Forum Home
PC World Chat
Thread ID: 107416	2010-02-15 03:43:00	Loud pounding sound from underpowered mp3 players.	Paul Purton (15429)	PC World Chat

Post ID	Timestamp	Content	User
858601	2010-02-15 03:43:00	Here is how. 12ohm Soundmagic noise isolating earphones. I cannot have my mp3 player at full volume any more. I have a Fiio headphone amp as well which I don't have too connect any more because it's too booming. The Fiio deserves a couple of pages of praise in its own right. Anyway these earphones are perfect for cellphones which are often so ridiculously underpowered as to be abandoned as a music player. One drawback of 12ohm is if the mp3 player transmits electronic noise. Often higher ohm headphones filter this out. Brand mp3 players don't have this noise. I can personally vouch for Sony Samsung and Omni as good with 12 ohm. (omni is a cheapy but it runs well) Laser definitely are not. Really horrible with noise and bad sound quality. I almost sent the phones back which many comments of scorn. Lucky I tried them out with other mp3 players. If this seems like a plug, well it sort of is. The gear is really good. If you have a problem with sucky dinky mp3 players. 2 solutions here.	Paul Purton (15429)
858602	2010-02-15 08:22:00	I recommend that you go and see an audiologist at the earliest possible moment.................:banana	Terry Porritt (14)
858603	2010-02-15 09:15:00	No my ears are fine. I can still here high notes. I've been looking to get actual Hi fi from mp3 players awhile. On the way I've had to understand electrical resistance ohms. More particularly how ohms eat up the volume. On the way I've learnt that mp3 players are not really set up towards hi fi at all. Some above 10mw can drive high ohm phones and progress to more higher defined sound. That is why Fiio came into existence. To feed the need to be able to drive high ohm headphones. Thus the mp3 player crosses the threshold to become true micro hi fi. The other route is low ohm headphones. I have both options and they both work well. I don't have things loud in my environment. Like tv stereo. My hearing is very good. But I like to determine my own comfort levels. I like the luxury of not having to turn my player all the way up. I can be satisfied before I run out of volume. I've really lashed out on stuff and come to understand alot and have gained satisfaction. In the end. I'll still get a Cowon D2+ At 37mW per channel I'll have oodles of power to drive any Headphones and I'll get my satisfaction.	Paul Purton (15429)
858604	2010-02-15 11:05:00	Can anyone give a reason why I shouldn't buy this. www.ascent.co.nz I've bought cheapys before and found them ok even enduring. I wonder if someone's bought one of these? Sealand seems a New Zealand brand but imported from China. I bought an Omni from the Warehouse years ago with sd slot. Still goes after all these years. And would be usable except no radio or file manager. I want bigger expandable space but with built in play list maker.	Paul Purton (15429)
858605	2010-02-16 01:06:00	I've been looking to get actual Hi fi from mp3 players awhile . On the way I've had to understand electrical resistance ohms . More particularly how ohms eat up the volume . Ohms don't eat up volume, though it is fair to say that all things being equal, high impedance phones may deliver lower sound pressure than low impedance on some players because power is equal to the square of the drive current multiplied by the impedance of the headphones so the higher the impedance (beyond the design match) the lower the volume . However, so long as there is a reasonable match to the output impedance of the player it will deliver adequate volume, and quality won't be affected unless you over-drive the MP3 player output stage by turning the volume up too high . The same thing applies in reverse if you use very low impedance headphones, say 4 ohms, then the output stage of the player will not be able to deliver sufficient current into the load before it drives itself into distortion and clipping . Provided you stick to the player manufacturer's recommended impedance range you will get quality and volume levels as good as the design of the player and headphones can deliver . MP3 players are not known for their audio quality anyway, there are cost-benefit and technical compromises that limit the quality that they can produce, especially in D-A conversion . Only the very best will deliver anything like true Hi Fi, and an analogue guru would insist that nothing digital will ever deliver Hi Fi quality under any conditions . Cheers Billy 8-{):2cents:	Billy T (70)
858606	2010-02-16 21:25:00	That's good advise. I've been groping around with this issue for awhile. I usually don't know what I'm looking for until I find it. My intelligence runs on serendipity. I've found a satisfaction for myself regarding the right headphones for the right player. I wish I could try every player against every earphone. I can't. Both product ranges are huge. I have to take my chances not really understanding alot of terms. Well I've chosen right with these headphones I'v bought delivering quality and loudness. A lot of mp3 players are underpowered and won't deliver loudness according to the manufacturer. Won't deliver loudness on the common 16 ohm. In fact I don't even look at an mp3 player if it doesn't show this information in their specs. (Output 10mW at 32ohm) or something like that. To me that's the most important info regarding volume and what headphones to use. I wouldn't mind listening to 4 ohm earphones. I'm not an audiophile but the quality of the sound I'm listening has slowly increased. I would like to share my every success. Because choosing the right mp3 player and headphones for the best possible loudness and quality is vast and complex.	Paul Purton (15429)
1