
amplifier.
UNPACKING AND PAPERWORK
Carefully unpack the module and keep the original carton and packing materials for future
moving, shipment or long-term storage. After opening the box, please check for visible signs
of damage that were not apparent from the outside of the box. If you encounter what appears
to be concealed damage, please contact your Carver Professional Dealer or Carver Professional
before installing unit.
Important Paperwork
Make sure to save your sales receipt. Your receipt is extremely important to establish the
duration of your Limited Warranty and for insurance purposes.
Model: _______________
Purchased at: __________________________ Date: _________________
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MSMP
The MSMP input module provides two independent inputs. Input channel 1 accepts line level inputs only, and
uses both a Euro-Style connector or paired RCA’s for line level sources. The RCA inputs are summed mono
internally for use with the output of a computer sound card, CD Player, AM/FM Tuner, Cassette Deck or any
other unbalanced audio source.
Input channel 2 accepts a Mic or Line Level input, and use a Euro-Style connector. Sensitivity is adjusted with
the Mic/Line trim control on the module. The module provides 15V of Phantom Power for this input, and is
assigned with a jumper (JP3) on the module’s circuit board.
The Mic / Line input has an LED that illuminates Green if the Phantom Power is engaged for that input. The
LED illuminates red if the input’s preamp is being overdriven. If both conditions occur the LED illuminates
Amber. If excessive drive signal is applied to the preamp while the phantom power is engaged the LED may
turn Red from its Amber condition.
Input sensitivity of INPUT 1 can be set at –6dBu, 0dBu or +6dBu.
Each input channel can be assigned to output to channel 1, channel2 or both via a DIP switch (SW1) on the
module’s circuit board.
1. INPUT LEVEL ADJUSTMENT – Sets the level of that input channel into the mix.
2. DIAGNOSTIC LED – Indicates the presence of Phantom Power and / or whether the input s being overdriven.
3. MIC / LINE SENSITIVITY – Sets the sensitivity of Input CH #2’s preamp allowing an input of varying
level.
4. RCA CONNECTORS – Allows connection of source components that utilize RCA connections using standard
cables. This connection is summed mono internally, and provides a mono source.
5. EURO STYLE CONNECTORS – Used on all inputs to provide connection points for balanced or unbalanced
input.
*Carver Professional reserves the right to improve its products at any time. Therefore, specifications are subject to change without notice.
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1
4
3
5
2
Features

5) SW1 – Four Position DIP Switch (Figure 1)
This bank of four switches are numbered 1 through 4 from left to right. Switch #1 and #2
assign the output from Input #1 to CH2 and CH1 respectively, and switch #3 and #4 assign
the output from Input #2 to CH2 and CH1 respectively. Weather you use CH #1 or CH #2
output as left or right is your choice, but the normal convention would be to select CH #2 as
Right and CH #1 as Left.
When the individual rockers on the four position DIP Switch are flipped down toward the edge
of the card closest to the switch the individual switch is On. In the opposite position the switch
is Off. With all the four positions switched to the Off position, the module will not pass a
signal.
2) JP100 – Selects Normal Mode, Bridged Mono Mode or Parallel
Mono Mode (Figure 2)
The legend on the circuit board will indicate which position
to use for each of the output modes. Normal Mode
configures the output in a conventional two channel stereo
mode.
Bridged Mono Mode configures the output to combine
the power of the two independent
channels into one larger channel. See the operating
instructions for your amplifier for the available power at
various loads. Parallel Mono Mode configures the module
to drive both channels equally with a mono signal so that
each channel is reproducing the same audio.
Note: When using the MSMP in Bridged Mono or Parallel
Mono configurations, configure the output of the various
input stages to CH 2 only. If you are using the MSMP
module in a CV1501 or CV2501 single channel amplifier,
you should configure the outputs to CH 1 only, on switch
SW1. (Figure 1)
4) JP3 – Enables the 15V Phantom Power Feature (Figure 2)
If you are using a Condenser Microphone or Electret
Microphone requiring 15V or less Phantom Power this
jumper enables this feature. JP3 enables the phantom
power for Input #2.
