Easy install Powered Sub for $200

bluesman8266 · 10-08-2019, 04:44 PM

installed a Rockville Slimline 10 powered subwoofer for $200
The sub with wiring kit was $115 and a add a sub harness from Technic PnP for $85. Added that extra punch that I was missing. The harness made the job fairly straightforward and easy. No need to splice or effect any factory wiring. It doesn't take up much space, mounted on the back of the passenger back seat.

Zyzzthetic · 10-08-2019, 11:42 PM

nice mod, do you have the HK or base system?

bluesman8266 · 10-11-2019, 07:19 PM

Quote:

Originally Posted by Zyzzthetic

nice mod, do you have the HK or base system?

I've got the Harman Kardon. Have been really disappointed with the system for the cost. If I did it again I'd get the 8". This fit really tight here and I've got it backed way off from what it can do so I'm sure the 8" would be more than enough for me. Couldn't believe how easy it was with the harness.

Zyzzthetic · 10-12-2019, 11:47 AM

Quote:

Originally Posted by bluesman8266

Quote:

Originally Posted by Zyzzthetic

nice mod, do you have the HK or base system?

I've got the Harman Kardon. Have been really disappointed with the system for the cost. If I did it again I'd get the 8". This fit really tight here and I've got it backed way off from what it can do so I'm sure the 8" would be more than enough for me. Couldn't believe how easy it was with the harness.

I agree! My previous car was a 2011 328i coupe and the base system in that was on par or better than the HK in the 240i.

jpy1980 · 10-23-2019, 09:56 PM

I have an f80 m3 with the HK sound system. Would this work for my car as well?

bluesman8266 · 11-24-2019, 06:14 PM

Quote:

Originally Posted by jpy1980

I have an f80 m3 with the HK sound system. Would this work for my car as well?

Sorry for the late reply, you would have to check with Technic PnP for the adapter and check the measurements of the back of the seat for the sub. I went with the big one and wish I had went with the smaller sub I've got this one cranked way down and it still will vibrate the rearview mirror and would have been easier to fit.

Lozza47 · 11-28-2019, 02:01 AM

What did you do for the audio signal? Did you tap into the rear shelf speakers?

bluesman8266 · 11-28-2019, 03:12 PM

Quote:

Originally Posted by Lozza47

What did you do for the audio signal? Did you tap into the rear shelf speakers?

Did not have to tap into any wires, that's what the sub harness from Technic PnP does. You get low level RCA output just for the Sub. I originally thought that's what I was going to do, tap into the back speakers but this does it much better and no splicing.

bluesman8266 · 11-28-2019, 03:17 PM

Quote:

Originally Posted by bluesman8266

Quote:

Originally Posted by Lozza47

What did you do for the audio signal? Did you tap into the rear shelf speakers?

Did not have to tap into any wires, that's what the sub harness from Technic PnP does. You get low level RCA output just for the Sub. I originally thought that's what I was going to do, tap into the back speakers but this does it much better and no splicing.

Harness plugs in between the OEM amp and LOC converts the high-level OEM amp woofer signal outputs into low-level aftermarket amp signal inputs for a subwoofer.

MerlinMc · 11-30-2019, 12:40 PM

Bluesman, that is a very nice install. Thank you for sharing.

Is this the harness you used: https://technicpnp.com/product/hifi-...ub-harnessloc/

I have the HK as well though have swapped the amp for a BavSound.

mikeyymonster · 11-30-2019, 05:53 PM

Did you research other slim subs prior to getting this? Not sure if I've heard of this sub before. I've been wanting to add that extra punch too, but I absolutely hate rattles. Do you still get rattles turning down your sub?

bluesman8266 · 12-01-2019, 05:27 AM

Quote:

Originally Posted by mikeyymonster

Did you research other slim subs prior to getting this? Not sure if I've heard of this sub before. I've been wanting to add that extra punch too, but I absolutely hate rattles. Do you still get rattles turning down your sub?

yes I did a lot of research. I had not heard of this sub before also. Everything I heard and read was great. I've had two other powered subwoofers and I think this is the best, definitely for the money. You can get rattles from any sub if it has any power. The rattles are from things in the car, either turn it down or fix what's loose. I pulled the back headrests. They were the only thing rattling and nobody is back there setting anyway.

bluesman8266 · 12-01-2019, 05:38 AM

Quote:

Originally Posted by MerlinMc

Bluesman, that is a very nice install. Thank you for sharing.

Is this the harness you used: https://technicpnp.com/product/hifi-...ub-harnessloc/

I have the HK as well though have swapped the amp for a BavSound.

This is what I have, HiFi (676)/HK (674) add-a-sub harness/LOC. They are very specific for each vehicle. This is for my 2019 m240 with HK. Only problem I had was having it plugged in tight. I have worked with things like this many times and had to connect it several times before I got it tight.

jpy1980 · 12-05-2019, 08:12 PM

Hey thanks for all the info! I went ahead and purchased your setup for my f80! I need more booooom in my life haha.

MerlinMc · 12-14-2019, 09:52 AM

Bluesman, I am doing the small install as you with the 8" version of the subwoofer.

Question: did you use this connector with your install?

Thanks!

bluesman8266 · 12-22-2019, 11:49 AM

Quote:

Originally Posted by MerlinMc

Bluesman, I am doing the small install as you with the 8" version of the subwoofer.

Question: did you use this connector with your install?

Thanks!

no, the harness let's you use the RCA and the rest is just power and ground.

bluesman8266 · 12-22-2019, 11:51 AM

Quote:

Originally Posted by bluesman8266

Quote:

Originally Posted by MerlinMc

Bluesman, I am doing the small install as you with the 8" version of the subwoofer.

Question: did you use this connector with your install?

