[What to do]

Thanks everyone for ideas 

Im english and i like to really understand what Im doing for times like this over here in England there is a lot of BS spoken

This system is small by USA standards but massive by English

this the system

Headunit

Alpine Double Din 

Front Drivers door

2 x Blam 6.5 mid Bass

2 x Blam 3" mids

Front Passenger Door

2 x Blam 6.52 mid Bass

2 x Blam 3" mids

Windscreen pillars

Custom builds

1 x Blam 2" tweeter 

1 x Blam 3" mid

Front Passenger Footwell

10" Diamond Subwoofer

Rear Drivers Door 

2 x Blam 6.5" mid Bass

Passenger Rear Door

2 x Blam 6.5" mid Bass

Rear most pillars x2

Custom Builds 

2 x Blam 2" Tweeters

2 x Blam 3" mids

Boot Area

2 x Kicker 15" Subwoofers

Amps

3 x Blam 1100 watt RMS x 1 ohm for Subwoofers

3 x Blam 4 Channel amps 150 RMS @ 3 ohm load

the Alpine headunit on RCAs  outputed more on 1 channel so with measurement taken at  Blam Amplifier speaker terminal

with amp gains on minimum and flat  undistorted    Lh  29  (7.6 volts)   Rh 32 (8.8 volts)

this difference was enough to make Rh channel noticeably louder  that was my problem

From what i worked out and tell me if i'm wrong the DD1 plus calculates overlap from the confirmed distortion point 

your saying   SO What this is where i caused myself a problem 

I bridged 2 Amps to the front doors so 1 amp became left side  1 became right 

This is what made the imbalance in the Alpine Headunit a problem

Solution CC1 synced everything  to spot on balance 

thanks again 

 

 

 

[What to do]

unless i'm wrong we are all going in different directions 

according to SMD this is correct way to set up

All connection and using the SMD  disc  as per instruction manual  

1 -  DD1plus connected to output of Amp  turn up headunit until distortion light comes on 

OK  but normally it would be a stereo 2 channel or 4 channel amp

So you now have distortion point   say 29 of 35 from headunit

Now according to Rockford who SMD support you should add 10% of overlap to the amp 

this definitely helps with the power output of the amp and normally that is setup down

But in my setup i have used 2 amps so 1 for Left channel 1 for right channel

so i now repeat the procedure above only problem on this amp DD1plus shows distortion at 32 of 35

if i now add 10% overlap this amp will be much louder than the other

because put simply the gain is turned up

this is why i think the correct thing to do here is use the CC1 to match the outputs

 

[What to do]

Get a Beer 

I will explain it completely cause i think we are on the same thinking

will post pictures tomorrow which will make it all clear 

I think the CC1 did a great job because the front end sounds so balanced

what concerned me was that 1 amp would be louder than the other as by using the DD 1 plus the gain would be higher on the amp that distorted at 32 because the distortion light would come on later 

and therefore once you add overlap also  

broncoupe 

 

[What to do]

10 hours ago, Skullz said:

If i remember what others have said, you want to use the amp that distorts first and volt match them the same.

so CC1 is used to volt match is this correct ?

[What to do]

System 2 x 4 channel Amps bridged to run 2 x 3 ways in each front door 

So i am running 1 amp left door      1 amp right door 

i used DD1 to find distortion point  on 1 amp it was 32 0f 35  LH channel ( Alpine Double Din unit in defeat mode )

other amp only 27 of 35  RH channel

So there's my problem 

is this correct solution use 27 as distortion point then set 10% overlap at  LH channel amp

use CC1 to set other amp RH channel to get both amps and therefore left and right channels in balance 

what i find confusing is this does the DD1 use the distortion  point as the start of its overlap calculation

which is why i have gone for using the CC1 as this i'm thinking this will sync the other amp 

thanks