Question about Blitz BZA2160 Car Audio Amplifier

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My amp automatically turns over to protect when powered

I have my amp running from the power to a toggle switch ok i have had this amp for about a week and it was working just fine now when it powers up the leds come on it goes to power then striaght to protect????

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Disconnect all of the speakers and see if it does the same thing. If it does come on, you will need to check all of your speaker wire as well as the speakers. If it still goes into protect, I'm afraid to say that there is a short in one or more of the output or driver stages of the amp. Unless you know how to trouble shoot solid state printed circuit boards down to the component level, you will need to have the amp look at by a pro. Good Luck

Posted on Feb 16, 2008

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1 Answer

Amp pulses from power to protect


check it without the speakers if they go to protection,and if not check the speakers

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Hello pruittdarryl,

Does the amp turn off when you remove the remote wire? If it does, then wire a toggle switch into the remote wire and just use it to turn the amp on and off. If the amp does not turn off with the remote wire removed, there is probably a short between the 12V+ and remote terminals. In that case, the amp is probably defective. If it is OK otherwise, you could still use it by putting a heavy duty toggle switch into the power wire itself.

Hope this helps.

Oct 10, 2009 | Kicker ZX300.1 Car Audio Amplifier

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Amplifier turns on but not the subwoofer?


Hello thedj3214,

You can find the color codes for a 1999 Buick Regal here. There is no dedicated amp remote wire. Neither is there a power antenna wire.

You could use the 12V "switched lead (yellow) from the radio or any switched 12V lead directly from the vehicle fuse box. I'd wire it through a dash mounted toggle switch so as to be able to turn the amp on and off manually.

The Sony 2150GSX is a 2-channel amp with the speaker terminals on either side. You do not want to ground the subwoofer itself, only the ground terminal should be connected to bare metal on the vehicle chassis or body as close to the amp as possible. The ground wire does not need to be run to the negative battery terminal.

A ground on one of the speaker leads will probably cause the amp not to power up. A ground on a speaker wire usually activates the amps protection circuit, causing it to not operate until the fault is corrected.

Hope this helps.

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1 Answer

I just had this thing running maybe a month ago no problems nothing working great. now about a month later its turning on then going off i seriously am retarded when it comes to this **** i had it hooked...


Hello bloodyspokes, For the amp to go immediately into protection, something is probably shorted, grounding out, or not grounding properly. First, remove and check the 40A onboard fuse just left of the power/ground/remote terminals. If the fuse is OK, disconnect the speaker wires and try powering up. If it powers up OK, check the speakers and wiring. If it doesn't, disconnect the inputs and try again. Check the grounds of both the amp and your receiver. If these check OK and the amp is still not powering up properly, it's most likely an internal component failure and the amp needs service. Hope this helps.

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2 Answers

My amp automatically goes into protect mode


There are 4 reasons an amplifier tries to protect itself.

Overheating - thermal shutdown.

Over Impedence - The subwoofers installed are not configured into a load the amplifier can handle.

Output is grounded - a positive wire strand may be touching the ground terminal - a wire may be shorted, or a speaker voicecoil is blown.

Intennal problem - Output on amplifier blown, or some other component has failed.

Check your wiring to the amplifier again - if all is good - disconnect the speakers and try to power on. If the amplifier turns on normally - test the speakers for blown coils.

If the amplifier still goes into protect mode - the problem is internal and needs professional repair.

Thanks for using FixYa - a FixYa rating is appreciated for answering your FREE question.

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How do i hook up a B4.250.2 Amp to a home sterio?


Hello umbaftroml,

Here's a link to the owners manual: Scroll down to the B4.250.2 and right click "Download Manual".

http://www.lightningaudio.com/scripts/latech.cfg/php.exe/enduser/std_adp.php?p_sid=572kxbvj&p_lva=&p_faqid=154&p_created=1235512138&p_sp=cF9zcmNoPSZwX2dyaWRzb3J0PSZwX3Jvd19jbnQ9OTEmcF9wYWdlPTE*&p_li=

You'll need some source of 12V DC power which is not available on your home stereo. A 12V battery or DC power supply will work OK. You'll also need to wire in a toggle switch to "trigger" the amp to turn on. Just put the toggle switch inline with a diode for isolation between the power wire and the "remote" terminal on the amp. Flip the toggle on when you need to use the amp.

The speaker connections and source connections are all shown on page 6 of the manual and would in any case, be the same as if you were installing the amp in a vehicle. Be aware that most home stereo speakers are 8 ohms, whereas speakers and subs designed for vehicles are usually 4 ohm or sometimes even 2 ohm. This will not be a problem. you shoud be able to drive 8 ohm speakers, they just won't be as loud because the amp will not produce it's full power into an 8 ohm load. Plug your RCA's into your home stereo's preamp outputs, or if there are no preamp outputs, use the speaker level inputs on the lower edge of the amp.

Hope this helps.

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4 Answers

Amp turns off


Sounds like remote turn on wire is bad. If using aftermarket HU, find another location to power amp. Try the the power antenna wire on the HU to run the REM.

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2 Answers

My amp stays in protection mode


Does it go into protect in the vehicle if you disconnect the speaker wires from the speaker terminals of the amp?


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1 Answer

Protection Light coming on with loud volume and power


It's most likely that the over-current protection is tripping at high power. At lower voltage, the amplifier can't produce as much output power and therefore can't produce enough current to trip the protection circuit.

You need to check your speakers to make sure that they are not shorted. With an ohm meter, the resistance across the voice coil shouldn't read any less than ~90% of the rated impedance.

If the speakers and the wiring are OK, the amp may have an internal fault causing the amp to go into protection.

Let me know if you have any other questions.

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1 Answer

Amp staying in protection mode


No, this amp is not a heavy power consumer- matter of fact it takes very little power to run.Maybe you should check the fuses on the amp to see if they are what is recommended.Also check your fuse kit to your amp- your fuse might not be big enough.If neither works take it back where u got it.

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