[Empeg-general] Re: Turn On/Off Thump

[Ezekiel@empegbbs-noreply.merlins.org]

This morning's progress:

Step 1: Cut CD/Radio switched power lead out of Amp relay circuit.  Now empeg is wired exactly as it had been all week (with no thump).

Step 2: Slide empeg into sled.

Step 3: turn keys to positon 2 (acc power on).  empeg starts up & plays.

Step 4: turn keys to positon 1. Thump.

Step 5: turn keys back to position 2, let empeg begin playing.

Step 6: pull fuse that controls switched power line. No thump and there was a correct LED & shutdown.

Results of the multimeter:  switching the keys from 2 to 1 drops the switch power line to 0.001/0.000 VDC.  Removing the fuse (with key in position 2) drops the switched power line to 0.030 VDC.  Hmmmm.  I checked all voltages at the sled, so I'm certain there's no continuity issues.  I also confirmed the switched line voltage at the vehicle harness (empeg & radio harness disconnected) to be sure the something wasn't backdriving the switched line that 0.03V.  

I also checked the load from the amps (two 2 channel amps) on the blue lead at 0.22-0.23 A, well within the 1A limit.

I think my next step may be to get a relay as Hugo suggested but use it for the switched power line (ie command line side from key switch and switched side between permanent 12V and empeg's switched 12V line).  Further, if this helps the thump I'm going to get another relay and put its control lines on the amp line and the power side from permanent 12V to the switched power into the CD/Radio to achieve my original goal. 

A thought on the didn't thump before, does now situation:   most times I'm not switching the unit on/off multiple times.  So, if it didn't thump the 1st time, I wouldn't have noticed it.  However, it did thump 1st time round this morning, so I'm not sure what to think.

Thoughts?

-Zeke

ps: for what other product is a company principal going to answer a question on Sunday morning? -NONE- 

just say you weren't paying much attention...