RNM.
All us old guys remember Velodyne. So many companies just seem to come and go over the years, even those that had decent products. Are you back in the States?
All us old guys remember Velodyne. So many companies just seem to come and go over the years, even those that had decent products. Are you back in the States?
Firstly, passing speaker level currents through a ferrite bead mean you really do have to select the material carefully. If you don't, it's going to saturate (very easy to test by the way).
Secondly, as you point out, line level signals are orders of magnitude lower in terms of current.
Secondly, as you point out, line level signals are orders of magnitude lower in terms of current.
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All are good in my book. From the scream of a BDA on webers to a lumpy rumpy V8. For my drive (if I ever get a project car again) I like light and nimble. Whole car under 600kg type. Divorce put paid to that, but one day.
When I used to hang around on the DIY fuel injection forums one of the people there had a thing for the old IH big blocks. With turbos to handle the Colorado air 🙂.
What did amuse me was those who thought that 1HP/CI was 'high output'.
I've run something along those lines last six years - Fisher Fury Spyder, with a Yamaha R1 motor/sequential dog 'box: 1 litre, >12K7rpm redline and 170ish hp for a (road-legal) car that weighs 502kg fuelled -with me in it. Sheer joy 🙂 If you're anywhere near N Somerset , come and play.
Strongly agree that all approaches are fun, though. Have tried big V8s, but personally prefer scalpels to axes.
A roots blown big block marine V8 does 2.5hp/ci.
($100k buys 1800hp, with aftermarket blocks by Brodix, Donovan)
($100k buys 1800hp, with aftermarket blocks by Brodix, Donovan)
The R1 engine does more than that Natasp 😛 Actually whatever your preferred poison, you have to admire 170HP/litre. OK it needs to rev to buggery, but still impressive.
@Martin: might well do if I can arrange it. I miss my silly car.
@Martin: might well do if I can arrange it. I miss my silly car.
One of my neighbours drives a Nissan GT-R (car dealership)
Just the high rev. sound when he drives by is an anxiety stimulant.
(afraid he also does it late at night in the weekends, young bloke)
Just the high rev. sound when he drives by is an anxiety stimulant.
(afraid he also does it late at night in the weekends, young bloke)
Pardon me as I am electronically illiterate. But if we are talking about radio frequency affecting cables and presuming ferrite blocking them. What happens to the voice coils in ferrite magnet of speakers ? Would ferrite magnet block radio frequency on voice coils ?
Regards.
Regards.
I don't know what speaker magnet "hard" ferrites look like at MHz - but at low, audio frequencies when fully saturated, "magnetically charged" they look pretty much like just so much empty space
all the magnetic dipoles are oriented, "stuck" in that orientation to generate a strong magnetic field
ferrites used for inductors, filters are "soft" - have randomly oriented, mobile magnetic domains giving useful u_r and loss terms at the frequencies and low magnetic fields they are intended to operate in
all the magnetic dipoles are oriented, "stuck" in that orientation to generate a strong magnetic field
ferrites used for inductors, filters are "soft" - have randomly oriented, mobile magnetic domains giving useful u_r and loss terms at the frequencies and low magnetic fields they are intended to operate in
I watched most all of the Can-Am races held at Monteray, CA..... The Shadow, McLaren, Porches etc. Now they have tested a few in collector hands today...... the cars were in the 640HP/650 # range... fuel injected only. But thier acceleration and over-all performance was also due to the 1300-1600 total weight of the cars. HP/Wgt ratio.
Today, you can buy an American brand car with the power and torque of those cars off the show room floor and get better MPG and clean burning and long lasting. But at a much worse HP/wgt ratio. That makes a huge difference. Comparing the ZR1 with similar HP/TRQ but slightly more than double the weight..... the ZR1 would need 2X it's power to do what the Can-Am cars did.
