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T O U R I N G
T
he Crown Macro-Tech i Series amplifiers continue the Macro-Tech legacy of unparalleled sonic accu-
racy and detail, putting sound quality above all else. Their patented, cutting-edge Class-I circuitry gets
more power out of an amplifier with less waste. Each model features a Global Power Supply designed
to deliver maximum power in any country. The i Series offers studio-quality analog signal processing
with built-in load, line voltage, input and output monitoring. Standard Ethernet networking via System
Architect
provides integrated monitoring and control to give system operators access to the system from
any location.
SPECIFICATIONS
Performance
Frequency Response
(at 1 watt, 20 Hz - 20 kHz into 8 ohms):
±0.25 dB.
Signal to Noise Ratio
(below rated full-bandwidth power, A-weighted):
>112 dB.
Total Harmonic Distortion (THD)
(at 2 watts into 8 ohms): < 0.1%.
Total Harmonic Distortion (THD)
Plus Noise (at full rated power):
< 0.35%, 20 Hz to 20 kHz.
Intermodulation Distortion (IMD)
(60 Hz and 7 kHz at 4:1,
from full rated output to –30 dB): < 0.35%.
Damping Factor (20 Hz to 100 Hz at 8 ohms):
> 5000.
Crosstalk (below rated power, 20 Hz to 1 kHz):
> 80 dB.
Common Mode Rejection (CMR)
(20 Hz to 1 kHz): 55 dB, typically >70 dB.
DC Output Offset (shorted input): < ± 3 mV.
Input Impedance (nominal):
10 kilohms balanced, 5 kilohms unbalanced.
Maximum Input Level: +20 dBu typical.
Network: Onboard HiQnet™, compatible with
standard 100 Mb Ethercom hardware.
Load Impedance: (Note: Safe with all types of
loads)
Stereo: 1/2/4/8/16 ohms.
Bridge Mono: 2/4/8 ohms.
Input Sensitivity (referenced to 8 ohm rated
output): 1.4V, 32 dB gain, and 26 dB gain.
Voltage Gain (referenced to 8 ohm rated
output):
MA-5000i: 37.1 dB to 22.2 dB
MA-9000i: 37.9 dB to 23.0 dB
MA-12000i: 39.3 dB to 24.5 dB
Required AC Mains: Universal AC input, 100-
240VAC, 50/60 Hz (±10%). Maximum AC mains
voltage 264VAC.
AC Line Connector: Five cordsets supplied with
amplifier (USA, UK, European, Australia, India).
Front Panel Controls and Indicators
Bridge Mode Indicator: Amber LED illuminates
when the amplifier is set to Bridge-Mono mode.
Ready Indicator: Green LED, one per channel.
On (bright): Ready.
On (dim): Onset of compression.
Off: Thermal failure.
Signal Indicators: One green LED per channel.
Solid green: Input signal is above –40 dBu.
Bright green: Channel’s output signal has
reached the onset of audible clipping.
Power Indicator: Blue LED indicates amplifier
has been turned on and AC power is available.
The LED will flash when the AC line voltage is
10% above or below the nominal rated value.
Data Indicator: Yellow LED on front panel
indicates network data activity. Data indicator
flashes only when the amplifier is polled for
data, or is polled to see whether it is online
Power Switch: Push-on/push-off switch with
built-in green AC mains present indicator.
Volume Control: Precision detented attenuator
with 31 steps, press-and-hold mute function.
Volume Control LED Ring: A ring of green LEDs
around each volume control show the position
of the control. Entire ring flashes when channel
is muted. Can be converted to be a level meter.
Back Panel Controls, Indicators and
Connectors
Power Cord Connector: Detachable 20 amp IEC
inlet. Cord locks with suppliled cord retention
clip. Voltage range is indicated above IEC inlet.
Reset Switch/Circuit Breaker: If the current
draw of the amplifier exceeds safe limits, this
breaker automatically disconnects the power
supply from the AC mains. The switch resets
the circuit breaker.
Output Connectors: Two high-current, 50A
Neutrik
®
Speakon
®
NL4MLP (mates with
NL4FC or NL4), one per channel. Ch 1
Speakon
®
is wired with Ch 1 and Ch 2 outputs
for use with single 4-conductor cable. Two pairs
of high-current, 60A color-coded 5-way binding
posts (for banana plugs, spade lugs or bare
wire).
Analog Input Connectors: A 3-pin female XLR
connector for each channel.
Analog Loop Thru Connectors: Two male XLR
passive analog loop through.
Mode Switch/Indicator: Sets amplifier to
Stereo, Bridge, or Input Y mode. OFF=Stereo,
YEL=Bridge, GRN=Y.
Network Connectors: Two Neutrik
®
Ethercon
connector accepts RJ-45 type connectors for
HiQnet™ networking. Next to each connector is
a yellow LINK ACT indicator that shows network
activity, and a green 100Mb indicator that shows
a 100Mb network connection.
Data Indicator: Yellow LED on back panel
indicates network data activity. Data indicator
flashes only when the amplifier is polled for
data, or is polled to see whether it is online.
Preset Indicator: Green/yellow LED flashes to
signal the number of the current preset. LED is
green if current preset is active, or is yellow if
current preset is modified.
Input Sensitivity Switch: Three-position switch
providing 1.4V, 32 dB, and 26 dB settings for
both channels.
Firmware/Software
Firmware can be updated at www.crownaudio.
com > Support > Downloads.
Software features: Same as PIP-Lite module
(except no Listen Bus): User Presets, Clip Event
Monitor, Input Signal Level Monitor, Output
Signal Level Monitor, Thermal Headroom Level
Monitor, Power/Standby Control, Signal Mute,
Polarity Inverter, Input Signal Fader, Dynamic
Gain Monitors (Ghost Faders), Amplifier
Information, User and Channel Labels, Amplifier
Mode, Amplifier Output Mode, Line Voltage
Monitor, Error Reporting, Auto Standby, Input
Signal Compressor/Limiter, Peak Voltage
Limiter, Average Power Limiter, Clip Eliminator,
Thermal Limiter, Limiter Tie, Load Supervision.
Construction
Cooling: Dual-zone, microprocessor controlled,
continuously variable speed fans, front-to-back
airflow.
Front Panel: Cast aluminum with integrated
handles.
Dimensions: 19 in. (48.3 cm) W x 3.5 in. (8.9
cm) H x 16.2 in. (41.1 cm) D.
Weight: 28 lbs (12.7 kg) net, 36 lbs (16.3 kg)
shipping.
Protection: Amplifier is protected against
reactive loads, faults and shorts. If one channel
experiences a catastrophic failure, the entire
amplifier will shut down.
Included Accessories: Rear rack ears, rack
screws, operation manual, power cords, foam
air filter.
Regulatory Certifications
Other Applications
4/08 140535-2