4 REV 10's

[What she said]

I got the Rev 10's installed and they sound awesome, but i have a problem that i can not fIgure out.... Please help!!!! Nothing has changed other than removing a syn4, and one pair of pro80's, and installing a SD2, and two pair of REV10's. I used all the same amp wiring also.
The problem is when i turn the key off, or start the engine the tower speaker pop. (only the tower speakers) I talked to Wet sounds and they said that it sounds like a bad ground to the WS420SQ,, so i checked the ground and its grounded under the dash at a grounding block, but i went ahead and ran a jumper wire strait to the battery, and nothing changed so i left it grounded under the dash. I also notice faint hiss/noise out of the tower speakers when the volume is all the way down. Another thing i noticed was WITH OUT the ground wire hooked up to the WS420SQ the lights where still on but dim, and the hiss/noise was louder. Any ideas?? Oh and i also tried running jumper wires ground/power from WS420SQ to Radio ground/power, and it was worse, but im unsure if the ground was hooked up to a ground? It was a black wire but i could not trace it.
It sounds like it could be that ground wire, but running the jumper to the battery should have fix it.. Any ideas guys?

[What she said]

Only pic i have.REV 10.jpg

[gasoline_24]

Did you run all of your grounds (stereo, eq, amps) to the house battery? I just added the Eq and have a similar set up with smaller speakers. I would make sure everything runs from the house battery to a distribution block to go to all of your components. I would do this for both power and ground.

[What she said]

Im not sure where the stereo ground goes to, but everything else is was grounded to the house bank, and the problem was still there. The messed up part is thsi problem was not there untill i installed the new amp and speakers. Why would it be different?

[chpthril]

So the WS-420SQ was already part of the system with the Syn-4/Pro80 combo and no turn-on pop?

Although all grounds do eventually lead back to the engine block electrically, there can be some advantages to grounding an EQ and/or head-unit directly to the closest battery or even better, an amp ground lug or ground distribution block.

At this point, I would ignore anything odd going on with the system powered up, yet the EQ's ground disconnected. The illumination was probably seeking out a ground path through another circuit.

Where is the WS-420SQ drawing its B+ from? This is a key to eliminating noise. Did you rtune the WS-420SQ gains after the SD-2 install? What you describe as a hiss with the volume low, sounds like gain hiss.

[What she said]

Yes the WS-420SQ was part of the system with the syn-4/pro80 combo, and NO pop, and no gain hiss.
I did re-tune everything after talking to WS, because i was oriiginally i was told to set the master volume at 3/4. When i re-tuned the EQ with master volume all the way up it help the gain hiss, and the speaker pop seems less, but still very concerning. So i have been turning the stereo off before i turn the key. FYI the power wire off the EQ is run to the ign swi. I tried running a jumper wire to the stereo power wire, and it did not solve the problem. I feel the problem is in the EQ ground?
Where is the best place to power the EQ from?
Where is the best place to ground it? (House battery?)

[chpthril]

FYI the power wire off the EQ is run to the ign swi

This is incorrect on 2 levels, so it needs to be addressed before anything else.
1) The WS-420 red wire is a B+ (constant battery positive) and needs to be connected as such, not switched. The orange wire is the switched turn-on wire and needs to share the same turn-on as the amps, which should come from the head-units blue-wht turn-on wire. It is imperative that this red B+ wires shares the same battery source as the head-unit and amps, it can not do that if wired to the key switch.
2) If you have wired this red wire to the switched side of the key switch, then that is most likely the cause of the turn-on/off pop.

ALL audio equipment needs to share the same battery reference. Without knowing your exact battery bank setup, the ideal spot to draw the head-unit and EQ B+ and GND from is the power cable lugs on the largest amp or the distribution blocks if you have them in the scheme.

[houstonshark]

It's very likely that you have a bad amp. I have a SD2 and 2 SD6's. When I first installed everything, one of the SD6's did the same thing.

I talked to Tim at Wet Sounds about it and he said to just swap it out. Some of the very early SD amps could have this problem.

Call and talk to Rob or Simon and tell them that I mentioned this was an issue with one of my amps and that swapping the amp out for a new one fixed it.

[houstonshark]

Sorry. Mention that you talked to TJ Morgan about it and that I had the same issue with a Sinister amp. Swapping it fixes the issue.

[What she said]

I looking at the wiring tonight and run it as you stated Chp, and if that dont fix it i will call Simon. Thanks for the info guys! I had a feeling from the get go it was the amp, cause nothing has changed besides the amp. What a pain in the butt!

[chpthril]

My gut says its not a bad amp. This is based on how the rest of the system is wired, especially where the WS-420 is drawing its B+ from. Before swapping any gear, the fundamentals need to be right. Im not saying Houston is wrong, its still a possibility of a defective component, but theres no way to narrow it down to a faulty component, without addressing those wiring basics.

[What she said]

Ok last night i took a look at the WS420SQ and this is how its wired.
1. blue remote wire is ran to the stereo remote wire blue/white. its good!
2. black ground is ran to the grounding block under dash. not ideal, but work just fine before the new amp
3. red power wire is ran to the ign swi. not ideal but wored just fine before the new amp

So at this point i i ran jumper wires for the ground (to house battery), and power wire (to power wire at stereo)
And nothing changed at all! Same result's as last time i ran jumper wires to ideal location.

One thing i forgot to mention was at high volume the amp goes in to speaker wire short protection mode by blinking fast, and if i turn the volume down it will come back on 10-20sec later. Im not sure why it does this? I thought maybe it detected distortion, but i never heard any distortion.
If everyting worked perfect before the new amp, and now i have to 2 problems. Sounds like a bad amp to me?

[houstonshark]

Bad amp. While you are waiting on the new one, I would double check all of your speaker connections to the tower too though I'm not sure why the amp would shut down at high volume and not at low to mid volume. Maybe you have a bad speaker or a speaker with a slightly separated voice coil. Maybe the tinsel leads are touching one one of them? I don't remember how the Rev10 driver looks. This may not be possible.

Simon will help.

[What she said]

Ok i figured out the speaker pop! I was jumping the red power wire off the EQ to the red wire off the radio, and thats the same as running it off the ign swi like i had it! I found out thru wet sounds i need to run it to the yellow wire off the raido. Problem one solved! You where right Chp Thanks for your input guys!
Problem 2= amp cutting off at high volume? Wet sounds thinks its distortion, the amp is protecting everything.

[chpthril]

WSS,

Someone on Wakeworld found this thread, has similar issue. What was the final resolution?