More highlighting?
Technically, they both act as filters. The big cap for lower frequencies, the small cap for higher frequencies.
Technically, they both act as filters. The big cap for lower frequencies, the small cap for higher frequencies.
I'm back after a long wait for my speakers to arrive. I got a pair of Polk Monitor 30 Series II.
I got an Indeeed TA2021. I used a PC power supply's 12v to power the amp. Galaxy Note 2 as source. mini plug to RCA. I just tested a few minutes ago. Now I have a problem. The Volume is too low, I have to turn the knob up to 45% to get decent loudness. What could be causing it? is it the power supply? could it be the speaker wire I'm using? its CAT6 UTP Solid Core twisted pairs.
Speaker Specs:
few pics:
I got an Indeeed TA2021. I used a PC power supply's 12v to power the amp. Galaxy Note 2 as source. mini plug to RCA. I just tested a few minutes ago. Now I have a problem. The Volume is too low, I have to turn the knob up to 45% to get decent loudness. What could be causing it? is it the power supply? could it be the speaker wire I'm using? its CAT6 UTP Solid Core twisted pairs.
Speaker Specs:
An externally hosted image should be here but it was not working when we last tested it.
few pics:
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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The output from a Samsung Galaxy Note 2 is too low. I had the exact same problem with my LG Optimus G. Try using a decent CD or DVD player.
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Hi KopiOkaya,
You can always use a higher ampere rated PSU - as long as you're using the properly rated voltage for the device. The device will only draw what it needs to operate. Now, of course if there's a fault that would place a direct short inside the amp, then you might end-up with a pile of smok'n and molten electronic parts. 😱 18amp is a healthy amount of current and easily weld metal parts. But even that's highly unlikely. Most domestic US 15amp circuit breakers will pop the instant they see too much current - hopefully avoiding anything too disastrous! Just don't go poking around under the hood with a screw-driver with it plugged in. 🙂 Not sure what the ampere standard is in other parts of the world that might use the higher 220 voltage.
How are the little amps working out for you? I follow this thread to stay up on the little Lepai's.
🙂 I emailed Peter Cheung. the maker and the seller from eBay. He said the same thing as you Kopi, Note 2 source volume is too low. He did say though that the PSU is good.
For my part, I've been following T-Amp threads all over, and this is my first ever test and experience with my new set of speakers and the TA2021 amplifier, so I don't know what to expect since I don't have anything else to compare it to except my PC audio setup which has a 5.1 Logitech Z5300 and X-Fi Xtrememusic soundcard. The immediate difference I noticed was the depth of the imaging.
I presume they are fine. The amps had already been distributed to the village schools. We haven't return since July but will make a trip in February next year to survey.
Sorry bro... Redjr was referring to the amps he sent me.
The Note 2 was my first suspect... That's because my Optimus G was the same too.
According to Tripath datasheet, the TA2021 chip will be able power up with just 5.5mA at 12V.
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Sorry I meant 17.8A is overkill. 🙂 anyway, would a USB DAC like a schiit modi or an ODAC have an improvement on loudness you think?
I haven't read this whole thread, but I have 2 questions hoping you can save me a bit of time. 1) How does one identify the various versions of the Lepai TA2020? 2) Where can I buy a couple of them and know I'm getting the preferred or latest version as of 09/2013?
Links to the sites/posts where the answers exist will be fine.
Thanks.
Links to the sites/posts where the answers exist will be fine.
Thanks.
You mean a 20% bypass cap can't be fitted because it's too big?
And you're saying that a small cap is only for filtering noise on the PSU?
I thought that the idea of a really small cap was to supply voltage for high-freq. transients that a BIG cap can't?
1. You cannot differentiate the amp version from its look. To check, you must take the amp apart and look at its PCB.
2. The latest version currently is "23082013PCB Rev C". You can only get them directly from the suppliers in China. I am not sure if eBay has them yet.
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@6sigma
Looks like Parts Express bought the Lepai company
few months back. Call them and find out.
I would think that any other version on the
eBay might warrant a knock off - unless of course it
is someone affiliated with PE.
Last Lepai I received indicated that Lepai is
now Parts Express brand - mid August 2013.
Looks like Parts Express bought the Lepai company
few months back. Call them and find out.
I would think that any other version on the
eBay might warrant a knock off - unless of course it
is someone affiliated with PE.
Last Lepai I received indicated that Lepai is
now Parts Express brand - mid August 2013.
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