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Zobraziť predchádzajúcu tému :: Zobraziť nasledujúcu tému |
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Rumcajs Hifi obsluha
Založený: 20 marec 2014 Príspevky: 4
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Zaslal: Po máj 16, 2022 13:55:11 Predmet: Co říkáte na malé zesilovače postavené na čipech TPA3116D2 ? |
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Co říkáte na malé zesilovače postavené na čipech TPA3116D2 ?
Třeba Fosi Audio BT20A (2x100W) https://fosiaudioshop.com/products/bluetooth-amplifier-2-channel-stereo-amp-receiver-class-d-amplifier-for-home-audio-system-fosi-audio-bt20a-updated
Mam 3 pasmove repro 6 Ohm z nejakeho mini systemu, tak by to mohlo stacit ne?
1)
Fosi Audio BT20A TPA3116 MINI POWER AMPLIFIER Class D Integrated Amp Bluetooth 5.0 100W x 2 (V1)
Main Components Found Inside:
- 2 x TPA3116D2 https://www.ti.com/product/TPA3116D2
- 3 x NE5532 Ti chips https://www.ti.com/lit/gpn/ne5532
- 4 x 1000 micro farad 25v Capacitors NXA Sam young https://www.samyoung.co.kr/product/product_info.asp
- 1 x QCC3003 Bluetooth 5.0 Qualcom Chip https://www.qualcomm.com/products/application/audio/qcc300x-series/qcc3003
- 1 x OMRON G6K-2P-YGg https://omronfs.omron.com/en_US/ecb/products/pdf/en-g6k.pdf
- 2 x Output LC Filters / Low band filters
- 1 x Power Switch and 1 x Dual Color LED (Blue/Red)
Pozor V2 prý nemá QCC3003 ale nějaký Chinese chip ATS2819 a
V02 has a sound dropout problem, something like a deliberate mute that lasts about a 1/4 second, that is very annoying not related to RF signal strength (phone can be beside the amp, no difference), especially at the beginning of a song. You miss the first few notes.
I don't know if the V01 in this video has the same problem because I don't have one to test. But anyone who does, please try this simple test and comment. The best way to test is if you have a good 2 or 3 seconds digital quiet period after hitting [Play] and before the song starts.
I suspect Fosi made a business decision to reduce cost and threw out the QCC3003.
BTW, for iPhone owners, the QCC3003 in V01 also has the AAC codec (in addition to the standard SBC codec), so with V01 like in this video, you get even better sound quality if you play a FLAC (eg in VLC) than most Android phones do though the standard 20-year old SBC codec. I doubt that V02 has AAC, but that is conjecture, I could be wrong.
In any case in my judgement, the new V02 lobotomizes the functionality of the Ti TPA3116 high quality amplifiers on the board.
2) nobsound Douk Audio https://www.amazon.de/stores/page/D0397924-5B87-49FD-91A4-7576C0F9ADF1
Ale tady je tech malych tolik verzi ze se v nich nevyznam. Nejspis je v nich jen jeden cip TPA3116 (2x50W) - ma nekdo prehled?
To by mi melo stacit asi, k starym reprakum od hifi …
Ps nasel jsem zde akorat https://hifi.slovanet.sk/bb/viewtopic.php?p=263450#263450 kde teda asi tyhle firmy zacinaly. |
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