Amplifier without RCA?

Jeessy1 Posted messages 32 Status Member -
Jeessy1 Posted messages 32 Status Member - 12 Dec 2016 at 21:35

Hello,

I own a Peugeot 207, and I recently installed a car radio with a touchscreen, built-in GPS, USB, SD, etc. The only issue is that I don't have RCA output for my amplifier... I've read on several websites that there are little boxes that convert speaker outputs to RCA... so I ordered one... it worked well for 2 weeks, and then suddenly nothing... I ordered another box, but not from the same supplier... same issue, it worked for 3 weeks and then stopped... Everything seems to be properly connected; you don't need a PhD to connect 4 wires... Anyway, that's not the question, I would like to know if anyone has another solution...

I've also read on other forums that some amplifiers have a 'high level' input. I believe I have that on mine... but how do I use it?

Here is the back of my amplifier.
Can you help me? ...
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Answer 1 / 7

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Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201

Hello and welcome,
A speaker output is an amplified signal whereas a RCA output is a non-amplified 'line' signal.
When you say "nothing more," what do you mean? Broken amp? Or broken box?
The "high level" input, that means "high level" in French, is an input that accepts an amplified signal (speaker output) which is perfectly suitable in your case.

I call a spade a spade *
*in French in the text
4
1. Jeessy1 Posted messages 32 Status Member 3
  
  Thank you for your response. When I say nothing more, it's the box that shuts down... My amplifier works properly, it was in my old car, and I tried it in a friend's car who has a unit with an RCA output.
  
  For the high level input, is there a specific way to connect the speakers?
  
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2. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  The casing must not have been able to handle it, especially if you turned up the volume of the car radio.
  For the high-level input, you need to respect the polarity.
  Don't you have a photo? ... if possible, not blurry ..;;-)
  
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Answer 2 / 7
Jeessy1 Posted messages 32 Status Member 3

Well, that's what I thought, so for the second unit, I deliberately didn't turn up the sound too high... but depending on the music I'm listening to and the bass that there is, the unit shut off from time to time, and then afterwards, no more bass :(((

here it is in better quality! :)
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Answer 3 / 7
Jeessy1 Posted messages 32 Status Member 3

I just came back from Norauto... I asked a guy for advice, and I already had the impression he was treating me like an idiot... anyway, I explained my situation to him, and he told me I probably burnt out my speaker output with that infamous box, and that the best thing to do is to go to a repair shop..

So, I’m not really any further ahead, basically..

What do you think?
1
1. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  I think that the sellers at Nortoto are idiots, and if I understand correctly:
  "I have probably burned my speaker outputs with that infamous box,"
  Are you talking about the speaker outputs of your car radio or the RCA inputs of your amplifier???
  Is your car radio not working anymore?
  
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2. Jeessy1 Posted messages 32 Status Member 3
  
  If the car radio works perfectly... and I told you what he told me, he said "it's probably your speaker output that's burnt out"... I don't know what he was talking about.. I assume he was talking about my RCA input.
  
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3. Jeessy1 Posted messages 32 Status Member 3
  
  So basically what do I do? Do I change positions? Do I change the amp? lol
  
  I don't really know what to do anymore, I think I'm going to resign myself to taking down my setup...
  
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Answer 4 / 7
Jeessy1 Posted messages 32 Status Member 3

there is no green or red light, the light is blue and it stays blue... so I don't know if it's safe or not.

--
Posted from CCM Live forum for Android
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1. letotof Posted messages 2149 Status Member 482
  
  give me the reference of your amplifier
  
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2. Jeessy1 Posted messages 32 Status Member 3
  
  Alpine MRP-M350
  
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3. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  And a notice, in French:
  http://vault.alpine-usa.com/products/documents/OM%20MRP-M350.pdf
  That being said, it is indeed stated that it can be connected to a high-level input.
  Have you checked the fuses?
  
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4. Jeessy1 Posted messages 32 Status Member 3
  
  I already went to get the manual. And yes, the fuses are the first thing I checked, they're all good.
  
  --
  Posted from CCM Live forum for Android
  
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5. Jeessy1 Posted messages 32 Status Member 3
  
  and if the RCA input is dead, the high-level input won't work either, right?
  
