QUOTE(lee82gx @ Jan 28 2010, 09:20 AM)
didnt have time to read through all the posts.
But to answer TS observation - that is a capacitance driver, not an inductance driver.
ITs not uncommon for tweeters to be based on capacitance as it can be more efficient.
If you really suspect its fake or not working, try to measure the capacitance at the tweeter leads with a multimeter.The reason you may not hear anything from it doesnt have to be that its fake, several valid reasons below:
1. Your sound source (file or signal, including DAC/ Soundcard) does not have high freq. sound. YOu can check by trying a sine wave generator at 10kHz and above.
2. That tweeter / driver itself is not very efficient or sensitive.
I dont work for any multimedia speaker company.
In the end you get what you pay for.
QUOTE(lee82gx @ Jan 28 2010, 01:59 PM)
So, you found out that there is indeed a real tweeter and not a fake one.
As for the sensitivity of the tweeter, you need to listen to the overall spectrum of sound, as speakers (woofers + midrange + tweeters) are design to be in combination to produce a flat response. This fact, even ah beng or ah seng speaker company knows.
So, if you listen from your normal position and find that the speaker does not produce as much high range as you'd like, then next is to see whether you are the type likes bright highs or not. If not, then only check the response of the whole speaker, and maybe in that case it could be that the speaker you are auditioning is performing poorly in high range.
Its also good you do a blind test from normal listening position to audition both speakers and see which one you still prefer.
Sometimes, the mid range driver is good enough to cover even the high frequencies, that the tweeter is cross-overed only to produce small amount of pressure at certain cross points, which makes it difficult for you to hear from the tweeter even at close range.
I don't support any brand in particular
, but if you are smart enough to do listening tests / auditions, I'm sure you'd bought a set of speakers that suit your budget vs performance. If you blindly bought a product due to "support" then caveat emptor.FYI, my edifier C2 performs well for my judgement, but I'm also quite sure the tweeter is very low response.
Every manufacturer has its right to use 'cheap' material, to maximize profit. As long as its reliable and performs to your listening needs, why check each component inside?
the main purpose of this tread. is some how notify user to be aware of what they are buying.
and the fact that they use a cheapo tweeter is seriously cheating.
as for ur comment. i don't see some how it's helping, except you are trying to deviating the focus of this thread.
performing a capacitance measurement on tweeter? blind test? measuring the requencies respond of the speaker? do you expect a normal user to perform all that before they buying one speaker? else anythings happen ,then the representative can blame back customer that they didn't perform the required test.. and it's their own fault of buying blindly? or they pay for what they get? because of cheap price giving an excuse of the company to use jerky parts??
then might as well ask all ppl to beware to eat outside.. paying RM 4.50 for mee goreng,, they shall have to leanr all ingredient that used in the mee goreng.. where it comes from. got halal or not.. and prepare to bring some poison detection kits so they can test the food got poison or not..
else they kena food poisoning. the tauke can always blame.. u shall know that RM 4.50 u pay for what u get..lol
i mean.. doing a blind test on a RM 150 multimedia speaker .. what kind of results you are going to obtain??? if their ear is so sensitive and they are so experience to do blind test. they don't even buy a multimedia speaker instead of a proper hifi. normal user just barely depend on the outlook, and the advertisement / spec published by the company.. no matter what kind of excuse given. they do play a fool with the spec.
as performing measurement to the frequencies respond of the speaker? i myself own a not bad entry level hifi that cost almost RM 20K currently. i don't even have a proper decible meter. because it's too damn expensive and i cannot afford a good one for use of one time only. if user get a cheap one to measure. the speaker company might still able to argue saying that the decible meter is not accurate.. no calibration ..measurement taken in user house which has bad acoustic properties.. like damping of high frequencies is too much.. not taking measurement in silence room.. WHAT EVER REASON oso can give..
and midrange that is good enough to cover higher frequencies? that's ridiculos that it will apper on a multimedia speaker.
a mid that is good enough to cover high frequencies anytime will cost RM 2K per PCS. take example of a compression tweeter. second hand of cheapest altec lansing (hifi, not multimedia) driver, anytime u throw out at RM 1.8K anytime ppl will grab it. do u think it will appear on a sonic gear that they cut cost so much even on the PCB? so far the cheapest mid that can cover high is used on AEGO M. and that's about RM 700 retail price.
in respond to the underlined parts of ur comment : there's no point critics back the user that they are smarts or not..
so do you mean that 7Eleven who bought a sonic gear without test and performing measurement of frequencies respond is not smart? .. user bought it. and found it's unfair. posted it in forum. i found there's nothings wrong. . anyway i believe customer who was dissapointed with it will learn a lesson them self. and be more careful the next time they purchase a speaker.
this thread is good. no matter what reason a sonic gear give... they still using bad parts inside.
i personally found this tread is very good. while 7Eleven did a good job of comparing different brand speaker internal at the same price range.
this can be a very useful future reference for customer who don't have a chance of buying and ripping them off before knowing what they are buying.
keep up the good work 7Eleven...
This post has been edited by PcWork: Jan 28 2010, 06:45 PM 
Jan 17 2010, 02:04 AM
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