Frequency Response ; Damping Factor ; Crosstalk - Page 2

Crown International 
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439 
TEL: 574-294-8200
FAX: 574-294-8FAX
Customer Service: 800-342-6939 
or 574-294-8200. 
www.crownaudio.com

4/08                                                            140535-2   

Specifi cations

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):

> 110 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 

amplifi er (USA, UK, European, Australia, India).

Front Panel Controls and Indicators

Bridge Mode Indicator:

 Amber LED illuminates 

when the amplifi er 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 amplifi er has 

been turned on and AC power is available. The 

LED will fl ash when the AC line voltage is 10% 
above or below the nominal rated value.

Data Indicator: 

Yellow LED on front panel indi-

cates network data activity. Data indicator fl ashes 
only when the amplifi er 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 fl ashes when channel is 
muted. Can be converted to be a level meter.

Back Panel Controls, Indicators and Con-
nectors

Power Cord Connector:

 Detachable 20 amp IEC 

inlet. Cord locks with supplied cord retention clip. 
Voltage range is indicated above IEC inlet.

Reset Switch/Circuit Breaker:

 If the current draw 

of the amplifi er 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 Neu-

trik

®

 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 amplifi er to Stereo, 

Bridge, or Input Y mode. OFF=Stereo, YEL=Bridge, 
GRN=Y.

Network Connector: 

This Neutrik

®

 Ethercon con-

nector accepts an RJ-45 connector for HiQnet™ 
networking. Next to the 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 indi-

cates network data activity. Data indicator fl ashes 
only when the amplifi er is polled for data, or is 
polled to see whether it is online.

Preset Indicator: 

Green/yellow LED fl ashes to 

signal the number of the current preset. LED is 
green if current preset is active, or is yellow if cur-
rent preset is modifi ed. 

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:

 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 Moni-
tors (Ghost Faders), Amplifi er Information, User 
and Channel Labels, Amplifi er Mode, Amplifi er 
Output Mode, Line Voltage Monitor, Error Report-
ing, Auto Standby, Input Signal Compressor/Lim-
iter, 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 
airfl ow.

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:

 Amplifi er is protected against reactive 

loads, faults and shorts. If one channel experi-
ences a catastrophic failure, the entire amplifi er 
will shut down.

Included Accessories: 

Rear rack ears, rack 

screws, operation manual, power cords, foam air 
fi lter.

Note: All measurements apply to units in Stereo mode 
with 8-ohm loads and rated input sensitivity unless oth-
erwise specified.

Specifi cations subject to change without prior notice. Latest 
information available at www.crownaudio.com.

Crown, Macro-Tech and Crown Audio are registered 
trademarks; HiQnet is a trademark of Crown International. 
Other trademarks are the property of their respective owners.  
Printed in U.S.A.

© 2008 Crown Audio

®

 Inc

Macro-Tech

®

i Series