JC™

In my opinion, a balanced system is always better than and unbalanced system.  When i say “a balanced system”, i means that “moderate quality headunits” + “moderate quality speakers”.  For unbalanced system, i means that ‘lousy headunits’ + ‘ lousy amplifier’ + ‘good quality 2 way component speakers’.

Assume that the headunit of the balanced system is “Pioneer DEH-1050E (less than RM300)”, rear speaker is JBL 3 way speaker (~RM250), front speaker is unknown.  The rear and front speaker is connected directly to the headunit.  Money spent = less than RM550.

Assume that the headunit of a unbalanced system is stock headunit + “cheap amp (RM300)” + front speaker -”soundstream XSC.6 (~RM500)” + stock rear speaker.  Money spent = “around RM800″.  The front speaker is connected through the amp and the rear speaker is connected directly to the headunit.  The Left channel and Right channel of the amp is connected to front left channel of headunit (This stupid connection is done by inexperienced technician to cheat inexperienced user, because of this connection, there is no stereo effect).

For those two systems above, which system do you think will sound better, definitely is the balanced system eventhrough less money is spent.

The soundstream component speaker installed on the unbalanced system describe above is such a waste, the speaker cant show its full potential and good source quality due to poor quality source (headunit with low SNR) and poor quality amp (output with high THD).

The scenario of the unbalanced system is like connecting a sennheiser HD650( audiophile headphone) to a mp3 player.  A good pair of headphones will require a high quality headphones amplifier and good source to sounds good.

So, be wise when selecting the components, dont blame that the speakers is not good when you are pairing the good speakers with poor quality headunit and amp, people will laugh at you.

Tags: Car audio, opinion

My parents helped me to organize a birthday party on last Sunday.  My friends and relatives were invited.  Below are some pictures taken during that day.

My family and I Continue Reading »

http://www.divoom.com/products.asp

If you always observe speaker brands and designs that are available at the market, reading PC magazines, or online reviews, you will notice that DIVOOM’s design is very very very similar to other speakers’ design. Its copying other brand’s design!!! I really hate brand which copy other brand’s design. Continue Reading »

This project is about switching lanes. When metallic object is detected, it will switch from lane A to B for the time. set at the timer. After the time interval, it will switch back to lane A.

Below is how my project looks like. It is a simple project.

This is the relay.

This is the timer.

The inductive sensor.

The LED.

Below is the industrial grade inductive sensor used by one of my project for the subject named “Electrical Actuators and Sensors”. It cost around RM300 for this sensor.

Yesterday, there was a ignorant female driver parked her old black honda accord at the middle of road, blocking the cars which passed though that road and also cars which parked at the side of the road. Continue Reading »

The blue component is the Metal Oxide Varistor (MOV). You can see the MOV was burnt. That was caused by lightning strike. The yellow and black wires was connected to telephone line. The red and blue was connected to AC power and the green cable was connected to earth.

Yesterday (31 July) I went to Swinburne to enroll the subjects I will be taking in the next coming semester.

Continue Reading »

http://www.zdnetasia.com/insight/specialreports/itemployment/0,39055182,61999180-1,00.htm

The link above shows the salary surveys between different countries.   I was shocked when I see that job salaries in Malaysia is even lower than Thailand.  There is a huge gap between salaries in Singapore and Malaysia even though both countries start developing at the same time.  What might be the cause? Continue Reading »

Zeroshift transmission is a new technology invented by Zeroshift Ltd . The company claims that its transmission is superior than other transmission in the world. It has better fuel efficiency than SMG, manual transmission, auto transmission, AMT, and CVT. It cheaper to manufacture, the weight of the transmission is lighter, and the size is compact compare to auto transmission and other transmission which has complex system such as SMG, CVT, and DSG. Continue Reading »