sound like u experience smtg b4
a friend of mine burned his engine and gasket before, because his sound setup was too demanding for his alternator and battery at idle (engine at < 1k rpm)
stop car too long, with SPL of a concert in the car.... burn lor
thts why got all this expensive stuff to keep everythin in order:
http://www.soundstream.com/AudioProducts/cap/capacitors.htm

jangan main main

This post has been edited by andrew9292: May 13 2011, 08:23 PM

Just bought an Edifier H280 IEM to pair with my Nexus 7 so here's a mini review after 12hrs burn in

Really really suprised at the sound quality for such a price (RM39)

Sounds quite close to SoundMagic's PL-21.
- Bass is quite prominent in quantity n quality, just that it does not slam like 21's.
- Low punch bass notes, mid bass notes like those of a bass guitar (120 - 180hz) are not prominent.
- Also slightly smaller sound and crispier higher end, better seperation and sounds clean/smooth.
- PL-21 sounds 'bigger/full' but slightly darker and slightly less seperation, sounds a little harsh to me too.

- Still quite some distance to a Hippo White which sounds quite large and punchier with good seperation, but a White costs RM100+.
- Easily surpass EP-630/660 (Creative >RM80) and most Sonic Gear IEMs. Razer M100 too (>RM100).
- Can bring out some small details and good instrument layering. However still has a slightly 'small' but smooth sound
- Sounds best at low to moderate high volume. Congested at high and very high volume.
- Sounds like a slightly 'cold' Edifier C3 if u ask me.
- Personal opinion, sound signature is better than some Ultimate Ears (UE), they sound really cold, congested and loud. In my opinion sounding big and full is one thing, sounding just loud and forward is another thing which is kinda fatiguing/annoying. But this is my taste and will vary with many.

For RM40, i dont think there is anything better for super-budget IEMs... Maybe they should start taking down those SG iems from the shelves...

Songs tested with, these songs have quite good mastering imo:
ATB ft. Melissa Loretta - If It's Love
Enigma - Principle of Lust (full/reprise/11min version)
Madonna - Die Another Day
Within Temptation - Faster
TJR - Ode To Oi
Norah Jones - Those Sweet Words
Norah Jones - Turn Me On
Olivia Ong - I Believe
S Club 7 - Say Goodbye

Nexus 7, Realtek Chipset.
Asus K40, VIA VT1708 Chipset.
Macbook 07' Sigmatel Chipset.

jus normal stuff

This post has been edited by andrew9292: Feb 6 2013, 09:18 PM

OMG juz now did a search of ''edifier h280 review'' ... It wuz u
Yeaa mann they should have trying stations... for this price nothing comes better. Even some RM80+- iem from Sony, SG, philips imo cant compare...

There is 1 drawback tho, mayb Edifier uses OEM tips. The mid-size tip & large size tip cant lock onto the IEM head properly. If you twist/turn it, it can turn round and round when fitted. Tried with other brand tips (Hippo & Beats), they fit tightly and you not be able to turn them. Sound better too...

This post has been edited by andrew9292: Feb 8 2013, 09:19 PM

Just got a M3300-SF today Good stuff!
Really nice sound as always from Edifier, imo nothing can it beat for the same price.

In some departments cant beat previously modified cheap and tiny M1380 though
Aish. Shouldn't poison myself, now buy any production speaker gonna have to void warranty + extra spending

M3300sf controller has a split cable for 3.5mm connection as an input.
There is another Aux input at the volume controller housing itself.

I have a problem where im using a laptop and the split input is too far from it. I believe it was designed to be close to the sub which will be close to a pc casing on a floor, not a laptop on the table.

Hence im going to use the aux input and this split input is picking up some noise.
I notice the pin is simillar to M3400 volume control, can i use that instead as that doesnt have a split input, just an aux input which is what i need,

To control the sound settings on the C3? Nope. The best u can do is use a music player with eq and custom presets. Or use a system wide eq with presets.

Gonna modify M3300sf guys... Opened up and made a list. Any suggestions on what's good?
Should i leave the capacitance stock or bump up on which ones?
I remembered increasing the capacitance on some caps, can get better stability... which one would that be?

