Go Back   Home > Forums > >

Kicker ZX1500.1 protects when driven hard
Kicker ZX1500.1 protects when driven hard
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools
Old 13th January 2021, 09:21 PM   #1
peeby is offline peeby
diyAudio Member
 
Join Date: May 2020
Default Kicker ZX1500.1 protects when driven hard

While steadily increasing drive input it works well until it is drawing approx 50 amps on the bench ps and then it goes into protect (prior to output clip).

Although I do not believe I have maxxed out my bench supply, could amp be doing this due to limitations of the supply? Usually an amp just starts to output clip when it maxes out my supply, but not go into protect.

Am about to trace out the overcurrent circuit as I have no drawings.

Any help would be great.
  Reply With Quote
Old 13th January 2021, 09:30 PM   #2
RussellKinder is offline RussellKinder  United States
diyAudio Member
 
Join Date: Mar 2015
Location: Austin, TX
Hi peeby,

Once upon a time I designed amps for Kicker, but long before the ZX1500.1 came out. (in other words, I don't have a schematic.) This could be due to supply limitations. Peak current can be well in excess of average current. Perhaps you could try putting a hefty car battery in parallel with your 50 A supply.

This shutdown would be due not to overcurrent protection in the amplifier, but the undervoltage lockout protection at the battery input. Do you have an oscilloscope that you can monitor the battery voltage at the amplifier? If it drops below 10V, that may be a problem, and if it drops below 8V, that's a shutdown event.
__________________
Best Regards, Russell
Wherever you go, there you are. --Buckaroo Banzai
  Reply With Quote
Old 13th January 2021, 09:32 PM   #3
RussellKinder is offline RussellKinder  United States
diyAudio Member
 
Join Date: Mar 2015
Location: Austin, TX
Also, the folks at Kicker are pretty friendly. You can probably get some tech support.
__________________
Best Regards, Russell
Wherever you go, there you are. --Buckaroo Banzai
  Reply With Quote
Old 13th January 2021, 11:11 PM   #4
PapaZBill is offline PapaZBill  United States
diyAudio Member
 
PapaZBill's Avatar
 
Join Date: Oct 2013
Location: Yale, Oklahoma
What is the size of your bench supply. If 50 amp this won't be enough. A car battery in parallel would work as Russell suggested.

If you still have issues post pics of board. I have schematics and can walk you through any repairs.

Hi Russell btw still fixing the occasional ZR! Truly a legacy line of Amps!
__________________
Any sufficiently advanced technology is indistinguishable from magic.

Arthur C. Clarke
  Reply With Quote
Old 13th January 2021, 11:19 PM   #5
RussellKinder is offline RussellKinder  United States
diyAudio Member
 
Join Date: Mar 2015
Location: Austin, TX
See, I told you they were friendly.
__________________
Best Regards, Russell
Wherever you go, there you are. --Buckaroo Banzai
  Reply With Quote
Old 13th January 2021, 11:21 PM   #6
peeby is offline peeby
diyAudio Member
 
Join Date: May 2020
Thank guys. Will get back on it tomorrow.
  Reply With Quote
Old 14th January 2021, 06:40 PM   #7
peeby is offline peeby
diyAudio Member
 
Join Date: May 2020
Put a 12V truck battery in parallel with my bench supply.

Question - so when I first paralleled the battery and the PS the PS was charging the battery, so it saw the battery as a load. Could the PS be seeing the battery and the amp as a load?

Amp is still opening the relay before it clips.

Voltage at amp is well above 12v when amp relay opens.
  Reply With Quote
Old 14th January 2021, 06:52 PM   #8
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
The battery's charge was lower than the PS voltage. In that situation, the battery was a slight load.

You need to put a cutoff switch and a fuse in series with the battery for safety.
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote
Old 14th January 2021, 06:57 PM   #9
peeby is offline peeby
diyAudio Member
 
Join Date: May 2020
So with it being a slight load, did it help increase or decrease the current available to the amp?
  Reply With Quote
Old 14th January 2021, 07:13 PM   #10
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
It depends on the supply voltage. If the supply voltage is very low (ie 10.5v), the battery won't do much. If the supply voltage is 13v or greater, a healthy battery will help greatly.

The files in the following folder show how much current a healthy, fully charged battery can deliver and the voltage that it's dragged down to at that current. Above 12.5v, the battery will contribute little or nothing to the supply voltage.

You'll need to view full size to see the lines clearly.

Index of /temp/battery test
__________________
Anyone who purchased the repair tutorial, email me (babin_perry@yahoo.com) if you want to download the latest version.
  Reply With Quote

Reply


Kicker ZX1500.1 protects when driven hardHide this!Advertise here!
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Kicker KX600.4 protects and led alternately flashing nonprof Car Audio 14 1st June 2016 05:20 AM
Kicker ZX1500.1 without gate drive. Randy62 Car Audio 7 29th May 2013 06:47 PM
kicker zx1500 mosfet question ksweet420 Car Audio 9 11th March 2013 10:12 PM
kicker zx1500.1 output inductor? shane300zx Car Audio 9 2nd August 2011 09:58 AM
Kicker zx1500.1 not working Andrew123654 Car Audio 12 19th October 2010 01:04 PM


New To Site? Need Help?

All times are GMT. The time now is 01:48 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright ©1999-2021 diyAudio
Wiki