Monday, December 29, 2008
Sunday, December 28, 2008
I think even with 320 kbps mp3 the freq range reproduction is between 15hz and about 15,500hz or even lower than that. That's why the most noticeable differences between mp3 and CD are often in the hihats. Or at least, most people notice flatter, tinnier hihats with mp3s because the frequency response doesn't extend that far.
It loses some sub bass response too but it depends on the record and the amount of bass presence. At high levels certain bass heavy recordings just lose something noticeably when played on PAs at club levels - even at 320 kbps.
Even though you can't physically hear ultra high and low frequency sound you can sometimes notice when its not there. Case in point - have someone blow a dog whistle near you. Then there is the fact that your speakers/headphones have an effective frequency response too.
Most people don't have audio equipment sensitive enough to pick up frequencies above 15,000 Hz, so they wouldnt notice any degradation in sound quality on say most mini hifi systems.
I have been listening to vinyl since 1976, that has been 32 years already. I have not changed listening to CD. Thought CD is more convenient to play, to store and to buy, but the vinyls are more enjoyable and realistic. Viinyl folder is larger, can see the lyrics, or article about the singer, player or composer, like reading a newspaper rather easier than reading a news viewer in a PDA format.
I have listened to a reasonably good system recently , that was a Goldmund CD player, pre-amp power amp driving a Khamar floor stand loudspeaker, the sound was sweet, quiet, clear and not having sharp edges, not too digital... but I was having a short while on some light music, need to confirm through vocal.
CD's tendency to have less depth and a 'flatter' bass and lower midrange dimensionality."
The trebre is a bit harsh even the best CD player as comparing with good Analogue playing sytem.
Anyway, I can say that the Vinyl lover isn't idiot as the CD lovers have such a bias on us ( a bunch of Vinyl lovers)
“The best way to predict future is to create it!”
Milk-derived ingredients include whole milk powder, non-fat milk powder, whey powder, lactose powder, and casein has been widely used on many of the food made in New Zealand, Canada, USA, Japan other than China. This milk companies including Sanlu, Menggu, had been using these uncertified milks from the milk farmers on their product carrying their Brand name. Their Top management should have no excused saying they would not know the use of such mail contained Melamine. China image has been eroded as a national wide disaster, as for the Sanlu Milk company, it went Bankrupt last week, which was not a surprise to me.
CSR, also called Corporate Social Responsibility, corporate citizenship, responsible business and corporate social opportunity. It is a concept whereby companies and organizations consider the interests of the society taking responsibility for the impact of their activities on customer, suppliers, employees, share holders, communities and other stake holder as well as the environment. This obligation is seen to extend beyond the statutory obligation to comply with legitration and sees organizations voluntarily taking further steps to improve the quality of life for employees and their families as well as for the local community and Global society at large.
The practice of CSR is subject to much debate and criticism. Proponents argue that there is a strong business case for CSR, in that corporations benefit in multiple ways by operating with a perspective broader and longer than their own immediate, short-term profits. Critics argue that CSR distracts from the fundamental economic role of businesses; others argue that it is nothing more than superficial window-dressing; still others argue that it is an attempt to preempt the role of governments as a watchdog over powerful Multinational Corporation.
CSR is a way to care and support the company, employees, customer, society locally and globally!
Typical local example of the CSR caring acts:
No Lay off
1,000 company agreed not to lay off, these company include To Heng restaurant, Sasa cosmetic, Café-de Carol…it won applause of the citizens of Hong Kong,
Our CEO has also saying that we do not have such lay off culture and we will do our best to cut 10% of our running cost in December 2008, another 10% Q1 2009, and probably 10% Q3 2009. We will like to work together to believe the target. this include energy saving, budget control and at the same time we even increase the cost of R&D… for better capture of future order when business arrives!
There are a few categories of companies.
1. Running for survival, no profit, layout is the usual practice in case of low business
2. Running with profit, cash cow of high profit margin, can maintain the running of the operation in for 3-6 months without any loan
3. Running without the support of loans for 1-2 years even without any bank loan support.
I believe that only type three companies can have full contribution in CSR as a company direction and CSR involves a large scale company direction.
