[Alev Tav]

Confirmed Details
Location: Burlington Square
Date/Time: 2009 Oct 31, Saturday 2pm to 5pm

Please feel free to bring your own sources/amps/DAC to try out the speakers

[wwenze]

Today is 2009 Oct 27

[tabako]

LOL ya lor, you post too late.

[Alev Tav]

Thanks for pointing out the error, it should be 31st Saturday.

[Ar3s]

So i can go listen, and after the test purchase straight away or must come back and wait for the MO (weird)

[AsuraN]

me keen~

[wwenze]

Originally Posted by Ar3s

So i can go listen, and after the test purchase straight away or must come back and wait for the MO (weird)

MO is for newer version amp, Alev Tav currently has older version, correct me if I'm wrong.

[naro]

hey alev tav, the audition and the $125 bundle deal is for the speakers and SDA-1000 amp?

whats the difference between the SDA-1000 and SDA-1100 amp??

[tensor]

a quick analysis of the peektures.
the difference between both the units is just that SDA-1100 has a better looking casing and case feets.

Imho, its definately worth the extra for a better looking case.

anyway anyone game to modify their scythe amp to 20Watts.
Its a simple matter of modifying some wiring nia.


the system gain can also be adjusted.

[wwenze]

The insides are different:

SDA-1000


SDA-1100


SDA-1100 has better layout and components IMHO.

Don't be misled by just them using the same chips, so many T-Amps using the same chip but so different performance. And manufacturors usually quote component specs hence every spec is the same and higher than in real life.

In the same vein, I can't believe this thing to be 10wpc - probably max output at high levels of distortion and 4 ohms. If they bundle a 20W PSU maybe I can believe. Real decent output power at different voltages can be found in the datasheet.

BTW, @tensor: The wiring shown appears to be paralleling the 2 channels rather than bridging, which improves performance for low impedance load but does not increase power output if you never change your speaker from 8 ohm to 4 ohm.

From the datasheet can also see that this thing can't drive 4 ohm speakers unless you parallel the channels. Not a good indication of performance.

Also, adjusting gain does not increase max output.

[tensor]

err... dont think i mentioned adjusting gain to increase max outout wor..
What i wanna to achieve is reduce the overall gain on the amp.

yes modification is specifically mentioned in the cct for a 20W x 1Ch to 4ohm spk.
psu aint a biggie, since the psu will be swapped with a better unit

The main idea is to push the chip's capability.

[wwenze]

Originally Posted by tensor

err... dont think i mentioned adjusting gain to increase max outout wor..
What i wanna to achieve is reduce the overall gain on the amp.

yes modification is specifically mentioned in the cct for a 20W x 1Ch to 4ohm spk.
psu aint a biggie, since the psu will be swapped with a better unit

Then paiseh for misunderstanding.

On thing puzzles me though... how can a 12V amp produce 20W of output into 4 ohms? (see theory here)

[tensor]

hmmz just note on the difference between Tripath and Yahama's Digital Amp.
1. T-Amp uses a "special" algorithm to process the audio signal
2. It need a Low-Pass Filter on its output. <- guess that one of the reason y there's large differences on how each brand sounds, iirc designers can even choose different drivers.

It kinda interesting how well does the yamaha chip performs since it doesnt require such filters

[Alev Tav]

Originally Posted by naro

hey alev tav, the audition and the $125 bundle deal is for the speakers and SDA-1000 amp?

Yes.

whats the difference between the SDA-1000 and SDA-1100 amp??

The SDA-1100 has a slightly different internal layout and better looking exterior.

[Alev Tav]

Originally Posted by wwenze

The insides are different:

SDA-1000

This appears to be a very early revision. The SDA-1000 looks much more similar to the SDA-1100.