  --
  Posted from CCM Live forum for Android
  
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Answer 5 / 7
Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201

Well, there you go, all you have to do is find the right connector and respect the polarities (the + on top)

--
I call a cat a cat *
*in French in the text
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1. Jeessy1 Posted messages 32 Status Member 3
  
  And where could I find this connector? If I had known it was that simple... pufff :(
  Moreover, I have always wondered what this port was for...
  
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2. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  Pufff too, you wasted your time for nothing
  At Nototo or Feu Rouge? It would be best to go there with your amplifier ...
  Or you could tinker with some small crimping terminals:
  https://rrs-direct.com/pub/media/catalog/product/cache/3/image/9df78eab33525d08d6e5fb8d27136e95/c/o/cosse-longue-femelle.jpg
  
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3. Jeessy1 Posted messages 32 Status Member 3
  
  Yep! I tried to hook it up, like, on the fly, but there's nothing... I don't know if my connections are correct! I'm going to see about going to a store like Feu Vert or something.
  
  Thanks for your help! ;-)
  
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4. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  But you're welcome, and isn't there a switch between RCA input and high level? Do you have the manual for your device?
  
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5. Jeessy1 Posted messages 32 Status Member 3
  
  Unfortunately, no manual, it's an amp that my ex gave me... and no switch.
  
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Answer 6 / 7
Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201

You can try connecting the speaker outputs of the car radio directly to the RCA inputs, but be careful not to turn the volume up too high on the car radio to avoid saturating the inputs of the amp.

--
I call a spade a spade *
*in French in the text
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1. letotof Posted messages 2149 Status Member 482
  
  Hi
  
  can you show us the case you installed and the one you ordered or received to replace the first one please, thanks.
  
  The amplifier may have gone into protection mode, is the green indicator that shows it is on lit green or red, and have you tried the speaker outputs of the car radio to see if they still work? Can you test your amplifier on another car like you did before?
  
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2. Jeessy1 Posted messages 32 Status Member 3 > letotof Posted messages 2149 Status Member
  
  There is no green indicator on this model. It's only a blue indicator...
  
  https://www.amazon.fr/gp/product/B00H3IMHL2/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1 : The first box I connected
  
  https://www.amazon.fr/gp/product/B0029XY3SG/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1 : the second one.
  
  And Andy31200 ""You can try connecting your car radio speaker outputs directly to the RCA inputs"" How do you want me to connect a speaker output to an RCA?
  
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3. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  A speaker output.
  Take this:
  http://www.sbsmobile.it/_siteImg/HLA2055_PAN_1.jpg
  Cut the cable, strip the wires and you will be able to connect it to the output of your amplifier, but once again, be careful with the volume of the car radio.
  
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4. Andy31200 Posted messages 26918 Registration date Status Moderator Last intervention 12 201
  
  By the way:
  https://images-na.ssl-images-amazon.com/images/I/51scngDTaxL._SL1000_.jpg
  The adapter is connected in series to the output of the car radio that powers a pair of speakers, did you do it that way?
  
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5. Jeessy1 Posted messages 32 Status Member 3
  
  For a practical question, I accidentally pierced myself on the speaker terminal behind the unit. I first looked at which wire corresponded to + and which wire corresponded to -.
  
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Answer 7 / 7
Jeessy1 Posted messages 32 Status Member 3

Hello, I'm getting back to you because the day before yesterday I tried again to make my amplifier work as one of you suggested: by connecting my phone via a Jack to RCA plug. And there, miracle, it works!

So I decided this time to reconnect everything, but to use the "high level" input this time. Everything works very well, except that the amplifier still cuts off during playback...
Where could this problem come from?

The subwoofer is not the one that goes with the amplifier; could that have an impact?

HEEELP-ME PLEAAASE :((((
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1. letotof Posted messages 2149 Status Member 482
  
  No, it can't come from that; it needs to be lowered. However, if your subwoofer is rated at 2000W RMS and your amplifier only provides 1000W RMS, the amplifier will shut down because it isn't powerful enough; it goes into protection mode. If that's not the case, have you tried lowering the gain on the amplifier?
  
  1
2. Jeessy1 Posted messages 32 Status Member 3
  
  The amplifier I currently have is 700W. The subwoofer that is connected to it was meant for an amplifier that is actually 800W.
  
  --
  
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Amplifier without RCA?

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