-Richard
Today, you can buy an American brand car with the power and torque of those cars off the show room floor and get better MPG and clean burning and long lasting. But at a much worse HP/wgt ratio. That makes a huge difference. Comparing the ZR1 with similar HP/TRQ but slightly more than double the weight..... the ZR1 would need 2X it's power to do what the Can-Am cars did.
-Richard
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Actually, I met my first V8 in a light blue Plymouth, which was the official car of the United Nations Development Program mission in Ankara, Tureky, in Fewvruary 1964. No jot rod to be sure, the car set up for maximum comfort. But the power it had made it just easier and pleasing to drive on normal roads.
I bought my first Chevy 4 years ago. Noz black, silver coloured, certainly no V8 inside, but a humble 1.8 litre in line four, albeit with twin overhead cams and 4 valvels per cylinder. Delivers 141 bhp through the easiest manual gearbox I have ever had the pleausre to use. It is in fact a German Opel in drag, everything is German made ecept forthe bodywork, which was stamped in Korea. AS a family car, it will hold its own against any comers, the suspension is ideally bačamced between comfort and road holding, and the people who designed the braking system were really on a roll. In value terms, that was easily the best deal offered, its cost/benefit ratio is outstanding. But a racer it is not. If I had the money, I could have gone for a Camaro
Only US V8 powered I have had is the car below. [Shelby Cobra Ford 4.7 with BW T10 gearbox, Weber race clutch etc) Very fast , bit lumpy in the bends but very fast in straight-line. Docile in town and - provided you avoided pulling high revs did 22 (+- 1) mpg everywhere. That torque was to die for. [It was the factory production photo and had been subject to crash testing in the US, converted LHD/RHD umpteen times and was a bit more basically trimmed than production types]. Engine was unreliable (Head gaskets blowing, timing chain broke twice, second time I had had enough of rebuilding it and sold it as needing attention to my dentist who looked after my mouth for a dozen years as he got the car at a good price. Now in loving fully restored, pimped condition in Switzerland). But I happily remember that torque and G force when full foot down was used and the traffic faded in the mirrors! Now in old age stick to Audi 3l Quattros with big costs when things go wrong...seldom happens though. 🙂
EDIT:
PICS NOT "STICKING" (Car is a Trident Clipper, made by TVR and caused the first bankruptcy of TVR!!!)
EDIT:
PICS NOT "STICKING" (Car is a Trident Clipper, made by TVR and caused the first bankruptcy of TVR!!!)
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You want torque? I'll take my friends Tesla any day. No sake (rice whine), no V8 blatt, just quiet.... Until the muscle car catches up at the quarter. oh well.
Alan
Alan
The acceleration of those Tesla's is absolutely amazing. It's better than the Ferrari's, Porches etc.
Internal combustion engines will never have good low end torque, while this is standard equipment with electric drive.
It's a great disappointment to me that even a DIY audio forum ultimately seems to be occupied by trophyism in one form or another. I'd really hoped for better. I gave it my best shot here to post some honest stuff that might benefit the genuine pursuit of audio. But that's it - I'm out of this forum, it was mostly a hard slog for little gain. Knock your socks off guys, and thanks for all the fish.
The Prius was de-tuned a lot because people had to take classes on how to drive to get the MPG advertised... because they were racing and winning mustangs of the time, blasting up huge hills at 90mph, etc etc.
LUCKY:
........for goodness sake it is clear that this forum should have been wound up and put back as part III (in the proper analog section) and been subjected to hard-love moderation. It wasn't , but was allowed to go its own way in this section of the site. In those circumstances what do you expect when everyone who ever said anything worthwhile here was subjected to disrespect ........and sometimes downright bullying.
........for goodness sake it is clear that this forum should have been wound up and put back as part III (in the proper analog section) and been subjected to hard-love moderation. It wasn't , but was allowed to go its own way in this section of the site. In those circumstances what do you expect when everyone who ever said anything worthwhile here was subjected to disrespect ........and sometimes downright bullying.
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