2017 CTR sound system

ctrmofo

Banned
Banned
Joined
Mar 21, 2018
Threads
43
Messages
1,778
Reaction score
2,433
Location
planet earth
Vehicle(s)
'13 lambo lp550-2, '18 honda ctr cw (r-12321), 14' porsche cayman s, '16 porsche macan s, '13 mini jcw nme stage 1, '15 audi s3 apr stage 2, '15 audi q3, '12 monster 1100 evo, '16 triumph thruxton r, deposited for '19 lambo huracan performante
Vehicle Showcase
2
Country flag
Question for the techie guys here.

I bench tested the Rockford PBR300X1 using speaker line inputs off my “home stereo” (just a small mini system..... took a speaker out from that stereo into the car amp.
I used my car battery as my 12V and tested 12v at the power terminals on the amp.
I was using theP3SD4-8 P3 Punch Shallow sub as my “sub”

The amp didn’t turn on when I had the input signal active. Even injecting 12v to the “remote” termail the amp barely had enough power to move the sub.

My question is, does the car stereo speaker line differ from the home stereo speaker line in anyway?

I no longer have this setup and didn’t get a chance to tap into the car’s factory speakers
hmm i would say that the amp may not have turned on so could be low voltage coming from the battery you used. it may not have been high enough to trigger amp turn on, else the speaker line inputs didn't have the right voltage either.

it is very likely that the voltage of the speaker outputs from your home stereo that did not cause the amp to turn on since the amp was looking for that turn on signal from the speaker outs of the home stereo. if you swapped to "remote turn on" input but didn't change the jumper settings on the amp, then it wouldn't have turn the amp on either.
Sponsored

 

jinderC

hmm i would say that the amp may not have turned on so could be low voltage coming from the battery you used. it may not have been high enough to trigger amp turn on, else the speaker line inputs didn't have the right voltage either.

it is very likely that the voltage of the speaker outputs from your home stereo that did not cause the amp to turn on since the amp was looking for that turn on signal from the speaker outs of the home stereo. if you swapped to "remote turn on" input but didn't change the jumper settings on the amp, then it wouldn't have turn the amp on either.

Yes indeed. The battery was in my 2017 Si, the car was running so the voltage was excellent

I think you are right though, there must be a difference from the speaker level from auto to home systems that prevented the amp from turning on. When I inserted 12v into the remote terminal (jumper from positive terminal to the remote) the amp did power up but failed to drive the subwoofer. So odd.... I even cranked the volume to full blast on the home stereo and it made no difference.
 

armenls1

Senior Member
Joined
Feb 17, 2020
Threads
16
Messages
117
Reaction score
70
Location
Montreal, Canada
Vehicle(s)
'18 Civic Type R
Country flag
It’s not recommended with this setup for a key reason if you like you bass loud and big. The Pioneer sub you’re looking at - we’ve tested and there’s one problem. It works fine as either a 4 ohms load (wired in series) or 1 ohm load (wired in parallel). You cannot use it as a 2 ohms load. The problem is with high volume, the front face/cover of the sub will hit and rattle against the back of the stock plastic grill...really badly. We found this out by accident thus came up with Palindrome Labs R12321R deeper sub grill kit (more in thread below).

To your specific question, you’ll have to run the sub as a 4 ohms load which means you’ll be driving the amp at 300W RMS per specs you listed or as a 1 ohm load with amp at 800W RMS, which is way more than the sub can handle and will blow the sub.

Rule of thumb:
1) Take the sub’s RMS (never peak) spec and x 0.75 to get low end of amp power needed.
2) Take the sub’s RMS (never peak) spec and x 1.50 to get top end of amp power needed.

Therefore, the Pioneer sub above would need an amp driving 113W-225W to be most efficient and not blow your sub.

Here is the highly recommended thread for all your CTR audio needs of every speakers and many subs we’ve tested: https://www.civicx.com/threads/full...s-amp-center-channel-and-door-speakers.27310/

Could you elaborate on why the Pioneer TS-SW2002D2 8 cannot be used as 2ohms load when it's advertised as a 2ohms sub - mind you my intention is to install the sub with no added amp.
Just want some clarity on that. :)
Thanks!
 

slowride

Senior Member
Joined
Jan 7, 2016
Threads
9
Messages
950
Reaction score
642
Location
Midwest
Vehicle(s)
2018 PMM Type-R
Country flag
Could you elaborate on why the Pioneer TS-SW2002D2 8 cannot be used as 2ohms load when it's advertised as a 2ohms sub - mind you my intention is to install the sub with no added amp.
Just want some clarity on that. :)
Thanks!
That Pioneer sub is dual 2 ohm right? So, you have to run it in either series or parallel, and that gives you either 4 ohms or 1 ohm out of two 2 ohm coils.
 


kefi

oh shit waddup its dat boi
Joined
Jan 8, 2020
Threads
14
Messages
1,614
Reaction score
2,523
Location
Central Florida
Website
fk8.clinic
Vehicle(s)
2018 Type R
Build Thread
Link
Country flag
Any ideas how many amps the stock alternator puts out? I want to move my two Rockford Fosgate P2-12s from my RX8 into the trunk of my R, I imagine I can get a custom enclosure for 10th gen civic hatches in general but I question it's ability to handle 1000W of subs.
 

slowride

Senior Member
Joined
Jan 7, 2016
Threads
9
Messages
950
Reaction score
642
Location
Midwest
Vehicle(s)
2018 PMM Type-R
Country flag
Any ideas how many amps the stock alternator puts out? I want to move my two Rockford Fosgate P2-12s from my RX8 into the trunk of my R, I imagine I can get a custom enclosure for 10th gen civic hatches in general but I question it's ability to handle 1000W of subs.
Which amp do you have running those?
 

kefi

oh shit waddup its dat boi
Joined
Jan 8, 2020
Threads
14
Messages
1,614
Reaction score
2,523
Location
Central Florida
Website
fk8.clinic
Vehicle(s)
2018 Type R
Build Thread
Link
Country flag
Which amp do you have running those?
https://rockfordfosgate.com/products/details/p1000x1bd/

I also have a separate 4 (or maybe 5?) channel amp for the speakers. I went balls out and put full Rockford Fosgate equipment in my RX8 with an aftermarket Iraggi alternator and dynamat throughout the doors and trunk. I haven't checked, but I doubt the door speakers will fit and I'll need a fifth channel for the center speaker anyways - the door speaker amp I have right now I THINK is only four channel.
 

slowride

Senior Member
Joined
Jan 7, 2016
Threads
9
Messages
950
Reaction score
642
Location
Midwest
Vehicle(s)
2018 PMM Type-R
Country flag
The average draw on that amp is 65v according to the spec sheet at 13.8v for the subs alone, so adding in the 4 channel amp will tax it further but if you aren't ripping at full volume and trying to rip your own head off, I wouldn't worry too much about it at normal volume
Sponsored

 


 


Top