Hey,
Just received the Amp today, very new to audio equipment. Anyways to get to the problem, the thing isn't amplifying well, at all for that matter. You can't even hear the thing until it's past half volume, and at MAX it's still quite quiet. As i said i'm very new, so it could be something else i've done wrong, just wondering if anyone has had similar problems/solutions.
Thanks.
Just received the Amp today, very new to audio equipment. Anyways to get to the problem, the thing isn't amplifying well, at all for that matter. You can't even hear the thing until it's past half volume, and at MAX it's still quite quiet. As i said i'm very new, so it could be something else i've done wrong, just wondering if anyone has had similar problems/solutions.
Thanks.
The input sensitivity is 200mV, so almost anything should be able to drive it to full output. How do you have it hooked up,
and what power supply do you use? If you're trying to use it with a typical turntable, it can't do that.
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I have it hooked up Turntable -> Amp -> Speakers. Also I'm not using a power supply, is that pertinent to it working? Also what do you mean by 'Using it with a typical turntable won't work'.
Thanks for the help.
The amp won't function without its power supply. 12 volts DC with a current rating of 2 or 3 amperes is needed.
I believe what he means is...
A turntable cartridge outputs a very low-level signal. Nowhere near that 200mV of the Lepai input. The signal needs a preamp between turntable and power amp to boost the signal level to a usable range.
There is also the issue of RIAA equalization. Some EQ is used in making the vinyl record. (For mechanical reasons, not tone control.) An RIAA filter network reverses that EQ so that an (ideally) flat response signal goes to the power amp.
Long story short, if you want to source from a turntable you need a preamp with a phono input.
Alright thanks, Any reccomendation on a Preamp and power supply that will do the job, I'm on a fairly strict budget as of now, so nothing too crazy.
Ah, I was under the misconception that I needed to purchase a separate power supply. Yes, of course, I am using the power supply it came with, my mistake.
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Yeah but you'd think it'd ship with one. In fact in the title of the Amazon page it says "With power supply". Am I missing something here?
I thought the lepai comes with a brick PSU. It's odd to me this class d is able to pass through the signal and still be able to hear music even at low levels from the speakers. Is it April 1st lol
U need a PSU dude.
U need a PSU dude.
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For the power supply, I'd suggest looking at local thrift/surplus stores, or online at a reputable discount retailer.
For the preamp, you might find something DIY here in the Analog Line Level forum. If you can find an old receiver cheaply, you could use its phono input and take the output to the Lepai from the tape monitor. A brand new phono-preamp might start at about US$50.
For the preamp, you might find something DIY here in the Analog Line Level forum. If you can find an old receiver cheaply, you could use its phono input and take the output to the Lepai from the tape monitor. A brand new phono-preamp might start at about US$50.
Yes I'm aware, I was confused from an original response. I realize that electronics need power to run lol.
I'm confused now.
Do you or do yo not have a powersupply for the amp?
😕
A "brick" will have higher amperage than a small one that sits on the powerpoint on the wall.
An externally hosted image should be here but it was not working when we last tested it.
You can use as high amperage as you want, as long as it's 12 volts.
Might help us if you posted a picture of what you've got...
🙂
(Sorry if I repeat what someone else already said, as I'm new here on the forum and still "under moderation" so there's a slight delay)
Depends where yo buy them from.
I got some straight from Hong Kong and even though I specified Aus plug it still turned up with USA plug.
And it was only 1.2A I think.
Works best at a minimum of 2-2.5A
I have one I run at 15A from an old computer PSU I hacked and it goes pretty loud 😛
OK, so this is an old thread, but the issue is still current (pardon the pun). afaiac, the power supply used is (almost) everything. When I received my new Lepy, I tried the wall wart supply, then I tried an old Radio Shack transformer 2.5 amp 14 volt (no load) supply. The amp worked pretty well on the wall wart, but nothing spectacular. With the Radio Shack supply it was louder, but still no cigar. Then I tried a 9 amp computer switching supply and the results were very noticeable. Gone was the 'flat' wall of sound with all frequencies at about the same level. Instead I was hearing much better sound staging, much better dynamic range with individual instruments popping out with a three dimensional effect. All this with a pair of old Radio Shack medium sized tower speakers; two way with passive radiators which I replaced years ago with ports. I put my ancient Hitachi receiver back into its box and never looked back. Hints and tips on reworking a computer supply is another topic.
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