Question about Sony XM-2252HX Car Audio Amplifier

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XM-2252HX hello i have 2 amp of this model one is completely burn , but the second work but goes easily in short circuit load with a sub 4 ohms , i want to know how i can set up the idle current of that amplifier ?? i didn't found the service manual on the internet ( sorry for my english but i'm french )

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The idle current (bias current) of the output section is set at the lowest point that will prevent notch distortion. Setting it higher will only make the amp run hotter. It has nothing to do with the protection circuit.

You should check the woofer's DC resistance with an ohm meter to confirm that it's close to the rated impedance. You should also check the wiring to make sure it's not shorting to ground (which could cause the amp to go into protection).

Posted on Nov 05, 2007


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I have Sony xm-2165gtx amp 165 watt rms x 2 at 4 ohm 200 watt x 2 at 2 ohm 400 watt x 1 bridge output at 4 ohm stereo or bridge mono output 4 ohm stable in bridge mode this mean can't go lower then 4 ohm...

You can't bridge that amp onto a load lower than 4 ohms. So you can't bridge that amp onto two 4 ohm subs. To get the most power out of your subs is easy. Run one channel to one sub and the other channel to the other sub. 165 watts RMS is plenty for most subs.

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I got Sony Xplod XM-ZR704 700W 4/3/2-Channel Car Stereo Amplifier and 12" sub. it play good for continuous 2 hours but after that starts tripping and goes on off. i checked all wires and connections.

Amp is probably over heating. Make sure the ohm load of speaker is good for that amp. This amp is not really built to handle a bridged 2 ohm load. Make sure ground wire is clean and tight to the body chassis.

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Hey i have a sony amp (600 watt xm-zr604) with 2 10"sub(sony xplod).when i raise the volume hight enough the amp go off(red light came on) what can i try

sounds as though (at high volumes) the amp thinks it has a short circuit. This may be caused by the way you have them connected.
Speakers have a resistance and amps needs a certain amount of resistance to function right (too little resistance = short circuit)
The way it works out for the speakers is, if the two are connected to one amp output channel, the amp will see half of the resistance of a single sub. (4 Ohms/sub amp sees 2 Ohms)
If the amp instructions say that it's 4 Ohms/channel then you need to use 1 channel for each sub.
Hope this has been some help.

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How should i arrange the wiring on my xm-zr1852 xplod amplifier to get the best performance out of my 12'' audiobahn subwoofers?

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I have 3 hifonics zeus Size: 12 inch Impedance: Single 4 Ohms Peak Power Handling: 800 watts RMS Power Handling: 400 watts Sensitivity: 89.9 dB Aluminum Cast Basket American Spider For Reliable Performance...

Hello king3132,

Three 4 ohm subs can be wired parallel for a 1.34 ohm final load or series for a 12 ohm load. If you have the channels of the amp bridged, I hope that the subs are connected in series because the Sony XM-2200GTX is NOT rated for or stable at 1.34 ohms. It's only stable down to 4 ohms.

You definitely will not get the maximum potential of the subs from that amp. They can handle 400 watts RMS each (total 1,200 watts) and the amp is only capable of 500 watts RMS into 4 ohms (less at higher impedance), so each sub could only be getting a maximum of 166.6 watts RMS.

Hope this helps.

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Can this amp xm-2252hxcan be use to drive a 800 watts sony xplod

yep, you'll be safe. It's capable of delivering 225W x 2 RMS and 600W x 1 RMS into 4 Ohm loads.

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1 Answer

When i connect both subs(jbl gt 1041d) my amp goes to protection and when i ony hook one up it doesnt go to protection

Hello lilcylentsur,

It sounds like when you connect both subs, the impedance match is too low for the amp to handle. 2 4-ohm DVC subs with both the coils and subs wired in parallel will present a 1-ohm load which is too low for most amps.

The solution is to wire the voice coils in series, (connect a short jumper from one positive to the other negative on each sub). and then wire the remaining terminals to your amp. This will result in a 4-ohm load which most amps can handle.

Here's a "wiring wizard" which allows you to see the ohm loads of different wiring configurations.

Hope this helps.

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How do i bridge 3 subs to a 4 channel amp

My information shows the XM-1652Z as being a 2-channel amp. It will not be stable below 4-ohms in bridged mode. For best power, your subs will need to be 2-ohms with all 3 wired in series. This will present a 6-ohm load to the amp. After wiring the subs in series, connect the positive speaker wire to one channel (+) and the negative speaker wire to the other channel (-). For the 1652Z no other wiring is necessary. For subs you will also want to set the LPF (80Hz) switch to the "ON" position (to the right).

Keep in mind that the rated output is only 400 watts RMS at 4-ohms in bridged mode. That's kinda wimpy for 3 subs. You would probably obtain better results from two 2-ohm subs, each connected to a separate channel. That way each sub would be getting 200 watts RMS, still low but there's lots of good subs that will sound pretty loud with 150-200 watts

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You cannot parallel two subs AND run them on the Bridge. You must have at LEAST a 4 ohm load on the bridge, and 2 4 ohm subs in parallel equals TWO OHMS. BAD!!! Move each sub to it's own channel or your amp will soon fry.

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