Go Back   Home > Forums > General Interest > Car Audio

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 Search this Thread
Old 15th October 2010, 01:17 PM   #1
diyAudio Member
 
Join Date: Dec 2007
Default Kicker ZX 1500.1 Spkr relay dropping early

I just repaired this 1500.1 ....new power supply fet's and drivers, output fet's too.

Sounding real good, but the spkr relay is dumping kind of early on bass notes- using 4 ohm load.

I notice L100 (inductor in series with output) get's pretty hot.
No DC on spkr terms, just raw audio.

These amps aren't that finiky are they ?
  Reply With Quote
Old 18th October 2010, 06:54 PM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I've had several kicker class D amps come through the shop in the last few days and the inductors on all of them would get too hot to hold my hand on within 5 minutes of being powered up. The temperature didn't change much when the amp was driven hard. The new 1500s have thermal gap pads to allow the cover to soak some of the heat from the inductor.
  Reply With Quote
Old 18th October 2010, 08:17 PM   #3
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
I had a 1000 with the relay intermittently dropping out. The problem was Q2. The gain was too low so there was too much voltage dropping across it. The collector of this transistor supplies 12v to the 594 via a 10 ohm resistor (R5 on the ZX1000). There shouldn't be more than a fraction of a volt drop (E-C). If there is more drop and the voltage on pin 12 of the 594 is low, replace the transistor.
  Reply With Quote
Old 21st October 2010, 10:18 AM   #4
diyAudio Member
 
Join Date: Dec 2007
Perry, Thanks for the feedback on the output inductor temp.

This thing is only dropping out on heavy bass hits and does not appear intermittent or random. I'll check the drop on that transistor before I send it out.
Thanks
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Kicker ZX 1500.1 Smoked general_neo Car Audio 11 8th March 2013 04:17 AM
kicker 1500.1 mike49504 Car Audio 66 14th July 2010 06:09 PM
Blown Volfenhag ZX-7180 Amp vario Car Audio 1 13th March 2008 06:13 PM
Phoenix Gold ZX series amp questions theclerk Car Audio 0 24th February 2004 10:15 PM


New To Site? Need Help?

All times are GMT. The time now is 02:44 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2