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Steg QM 45.4x

Category: Bargain Corner
Product Code: Steg QM 45.4x

All Steg QM range amplifiers are designed to give uncompromising sound quality. The QM range features regulated power supplies, meaning they will produce the same power whether your car is on or off. They are built to exacting standards with great quality internals. If you want unparalleledperformance without sacrificing on sound quality, the QM range from Steg should be first on your list.

NOTE:Steg amplifiers utilise a module to esure accurate crossover frequencies. Please ensure you let us know what crossover frequency you need to use in your system and we will send an appropriate module.




 Class A/B



RMS Power @ 4 Ohm

 4 x 45RMS

RMS Power @ 2 Ohm

 4 x 70RMS

RMS Power @ 4 Ohm Bridged

 2 x 135RMS

RMS Power @ 1 Ohm



 22Hz - 8500Hz


 22Hz - 8500Hz

Filter Slope


Subsonic Filter


Subsonic Slope


Bandpass Capable


Bass Boost Gain


Bass Boost Frequency


Phase Control


High Level Input


RCA Input

 150mV - 3.5V

RCA Output


Total Harmonic Distortion

 Less than 0.05%

Signal to Noise Ratio

 Greater than 95dB

Average Efficiency

 Greater than 60%

Dimensions (W x H x L)

 207mm x 52mm x 223mm

Fuse Rating

 40 Amp External

Power Connection

 4 Guage

Speaker Connection

 Fork Terminal