Carbon Dioxide emission measurement.
We have to set a target in controlling the amount of this emission per year.
A CSR company
Build good product with emphasis on the Green value contribution to the society.
Use green packing material, no or in case we can not, use less packing material.
Description 2.2KVA transformer, 4 21,000 uf filter caps
Retail Price 1200.00, October 1st 1974 Marantz Dealer List
First Year 1973
Last Year 1975
Matching Preamplifiers 3300
Blue Face Yes
Panel Width 19 (rack)
Panel Height 7 (rack)
Width 17 5/8
Weight 78 lbs, 83 shipped
RMS Power Per Channel 250 @ 8 ohms, 500 @ 4 ohms
Damping Factor @ Load Impedance >400
Total Harmonic Distortion (THD) 0.1%
Power Bandwidth 20Hz to 20 KHz
Frequency Response 2 Hz to 100KHz at +/- 1.5 dB
Hum and Noise >106 dB below 250 watts
Signal to Noise Ratio 110 dB
Intermodulation Distortion (IM) 0.1%
Input Sensitivity for Full Output 2.25 volts
200 W rms @8 ohms @less than 0.05% 20Hz to 20KHz360 W rms @4 ohms @less than 0.15% 20Hz to 20KHz
Total T.H.D. & I.M. Distortion 8 ohms less than 0.05%
Frequency Response and power bandwidth at rated power 0.12Hz to 20KHz - 0.1 dB @8 ohms
Damping factor >150@20Hz to 1KHz
Input sensitivity : 1.6 Volts RMS for full power output
Input Impedance: 75K ohms
Slew Rate 50V/uS
Size : 445mm(W)x178mm(H)x229mm(D)
Weight : 59 LBS
Introduced in 1977
Original Retail Price: $1,350
Ampzilla was created by world famous designer, James Bongiorno in 1974.
Chorus: Play that funky music white boy
Friday, December 26, 2008
The Phase Linear 700 amplifier got its name from its combined output of 350 watts per channel. Introduced in 1970, it was, for a while, Phase Linear's only amplifier. The 700 put both Bob Carver, the amp's designer, and Phase Linear on the high end audio map.
The early 1970's were heady times for Bob Carver as he worked to expand North American distribution and beat the drum for Phase Linear. The 700 soon became a favorite of recording studio engineers (19-inches wide, it was designed for rack mounting), rock bands, jazz musicians and audiophiles.
The first generation 700 was laid out asymmetrically, with the VU meters and control knobs toward to right side of the front panel. Carver did two things with the 700 that were meant to eliminate the need for a cooling fan, lower operating temperature and aid in servicing when it became necessary: he placed both the output transistors and the power transformer outside the amplifier enclosure. The output transistors were mounted to the rear heat sinks. The 700 was 45 pounds!
The 700 listed for USD$749.00 in 1970, and rose slightly to USD$779.00 in 1972 and 1973. In 1974 it was replaced by the 700 B
Bob Carver redesigned the 700 and introduced the 700 B in 1974. It featured dual left and right channel controls. It was rated at 345 watts per channel. Rack handles were now standard. Performance specifications of the 700 B did not change measurably from the 700, but then, component improvement was not visible to the buyer and listener. List price was USD$799.00 but jumped to USD $879.00 in1977, its last year of production. It was superseded by the 700 Series Two.
The 700 Series Two was introduced in 1978 and reflected the design approach of A. P. Van Meter, Phase Linear's new design manager. More attention was paid to the 700's aesthetics; the unit was undeniably handsome. Functionally, the VU meters were replaced by red LED meters, with a single volume control under each meter. Performance included 360 watts per channel, reduced THD and IMD and other improvements.
The impressive array of output transistors and drivers is visible on this 700 Series Two with the output device covers removed. With a list price of nearly USD$900, it was half the price of some economy cars! By 1980 inflation had pushed it to USD$1000. The 700 Series Two was replaced by the completely new DRS 900, part of the Dynamic Range Series introduced in 1982.
