What to do

[ShadeTreeMechanic]

Does the cc1 measure amplifier output?

Edit: my bad I just watched the video. I never knew that the cc1 had another function. So you would use the cc1 to turn the gain down on the amp that is turned up.

Also when you find the max clean output from the head unit then leave it there as a reference point for the gain settings for all the amps. Maybe I misunderstood but it sounded like you were adjusting the head unit volume when you were adjusting the amp gains.

Edited March 18, 2017 by ShadeTreeMechanic

[audiofanaticz]

First make sure both amps gains are turned all the way down, crossovers on the amp(s) and radio all set to fullpass, and any eq set to flat if your testing output of the headunit through the amp! Otherwise you will have mixed output voltages.

In your case, I would test the ends of the RCAs for the max volume of the headunit using 0db tone (40hz for subs, 1khz for mids/high).

Plug your rca cables in again, then set the gains of those 2 amps at -5 or -10db (40hz for subs, 1khz for mids/high).

If one of those 2 amps is still putting out more voltage than the other goto your amp that is putting out less power, take your cc-1 and calibrate it to that amp, than move your cc-1 over to the louder amp and adjust the gain down until it is shown good on the cc-1.

You should then be good to go with both amps putting out the same power.

[06RTCharger]

11 hours ago, broncoupe said:

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 does ur headunit outputs/rca's clip at?? Meaning before/without amps. I still dont get why ur adjusting ur amp settings by turning up the headunit. Maybe thats some kinna different setup ive never looked into. 

[06RTCharger]

I Retract everything i said lol. Page 7 of the manual. It was something i never looked into. 

[ShadeTreeMechanic]

Now I'm going to read page 7.

[broncoupe]

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 

 

 

 

Edited March 18, 2017 by broncoupe