Configuring the MSMP / MSMPX for Use
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Be sure that you have properly set the following jumpers and
configuration switches:
1) JP101 – Input Sensitivity for Input 1 (Figure 1)
This jumper gives you three selections for the input
sensitivity 0dB which is referenced to 0.775Vrms, -6dB
which is referenced to 0.3875Vrms and +6dB referenced
to 1.55Vrms. This selection should match the output of
your source component as closely as possible.
If your source component had an output voltage of 0.5Vrms,
your best choice would be to use the –6dB or 0.3875Vrms
sensitivity. This setting would insure the best signal to
noise ratio and the module can accept the excess voltage
without a problem. Setting a sensitivity greater than
the source components output voltage will prevent
the amplifier from producing full output.
Figure 1
Figure 2

Connecting the MSMP to the Amplifier
Inside the module well of the Carver Professional CV or ZR Series amplifier locate the terminated
twenty conductor flat ribbon cable. The connector is keyed to fit into the twenty pin receptacle on
the MSMP module in only one direction. Plug the ribbon cable into the receptacle taking care not
to bend any of the pins. The connector should insert easily. If any resistance is encountered please
double check the orientation of the termination on the ribbon cable in relationship to the receptacle.
Input Connections
Input #1 uses both a pair of unbalanced RCA connectors (See Figure 5) that are summed mono
and a Euro-Style connector that provides a balanced line level input (See Figure 3). The Euro-
Style connector’s input is summed again with the pair of RCA connectors.
If you had, as an example, the left and right output of a AM/FM Tuner with an output voltage of
400mV, the summed signal would have a combined voltage of up to 800 mV, and you should
set the input sensitivity at JP101 at 0dB (0.775Vrms). If you were to add to that combination
another line level signal into Input #1 via the Euro-Style connector , with a line voltage of 0.775Vrms
your combined voltage at Input #1 would be 1.575Vrms and the input sensitivity for Input #1
should be set at JP101 at +6dB (1.55Vrms).
+
-
Ground
Balanced Unbalanced
+
Ground
Unbalanced
+
Ground
Signal
Signal
Signal
Signal
The illustrations above show how to connect a balanced or unbalanced signal to the MP42.
Please note that polarity is important to the absolute phase of the output signal.
Figure 3 Figure 4 Figure 5
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Input #2 is designed to accept a wide range of signal levels, from microphone level inputs
to line level inputs. Unlike Input #1, for thi input the sensitivity is set with a variable adjustment
on the front panel of the MSMP module. The Mic / Line sensitivity adjustment becomes more
sensitive as it is rotated clockwise. To adjust the sensitivity, you can insert a typical signal and
adjust the sensitivity until the red or amber peak light is triggered. At this point adjust the sensitivity
until the red or amber LED only triggers at the extreme peaks of the signal. (See Figure 6)
For all of the inputs there is a Level adjustment. This controls the output level of each input, and allows
you to match levels in the output mix.
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MSMPX
The only difference between the MSMP and MSMPX is that on the MSMPX the Euro
Style connector on Input #2 has been replaced with an XLR Connector.
