[justd]

BTW, which power supplies are you using.

[rjyap]

SMPS800R for FL/FR channel and SMPS500R for the rest. My initial design is using a single SMSP2000R but Christi from Connex advice that one power supply with each board is a better design. In the future, if I go for 11 channels, will consider building another 3 channel power amp using nCore 400. The review so far look interesting but far more expensive than ClassDAudio. Each channel would cost around USD 800 while ClassDAudio is 2 channels around USD 360 - 1 channel = USD 180.

[runemaster]

Relax. Tom is a man of very few words.

Hi. Since he is not replying me after such a long period, any advice you can offer me?

Thanks

[john dozier]

Tom has several email addresses on the website. Only one seems to work well. I have forgotten which one, but found it worked well with quick replies. You will just have to try all of them. Regards

[Rclark]

SMPS800R for FL/FR channel and SMPS500R for the rest. My initial design is using a single SMSP2000R but Christi from Connex advice that one power supply with each board is a better design. In the future, if I go for 11 channels, will consider building another 3 channel power amp using nCore 400. The review so far look interesting but far more expensive than ClassDAudio. Each channel would cost around USD 800 while ClassDAudio is 2 channels around USD 360 - 1 channel = USD 180.

toooootally worth it.

[rjyap]

Hi. Since he is not replying me after such a long period, any advice you can offer me?

Thanks

Try sales@classdaudio.com. I had no problem getting a reply from him last 2 weeks.

[rjyap]

toooootally worth it.

I had followed nCore thread and started to plan for the future. Anyway, anyone feel that ClassDAudio amp need some warm up time before sounding the best? In my system, the initial 20 mins sound a bit flat but after that, the vocal start to float out a bit and I can hear good separation of vocal against the background music.

[Rclark]

Pretty much all amps need time to warm up and sound their best.

[firedog]

I don't really like to do it, by my system sounds best when left on all the time. I think this is generally true for electronics - leave them on and they sound their best.

[runemaster]

Try sales@classdaudio.com. I had no problem getting a reply from him last 2 weeks.

Tried, and no reply......

What should i do.........

[firedog]

call on the phone?

[runemaster]

call on the phone?

I am not from the US. Does he have any other contact means other than email? Skype?

[rjyap]

I had no problem getting a response from Tom yesterday. Also found out that the IRS module is inverted amp when running in stereo mode. If you use it with Audyssey, the phase warning will pop out. Just reverse the polarity for speaker output. No problem if you only run with 2 speakers without a sub.

[runemaster]

I had no problem getting a response from Tom yesterday. Also found out that the IRS module is inverted amp when running in stereo mode. If you use it with Audyssey, the phase warning will pop out. Just reverse the polarity for speaker output. No problem if you only run with 2 speakers without a sub.

Oh, so can I assume that he's ignoring me purposely?

[rjyap]

Maybe your email go to spam folder? I don't see why he purposely ignore you? Previously I send back the SDS-4 module due to some issue but he fix that within 2 weeks.

[mummykicks]

So, would something like a pure I-20 work with one of these amps?
Or would you still need a separate pre-amp?

[mikeeastman]

I'm building a SDS 254 amp with the D/C power supply, to run off batteries. On the amp and power supply boards one of the screws that hold the boards to the chassis is labeled chassis gnd  , as the screw is not connected to the chassis should I run a wire from the screws to the chassis or is this not necessary because the amp is D/C powered?

   

[TrungT]

Mike
You do need those ground.

[mikeeastman]

Thanks Trung, then I can just run a wire from the screws to the chassis?

[TrungT]

If your chassis grounded, Yes.