As title, the iPOD HIFI say that this speaker contain class D amp .
what D amp may this use , some one have to open it .
🙂
what D amp may this use , some one have to open it .
🙂
Performance
Frequency response: 53Hz to 16kHz ± 3 dB
...who cares? 😀 Could be good for a laugh I guess. If you find out let us know.
Frequency response: 53Hz to 16kHz ± 3 dB
...who cares? 😀 Could be good for a laugh I guess. If you find out let us know.
I remember vaguely that older computer speakers by Apple used Tripath. Maybe this one as well.
Regards
Charles
Regards
Charles
It uses TI classD IC, plus DSP to correct for speaker frequency response. It sounds crappy though.
Hmmmmm....... Why did I have the feeling that a computer company wouldn't be able to do proper analog design ? 😉 😀
Regards
Charles
My quick googling on the topic led to alot of laughable disgust amongst ipod users. They really dislike it. Apperently the frequency limitations on it are actually that of the Ipod? From what I gather though, it sounds like it's just meant to blast in the midrange.
Apple's use of Tripath chips
I'm not sure whether they were used in external speaker units by Apple, they could have been, but Tripath (TA1101?) chips were used in a few PowerMac G4 models, the G4 Cube and perhaps some other types. The "PowerMac G4 Digital Audio" type, and a few later models AFAIK, are thusly equipped.
Out of curiosity, and delight with a T-Amp I'd recently heard then, I tried connecting Grado headphones to an old G4 tower we have around. It sounded very nice. Not that much punch, but that yummy "glassy" clarity I'd heard coming out of the T-Amp.
In case anyone's interested in Apple's usage of Tripath chips, there's some minimal info on these computer models on http://everymac.com/
A vigorous googling also turned up some random links:
http://www.google.com/search?q=apple+tripath
I find this interesting as a chapter in the story of the acceptance of Tripath's chips, and their rise to fame. Nobody really seemed to give a shift when Apple used these chips 🙂
phase_accurate said:
I'm not sure whether they were used in external speaker units by Apple, they could have been, but Tripath (TA1101?) chips were used in a few PowerMac G4 models, the G4 Cube and perhaps some other types. The "PowerMac G4 Digital Audio" type, and a few later models AFAIK, are thusly equipped.
Out of curiosity, and delight with a T-Amp I'd recently heard then, I tried connecting Grado headphones to an old G4 tower we have around. It sounded very nice. Not that much punch, but that yummy "glassy" clarity I'd heard coming out of the T-Amp.
In case anyone's interested in Apple's usage of Tripath chips, there's some minimal info on these computer models on http://everymac.com/
A vigorous googling also turned up some random links:
http://www.google.com/search?q=apple+tripath
I find this interesting as a chapter in the story of the acceptance of Tripath's chips, and their rise to fame. Nobody really seemed to give a shift when Apple used these chips 🙂
Hi Chris,
I believe so, was drinking with the Rep. out here in Asia, he was boasting about the Apple IPod Boom Box design win, so I guess it's this unit...
John
I believe so, was drinking with the Rep. out here in Asia, he was boasting about the Apple IPod Boom Box design win, so I guess it's this unit...
John
You know this kind of seems like a very small market for this product. For the cost of it most people dont' seem willing to lug it around. Maybe if they don't have a computer at the cottage they'd like to take it out there, but otherwise all you need is a USB and you can listen to anything you like. It seems to me if they're actually trying to exploit the high end market, they failed to even introduce people to it, and given the price your average off the shelf receiver probably offers more and does it better.
Prediction of things to come:
Microshaft's Ipod killer will try to do them one better by making their own class d, then anyone with a breadboard will get sued.
Prediction of things to come:
Microshaft's Ipod killer will try to do them one better by making their own class d, then anyone with a breadboard will get sued.
I think that the reason the Ipod Hifi isn't really successful is that anyone with half a brain could make a better one by using a T-amp, an SLA, and a pair of cheapo 6½" full range speakers. Add an hour in the woodshop, and you're done.
Yeah, alot of people aren't so resourceful though, so to that I'll add, it seems like they're late arrivers to that market and have some worthy competition already that's more than competitive on a cost/performance basis.
If you plugged your headphones into a PowerMac G4 then you didn't hear the Class D amp which is the tripath 12V part. Apple had a smaller connector so you couldn't just plug anything into the Class D amp, like to drive a line level input to a stereo. The connector was for the Apple speakers. You should see two connectors back there and one is just too small for a typical headphone plug.
-SL
-SL
Saturnus said:
It also might be that the iPod HiFi doesn't sound very good and costs a lot.
One of my coworkers has one and even he, an apple acolyte, is disappointed with it.
(Althought that took him a long time to admit.)
iPod Hi-Fi's amplifier is a Texas Instruments TPA3004D2 12W Amplifier IC The iPod Hi-Fi uses two of these chips. It has a dual voice coil subwoofer (yes it is a subwoofer. It only produces the low notes) The frequency response Apple says is a joke. It has no issues producing frequencies and notes lower 53Hz. I can get a clean 20Hz tone from it.
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