You mentioned hissing sound earlier on. If the level of noise is low, these should go away after running in. The level of noise should not be too high. I only know as a general rule legs of discrete components should be kept as short as possible but have never personally heard the noise induced as a result of long ones. Perhaps other forumers who have experience in this area may like to comment further.

kww, that is the spirit of diy audio, keep it up.

I am happy for you that your T-amp starts to sing finally; do allow it some time to run in.

Grandspy, any progress to the assembling and tweaking of your T-amp?

This seems old as a 20K ohm volume pot SHOULD sound louder than a 50K ohm unit; bearing in mind that P = I²R and accordingly I = √P/R. If your 20K ohm volume pot is mounted separately in another box, remember to use interconnects of short length with low capacitance value.

BTW, I will try to reschedule our meeting again sometime this week before we break for CNY holidays; my apology for failure to meet up last week.

With the rotary knob pointing directly at us and the soldering pins pointing up, I’ve always adopted:
Left for input (from the RCA), Middle for output (to T-amp board) and Right for Earthing. You determine front row pins for Right or Left channel yourself.

No need to go to work but could get to enjoy listening to music through the T-amp mah!

Wishing all T-ampers "Happy Chinese New Year" in advance, and

instead of Gong Xi Fa Cai 恭喜发财, let us just aim for Wan Shi Ru Yi 万事如意.

Jazzy,
Direct translation of Wan Shi Ru Yi is "Smoothness in Ten Thousand Matters", hence I'd pick "All the Best" to be the better meaning.
And, all the best to you too. Have some happy holidays ahead.

You meant this board per pix below? What would be your SP to us?



Attached thumbnail(s)

Although I have not experienced pre-warm up sound as ascribed by Dylan, I am a firm believer of electronics sounding better after 20 minutes of warming up after powering up.

Kww, is your T-amp dead silent without music signal passing through now that it should be properly run-in?

This post has been edited by Y.C.: Mar 5 2009, 11:23 AM

Kww, I'm fine but the same could not be said of our country's economy which is going to hit many of us soon. Don't worry too much on the warming up phenomenon if you can’t really tell as ignorance is bliss. I'm not able to zoom down the probable culprit(s) to your speakers' hiss if it's indeed caused by your T-amp. I believe it doesn't disturb your listening and DVD watching sessions.

Dylan, Your list of questions is long. Yes, do research before some further forum discussions. The NOS Sansui CD-X310 cdp at RM300 is excellent value.

US$31 is not the "Buy Now Price" but rather the highest bidding price recorded.

Finally, March.

JP Alpha 100KΩ volume pot is a linear potentiometer and effectively a voltage divider as rightfully pointed out by LittleGhost in this thread some time ago. According to him, using a higher value means having higher input impedance, noise and tracking. He advocates the use of low value pots so long that noise and tracking capability are not compromised. On this argument and info from this webpage (although meant for step attenuators), I'd tend to believe that a 20KΩ or 50KΩ volume pot is more suited for the TA2024 T-amp application.

The TA2024 chip has an in-built protection circuitry. It shuts down by its own when input voltage exceeds 14V DC as in the case of Lai when his SMPS went bust earlier on. Not too sure when it is overdriven though.

I'd say: Listening is believing! We are no reviewers and are not involved in the hifi trade but a bunch of audio buffs (enthusiasts) who got really excited by its sonics especially at its modest price. It may not be for everyone or beginners but for those who have been exposed to audio proper will appreciate it a lot more. What more could I say? Enjoy.

Thank you xtorm. Which pair of speakers? The Pioneer pure-malts? Yes, they are splendid to my ears.

You meant the malt beers? Ssshhhh... we should not be discussing that here!

Happy CNY, folks.

I listened to the 2 T-amps briefly (but not in my system though). I thought the TA-2024 has an overall leaner balance. Its high frequencies are slightly more extended than TA-2020mk3 and has more micro details plus an expressive forward midrange. The TA-2020mk3 has more power which translates to better bass weight, slam and a bigger and deeper soundstage that speakers totally disappear leaving a solid but rather laidback image. Its midrange is smoother but a little reticent to my liking. I thought it has a rather bright top-end but not extended enough that violins sound kinda funny!

I hope my comments would offend no-one. Cheers!

This post has been edited by Y.C.: Feb 24 2010, 02:29 PM