Kenwood car amp (KAC-M845) and Sony Subwoofer (XS-GTX122LT)

[LambOfGod]

Hi all

I have kenwood car amp KAC-M845 which has the following specs

Maximum Power Output
• 720W
Rated Power Output (14.4V )
• 60W x 4 at 4ohms (20-20kHz 1.0% THD)
• 90W x 4 at 2ohms (1kHz 1.0% THD)
• 180W x2 at Bridged 4ohms (1kHz 1.0%THD)

An externally hosted image should be here but it was not working when we last tested it.

Can I use it to run Sony 12 Inch 300W In-Car Subwoofer (XS-GTX122LT)

Power Output 300W
Diameter 12inch (30cm)
Speaker System Subwoofer
Peak Input Power (W) 1350W
Rated Input Power (W) 300W

Appreciate your help

 

[Perry Babin]

You can bridge 2 channels to the woofer.

 

[reloader650]

Hi,

The amp should work just fine. Just need to bridge 2 of the channels for 180 watts. You'll need to double check that the subwoofer is wired for 4 ohm load. The amp is only stable down to a 4 ohm load when bridged. Hope that's what you needed.

Regards,
Matt

 

[LambOfGod]

Thanks for your quick reply
But as per the specs of the amp the bridged connection output only gives 180w and the subwoofer needs 300w? Am I missing someting?
Sorry I'm new to these things

 

[Perry Babin]

They don't have to match. You can run a 300w woofer on a 10,000 watt amp but you'd have to be very careful not to damage the woofer. You can run a 1000w woofer off of 20w output of a head unit but don't expect a lot of output.

 

[LambOfGod]

They don't have to match. You can run a 300w woofer on a 10,000 watt amp but you'd have to be very careful not to damage the woofer. You can run a 1000w woofer off of 20w output of a head unit but don't expect a lot of output.

Thanks a lot for the information, correct me if I'm wrong if I connected my amp to the mentioned Sony subwoofer I will be getting maximum wattage of my bridged connection which is 180W from the subwoofer (when I put the amp on max. level).
Excuse my ignorance 😱😱

 

[Perry Babin]

The gain setting has nothing to do with the power output. With a head unit capable of producing enough signal, the amp could be driven to full power, no matter the gain setting. Read the following:
Amplifier Gain Controls

 

[LambOfGod]

The gain setting has nothing to do with the power output. With a head unit capable of producing enough signal, the amp could be driven to full power, no matter the gain setting. Read the following:
Amplifier Gain Controls

appreciate your help man, thanks again.