Hi Russell. I move in the world that makes that's possible. Frank Schroeder and I asked a very simple question of those guys in Las Vagas. They completely pulled apart the show to take up our suggestion. I am sure they had no idea who we were. They then told the other guys it was the number one question you could ask. The question was time alingement and phase.
Frank being Frank kicked off when entering the room " Look Nige it's almost a perfect RCA clone ". I nodded sagely and said to myself "it sure looks pretty".
To give you an idea how bad I am. When at CES it took me ages to realise the real function of my hotel was a casino.
I liked KEF as the people who treated me best of all in hi fi were the speaker companies. All of them that is. KEF was Ray Dudlyke if I spell it right. I think Ray liked the fact we were very open minded when others wouldn't sell KEF. The first UniQ speaker was weird. It could do things that had foxed people for years very well. It was boring. The Q10 the followed was dramatically better and had more of the special stuff. If I am strictly honest better than Quad ESL 57 on things that are true defects. The Quads are not great on listening window. The KEF is also like the Tannoy's, a bit beamed but bettered than Quad ESL. The LS50 an excuss to sell a Q10 for more money. It is better.
Here is my list of the hero cheapies.
Lenco GL75
JVC L5-E
A&R A60
KEF Q10
QUAD CD67
DENON DL110
Frank being Frank kicked off when entering the room " Look Nige it's almost a perfect RCA clone ". I nodded sagely and said to myself "it sure looks pretty".
To give you an idea how bad I am. When at CES it took me ages to realise the real function of my hotel was a casino.
I liked KEF as the people who treated me best of all in hi fi were the speaker companies. All of them that is. KEF was Ray Dudlyke if I spell it right. I think Ray liked the fact we were very open minded when others wouldn't sell KEF. The first UniQ speaker was weird. It could do things that had foxed people for years very well. It was boring. The Q10 the followed was dramatically better and had more of the special stuff. If I am strictly honest better than Quad ESL 57 on things that are true defects. The Quads are not great on listening window. The KEF is also like the Tannoy's, a bit beamed but bettered than Quad ESL. The LS50 an excuss to sell a Q10 for more money. It is better.
Here is my list of the hero cheapies.
Lenco GL75
JVC L5-E
A&R A60
KEF Q10
QUAD CD67
DENON DL110
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oscillation in the quill shaft led to Hill's gear drive breaking and Jim Clark going on to win with the DFV on it's debut.
I suppose that was the start of Costin & Duckworth learning that oscillation and fatigue were there to be tamed. Much like our amplifiers !
Russell. A friend bought the Fostex 4 inch on my advice. I always liked it. Bananna paper I think ? My 12 Lta isn't too different. Not bad for what would be a truck engine in the car world.
Nigel power formula. 1 cubic inch = 1 BHP is not bad. When big engines do that I am impressed. Some have no blower and use normal petrol I suspect. The little Citroen C1 1000 CC Toyota engine is 69 BHP. Not bad. It has very cunning variable valve working ( a joy of engineering ). It would be a dream in a 7 I suspect. As a V6 it would be interesting. It looks like Yamaha to me.
Nigel power formula. 1 cubic inch = 1 BHP is not bad. When big engines do that I am impressed. Some have no blower and use normal petrol I suspect. The little Citroen C1 1000 CC Toyota engine is 69 BHP. Not bad. It has very cunning variable valve working ( a joy of engineering ). It would be a dream in a 7 I suspect. As a V6 it would be interesting. It looks like Yamaha to me.
Agreed. Case in point the fairly typical DOHC V6 that Chrysler uses in all sorts of different automotive products: Trucks, Vans, Passenger sedans, sports sedans, etc.
https://en.wikipedia.org/wiki/Chrysler_Pentastar_engine
3.5 liters = approximately 210 cubic inches 214.7 cu in to be exact
271-305 Hp depending on compression ratio and other tuning variations.
https://en.wikipedia.org/wiki/Chrysler_Pentastar_engine
1.26 BHp/Cu In to
1.42 BHp/Cu In
Over the years the major performance upgrades have been due to:
Computer controlled fuel injection and ignition (Ca. 1980)
Overhead Camshafts, 1 or 2 1962-to this day Modern high performance V8's such as the Hemi and Corvette engines are still pushrod-based.