Thanks!

no, the harness let's you use the RCA and the rest is just power and ground.

sorry for the late reply.

jpy1980 · 12-26-2019, 12:01 AM

How did you get it to stay up on the rear of the seat? I drilled it into the back of my seat and when I put the start back up, the weight made it fall back down. The screws back out due to the weight. I’m using the same screws provided by Rockville. Thoughts?

bluesman8266 · 12-26-2019, 10:05 AM

Quote:

Originally Posted by jpy1980

How did you get it to stay up on the rear of the seat? I drilled it into the back of my seat and when I put the start back up, the weight made it fall back down. The screws back out due to the weight. I’m using the same screws provided by Rockville. Thoughts?

I marked and predrilled the holes small then used wood screws about a inch long due to the thickness of the sub's feet and the covering for the seat. Put them in by hand slow so it doesn't snag the material.

jpy1980 · 12-26-2019, 02:31 PM

Quote:

Originally Posted by bluesman8266

I marked and predrilled the holes small then used wood screws about a inch long due to the thickness of the sub's feet and the covering for the seat. Put them in by hand slow so it doesn't snag the material.

Ah, so you didn't use the screws that were provided with the kit?

jpy1980 · 12-26-2019, 02:32 PM

Also, mine doesn't hit as hard as I want. What are your settings on in your amp as well as the HK system EQ?

MerlinMc · 12-27-2019, 08:23 PM

Quote:

Originally Posted by bluesman8266

no, the harness let's you use the RCA and the rest is just power and ground.

Thanks!

10-08-2019, 04:44 PM	#1
bluesman8266 Private 46 Rep 85 Posts Drives: M240i Join Date: Nov 2018 Location: OH iTrader: (0)	installed a Rockville Slimline 10 powered subwoofer for $200 The sub with wiring kit was $115 and a add a sub harness from Technic PnP for $85. Added that extra punch that I was missing. The harness made the job fairly straightforward and easy. No need to splice or effect any factory wiring. It doesn't take up much space, mounted on the back of the passenger back seat. Attached Images
	Appreciate 3 Zyzzthetic146.50 MassNerd171.00 _M228i1.50 Tweet Quote

10-08-2019, 11:42 PM	#2
Zyzzthetic 6 speeeeeeeeeed 147 Rep 214 Posts Drives: 2017 M240i 6-Speed Manual Join Date: Sep 2019 Location: Calgary iTrader: (0)	nice mod, do you have the HK or base system?
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10-23-2019, 09:56 PM	#5
jpy1980 Lieutenant Colonel 1580 Rep 1,976 Posts Drives: 2015 BMW M3 -Smurfy Blue Vinyl Join Date: Sep 2018 Location: Los Angeles iTrader: (3)	I have an f80 m3 with the HK sound system. Would this work for my car as well?
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11-28-2019, 02:01 AM	#7
Lozza47 Private First Class 38 Rep 129 Posts Drives: 2013 F30 335i / 2011 E92 M3 Join Date: Sep 2019 Location: Melbourne iTrader: (0)	What did you do for the audio signal? Did you tap into the rear shelf speakers? __________________ 2011 E92 M3 - Mineral White - Pure Edition I
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11-30-2019, 12:40 PM	#10
MerlinMc Lieutenant 114 Rep 448 Posts Drives: 2020 M240i Join Date: Dec 2007 Location: New Braunfels, TX iTrader: (0)	Thanks & question Bluesman, that is a very nice install. Thank you for sharing. Is this the harness you used: https://technicpnp.com/product/hifi-...ub-harnessloc/ I have the HK as well though have swapped the amp for a BavSound.
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11-30-2019, 05:53 PM	#11
mikeyymonster Major 526 Rep 1,078 Posts Drives: 2021 M2C Join Date: Apr 2014 Location: California iTrader: (6)	Did you research other slim subs prior to getting this? Not sure if I've heard of this sub before. I've been wanting to add that extra punch too, but I absolutely hate rattles. Do you still get rattles turning down your sub? __________________ 2021 M2C 2014 M235i Instagram: @mikeyymonster
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12-05-2019, 08:12 PM	#14
jpy1980 Lieutenant Colonel 1580 Rep 1,976 Posts Drives: 2015 BMW M3 -Smurfy Blue Vinyl Join Date: Sep 2018 Location: Los Angeles iTrader: (3)	Hey thanks for all the info! I went ahead and purchased your setup for my f80! I need more booooom in my life haha.
	Appreciate 1 bluesman826646.00 Quote

12-14-2019, 09:52 AM	#15
MerlinMc Lieutenant 114 Rep 448 Posts Drives: 2020 M240i Join Date: Dec 2007 Location: New Braunfels, TX iTrader: (0)	Question for Bluesman Bluesman, I am doing the small install as you with the 8" version of the subwoofer. Question: did you use this connector with your install? Thanks! Attached Images
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12-26-2019, 12:01 AM	#18
jpy1980 Lieutenant Colonel 1580 Rep 1,976 Posts Drives: 2015 BMW M3 -Smurfy Blue Vinyl Join Date: Sep 2018 Location: Los Angeles iTrader: (3)	How did you get it to stay up on the rear of the seat? I drilled it into the back of my seat and when I put the start back up, the weight made it fall back down. The screws back out due to the weight. I’m using the same screws provided by Rockville. Thoughts?
	Appreciate 0 Quote

12-26-2019, 02:32 PM	#21
jpy1980 Lieutenant Colonel 1580 Rep 1,976 Posts Drives: 2015 BMW M3 -Smurfy Blue Vinyl Join Date: Sep 2018 Location: Los Angeles iTrader: (3)	Also, mine doesn't hit as hard as I want. What are your settings on in your amp as well as the HK system EQ?
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