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BigJimnyMeet (North) 2024 (12 Jan 2024)


BigJimnyMeet 2024

14th July 2024
Parkwood Nr. Leeds

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More first world problems, weight Vs tunes?

  • Lambert
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08 Jul 2022 05:36 #243993 by Lambert
Bit of a quandary, Temeraire is currently fitted with some nice but standard size speakers which with the eq set correctly are not without merit. However there's a limit to the lowest frequency response to expect from a 4 inch cone. To that end I'm thinking about 6x9s in the rear deck foot well behind the seats. These would be full range and I would high pass filter the front speakers with a passive, and adjust the low pass on the sub to stop it working so hard. I'm trying to get my head round the weight implications of making a suitable enclosed box for the 6x9s as I would want them sealed for the music I love. This could eat the 20kg spare room I have especially if I find I need to amp the 6x9s but that's mission creep and I'm not there yet. This also leads into finding a 6x9 that is happy with 60w RMS to avoid an amplifier?

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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08 Jul 2022 13:06 #244003 by Scimike
I must admit I am not 100% sure what you are asking.
To me reads like you don't want to add more than 20kg to "box in" the speakers, but then I don't understand why this is an issue unless they are on the roof rack
Sorry if I am being more confused than normal, just trying to understand your wants on the off chance I can help.

Yokohama Geolanders, Sony head unit, NAUTILUS Air Horn, DRL conversion, Rear cargo space, Elvis Bobblehead, transfer Guard, Indian hanging Elephant, Koni Heavy track dampers, Custom SS exhaust, Voodoo Doll, Adventure Rack with LED ight bar, vintage ERIBA caravan usually attached (yes it's slow)

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08 Jul 2022 15:13 #244007 by Lambert
For clarification in its current form this Jimny is 20 kg lighter than the last one which is great for both payload and not making a mess of the land on the farm which ought to be the main priority.

However while the stereo is currently not bad it starts to show its limitations when you push it beyond half volume. To a normal person that is not a big deal. I'm not normal. Music is not loud until you can feel it in your chest. And that's my issue is trying to reconcile the 2.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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08 Jul 2022 15:27 #244008 by fordem
Many years ago I adopted the position that attempting to create a "HiFi environment " in a car was more headache that it was worth. There will always be compromises, due to limitations that are in many cases, unavoidable.

Let's start with cabin size (which you cannot change) and it's dictates on speaker placement. As you've pointed out there is a limitation on the low frequency response you can get from a 4" driver, you mention that you're using "some nice, but standard sized speakers", which suggests you've upgraded, perhaps to a coaxial or similar, which would have the tweeters, more or less pointed at your ankles - far from ideal.

Another option is separates, with the tweeters mounted up on the "sail panels" - this incidentally is something I have considered, among other reasons I have an older pair of Kenwood separates with 4" drivers and 1" tweeters - this option however, has the tweeters physically separated from the mids, and causes a shift in sound stage, added to which one tweeter is considerably closer to each of the front seat listeners than the other, and these, as I suggested earlier are unavoidable situations.

I may yet install those Kenwoods, but for now all I've done is add a small active sub under the driver's seat to reinforce the bottom end, the car is not the quietest of environments, I have a transfer case whine, that maybe I'll try to tame by adding more padding under the transmission tunnel carpeting, but all in all, I recognize that I'm not in the car for long enough periods to put any serious effort into sorting it out.

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08 Jul 2022 15:46 #244009 by Lambert
Historically I have always had fully amped systems in cars that weren't for work and have only in recent years of Jimny moved to a high power head unit because of the space constraints. What I also have difficulty with is the local Tarquin brigade in daddies amarok being able to drown my none standard system, I find it an affront to my masculinity

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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08 Jul 2022 17:57 #244010 by Scimike
Ok thanks for taking the time to clarify for me.
Don't think I can help, but 20kg is not much.

Can't you put the Jimny on a diet and bin all none essential items?

