Ahhh bro ongbs,
Good to know that!
Am definitely will be getting that 1.3A SMPS.. building one for 'junior' to play

xtorm,
yes, I will do that soon. the copper wire that I got from my supplier is expensive!
To keep the cost down, I may resort to getting them coppers from busted psu's and what nots
Recycling!!!

Yes, those elcheapo won't last that long. The heat will erode the bit in no time.. it's worthwhile to invest in a good one that will last 'forever'

There's alot of online tutorials/infos..
You start with basic electrics and then move on to electronics.

Start here: Basic Electronics Online Tutorial
Basic Audio Amplifier
Basic Transistor Amplifier

This post has been edited by jazzy939: Aug 29 2008, 11:16 PM

Yep. sortof 'jazzy jr"

Wahhh.. so much 'junks' to korek2? Any junks you wanna get rid of?

How much would an old transformer costs?

Yep. I found that out yesterday!
They go by the kilos!

Just powered my SMPS!
min. voltage can be adjusted: 9.98
max. voltage can be adjusted: 14.73

Will connect to T-Amp after 'warming up'... need to 'memorized' the sound first..
Need to know before and after SMPS..

This post has been edited by jazzy939: Aug 29 2008, 11:47 PM

ongbs,
the inductor, with the required capacitor forms part of the filtering network to filter only the modulation which includes the audio signal.
Whats left after the filtering is the great sound we heard...
Therefore, without this filter, Class D would not work.

More stuffs to read here: Class D Amplifiers

This post has been edited by jazzy939: Aug 29 2008, 11:46 PM

Not at all...

Now auditioning of SMPS in session!

Will report soon.. few extra things I picked up (sonically)...

xtorm,
no worries! Substitues must be better, NOT less. We can't short change our super duper T-Amp, can't we?

Will NOT do the toroid inductor testing yet. The SMPS is progressing. Need to know and familiar myself with sounds first.
If too much mods are done at the same time, can't keep track whats affecting what...

Mooncake boxes for T-Amp casing eh? Thinking 'outside the box' eh?

This post has been edited by jazzy939: Aug 30 2008, 12:42 AM

xtorm,
you're darn right!

file holder! pretty resourceful!

3: 1-forward speakers, 1-rear speakers, 1-sub-woofer?

The long awaited review is here!

After 1 hour of warming up and 1 hour of listening.
Comparisons are made using the T-Amp that has clocked >45 hours burn in.
Initial power supply was a DIY Bench PSU, rated at 3A. Voltage used was 12.6VDC
The unit under scrutiny is a SMPS, rated at 4.3A. Voltage set was 12.34VDC
No changes to main unit made(T-Amp)
Main CD used; Jim Tomlinson-Brazillian Sketches and some other fav CDs to check out a few aspects of the sounds.

Do not expect a day and night type of differences.
I'll make this brief... it's half past one!

Found the music is on a slightly 'faster' beat. Better in the 'attack/decay' department.
Vocals and percussions really stood out.
On linear PSU they are quite laid back and 'slight' mellow.
On SMPS, they're slightly forward. I just love the sounds of percussions, cymbals sounded so natural...
On the track 'I Concentrate On You' not only I could hear the fingers moving on the guitar's strings and frets, I could 'feel' it.
Still on guitar, not only I hear the notes as the results of the strings being pluck, I could 'hear' the plucking too!

On the track 'Gentle rain', the saxaphone being played can make your hair 'stand'. You 'feel' the saxaphone being played right in front of you..
This goes through out the entire album!
Same track, before the start of the singing, I could actually detect when Stacey Kent started to open her lips... I wasn't aware of this earlier!

Bass on the linear PSU was rather tightly controlled. Some may like this. I used to...
ON SMPS, the bass is now 'breathing'. Can be misinterpreted as 'loose'.. Extended listening confirmed this. Bass now is simply bass!! Period.
I especially love the weight in the mid bass without losing the low end..this was very evident and was heard when the burn in is more than 45 hours, as I reported earlier. The SMPS really sums this up nicely.

The overall soundstage is just slightly spacious.. but I sensed a deeper depth.. even sitting to one side of the speakers it is quite obvious.
Now not only you hear music, you can feel/experience it too.

Before this a few days back, I did use a 'laptop' type SMPS, rated at 2.5A, 12VDC. Very subtle changes in certain part of sounds but NOT overall. In this instances, I still prefer the linear PSU instead.

Now, this so called 'industrial grade' SMPS is wayyyy better! Will NOT be switching back to linear PSU for now..

Conclusion: T-Amp + SMPS= marriage made in heaven

No I don't!

Don't thank me! I picked this up 'somewhere' too.. an 'escape clause'

Smart move that one! Selling it!

ok. 'deep tune' is out of my league..

you're welcome bro ongbs.

I also can't wait to see/hear how those toroid inductors will perform...
Personally I think it may not be much...

My thoughts, exactly!!
u're still up?
me still spinning more CDs... new things to hear!

those inductors are just filters to remove the modulation from the audio.. but then again, you may be right!

Welcome to the club!!!

Oh.. one more thing, I can really turn the volume up! higher than 10 o'clock position on my pre-amp.
normally 9-9.30 position would suffice!

battery port? what u mean?

8.5A is really going overboard! but if you wanna connect the T-Amp outputs in parallel, why NOT!

SMPS to charge SLA?
Me not using SLA liao...

xtorm, u're talking in 'dutch' ler.. me no comprende..

HAHAHA...
Oh yeah.. I am nearing 4 hours for a total of 50 hours.