08-25-2023, 12:51 PM | #1 |
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Compact Subwoofer Installation
The woofer is a Kicker Solo-Baric L7S, 8" 2 Ohm, wired for 1 Ohm 450 RMS
Installation on 688(HK) system. AMP is Kicker Key 500.1, 1ohm 500 RMS, no need for LOC, also has DSP to correct missing frequencies. Bolt is M8 X 1.25 20mm, bracket is 3DP. Mounted Amp to bracket with Dual Lock SJ3550. Needed more than the 3' of neg cable from crutchfield. https://www.amazon.com/dp/B08R3BFZ27...t_details&th=1 https://www.amazon.com/dp/B095RTDGSL...t_details&th=1 https://www.amazon.com/dp/B07Z8Q6B7N...roduct_details I have been using an 8" kicker for years, balances out any system. If you want to rattle your doors off, then this isn't for you. You also need to Deactivate ASD with Bimmercode, otherwise you will hear it through the sub. Last edited by Ruebarb; 11-11-2023 at 11:57 AM.. |
08-26-2023, 07:45 AM | #3 |
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The amp has a built in LOC, it accepts the high level or low level signal. Also don't need a 12v remote turn on work. Uses DC offset, goes on and off instantly with the radio. Truly all in one, did wish it had a 500 RMS 2 ohm model, but the 300 2ohms is enough. I got the gain to make the 300 but will start clipping if you go past it.
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08-26-2023, 09:56 AM | #4 | |
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08-26-2023, 03:11 PM | #5 |
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08-26-2023, 04:12 PM | #6 |
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08-28-2023, 07:48 AM | #7 | |
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Same, gain is adjusted low. I'm going to set it up again, have an osciliscope on the way, I was using voltage and the built in gain clipping light, also using the -10db tone this time. I may also make the adjustmets at 60% vs 75% volume. If the RMS of the woofer was closer to that of the amp, this likely would not be an issue. |
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08-28-2023, 07:57 AM | #8 | |
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It has a max input voltage of 5v, so I used a dmm to set the LC2i Pro LOC output to around 4.9v, which allows me to keep the amp gain at the bare minimum. Do you already have a ported box? If not, you can squeeze more output from your setup by switching enclosures. |
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08-28-2023, 09:47 AM | #9 | |
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08-28-2023, 10:01 AM | #10 | |
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Skar Audio SK1X12V Single 12"... https://www.amazon.com/dp/B075LSTK6L...p_mob_ap_share |
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09-02-2023, 11:46 AM | #12 |
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https://www.crutchfield.com/S-fduNZG...Subwoofer.html
Let's say I want to do a simple amp/sub premade combo like what's in the link above just to add a little extra. What would I need to buy? Power and ground wire Tenchic PNP kit? (https://technicpnp.com/product-categ...eries-g4x-g87/ Which one? I don't know what an LOC is but do I need one? It's been 20 years since I've done audio so I'm not up to date with this stuff
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09-03-2023, 11:20 AM | #14 | |
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The LOC is a line out converter, since our radios don't have rca (low level) outputs, we need to use a tap or the pnp harness to get the (high level) signal from the factory wire. You can use a LOC to convert the factory high level output to a RCA. Then send that to a standard amp. Some amps can now receive a High level signal, like the Kicker Key 500.1, so you don't need to convert it, therefore you don't need a LOC. You no longer need to use a remote 12v signal from the ignition to turn on the amps any more, this Kicker Key senses the factory signal and goes on and off with the factory radio. Materials: simply, speaker and power/grnd wires with lugs, fuse holder, amp that can receive high level signal, PNP harness, crimp/solder, basic wiring supplies Last edited by Ruebarb; 09-03-2023 at 11:32 AM.. |
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09-03-2023, 11:39 AM | #15 | |
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Things have changed lol I'll do some looking and see what I want to go with
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'22 M240i BSM, Shadowline, Black 791M wheels, Red Calipers, ///M Carbon Front Lip, ///M Carbon Spoiler, ///MCarbon Door Sills, Milltek Catback w/Black Tips, Dinan Carbon Intake/Engine Cover, AA Catted DP, Dalher Valve Controller, OEM+ Strut Bar, Red Start/Stop, Floating center caps, TLG Mud Flaps, Black Badges, Led Projectors, 50th Emblems, Carbon Diffuser/Mirrors w/smoke signals/Side Wings/Cooling Shroud/KIES fire extinguisher, Yellow DRL
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09-03-2023, 11:47 AM | #16 | |
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This PNP https://technicpnp.com/product/hk-op...oster-systems/ |
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09-03-2023, 05:10 PM | #17 |
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Pretty much what Ruebarb told you.
If the amp has high level inputs then you can get away with only the Technic PNP harness and no LOC. The only downside is you may have problems not having an amp turn-on lead. If the amp has only RCA inputs, you'll need an LOC.. Most prefer the LC2i Pro as it allows you to adjust/compensate for the bass roll-off some manufacturers do when you crank the volume. With the LC2i, you're also guaranteed to not have any amp turn-on issues as it provides an amp remote turn on output that it uses the signal leads to detect when the radio is on. I addition to that, power wire, inline fuse holder, speaker wire I highly recommend adding a sub, it's a night and day difference. |
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09-03-2023, 05:22 PM | #18 |
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Thanks Ruebarb MPR
I liked that 2 slim 12 downward kicker box. Don't have to worry about hitting speakers and still have plenty of trunk I'll see what the next few weeks brings and do a little more research
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'22 M240i BSM, Shadowline, Black 791M wheels, Red Calipers, ///M Carbon Front Lip, ///M Carbon Spoiler, ///MCarbon Door Sills, Milltek Catback w/Black Tips, Dinan Carbon Intake/Engine Cover, AA Catted DP, Dalher Valve Controller, OEM+ Strut Bar, Red Start/Stop, Floating center caps, TLG Mud Flaps, Black Badges, Led Projectors, 50th Emblems, Carbon Diffuser/Mirrors w/smoke signals/Side Wings/Cooling Shroud/KIES fire extinguisher, Yellow DRL
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09-03-2023, 08:46 PM | #19 |
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Vudumonkey25 I made some edits to my post that you may not have seen. Just make sure you confirm you can turn the amp on before buying an all in one unit. Not sure if those handle the power-on/remote-on factor and may need a true remote on lead from an aftermarket headunit.
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11-05-2023, 03:09 AM | #20 |
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Here's my setup for a compact sub. It's a Dayton audio reference 10" in a .8 cuft truck box. I went with the CT Sounds 1500.1D amp because it's cheap clean power. It also dynos favorably on Williston Audio, and it has adjustable boost and boost frequency which allows this woofer to play basically flat to 25hz at levels that are likely to cause hearing damage. Not ideal but I rubber mounted the amp on the back of the subwoofer box to hide it from view but also make it easier to adjust with the seat down. I secured everything with Velcro under the box to the carpet and brackets to the top and floor of the trunk. You could roll this car over and it wouldn't move the sub an inch.
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11-05-2023, 03:50 PM | #22 |
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Thanks! So the story behind the M Logo. The box is made by B Box and it had this stupid little aluminum brand sticker on it, which I thought was just temporary. Well when I peeled it off it was actually hot glued on and looked like arse. Turns out the M Logo is exactly the right size to cover it up.
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