Its unlikely I'll be able to attend. You guys go ahead and enjoy yourselves.

I've a strange feeling, those JP led's are likely of poor specifications and quality. It likely won't withstand more than 10mA current and at 1.7 to 2.2VDC. In this case the calculation with 20mA (about maximum safe value for standard LED) and fitting the suggested resistor will fry the LED. One safe method of determining the resistor value is to buy a multi turn precision trimmer of 2kohm value and connect in series to the LED. Set at maximum and then apply the voltage. Turn slowly to reduce the resistance while monitoring the brightness. Once the desired brightness is determined, measure the trim pot and obtain the nearest resistor matching the previous measurement.

They exist alright. Just you have a keen eye to spot them out. Have nice day folks!.

I'm not too trusting on China made electronic products nowadays. It makes me often wonder how they obtain loads of "audiophile name" capacitors that are so difficult to obtain and in limited production quantity, yet sell the built up item at too irresistible a price. Recently I came across a fake Elna Cerafine filter caps with terminals that easily snap off. I know Elna won't stoop as inferior as this.
Yep, I'm right in the middle of doing much things now, only a periodic 5 min break to read this forum.

This post has been edited by bsl555: Oct 25 2008, 01:53 PM

Can always increase the phono stage gain a bit more with a little mod.

Hey guys, its been a pleasure to meet you all eventhough I couldn't stay for long. If not for March05 persuading me at short notice, I'll not know when would be the next opportunity to witness the wonders of your individual T-amps.

I hope one of you power up the T-amp with a lead acid 12V car battery.

I've seen these very lookalike and with their own brandname. Come across these quite often in PRC hifi produce. Just like PRC made Neutrik, its worlds apart from the real thing made in EU. You get what you pay for.

Geez.. the speaker terminals are a bit too close for comfort. Your speaker cables be plug terminated otherwise careless bare wire connections may risk a short circuit.

Errr.. Sony dealers had a warehouse sale (so called) at Amcorp Mall from 7th to 9th Nov. I think I saw good bargains there for some Cybershots. Couple of hundred for something decent mar!..

This post has been edited by bsl555: Nov 9 2008, 07:05 PM

Not really THAT VSPS (very simple PS)!..unless you buy all the ready made main components and fit it all up together...thats the simple part of the project.
Actually some so called hi-end PS don't even come near it and moreover command a rediculously high price tag.
Split the PSU and phono stage to a 2 box design and it'll command even higher price tag.

This post has been edited by bsl555: Nov 10 2008, 11:10 PM

Caught you saying:
Just say upmarket brand of chip amplifier meant for car stereo's lah, and its really cheap to build up, have some fun with it, and result with our fellow forumer here Y.C., RM800 poorer learning the ropes of it all. (the fun as bonus of course!)

This post has been edited by bsl555: Nov 11 2008, 02:59 PM

Hmmm, I had a close look at some Meanwell models at one shop today. Just ok ok lah. Anyway, I've a feeling the 50W SMPS for your T-Amp is insufficent current, but bare minimum. You should think that the T-Amp would prefer power supply from something like a car battery (60Ampere hour) where its got ample DC current on tap.

This post has been edited by bsl555: Nov 14 2008, 07:56 PM

Its impossible the Tripath chip draws 300mA with musical signal. Musical signal consists of wide frequency changes and the current draw will vary with the music where there's bass and large volume change, something like what you notice on a VU meter. 60AHour is the rated battery capacity and obviously there's ample current on tap. Of course the amp won't draw the full amount, even the car headlights won't draw that much. The fact remains that a car battery have ample current capacity and will not compromise the potential of the T-amp.

March05: I could have passed you some length of domestic electrical wiring cable if you've said you have intention of using battery for the T-amp. The cables would do good for sure.

In practice any capacitor will last at least a decade or more regardless of how your equipment is being used. Similarly, there may be anything from a hundred or more capacitors inside a television set and contained in a very hostile enviroment, it'll still last for at least one and a half decade and anyone would think of dumping it by that time.
Capacitors may not last if its pushed to its operating limits in voltage and temperature.

March08
Sorry for off topic, it should look like discolored metal oxide 1-2W resistors that have failed due to over current draw. From past experience, many solder points on the power rail can easily deteriorate causing all sorts of malfunction and intermittent problems. Often the solder points are even seized to the point of no repair and have to be re-routed with point to point and hard wire. I've seen this kind of problem too often on Sony TV sets.
Back to capacitors. General Caps are rated at 85deg C and 105degC for hd ones. Thats quite hot in really. Water boils at 100deg C..so you may imagine the heat. I don't think any cap would reach even half that temperature.

Please don't do guesswork.

Let me point to you on how to select and apply a volume control pot.
You select 10k and you may have to turn to 12 to 3 o'clock for a decent volume.

http://www.goldpt.com/info.html

Acquiring amplifier chassis seems to be an eternal problem eversince 3 decades ago. Yep, you can get small boxes and only lately, extruded aluminum boxes for small projects. Thats why I had to stand on my head to get my tube amp chassis customed, but at a great price I can't get again. This is also one primary reason I'll not build any SS amp in future. I prefer and expect my own personal desired components acquired easily, no half past six work or a any old chassis for the sake of having one.

Ijan. The trouble is, LOG pots are not easily available at any Jalan Pasar 7-11. You get B types galore. You ask for A Log pots, the counter girl looks at you and think you're speaking French.
Anyway, I've always kept an Alps Blue 100K housed in a small extruded aluminum box as a passive pre standby for whatever personal purpose.

This post has been edited by bsl555: Nov 18 2008, 09:54 PM