Red to 12V+ and black to GND, make sure your battery is fully charged

See attached picture for reference.

The RED wire on the right is the positive, ie "+"
The BLACK wire on the LEFT is negative or GROUND, "-"

These will be clearly marked on the T-Amp board. Don't mess up, otherwise the board/chip will be permanently damage!



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But when the battery is fully charged, the voltage can sometimes be as high as 14 volts....wouldn't that be bad? Perhaps a simple 12 v voltage regulator would be useful?

I'm a lil lost here. How old is your son if you're only 36?

the chip is good up till 16v

mostly ppl are setting it up at 13.8v

btw jazzy, battery is better? i tot i read smps is the best, nvrmind try it out and let us know!!

this board is fun, im tesing out half filter theory at the output now

Bro March,

My son is my second set of ears as he is much more critical listener than I am..
also my eardrums at this age has definitely deteriorated.. Too much exposure to good 'noise'

It would be interesting to know if these mods would also improve your TA2022.. time to plug in your soldering iron, eh?

This post has been edited by jazzy939: Aug 16 2008, 06:29 PM

Y.C.,
Don't believe what you read 'there'.. it's to confuse the enemies
BTW, He just completed his Diploma in Mechanical Engineering. Guess he chose to be just like his dad

xtorm,
Initially I was plannng to take the SMPS path, but after reading Red Wine's philosophy's on why they're using SLA in their design, it make more sense to me!
I also believe in minimalization, therefore LESS is MORE

However I have NOT finalized the power supply part yet. I have to complete the burn in session first.
Then the audition would be more meaningful.

I have 2 SMPS on standby..

but using the battery i think you have to design somehow the recharging mechanism so it will be ease every time need to recharge the battery......and more convenient just like wed wine audio does.....and much more boutique looked alike....

a clean power for you amp....vroooooommmmm


12V how long can last ??????

This post has been edited by gabanyayaya: Aug 16 2008, 06:43 PM

yes, you definitely need a charger, either built-in with the assembly or separate external one. Like Red Wine's unit, a rocker switch will put the amp either in 'battery power mode' or 'battery charging mode'. RED LED: Battery charging; GREEN LED Battery fully charged.
It is not that 'hard' to include such a circuit.. only added 'cost'.

I chose my spare DIN55 battery as I already have the charger for it

Red Wine's unit one should last between 4-6 hours of continuous usage.
Then again it all depends on the discharge current against the battery capacity. The bigger, the longer!

Isn't it a simple thing to have two batteries, and swap them over when the one in use starts to run down? To me, adding a charger into the system runs the risk of adding noise into the power supply.....back to square one.

Bro March,
Back to KISS ya!

The charger will NOT be energized when the battery is used during normal operation.. well that is what the Red Wine's unit was designed.
In fact the charger is an external unit, to be plugged in when you're done listening until the next session. It takes roughly an hour to fully charge that SLA...

BTW, how much would an SLA costs?

separate also can but you need to build another casing...you can't just connect it using a wire between a battery and the amp...that's just look so awful and you have made a fashion crime.....LOL....

i think the charger circuit is just simple as it can be....and if noise is an issue here just wraps it with foil....btw i heard make sure wire between power and signal is isolated firmly so they will be no interferences IMHO...

This is one of a simple SLA charging circuit..




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can you make one in 15 minutes?

Definitely not!
If I have all the parts.. 17 minutes, maybe!

This one may...



This post has been edited by jazzy939: Aug 16 2008, 07:11 PM


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There is something about that logic of having an integrated charger that troubles me....if the battery runs down while you are in the midst of a nice jazz session, then you'll have to stop for an hour to recharge it, by which time the magic is broken..... whereas a spare battery is only a simple few seconds swap, and you continue merrily.

SLAs are ubiquitous items nowadays....the 7 amphours ones are going for around RM40 (local made?) - RM90 (good Japanese branded) in JP. DIN55 for your car....the maintenance free type, maybe RM400...(argggg--toothache).

gabanyayaya, I'm sure you can make a beautiful casing which can be opened easily, right? Even an undressed SLA can be hidden somewhere with just a gold plated (if you really want fashionable ones) cable leading to it.

Bro March,
I acknowledged your concerns.. that is why I opted NOT to take that path.
4-6 hours is kinda long listening time to me.. Do you spend that long listening ya?
Then a second backup battery is a good option! While the second battery is good for another 4-6 hours, within the hour the 1st battery will be fully charged.. ready to replace the second one... sounds good eh?

Rm40? RM80 for 2..thats not bad..

I had my DIN55 for 1/2 that said price.. now NOT doing anything, might as well use it for this purpose! No additioal cost incurred!
Did I mentioned that I also have a charger for that?

hehehe...that's jazzy....


yes....can also but we have a philosophy here....KIS and my philosophy is Keep it Cheap - KIP.... cheap cheap cheap...

with 7A/hr battery I believe under normal listening condition this amp can last >15 hours.