50v @ 10uf x 7 units - Replace w/ Pana FC
50v @ 2.2uf x 2 units - Replace w/ Nichicon KA
50v @ 47uf x 2 units - Replace w/ Pana FC
50v @ 22uf x 2 units - Replace w/ Pana FC
25v @ 4700uf x 2 units - Replace w/ Nichicon UHE

ST4558 x 2 units - Replace w/ OPA2134

I see... I thought could bump up the sub and sat's capacitor for better/stable sound?

Thanks for suggesting opamp... I loved OPA2134 sound though, on the warmer and quiet side... Might try it's sibling 2132 first
How's OP27's signature? Can't seem to find much reviews online
Wont do ceramic cap yet... and I cant do resistors cause i'm color blind

Do you find that certain caps create a certain kind of sound signature?
Eg, Reading another audio forums generally FC can be grainy, FM scoops up the mids, Nichicon PW flat, KA 'v-shape' etc etc
Or is it all personal opinion?

Hmm... There are some wires to the woofer unit and transmit wires to the bass knob from the pcb... I have some speaker wires but its kinda thick and wont fit in the pcb hole, is it recomended to strip some strands?

This post has been edited by andrew9292: Feb 11 2014, 06:29 AM

Thank you for your suggestions bro! Helps me alot as i know better what to look for & expect. Just did the purchase today
What kind of cables you use to replace for the SW? Managed to stuff into the PCB hole for soldering?Or joining via a copper pin or something else?

Thank you to you too bro! Learned quite alot from you recently. I've made a note of your suggestion and will try it out for second round Trying to learn the differences and relationship between different component choices and value. Trying to avoid FCs this time as it didn't really suit my ears on previous experiences, had that grainy higher-mid timbre (dunno, personal experience). Have u tried Pana FRs? They seem good on paper, almost like FM.

Currently just trying direct value to value replacement

50v @ 10uf x 7 - Replace w/ Nichicon KW
50v @ 2.2uf x 2 - Replace w/ Nichicon PW
50v @ 47uf x 2 - Replace w/ Nichicon KA
50v @ 22uf x 2 - Replace w/ Panasonic FM
25v @ 4700uf x 2 - Replace w/ Nichicon HE (back order from USA, not sure how long)
Opamp - x 2 - OPA2132

That's the best available on Element14, cant use Mouser cuz no credit card. Mouth watering seeing the stuff they have there

^ Cosef, okei got it!

---

Sifus, the M3300sf's volume control is really bloody sensitive.
Just about 3mm turn to the right from minimums and it's at normal listening level.
Plus there is some form of channel imbalance inside the first 5mm turn radius from minimum.
More than that no imbalance but it's too loud

Any modification can be done to lower the sensitivity & channel imbalance? Eg, Another potentiometer? any examples?
Uhh, in case anyone's wondering why I can't use any form volume control in the OS(Lubuntu), the system has been set up to be bit-exact so there's no volume control. Previous speakers not that sensitive

http://my.element14.com/jsp/search/browse....matchallpartial
I guess the first thing is to get a measurement of the current resistance and choose something higher? What's the best way to measure? Any ill effect of different resistance etc? How would I select the other options? Shaft, voltage, power, mounting etc...


This post has been edited by andrew9292: Feb 13 2014, 12:15 AM

Today is a good day. Completed the first part of the modifications to my M3300sf today......

All capacitors are changed as per the list at the previous page with the exception of 2 big power filter capacitors due to slow shipping.
Opamps are OPA2123P.

No joke, not kidding, bukan main-main...
It sounds really different as that forward-ness and hot high frequencies are quite tamed now although still burning in (if you believe in it).
Other stuff will be as usual, better sound stage & layering. Thicker, centered and 'in your face' vocals.
Much better details, some songs have a slight reverb or background instruments/notes/sounds that can't be heard on the original non-modded speaker.
Wasn't wrong about the OPA2132, it's warm and really wide in a very natural way, it's bass is big & natural-throaty plus it punches the chest.
Though it doesn't sound as 'clean' as i thought it would be, probably cause the power caps are still stock
As always, after modification the basic conclusion is "this is music" with a wide smile

Second round awaiting, the pending UHE caps, & change the internal interconnect cables + do something about the volume control (too loud & channel imbalance at start of turn). Maybe have send out for resistor modding cuz im color blind

Some pictures. No pictures of the process, was too concentrated and forgot to take some... sorry, phone cam.