At that time, there were Crown DC300A, Marantz 500, Mclntosh MC2500! These are the mammoths in the Hi End Audio market! I was a student and was just a dream to look into the price tags, When I entered the Hi Fi Shop, the shop keeper would like to ask what Hi Fi equipment you used as to probe on your buying power. At that time a Taksun 120Y was HKD20,000 and that Phase Linear was HKD8,000.00 half the price of a CAR!
At that time 1973 a Rolex Date Just Stainless steel and Gold two tone man's watch was just HKD4,300. Until 1982, a Rolex Stainless steel man’s watch was HKD4,200.00.
- Morgan Stanley $10.5bn
- Goldman Sachs $21bn
- Merrill Lynch $12.3bn
- Deutsche Bank $13bn
- Barclays $12.7bn
...and still have $8bn change, which you would be able to pick up GM, Ford, Chrysler and the Honda F1 Team.
Honda withdrew from F1 Racing Team
Takeo Fukui, the president of Honda Motors Company Tokyo had made a statement that they would withdraw from the F1 races in December 2008. This is an action in responding to the down turn global economy situation.
A new Vehicle that is able to balance human feeling and superior vehicle performance at high level yet required equally superior driving skills.
I had a chance to own a NSX in 1996. That was a super car in town, tough the clutch was a bit tough from cities… but is road feeling and corners turning was superb!
Thursday, December 25, 2008
Monday, December 22, 2008
as There is only two bolts to hold it on the wall.
Sunday, December 21, 2008
2. Super WE300B amplfier with ultra flat frequency response 20Hz-100Khz +/- 0.5 db
3. Miniature Vacuum tube MP3 player with 50 hours battery life, two AA battery cells in use.
4. Battery Car lasts for 1,000KM with one 4-hours-battery-charge!
5. Ultra Linear response Vinyl Moving coil Cartridge with channel separation 60db, flat response 10 Hz- 100Khz +/-0.5 db, output 0.3mV! Intend to sell at USD8,000.00 only.
6. Solar powered hand held air con for hiking
Well, a new reformed way on expenses is needed: no cash no expenses to minimize your loss!
Annual interest rate of 33% is high enough, but the Hang Gone, Stupid Charcoal and who knows the Zulu Compress is increasing interests rate to 39% p.a. or even 49%!
When you pass your card to the shop, think for ten seconds!
There are approximately 150,000 people addicted to Gambling and I hope that they can "Go Back to the shore" and start a new page by dropping this bad habit of gambling!
Saturday, December 20, 2008
KNOCK NEVIS is so huge that when fully laden she cannot pass through the 32 mile wide English channel because it cannot be manoeuvred, as travelling in a straight line is its best forte.
Fully laden, she sits 24.5 meters deep in the sea, a depth great enough to stop her from accessing most of the world’s major ports.
The cargo of oil she normally carries is worth $122 million - separated from the sea by just 3.5cm of steel plate!
The holds could swallow St Pauls Cathedral four times over. It has a crew of 35 to 40, which means it only needs two lifeboats. It takes 5.5 miles to stop with a turning circle of over 2 miles.
A 10,000 Tons General Cargo ship can be converted to carry Automobile of some what 400 Camry! A professionl car carrier or roll on roll off can carry 5,000 car in one time.
A 40,000 ton bulk carrier can ship wheat good enough for the consumption of a city like Tianjin for 6 months!
A 80,000 ton bulk carrier has an anchor with a weight of 20 tons. The main shaft of the ship is having a diamter of 1.5 metre! It burns more than 1 ton of oil in one hour! What kind of milleage is this? Comparing with your Ferrari F4 or Porche GT2?
A crude oil tanker of 100,000 tons can not be loaded in the tanks at the two extreme ends of the ship. This would cause a tragedy happened in Holland some time 1983 as the computer gone wrong and the weight of the oil that actually cracked and broke the ship into two pieces. And this was a court case for the next 5 years as the oil contamination caused Billions dollars loss to the wharf and city of Amsterdam!