You have sound over the speaker level outs? The JBL will be pushing two of the subs and the rockford one bridged. Testing the head unit's shield ground connection: If you want to check the shield ground, use an ohm meter and make sure that there is continuity between the case of the head unit and the RCA shield. New comments cannot be posted and votes cannot be cast. 9. Split RCA jacks with LOC. simpler solution is to not run rear speakers at all. There should be no output because the left RCA cable between the head unit and the next component is faulty. Your HDTV also has a headphone output, which you can connect to stereo RCA inputs using a simple stereo 1/8" to RCA adapter cable.. Press J to jump to the feed. When we install an aftermarket radio in your dash and connect it to the amplifier, we have to make at least one adjustment to ensure everything will work properly. if still no sound, then its your amp, http://www.amazon.com/3-5mm-Mini-Plug-Computer-Stereo/dp/B000LMFS7M. head unit w/ 2 outputs, mono + 4 channel - Hey guys, I am doing my install this weekend, ( still waiting for shipping). Keep in mind this subwoofer was working fine. Sometimes that's an option. Q&A, Advice, Tips, tricks and tech welcome! Another issue you can run into with factory head units is the lack of RCA outputs. My subwoofer RCA voltage is as follows, Volume 38 with subwoofer level 0 = 0.59, vol 38 sub level 10 = 1.86. 3 Ways To Hook Up Amp Without RCA Jacks. Ok, thanks for the tip. As shown in the above diagram, you can connect 2 channels to a 4 channel amp using either the speaker level inputs wired in parallel or by using simple RCA adapter cables. I tested my RCA cables output voltage. Ok so i have a high's amp and a subwoofer amp but only have one rca jack output on my head unit!!! Hey mate, I'm sure it wouldn't be the amp. I have just purchased the aftermarket head unit for Audi A3 8P 2012 model which has Touchscreen , Nav , e.t.c i have connected the headunit with the canbus cable which was included and have also connected the RCA cable as well - everything seems to work fine . ? Two sets on both that each say front and rear. But if i hook it to the "sub out" RCA terminal. Use a DMM to check AC voltage to determine if there is a signal, not headphones. Are you sure the amp is working properly? Connect Speaker Wire To RCA Adapter. Just to clarify there is a source playing? and is 20-25 rms watts per channel enough to power the tweeters … get a cable thats 3.5mm (headphone) to rca left /right. If you want to increase the number of RCA jacks or even create an RCA jack if your system has none, LOC is going to help you in both the cases. if you must for some reason, i prefer to combine front and sub on the same output so I can still use a fader to keep rear speakers much quieter than the fronts. Here are a couple of choices: 1/8" (3.5 mm) headphone plug to stereo RCA plugs (analog) - 5 feet long fiberoptic cable (digital) - 6 feet long You could plug either of these cables (analog or digital) into your home theater system, … ... i had a salesmen push a pioneer head unit on me extremely hard, its only 2.2v and i needed a head unit for well over 2,000 RMS in the 6-8v range. Alibaba.com offers 961 head unit rca output products. I'll have another read of the manual too, good suggestion. No head unit typically has more than about 60watts of total output power because more would require a real DC-DC power supply (which does not fit in a head unit easily). on the returned of the top unit, there is an output, you hook up a RCA cable to that output. To check this, you can simply hook up a set of good RCA cables to your head unit and amp. that's a great idea which i will try out once that cable gets to my house but I feel like the head unit is at fault for some reason because I'm not getting any signal coming from the RCA's connected to my head unit. I looked and couldn't see anything to do with "SP-P/O" in my settings. nothing happens. I tested the RCA cable from the head unit with a pair of earphones too, nothing. If that causes the light to turn off, replacing the RCA cables will fix the problem. So far, it's fried a PG Xenon 10D2 sub (450 watts), an Alpine Type-R (500 watts) and an Audiobahn Dub 1000 (600 watts). They are used to transfer an output signal into your car amplifier through rca cables, if RCA sockets on your CD player are faulty you will result in no music to be heard. I'd read the manual and mess with settings first because its the easiest thing to have wrong and the easiest thing to test/fix. I'm installing my new head unit and amp but behind both they're rca jacks output from head unit and input at the amp. Does it matter where I plug into? 1. then connect your phone directly to amp. For The Car Audio and Video enthusiast! Pioneer head unit RCA output not working. otherwise you can buy a 4 channel amp with RCA outputs as well - to feed the signal through to the sub amp. How do I check if the amp works with a different source? The amp is a Phoenix Gold Xenon 600.1(600 watts x 1 @ 1, 2 or 4 ohms). I directly plugged the speaker to the back of the radio of that left ouput to by pass the car wiring between the speaker and the radio harness. It's a Pioneer MVH 285BT