I got a new amplifier Caliber CA 5520, Im bridge it to a rockfox double coil woffer, everything working fine, only the heat of the amplifier is very high. i cant even stand to put my hand on it for 3 second. is this normal? My previous Caliber CA5040 is not as hot as this one. Can some ICE sifu here please advise me? Thanks in advance.

What is the spec of your amp and woofer?

Amp

Caliber 2Channel High Power MOSFET Amplifier 1800watts
20Amp Fuse x 1pcs
Model: CA-5520

*Full MOSFET Power Supply
*Supply Voltage: 11~15V DC
*Power Output 4 Ohm: 60w x 2
*Power Output 2 Ohm: 120w x 2
*Bridge Output 4 Ohm: 150w x 1
*Frequency Response: 20Hz~36KHz(-3dB)
*Bass Boost: 0/+6/+12dB
*Signal Noise Ratio: 90dB
*Input Impedance: 22K Ohm
*Input Sensitivity: 200mV~2V
*T.H.D: 0.05%
*Hi Pass Freq.: 50Hz~500Hz
*Low Pass Freq.: 50Hz~500Hz

Woofer
12 inch doublecoil subwoofer
Frequency respond: 41 ~ 3 kHz
Impedance 4 ohms
Power handling 600W
Sensitivity 89dB/W/m

This post has been edited by alt3ch: Aug 2 2014, 11:23 PM

AMP spec:

*Bridge Output 4 Ohm: 150w x 1


Woofer spec:

Power handling 600W ( I suppose RMS = 600W )


How is that even possible ??? That is overloading the amp.

Not good...you need a bigger amp...

so he needs an amp that's bigger than 600w?

Not bigger than 600W. But around 500W also will do already. He's using a dual voice coil sub which is definitely very power hungry. The amp he is having now is definitely a low-end 2 channel amp. So he needs a monoblock around 500W.

You not going to blast 100% volume anyways. If buy higher than 600W also ok, but the gain must set lower. Of coz, price wise, the higher power rating , more expensive.

From my experience,amp around 80% of the rated RMS of the woofer also will work properly already.

This post has been edited by k!nex: Aug 6 2014, 04:25 PM

go for 1500w rms...
that made me happy for a long time....

Youre stressing you amp. Its a matter of how long the amp can last only before kaput. Get a powerfull 2 channel or a monoblok.

Thanks for all sifu advise...I'm get what you people mean dy.... Will hunt for a better amp...

DVC 12' 600W RMS? ditch the 2 channel amps. Get a class D amp.

Minimum bridging speaker impedance is common at 4 ohm. Maybe some of your speakers fall frequently to 2ohm or less At low frequencies it can go down to 1ohm. This makes the amplifier work hard, therefore emit more heat than usual.
Speaker impedance rise or fall depending on music frequency range. Any speaker system or even hifi speakers fluctuate at different frequencies. When manufacturer quote 4ohm at 100W..it means 4 ohms at 1khz test frequency which is constant. Some good speaker system for hifi incorporate a extensive crossover with impedance compensation circuit to prevent falling to below dangerous levels.
A bigger power amplifier is a better and wiser than bridging just to obtain more music power. Bridging isn't always a good idea and just a bonus feature. There's also less refinement in the audio quality than single channel.

This post has been edited by bsl555: Aug 11 2014, 06:41 PM

Get a class D amp for your Subs...