Pin 2 is (+), Pin 3 is (-) and Pin 1 is ground. (See Figure 7)
To make an unbalanced connection to the XLR, connect signal to Pin 2, connect
Ground to Pin 3 and jumper Pin 3 to Pin 1. (See Figure 8)
3
2 1
Pin 2 +
Pin 3 -
Pin 1 Gnd
Figure 7
3
2 1
+Signal
Ground
Figure 8
Figure 6
Input Adjusments
Figure 9

MSMP Specifications
Measurement Conditions (unless otherwise specified):
±15vdc power supply
One input selected, Level and Gain @ maximum
Source Impedance: Balanced Mic/Line 150ohm, Unbalanced Line 25ohm
Output Terminations: 10k ohm
0dB Reference Output Level: 0dBr= 0.775Vrms
1kHz Signal
Mic/Line Inputs #2
Input Type: Euro-block, balanced
Voltage Gain: 6dB to 44dB (continually variable from Line to Mic)
Mic Input Impedance: Designed for use with: 50 to 600ohm
Actual (typical): 1200 ohm
Line Input Impedance: Designed for use with greater than or equal to 10k ohm
Actual (typical): 20kohm
Equivalent Input Noise: -125dBV with 150 ohm source, 20 to 20,000Hz
Mic Clip Level: -24dBV (0.5% THD+N)
Line Clip Level: +13dBV with gain set to minimum (0.5% THD+N)
Mic Input Sensitivity: -46dBV for 0dB output
Line Input Sensitivity: -8.2dBV for 0dB output
CMRR, Mic: >70dB @ 1kHz, >70dB @ 10kHz (-46dBV input level)
CMRR, Line: >88dB @ 1kHz, >70dB @ 10kHz (-8.2dBV input level, gain @ minimum)
Peak Indicator Threshold: Red at 5dB below clipping
Phantom Power: +15Vdc, individually selectable for each channel with internal jumper
Phantom Power Indicator: Green when selected
Line Input #1
Input Types: Euro-block balanced, RCA unbalanced (both are summed together pre level and gain settings)
Voltage Gain, RCA unbalanced: -2.2dB
Voltage Gain, balanced: 0dB (unity gain)
Selectable Gain Settings: +6dB, 0dB, and -6dB (internally selectable with jumper)
Input Impedance, balanced: 50k ohm
Input Impedance, unbalanced: 22k ohm
Input Clip Level: +22dBu
Input Sensitivity, balanced: 0.775mVrms (0dBu) for 0dB output (0dB gain setting)
Input Sensitivity, unbalanced: 1Vrms (2.22dBu) for 0dB output (0dB gain setting)
CMRR, balanced input: >75dB @ 1kHz, >63dB @ 10kHz (0dBu input level, 0dB gain setting)
Outputs Ch1 and Ch2
Output Type: 20 pin polarized header interface to CV amplifier
Input to Output Routing: Inputs can be internally switched to Ch1, Ch2, or both outputs
Output Modes: Normal, Parallel Mono, Bridged Mono (internally selectable with jumper)
Frequency Response: 15 to 37,000Hz, -3dB limit (all inputs)
S/N Ratio, Mic/Line Inputs #2, 3, and 4: -96dB with gain control @ 50% (A-Weighted)
-75dB with gain @ maximum (A-Weighted)
S/N Ratio, RCA input #1 unbalanced: -90dB (A-Weighted)
S/N Ratio, input #1 balanced: -95dB (A-Weighted)
THD+N, Mic/Line inputs # 2, 3, and 4: <0.004%, 20 to 20,000Hz (gain @ minimum)
<0.03%, 20 to 20,000Hz (gain @ maximum)
THD+N, RCA input #1, unbalanced: <0.005%, 20 to 20,000Hz
THD+N, input #1, balanced: <0.005%, 20 to 20,000Hz
Output Clip Level: +22dBu
Channel Separation between Ch1 and Ch2 Outputs: 85dB @ 1kHz
(with Input #2 @ -46dBV, Input #1 terminated with 150 ohm)
Channel Separation between Ch1 and Ch2 Outputs: 87dB @ 1kHz
(with Input #1 @ 0dBu, input #2 terminated with 150 ohm, gain at minimum)
Channel Separation between Ch1 and Ch2 Outputs: 65dB @ 1kHz
(with Input #1 @ 0dBu, input #2 terminated with 150 ohm, gain at maximum)
Regulatory Compliance:
Proposed ETL/C Mark to: UL6500, 2nd Edition
CE Certification to: EN55103-1 & EN55103-2
Operation Temperature Range: 0°to 70°C (32°to 158°F)
Storage Temperature Range: -45°to 70°C (-113°to 158°F)
Dimensions (H x W x D): 81mm x 158mm x 109mm (3.20 x 6.25 x 4.30 in.)
Net Weight: 0.26kg (0.58lbs)
Shipping Weight: 0.4kg (0.8lbs)
Furnished Accessories: (2) Input terminal blocks, 3 pin
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