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Discussion Starter · #1 · (Edited)
After a long pause, its time to get back into the SQ game, so I decided to start a new build.
The main goal is to build a stealth system in my daily driver.

The car: 2022 Toyota Prius aka. Project Uber SQ.

Source: Ill use two. First, the OEM head unit connected via high level into the DSP. Second, iPhone/Ipod touch into a Topping D10 DAC via coaxial digital into the DSP.

Speakers: IIAF Magnifica LE Carbon Fiber/Copper 3 way + 12" IIAF BL5 sub

Amps: Two IIAF D410 4 channel amplifiers. One for each side. Channel 1, 100 watts for the tweeter. Channel 2, 100 watts for the midrange. Channels 3 and 4 bridged to get 275 watts on the midbass. D135 Mono amplifier for the subwoofer (500 watts).

Processor: MINIDSP C-DSP 8X12 DL

Installer: Me.

Picked the car up from the dealer on June 22, 2022.

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Take a look at the dash. Its a pretty nice platform to start.

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J.
 

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Discussion Starter · #2 ·
What do you do the first day you get a new car?
Take it apart, of course. LOL.
The top of the dash comes out in under 10 minutes, 5 if you hold my beer.

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Discussion Starter · #3 ·
The doors also come apart pretty easy.

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Added a bit of deadener and put it back together.

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Moved onto the hatch area.

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Added some deadener.

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Then the headliner suddenly came off.

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J.
 
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Discussion Starter · #4 ·
Also did a bit of measuring.
First, had to get the mic out and measure the OEM system.

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Then used the osciloscope to measure clipping on the front and rear speakers.
With a 1 khz 0 dB tone, the fronts clip at 51/62 and the rears 53/62.
With a 1 khz -5 dB tone, the fronts clip at 56/62 and the rears dont clip.
With a 1 khz -10 dB tone, the fronts and rears dont clip.
With a 50 hz 0 dB tone, the fronts clip at 54/62 and the rears 61/62.
With a 50 hz -5 dB tone, the fronts and rears dont clip..
With a 50 hz -10 dB tone, the fronts and rears dont clip.

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Very interesting , I didn't know you test each driver for clipping and thought you test your amps and headunit and be done. The build is looking very pro , keep up the good work. I'll checking the entire build progress !!
 

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Very interesting , I didn't know you test each driver for clipping and thought you test your amps and headunit and be done. The build is looking very pro , keep up the good work. I'll checking the entire build progress !!
With the last picture that shows the oscilloscope, I believe that he actually is testing the electrical signal from each amplified channel of the OEM system, not the acoustic "clipping point" (distortion) of each speaker. ;)
 

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Discussion Starter · #8 ·
Very interesting , I didn't know you test each driver for clipping and thought you test your amps and headunit and be done. The build is looking very pro , keep up the good work. I'll checking the entire build progress !!
bbfoto is right.
Since Im using the OEM hu as one of my inputs into the DSP, I wanted to know the clipping volume to be able to adjust gains down the rest of the gear with a clean signal.
The amps are here, just waiting on the speakers and this should move pretty fast.

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Hahaha facepalm to my self , I totally missed that picture and just went by his verbal description of testing front and rear speakers . I now see your testing for maximum UN-distorted output signal from the head unit , makes sense now.

i"ve never seen or heard of Italia hi-fi car audio products but those amps look business , I own some steg audio components and twister amps made in Italy and they perform beautiful , It looks like you're going all out for sound quality (y)
 

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bbfoto is right.
Since Im using the OEM hu as one of my inputs into the DSP, I wanted to know the clipping volume to be able to adjust gains down the rest of the gear with a clean signal.
The amps are here, just waiting on the speakers and this should move pretty fast.
J.
Unfortunately, my experience with the SQ of all of the Toyota OEM head units or amplified systems I've done aftermarket installs in has been far from stellar. So, if possible, try to have the option to use a secondary "clean & pure" SQ source into your DSP using another input/preset, such as a portable DAP, etc.

EDIT: DOH! You already covered that in your OP. (y) I should have known better from this being another well thought out and high end Jorge/doitor install! 😊 :bowdown:
 

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Welcome back as I always enjoy your work. I took a break from car audio as well and now I'm back down the rabbit hole!
 
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Discussion Starter · #12 ·
I should have known better from this being another well thought out and high end Jorge/doitor install! 😊 :bowdown:
Yeah, you should. LOL.

Welcome back as I always enjoy your work. I took a break from car audio as well and now I'm back down the rabbit hole!
Thanks.
Welcome back to the madness.

J.
 
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Looks like plenty of room on the dash and pillars to play.
 

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Discussion Starter · #17 ·
Looks like plenty of room on the dash and pillars to play.
Yes, could do several configurations but will start with the easy one.
Tweeters in the a pillars, midrange drivers in the dash and mid bass in the kicks.
Power and speaker wire is also here, so its going to be a pretty busy weekend.

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Discussion Starter · #18 · (Edited)
Weekend progress.
First grabbed the OEM high level signal from the dash speaker harness.
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Solder.
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Individual heatshrink.
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Paired heatshrink.
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Used electrical tape like the OEM harness.

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Discussion Starter · #19 ·
Also started with the tweeters.

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Made some mounting rings with acrylic and mdf.
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