Car appreciation... the aesthetics, the engineering, etc

I just bought a 6l 8bar oil-free DeWalt yesterday and it's great, I'll check specs but build quality and design are superb.

what about the aldi one for £70? currently looking for one myself, just missed a couple of cheap ones in a local auction.

I saw the aldi one, it's the same unit as sold by SGS engineering for £10 more, the benefit with the SGS one is you can upgrade to a bigger tank - I was thinking of going for a 50ltr one as i think the 24ltr tank might be too small for what i need.

Ah interesting. Yes, I do worry about the 24lt tank too. Will look at SGS, also I couldn't find out what fittings the Aldi one has, some old posts say it has non standard fittings which would suck.

This looks like a good starting kit actually https://www.sgs-engineering.com/sc50h-50-litre-high-flow-air-compressor-air-kit

I'm in Glasgow, no working vehicle at the minute though :(

He can drop here if he's willing, business address/workshop.

Yeah, I was looking at the 50ltr kit that comes with two air line hoses and a water trap from them

Where will it be kept? Those small ones are noisy.

Easy enough to change, but thought they were standard.

Aldi one is guaranteed for longer, three years just remember to change the oil regularly.

Yeah I’ve had a really small one before, they’re about 97db. I’ll either put it under my workbench or in the shed out the back and route a hose through.

99% of the time if I’m using something that requires the compressor on I’ve got ear defenders on anyway

There’s 2 types of fitting

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Ah they were old posts, so may well have changed, think they are now Euro Quick fittings

Probably won’t be able to get those fittings after March 29th #brexit

Is the threading the same so they are interchange able?

Yeah I think they’re all 1/2” BSP or something, you can normally swap the connectors relatively easily

So the 500 has returned with a new oil temp sensor and fault codes cleared...

My concern is the part that died was being put under strain because of a bigger issue. Lets see if it breaks again...

😎

Or the sensor failed, happens.

Blew the clutch in the scooby last night while trying to hand with the turbo volvo boys ;)

Also had a little spin in an s15 and that got me wanting a silv.

Car stereo - I have the option to specify the frequency range being sent to the speakers.

When I search for what frequency range I should run the woofers at I get results for sub-woofers, which isn't very helpful.

The options I have are set by rotary dial, and the marks are at 50, 60, 80, 120, 200 and 500 Hz.

By using the accompanying switch I specify if the speakers on that channel should be above or below the frequency set.

I've got two woofers, and then four midwoofer/tweeter pairs.

Stick them all on 200 Hz and see what it sounds like?

Latest Crimbo / Winter reads...

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Do you have the frequency responses for each unit ? They normally come with a graph showing spl Vs Hz on a log scale, which you can look at too see where it drops off.

If not I would start at 200 and compare it with 500 and 120

Annoyingly I have a chart for the woofers, but not the combined mid-woofer/tweeter units.

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I think, from a bit more reading, that this is recommended:
Sub 0-80Hz
Woofers 80-500Hz
Mid-woofer 500-5,000Hz
Tweeters 5,000+

But I don't have a sub, as it won't fit, so I'll set the filter point at 500Hz, woofers to run below, mid/tweeter units above, then take it from there.

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You can't hear much below 20hz so unless you're hoping for the brownsound for weightloss properties there's not a lot of use speccing down to 0hz.

Looks like there is a bit of a drop (well actually a hump at 100hz) from 200hz to 500hz, so I would experiment with a 200hz crossover as well.