head unit that's having a problem outputting sound through the RCA leads (I've confirmed this by connecting the leads up to a little speaker). This is a quick and simple way to test whether one speaker is truly bad or not. Hello, I have a JVC NX7000 and I thought a speaker was blown. Make sure that the RCA cables are disconnected from the RCA jacks on the head unit. I have ran RCA cables to both amps and have the subwoofer working. I'm gonna have to clean my pants soon cause that made me so wet. There are almost three methods available to hook up your amplifier without using any RCA jacks. For example, if your system has one built-in RCA jack, you connect LOC to any other output of the head unit and the output of LOC will be RCA jack. Anyway my dad somehow made an adapter so that jack could plug into the RCA plug of my [custom] subwoofer. I used a multimeter and probed the middle piece and shell of the RCA but couldn't find any AC/DC voltage. Made sure to turn off any high pass filter you were using previously? On the P80 the fuse is on the top, right beside the RCA plug connector thing. 1. This guide can be used to test both speaker and subwoofer RCA preamp outputs. I'm using this head unit and I'm trying to use install a new amp and sub to it. I turned off all filters and also reset the head unit settings to make sure of it. :-(, New comments cannot be posted and votes cannot be cast. I bought a head unit but I didnt know it had only 2 sets of RCA outputs. I am currently trying to run a JBL 300.1 amp and a rockford 200S to run 3 10" subs. So my question is how or what do i need to do to keep that head unit? one output on car radio head unit not working. For The Car Audio and Video enthusiast! pwp347. I was wondering about the RCA cable. It's a Pioneer MVH 285BT head unit that's having a problem outputting sound through the RCA leads (I've confirmed this by connecting the leads up to a little speaker). This output cable is not RCA but a single jack (like a male headphone jack). Thanks for the help! … pwp347. So... the problem is either the Head unit or the RCA cable. My bet is a setting if you confirm there is no signal and there should be. ... no not correctly anyway, if I use a jack output from the headphone port on my laptop to the external speakers via rca and use master out on the pc it works. because the rear left speaker has no sound. Just ran to best buy after to get the cord and the amp is working. Is this why theres no signal coming from the head unit to my amp or is it because of something else? You have only one set of RCA outs that can be set to rear or sub and probably off as well. Would I need two sets of jacks so I can do front and rear rca jacks input and output? Head-unit RCA out is not working? There is only 2 outputs on the back (one for left and one for right labled for subwoofers). Then measured the speaker output of the amp with a multimeter. On some it's underneath the PCB but it's usually not far from the RCAs anyway. straight to the unit via rca/trs/xlr just to make sure. I bought a new subwoofer and amplifier today, but the "sub out" output doesn't seem to be working. There is only 2 outputs on the back (one for left and one for right labled for subwoofers). Sometimes, when power is interrupted to the head unit's 'constant' power wire (yellow on most head units), the microcontroller can get 'confused' and the head unit won't power up. I previously used those 2 outputs for all my stock speakers but now that I want to add a sub to my sound system, I'm using line converters so I can use those 2 RCA outputs on the head unit for my sub. That is why I'm changing the head unit to an aftermarket so I can run a low level signal (RCA's) to the amp. Looks like you're using new Reddit on an old browser. The max volume is 40 on my headunit. Archived. Head-unit RCA out is not working? For example, let's assume that the right channel does not work when connected to the right speaker, but the left channel works fine when connected to the left speaker. I set the gain to the lowest because I was trying to match the gain with a 50hz test tone but the amp's speaker outputs receive 0 AC/DC voltage. If this happens, pushing the reset button can sometimes reset the processor and allow the head unit to function correctly. Edit: just looked again at the pdf, the load impedance was for a different HU... but i'm still confused why theres no signal coming from the RCA cables. Using this method, you can add an amplifier to the old audio setup of your car. Posted by 2 years ago. The final impedance on my sub is at 2 ohms but it says the head unit only has a 4-8 ohm load. My head unit, Blaupunkt BPV 755 only has one set of RCA jacks. Press question mark to learn the rest of the keyboard shortcuts, 07' CRV>AvinUSA HU> C2400.1D @1ohm > 2- SA-12's in 3.8cuft @32hz. Are the rca outputs turned off via the head unit? Q&A, Advice, Tips, tricks and tech welcome! Pioneer head unit RCA output not working. So my RCA outputs are not dead. If you are unable to find any problems with your speakers, RCA patch cables that are grounded out or otherwise faulty can also cause the protect light to come on. A wide variety of head unit rca output options are available to you,