[SoundQubed/Fi Blazer - 4 Fi Team 18’s on 16k (rebuild time!)]

I have 4 runs total. 2 power 2 ground. You can't see the battery but I have an xs power xp3000 under the 4 channel behind the beauty panels. So from the battery in back I have 2 runs of power and 2 runs of ground going to the 3500, and a run of 4g going from battery to 4 channel. It's all shown in my build log.

As for fuses, I have 2 on the power runs under the hood, two on the runs right before the battery, and two from battery to 3500. So 6 total. All 150a fuses I believe.

Ahh okay.

I couldn't see that 4GA run, since it's hidden, and that was my main question

Thanks a ton for the clarification

[SoundQubed/Fi Blazer - 4 Fi Team 18’s on 16k (rebuild time!)]

I'm planning on running a similar setup in a Blazer soon. SQ3500 + SQ Q4-90.

So you have two runs of 1/0 going to the back. Do you have a 3500 with dual inputs? If so, how do you achieve that and also power the Q4?

And how many fuses, located where, and of what size?

Thanks a ton, really been enjoying following this build log

[SoundQubed/Fi Blazer - 4 Fi Team 18’s on 16k (rebuild time!)]

I have a similar build going on, 99 blazer with an HDC3 18".

Mind me asking some of the specs of the box? I just built one that is about 5.9 cubes net, tuned to 37hz, 120 square inches of port.

It's real impressive for you to be hitting 150s with just that single subwoofer!

[DD-1 First time use questions]

Hello all, I've been dabbling in car audio for a couple years now, and have always set my gains using DMM for the subwoofer amplifier, and just never knew about distortion in head units, so I would play those to max volume or near it in most of my systems.

After seeing a lot of people recommend the DD-1, I went out and purchased one. Tonight I used it on two of the systems in my family, and have questions about a couple things.

1st system:

1999 Trailblazer, stock battery, stock alternator (105A)

JVC KD-A605 HU

4x Kenwood KFC-1665S door speakers (30W RMS each)

Pioneer GM-D9601 amp (1200W @ 1 ohm)

Soundcubed HDC3.118 subwoofer (1500W RMS, dual 2 ohm wired to 1 ohm total). (in a sealed 6ft^3 enclosure, not sure on tuning)

The first thing I did was use the DD-1 to check the max un-distorted HU volume. By setting everything flat, using track #1, and using the DD-1 on the subwoofer amplifier, I found that the max undistorted volume was 25, out of around 50 or something. Does this seem right? 25 seems really quiet to me, and I usually ran 30-35 previously.

If 25 is normal and correct, how can I get more volume out of the system? New head unit? additional amplifier for door speakers? (currently running the door speakers just on the HU, as I've never used an amplifier for door speakers before.)

Then, knowing 25 is the top end un-distorted volume, I went to set up the subwoofer. I dialed in the gains on the amplifier until just before distortion. Now, however, the subwoofer barely even moves. You can hear some bass, but when viewing the subwoofer the excursion is close to nill. Should this be the case running 1200W RMS to a 1500W subwoofer? (I set the gain first with track #3, then #5, and finally #7). Even on #7 (-15dB) it still doesn't move very much compared to when I had it set with the DMM.

Could it be correct that the subwoofer excursion with the DD-1 settings are close to nill, as opposed to a ton of excursion when set with a multimeter?

2nd system:

2004 GMC Yukon Denali, stock battery, stock alternator (130A)

stock HU

stock door speakers

Hifonics Brutus BRX1100.1D (1100W @ 1 ohm)

2x SoundCubed HDS312 subwoofers (1200W RMS, dual 4 ohm, wired to 1 ohm total) in a custom ported box (not sure on tuning)

For this setup, the DD-1 told me that the stock HU could be turned 100% of the way up without distortion. Pretty cool!

Then I went onto the subwoofer amplifier gain setting. Using track #5 (-10dB) I could set the gain level on the amp all the way up without distortion, same with track #7 (-15dB)

I just got this system, so while the excursion of the subs seems minimal, I'm guessing it's because I'm running 1100W RMS instead of the 2400W RMS they are rated for.

My question with this system is, does it make sense that the amplifier gain could be set 100% of the way up without distortion?

I think that's about it for now.

If you made it this far in the reading, thank you so much. Any and all advice is greatly appreciated!