Do you need the passenger seat, how about a custom light exhaust, find  tyres that are lighter than yours or just drive with the tank half full, 4 gallons less is about 20kg. 
Really depends how much you want to save the grass or feel the music 

Yokohama Geolanders, Sony head unit, NAUTILUS Air Horn, DRL conversion, Rear cargo space, Elvis Bobblehead, transfer Guard, Indian hanging Elephant, Koni Heavy track dampers, Custom SS exhaust, Voodoo Doll, Adventure Rack with LED ight bar, vintage ERIBA caravan usually attached (yes it's slow)

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08 Jul 2022 20:30 #244011 by Lambert
If I'm being honest I could probably loose 20 kg myself and not really notice. But that's mission creep and I'm not going there. The weight is not so much the removable items like fuel or EDC it's more the fixed things which a speaker system is. Hence the reluctance to go mad with the armour plate under the car. Having said that though there has been a bit of a move towards using trailers ever more frequently as a result of moving to the fixed towbar, it's less of a faff to hook up which is good as it means less running solo at or near gvm. 

In case it's not apparent I over think things and like to consider every eventuality before I change what I'm doing. Like I said, not normal.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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09 Jul 2022 07:09 #244015 by Busta
I'm all for keeping things as light as possible, but I've always made an exception for speakers. I recently read about someone advocating ditching the spare wheel to unlock extra performance and improve fuel economy. I'm highly sceptical that such small differences can be noticed. My fuel economy baely changes when I'm towing over a ton.
So I say go for it!
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06 Aug 2022 11:40 #244415 by Lambert
Today I have been mostly putting bass blocker capacitors in my front speaker feeds. This is instead of trying to get more 165mm cones in under the dashboard as that would be a lot of work. The caps are slightly on the high side at .8 micro farrad this means a cut off about 2khz, around 6 to 8 farrad would be better at around 300hz, but they are what I have and more importantly the fronts are only 100mm cones so it's not too bad.  It means that I can fade forward again and allow the DSO to lift the sound stage out of the foot well for the higher range which makes it sound better. Obviously all the bass from the 165mm's that I installed on the front support legs of the plywood rear deck last weekend and the under seat sub is all focused on my lower spine but feeling bass in your bum is not the worst thing in the world. On the whole it's starting to sound like a fairly competent system now, it makes passers by look up anyway.

Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!

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07 Aug 2022 15:28 #244433 by redoregan
Replied by redoregan on topic More first world problems, weight Vs tunes?

Historically I have always had fully amped systems in cars that weren't for work and have only in recent years of Jimny moved to a high power head unit because of the space constraints. What I also have difficulty with is the local Tarquin brigade in daddies amarok being able to drown my none standard system, I find it an affront to my masculinity
Haha so true.

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09 Aug 2022 10:26 - 09 Aug 2022 10:27 #244460 by yakuza
I still think that all my efforts to change the speakers in the original positions to gain some sound that could pass as being sufficient was futile. I removed the small pockets on the door sides that was not doing any much at keeping my car tidy anyways, and replaced them with a sheet of MDF and a front speaker set from Focal. (i think it was) Did the full sound mat insulation inside the door as well.
After a while we allways want more of course.
Next up was the rear door that is around 20 liters and again full sound mat insulation inside and out. replaced the inner door trim with again a sheet or three of MDF. An old amp from when i was young(er) drives the 8" Subwoofer from Ground Zero. My head unit got a pre amp out for subwoofer that can be adjusted for low pass. I will have to do the insulation again because the amount of air that blows out of the door handle makes the sound a bit unprecise and outside it sounds like a complete failure.
But inside is not bad at all and way better than anything i ever did to replace the original speakers.
I also do feel a bit masculine when cranking up actually, allthough my younger colleagues just laugh as they should :)

Just realized I will need to post pictures of the speaker boxes now..

Norway 2005 Jimny M16A VVT, 235 BFG MT, 2" Trailmaster, ARB rear lck, 17%/87% high/low gears.
Last edit: 09 Aug 2022 10:27 by yakuza.
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