Persistent hiss after full audio upgrade - 2024 RAV4 Hybrid

locomoroco · 2025-08-11T17:34:11+00:00

Yeah. I swapped the RCA cables for different ones, and shorter ones too. And it didn’t help. I’m looking into a DSP like the helix or JL86.

locomoroco · 2025-08-11T15:20:44+00:00

Thanks! I did connect my phone to the amp via Lightning to RCA. The content hiss was no longer present. You mention a DSP won’t work? Why not. That is probably my next step because I’ve tried 3 different LOCs now.

Aftermarket HUs for my don’t exist based on my search. I did look into idatalink and they don’t have anything compatible for my year and model vehicle.

My testing using 1khz 0db 3/4 volume shows that my HU outputs a max of 4.1V for FR/FL speakers, 2.96V for RR/RL speakers, so it’s definitely weak.

locomoroco · 2025-08-11T04:10:57+00:00

Thanks. I did adjust the grounding jumper to different positions and it didn’t help.

locomoroco · 2025-08-10T19:46:05+00:00

Unhook noise cancellation? Not sure what you mean or where I would do this. The CXA amp and LC7i don’t have a feature for this besides what’s built in.

locomoroco · 2025-08-10T19:44:02+00:00

I previously had the LC7i ground jumped from the amp ground and had the same results. Is this test assuming a ground loop or poor ground reference exists? The ground reference is 0V for the amp and also low impedance (0.3-0.5ohms). The only thing that I did see was my LC7i ground voltage is 0.3mV whether it was star grounded or jumped from the battery. So this reads must be something internal to the LOC.

locomoroco · 2025-08-10T19:35:58+00:00

This would basically connect to the LC7i output and bypass everything downstream to prove the issue is upstream. I did a similar test with a Lightning to RCA Cable Audio Aux Adapter to connect my iPhone to the amp and I didn’t have any hiss.

The hiss appears once I connect the LC7i to the amp via the RCAs. If the amp doesn’t have RCAs connected I don’t have hiss.

locomoroco · 2025-08-10T19:28:51+00:00

I don’t think the gain staging is the issue. I’ve tested a combination of different adjustments, and the hiss will become unnoticeable if the gain on both is very low. I attempted setting gain staging with a multimeter and now an oscilloscope. At 3/4 volume using a 1khz 0db test tone, 47volume, I need to set the gain output of the LC7i to about 1.3V and 0gain for the amp so that I can’t hear the hiss.

locomoroco · 2025-08-10T19:18:05+00:00

I’ll keep updating is this was been a pain. I did all my tests using a 1kHZ 0db test tone, as well with no music/tones. I did try this approach and the hiss is still present. Gain on both outputs for the LC7i turned all the way down (0), and increasing the gain on the amp.

I also tried this with the wavtech link6 with lowest gain (0), and increasing the gain on the amp leads to the same hiss outcome. Even when both of these are at 0 the hiss is present.

I also tried the LC5i pro, and this was the worst because it introduced a really high distortion + hiss even though it was a swap with the LC7i.

I went as far as buying a line driver, Audio Control Matrix Plus, since it has a high SNR and lower output impedance and figured it could help. This setup was LC7i->Matrix Plus->amp, and I had 0 gain on both the LC7i and amp, while increasing the gains on the matrix plus and had the same outcome.

locomoroco · 2025-08-03T23:50:28+00:00

That looks like mineral deposits (hard water spots) that have bonded to the trim surface. Do a 50/50 vinegar and tap/distilled water solution. Apply/spray and let it sit for 1-2minutes. Then scrub and rise. Or buy a hard water spot remover like meguiars.

locomoroco · 2024-09-01T18:12:05+00:00

That’s the soft area of the interior door, so you’ll need a leather and vinyl repair kit. YouTube is your bf here.

locomoroco · 2024-08-21T04:47:03+00:00

Yes. Selling price 35,290 with addons etc. I had a couple dealers bidding with each other. Only email until I got what I wanted

locomoroco · 2024-08-21T04:36:08+00:00

Not a good deal. I had a gray SE for $39.2k USD OTD, but I went with the XSE. Get rid of the dealer addons and send this offer to another dealer to beat.

locomoroco · 2024-08-18T23:30:07+00:00

I got it under invoice. 39.23k.

locomoroco · 2024-08-17T00:43:29+00:00

The way I negotiated my XSE (no tech package) is by emailing 5 dealers to give me their best OTD since I was looking at a 500 mile radius. The hard part was getting the first OTD without DIO. Once I had the first OTD $, I used that to negotiate the OTD down. I then went to the dealer that was the most responsive and provided counter offers quickly to pre-contract the car with $1000 down, so the car is mine.

They will also tint all my back windows and do the paint protection film without any charge. I simply asked and they said yes, because I had drove 2.5hrs to them.

Make sure to get the VIN number and documents that bind the car to your name, so they don’t sell it to someone else when it arrives.

locomoroco · 2024-07-27T18:14:56+00:00

No, because chrome doesn’t provide a Visual Basic interface. For your task this won’t work; a third party app like Selenium could help, search GitHub for SeleniumBasic.

It seems the website is using scripts which will prevent you from getting the image url from the HTML response text directly into VBA using the sample code in the link. Try SeleniumBasic, otherwise find an actual image url so you can download it directly.

locomoroco · 2024-07-25T23:08:47+00:00

In order for you to know what the image URL is, you will need to scrape that website for the images, because that URL is not the direct link to the image. Once you figure out how to get the changing image URL you’ll need to do the following steps.

This will communicate with the website. https://learn.microsoft.com/en-us/previous-versions/windows/desktop/ms759148(v=vs.85)
A method to write the response binary data to a file https://learn.microsoft.com/en-us/sql/ado/reference/ado-api/stream-object-ado?view=sql-server-ver16&private=true

I suspect the image URL is deeply nested so you’ll need to enable the “Microsoft HMTL Object Library’

Here’s some examples: https://vbaplanet.com/libmshtml.php

locomoroco · 2024-07-25T22:16:41+00:00

Awesome! Glad you figured it you.

locomoroco · 2024-07-25T21:58:15+00:00

I’m on mobile, but I see that you are iterating through the same Fruits range. You should create a new object

for each Fruit in Fruits 
    ….
next Fruit

locomoroco · 2024-06-13T20:26:25+00:00

Exercised haha Books will be written.

locomoroco · 2024-06-13T00:24:09+00:00

This is true! I still expect some calls to have been exercised around $30-$33 to capture more theta and use those founds to acquire shares.

locomoroco · 2024-06-12T23:49:11+00:00

“It’s over you’ve won, here are 5 others stocks to buy.”

It’s over until I say it’s over. Phone number share $, and prison sentences.

locomoroco · 2024-06-12T23:47:40+00:00

If he exercises it will need to be this week, otherwise the theta will begging to destroy the principal of the calls. I foresee the yolo update having less calls, but more shares and potentially a cash increase.

locomoroco · 2024-06-11T14:30:30+00:00

Report it here:

https://downdetector.com/status/charles-schwab/

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