Jump to content
SAU Community

Recommended Posts

Hey guys and gals!

I'm planning to run my amp in my newly-purchased R33, without a sub. (there is far less room in the boot than my previous car)

I want to run two pairs of RCA cables from the headunit, into the boot, and into the amp, then run the speakers off the amp.

My question is: Will a headunit be able to fade front/rear when running like this? I'm under the impression that RCA line outs from a headunit are a "stable line", with no modification to the signal via the headunit (bass/treble). I do know that the RCA output volume was fixed with the speaker output volume when I was running a sub in my last car. (EDIT: they both changed volume together.)

Do headunits with dual RCA outputs allow you to fade front/rear via RCA?

Thanks!

Edited by RANDY
Link to comment
https://www.sau.com.au/forums/topic/86141-rca-cable-to-amp-question/
Share on other sites

Hi Randy

Yes you can control fade and balance from your head unit. If you have front & rear RCA outputs from your head unit, and the amp is four channel. My Alpine 9815 headunit also has RCA 5volt preouts for subwoofers, so the level of my subs can be controlled from the head unit. Hope that helps

cheers

Evil

Damo and Evil, thanks very much for the quick reply! I'm looking at a Clarion HU with the two pair of RCA outs, and I have a BOSS amp which has two pairs of RCA inputs. EDIT: That answers my question perfectly, thanks!

Cheers guys!

Edited by RANDY

Thanks again, guys! I spoke to a guy at Strathfield car radio before posting this up, and he also said that there are "bass tubes" that I can buy and fit in there.

I kinda reserved that space for an amp though... i'll keep you posted!

  • 2 years later...

Jah... since 2 years and 2 months ago when I posted this, i'm running a Kenwood mp3 headunit, with one set of RCA's under the carpet by the drivers side into a 130wrms Jaycar amp (bridged) into my old Sony sub. There was no way I could get sufficient low-end frequencies out of 6.5"s in the parcel shelf.

From the headunit, you can go round the passenger footwell, under the ECU in the kickpanel... from there, you can unclip the door-sill (plastic steppy thing that I never step on) and then unclip the carpet. Run them over the raised part that the seat rails bolt to, and then go to the back. Undo the two bolts holding the front seatbelt to the floor, and continue running it towards the rear seat. Remove rear seats (see tutorials on this, but it's easy).. from there, they can run under the seat and through an access hole that comes out on the left of your battery in the boot.

I bought my amp because it would fit nicely behind the false wall and sit next to the battery... my RCA's end there. ;o)

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • A few small updates since the previous post and lessons. I decided to do a little interior light upgrade on the 110. I quite like the iilumo items, even if they're a bit of a premium over other brands. You'll also note the Stedi Fogs, that will go into the S15 fog lights as I needed to match the bulbs since I got the new ones earlier. I hope they fit as the body is quite a bit longer than your normal bulb.  Annoyingly, I managed to trip the fuse, which normally wouldn't be an issue until I located the fuse. I can't say I've ever come across this. I had lucked out that someone nearby had a spare, but oddly enough Toyota dealerships seem to keep this in stock. I ordered some to keep in my stash and as luck would have it, someone else nearby tripped the same fuse so I passed on the favour.  I also did a little service on the 110 ahead of some additional work coming up. It's been annoying that Goleby's stopped carrying this particular HKS filter for the 110, so now I need to keep them on order from Japan. I also took the opportunity to install a bash plate and number plate riser. The plate riser is such a cheap but nice fix to help really tidy up the car. I'm tempted to now also replace my headlights, on this car. Both items were from Project Aero.    I also needed to replace the rear tyres on the 110, and after trying to get it aligned learnt that I need to replace some bushes in the front end, so that's next.  Closing out this update with a nicer picture as always! 
    • Yeah mate, never miss it.
    • Any going to watch World Time Attack at SMSP this year?
    • Appreciate the correction on the "ground", that will make a huge difference to looking at this. That makes complete sense about AF70/AF71 which is what I had come down to being the issue, one of these. I'll have another look in the ignition wiring when I get a chance next week. I'll also make up a jumper wire for running that AF73 test.  ECU is fine, relay itself is fine, pump harness is fine and the pump itself is fine. I am going to upgrade the Walbro 255 anyway with a DW300 I have since I need to replace the fuel sender and I'm going to upgrade the FPR with my chasebays kit ready for new plenum/injectors/dbw, but I'll get this working first. That's why this is so frustrating. 
×
×
  • Create New...