All the stuffs arrived


It's Done! Front view


Back view
(I accidentally partially lifted some trace and had to reroute some of the solder joints to the nearest common joint. The metal pin connecting in the middle and the U-shaped pin. This happened when i was using the only solder iron+sucker, had to press hard on the board.)


Was fool not using this for my previous mods. It made things so easy, if I didn't try to be a hero and actually used this all the way today, those traces wont be lifted. Haih

This post has been edited by andrew9292: Feb 13 2014, 09:14 PM

Don't know how long it would take to arrive. Probably months.lol
Yep plus I apply pressure on the joint after the solder melted. Hands very shaky if no pressure Love the braid tho, very clean job.

Sifus, any idea on how to open M3300SF satellites for some mods? I believe there is some kind of crossover/capacitor inside...
It seems to be some kind of clip on / glued enclosure... totally no screws...

This post has been edited by andrew9292: Mar 2 2014, 03:30 AM

Can't do it bro... If it was 3 piece design (front, back + face), then the face must be glued to the front i think. Can open the enclosure from the side and see that it split into 2... but it seems there's something inside holding it together...

Can Mr.Edifier share? How would service crew open the satellite?

The grill is removed from day 1 =D but it covers up the speaker driver only... there is no screw securing the driver nor enclosure

Edifier, had PM you about M3300sf replacement controller... need a replacement

So a few days back I bought the Edifier H285 IEM / Earbud

Here's a tiny-review...

Package:
1. The IEMs itself
2. A mini-manual
3. 3 pairs of tips ( Large - Medium - Mini )

Quality:
1. The IEMs
- They are nicely build. No defects, scratches nor paint chips.
- The cables were abit too tightly secured in the packagaing, being in the package for long it created a 'permanent' sharp-bend near the jack. It will go away if I straighten and apply pressure on the area for some time, but i'm too lazy.
- 4 days of usage, the cables never tangled up on me yet. Nice material.

2. The Tips
- Previous Edifier IEM (another IEM) had oversized tips that didnt fit properly. This time it's super tight for all sizes, no leakage & isolation is as good as it gets. Yes, you will hear the rumble and whine from the electric motors on the RapidKL LRT. No, you wont be able to hear conversations and cars passing by in a busy coffee shop.

Sound:
- Adequately balanced from the lows to the mids, then the higher-highs get crispy (if you've been to an IMAX theater & hear their kind of tweeters, something like that)
- Bass is adequate, somewhat theater-like as it has the low rumble but on certain songs, a little lesser in thump.
- Mids are a little behind in the mix due to the crisp of the higher frequencies.
- Pretty nice timing and phase, doesn't sound weird to me, doesn't fatigue at slightly louder listening levels (and it gets your feet tapping)
- Nice soundstage, but I've heard wider ones like PL-30 & Hippo White (which are at twice the price)
- Average "crosstalk/seperation". Some songs are engineered with instruments or effects that are positioned differently between left and right. Somehow, this is not a strong point of the H285. Yes you can hear the differences but you cant feel them.
- Sometimes due to the high-end crisp, certain music wont sound as 'clean/quiet' as it's supposed to be
- There is some background hiss on my Nexus 7, no hiss when paired with a DAC. Probably the N7 has poor noise floor.
- Although at 32Ohms impedance, don't be fooled as it's more sensitive and louder than many 16Ohms IEMs.
- AFAIK, this is the top IEM that Edifier is currently offering based on price (RM50) and of course quality. Is there a better one?

Some test tracks:
http://www.youtube.com/watch?v=Qg7L0OQiN78 (Lindsey Stirling - Behind The Veil)
http://www.youtube.com/watch?v=f2JuxM-snGc (Lorde - Team)
http://www.youtube.com/watch?v=yoj2I6ZJLx8 (The XX - Together)
http://www.youtube.com/watch?v=kdemFfbS5H0 (Chainsmokers - Selfie)
http://www.youtube.com/watch?v=VRNPkJ0ELPc (Within Temptation - World Is Watching)
http://www.youtube.com/watch?v=NNYKVbIqYqY (Owl City ft Lindsey Stirling - Beautiful Times)
http://www.youtube.com/watch?v=pK2zYHWDZKo (X-MEN - Days of Future Pass Official Trailer)



This post has been edited by andrew9292: Apr 22 2014, 01:30 AM