Variable Valve Timing (Ca. 2005)
While these features were introduced on selected engines earlier, the year shown approximates when the feature became mainstream.
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Maybe 15 years ago I bought a pair of KEF LS15s, which are fine sounding and impressively measuring speakers to this day. I think I paid $325 for the pair.
While the LS50s have a lot of techno-sounding audio woo enhancements, it is IME the basic coaxial design that hauls the mail, sonically.
The concern with any Q-series 2 way driver is the fact that a goodly part of the tweeter's baffle is the woofer cone which is moving with respect to the tweeter and therefore capable of adding Doppler distortion-based IM.
The higher you cross it over to your subwoofer(s), the better.
It's not hard to make something that is horrifically inefficient thermodynamically and compensate by making it huge. 325HP out of 6.5litres is really not very impressive. Especially given the weight of the motor. They have their place, and when hopped up full make a great 'lump rump blart' sound, but at a cost.
SAE horses are currently net horses with accessories attached, which is similar to other international practice. This was changed from gross horses which was for just the engine with no accessories attached in the late 1970s or 1980s.
Larry Webster: Horsepower Confusion and Resolution – Column – Car and Driver
"
Horsepower Confusion and Resolution
Car specifications are a big part of Car and Driver's 51-year history. The number that gets almost everyone's attention, of course, is horsepower. But horsepower is not as precise a number as you might think.
Turns out there are many different ways to measure engine horsepower, and they produce various results. Put an engine on a dynamometer—the device used to measure horsepower—and you could get a wide range of horsepower figures depending on how the engine is configured. For example, an open-exhaust system will allow more air to flow through an engine than a restrictive exhaust and thus produce more power.
That's just one variable among many, so the Society of Automotive Engineers (SAE) has published a protocol for power measurement. It's called SAE J1349, and it was updated in 2004 to close some loopholes.
So the rules have changed a bit. For example, the power-robbing power-steering pump must now be installed on the engine when measuring engine horsepower if it is part of the vehicle's normal equipment. Automakers are gradually switching to this SAE standard, and it has meant a drop in quoted horsepower ratings for some cars. Of particular note is Toyota's 3.0-liter V-6, which now produces 190 horsepower in accordance with the new standard. That's 20 fewer horsepower than its claim with the old procedure.
A new twist to the horsepower standard is a practice called "SAE certified." Under this optional program, an automaker allows an SAE-designated third-party witness to verify that an engine produces the advertised figure. Engines that have undergone this procedure carry the badge "SAE certified."
"
GM's current popular benchmark engine is probably the LS6 which delivers up to 405 horsepower from 5.7 liters or 341.733 cubic inches for a paltry 1.18 HP/Cubic inch. One word: pushrods.
https://en.wikipedia.org/wiki/LS_based_GM_small-block_engine
Good thing us big block marine diesel boys are into kW's.
(I was overridden by an S63 AMG Coupe on the highway near the end of the R'dam harbor area yesterday, German license plates, overtaken would be an understatement. After which, it went foot-down on the pedal to drive by a 40ft container-truck, the sound and acceleration of the vehicle were overwhelming. 1 lb/lb·ft more than a ZO6, and a Mercedes is considered trailer-park grade on this end, but likely the current A-no-1 for extended Autobahn travelling)
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Yep, my little Saturn has 116 Cubic inches and 124 HP (122 Ft-Lb of torque)
OTOH, ~1 Ft-Lb/ cubic inch seems to vary little from lawn mowers to trucks in normally aspirated gasoline engines.
Seems accelerating very fast in a straight line is all they are good for. Had one of those do that to me in Norfolk. Overtook 10 cars then got very squirrely scrubbing the speed to pull back in.
Or motorbike engines. Piston speed varies little between RC engines and container ship diesels as well.
Close to 4,500lb curb weight is a lot, but this one was an all-wheel-drive model (4-matic), appeared to stick to the rainy asphalt as a piece of gum on the sole of a shoe.
Parking space (length + width) in underground/multi-storey car parks is increasingly more the one to beat.
(In reply to the Swedish chef's squirrely girthely : Oink Oink)
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