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Features 

1.  (1) MIC input with front- and rear-panel connectors 
2.  Rear-panel AUX 1 and AUX 2 inputs 
3.  Line-level outputs allow connection to another amplifier 
4.  100V and 70V constant-voltage speaker outputs and 4-16 ohm constant-

resistance speaker output 

5.  Commercial-grade toroidal transformers produce high performance audio on a 

wide range of frequencies with minimal noise and high fidelity, even at high 
volume 

6.  Intelligent limiter can reduce excess signal 
7.  Reliable protection against overload, short circuit, and power fluctuation for 

optimum reliability 

8.  Oversized heat sinks protect against overheating, protecti

ng the amplifier’s 

working life 

9.  Interrupt feature mutes AUX inputs when signal is detected on the MIC input -

speed of restoration of AUX inputs may be adjusted from sharp to gradual 

 

Specifications 

Pre Amp Out:  150 mV / 15k Ohms 

Total Harmonic Distortion:   < 1% 

Line Level Output:  0.775V / 1k Ohms 

Operating Temperature:  -10 C 

– 40 C 

AUX Level Input:  300 mV/ 10k ohms 

MIC Level Input:  5 mV/ 2k ohms unbalanced / 2.5V / 1k ohms balanced 

Cooling Mode:  Air Cooling 

Power Source:  100-120 VAC / 60 Hz 

Power Consumption:  30 W 

Amplifier Section (Amp in @ 1 kHz, 8 ohm load output): 

 

Rated Continuous Output Power (THD 1%):  20 W 

Rated Maximum Output Power (THD 1%):  30 W 

Input Sensitivity/Impedance:  1V / 20k ohms 

S/N:  Better Than 90 dB 

Frequency Response (@ 1 kHz Half Power Output, +- 3dB)):  80 Hz - 16 kHz  

Summary of Contents for EQ-AMP20W

Page 1: ...EQ AMP20W 20W Mixer Amplifier Instruction Manual 4091 AMTC Center Drive Clearwater FL 33764 6976 727 531 3105 727 531 3965 www amtc com ...

Page 2: ...s protect against overheating protecting the amplifier s working life 9 Interrupt feature mutes AUX inputs when signal is detected on the MIC input speed of restoration of AUX inputs may be adjusted from sharp to gradual Specifications Pre Amp Out 150 mV 15k Ohms Total Harmonic Distortion 1 Line Level Output 0 775V 1k Ohms Operating Temperature 10 C 40 C AUX Level Input 300 mV 10k ohms MIC Level I...

Page 3: ...rol Bass 100 Hz Treble 10 kHz 1 dB 3 dB Aux1 2 Input Section Aux In 1 kHz Preamp Out Input Sensitivity Impedance 300 mV 500 Ohms S N Better than 75 dB Frequency Response 3 dB 80 Hz 16 kHz Tone Control Bass 100 Hz Treble 10 kHz 1 dB 3 dB Net Weight 7 27 lbs 3 3 kg Shipping Weight 9 92 lbs 4 5 kg Dimensions 10 87 27 6 cm W x 10 63 27 cm D x 2 6 6 6 cm H ...

Page 4: ...Input Level Control Knob 6 AUX1 Input Level Control Knob 7 AUX2 Input Level Control Knob 8 MIC Input 1 4 6 3mm Do not use if rear panel MIC input jack is used 9 Protection Indicator LED Indicates protection mode Turn off amplifier and check for short circuit in speaker wiring or excessive speaker load 10 LED Level Indicator ...

Page 5: ... stereo input the left and right channels are summed into a single mono amplified channel 5 Line Level Output RCA Note These outputs pass the same audio that pass to the speakers but without amplification If AUX inputs are stereo the left and right channels are passed to these output jacks 6 Common Speaker Output 7 4 16 ohm Speaker Output select only one connection from 7 8 and 9 8 70V ohm Speaker...

Page 6: ... prior to operating the unit 2 Retain Instructions This manual should be retained in a safe place for future reference 3 Heed Warnings All warnings on the unit and in this manual should be adhered to 4 Follow Instructions All operating and use of instructions should be followed 5 Water and Moisture The unit should not be used near water washtubs sinks in a wet basement or near a swimming pool etc ...

Page 7: ...ring Service The unit should be returned to AMTC when a The power supply cord or the plug has been damaged or b Objects have fallen or liquid has spilled into the unit or c The unit has been exposed to rain or d The unit does not appear to operate normally or exhibits a marked change in performance or e The unit has been dropped or the enclosure has been damaged 13 Servicing The user should never ...

Page 8: ...hased outside the U S A Its possessions or territories 6 Compatibility of this product with any particular interface This warranty may be enforced by the original purchaser In the event this product needs service contact AMTC at 1 800 741 AMTC 2682 We will advise you of proper procedure Please do not return the product to AMTC without prior authorization Whenever warranty service is required you m...

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