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Old 16th September 2011, 03:30 PM   #151
authlxl is offline authlxl  China
SINEWAVE ELECTRONICS CO.,LTD
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Quote:
Originally Posted by authlxl View Post
Normally T72-2 or T72-8 Iron powder core were fitted in our TAS5630 board,a bit hot when working.

We discussed with our magnetic factory days ago,now developed new type core for it.finally temperature can not exceed 40℃ even full loader (19A pause current)or long time working。

.V20 board use higher frequency SMPS IC ,higher power out.
.Auto Reset /over temperature protect/over current protect
.Variable Fan Speed Controller inside.
Lastest version G300v21 update finished, we revise it due to v20 version power reload time a bit longer, in g300v21 version, power off and on right now.
Looks same as v20 board.

Thanks!
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Old 26th September 2011, 01:21 AM   #152
lithoc is offline lithoc  Malaysia
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Quote:
Originally Posted by authlxl View Post
Lastest version G300v21 update finished, we revise it due to v20 version power reload time a bit longer, in g300v21 version, power off and on right now.
Looks same as v20 board.

Thanks!
Do you have any idea the red clipping led is light up even on low/moderate volume?

Does this mean the voltage power not enough?
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Old 29th September 2011, 02:07 AM   #153
authlxl is offline authlxl  China
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Quote:
Originally Posted by lithoc View Post
Do you have any idea the red clipping led is light up even on low/moderate volume?

Does this mean the voltage power not enough?

Sorry for reply late ,if red led light at low signal, only one problems tas chip shorted or chip power stage blow.

Most case, maybe output shorted, OC protection occur.
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Old 29th September 2011, 03:02 AM   #154
lithoc is offline lithoc  Malaysia
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Quote:
Originally Posted by authlxl View Post
Sorry for reply late ,if red led light at low signal, only one problems tas chip shorted or chip power stage blow.

Most case, maybe output shorted, OC protection occur.
Oh My, this have been there since day one.

So far I haven't test the unit pass 50% (based on the 10k pot).
At 20%, the clipping signal occasionally lit up for , bass heavy music.

But never notice any degrade in sound.
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Old 29th September 2011, 03:34 AM   #155
authlxl is offline authlxl  China
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Quote:
Originally Posted by lithoc View Post
Oh My, this have been there since day one.

So far I haven't test the unit pass 50% (based on the 10k pot).
At 20%, the clipping signal occasionally lit up for , bass heavy music.

But never notice any degrade in sound.
oh! no problems, maybe input signal over clip threshold. if red led light all the time, board error. if not ,no problems.
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Old 4th October 2011, 12:25 PM   #156
authlxl is offline authlxl  China
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Default 120v 50kHz snar amp finished ,24v dc power supply

we have finished lastest 150w sonar amp,suit for high frequency underwater acoustic communication and high quality Public address amplification.

Power supply: 18-30v 10A dc
Signal input: 1Vrms differencial signal.
Frequency Respon: 20Hz~50Khz +/-1dB
Amp type:class D,
Center Frequency:680Khz
Output: 90-130V rms (Btl out)
Efficiency: 80% full load

it can be assembled with PA amp,4-10ch and 2U case ,Battery and Ac power auto switch.
Attached Images
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File Type: jpg DSCF1947800600.jpg (192.8 KB, 416 views)
File Type: jpg DSCF1960800600.jpg (187.0 KB, 403 views)
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Old 4th October 2011, 12:34 PM   #157
authlxl is offline authlxl  China
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Default tda7294 active subwoofer amp module

Dual TDA7294 active subwoofer amp modules have finished, suit for high quality active subwoofer or other amp.

Aux smps for preamp power, rem control function and fixed BTL mode.

New type Resonant half bridge power ,stable and powerfull.

Input: 1Vrms
Frequency Respon: 20-20Khz +/-0.5dB
Loader: 150W/8ohm @ 10%THD+N.
112W/8ohm@1%THD+N
Aux power :+/- 12v 1000mA max
Power supply 110v or 230v 50 or 60Hz
Attached Images
File Type: jpg DSCF2087800600.jpg (231.4 KB, 415 views)
File Type: jpg DSCF2089800600.jpg (179.5 KB, 399 views)
File Type: jpg DSCF2104800600.jpg (200.7 KB, 103 views)
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Old 4th October 2011, 10:29 PM   #158
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Quote:
Originally Posted by authlxl View Post
Dual TDA7294 active subwoofer amp modules have finished, suit for high quality active subwoofer or other amp.

Aux smps for preamp power, rem control function and fixed BTL mode.

New type Resonant half bridge power ,stable and powerfull.

Input: 1Vrms
Frequency Respon: 20-20Khz +/-0.5dB
Loader: 150W/8ohm @ 10%THD+N.
112W/8ohm@1%THD+N
Aux power :+/- 12v 1000mA max
Power supply 110v or 230v 50 or 60Hz
Interesting... how much and where can I buy one?
__________________
Rubycon || Nichicon
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Old 21st October 2011, 10:37 PM   #159
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Quote:
Originally Posted by authlxl View Post
we have finished lastest 150w sonar amp,suit for high frequency underwater acoustic communication and high quality Public address amplification.

Power supply: 18-30v 10A dc
Signal input: 1Vrms differencial signal.
Frequency Respon: 20Hz~50Khz +/-1dB
Amp type:class D,
Center Frequency:680Khz
Output: 90-130V rms (Btl out)
Efficiency: 80% full load

it can be assembled with PA amp,4-10ch and 2U case ,Battery and Ac power auto switch.
Very nice. What did you use for this circuit? Can we have a schematic? And what about linearity if used with speakers instead of transducers?
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Old 24th October 2011, 01:38 PM   #160
authlxl is offline authlxl  China
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Quote:
Originally Posted by saratoga View Post
Very nice. What did you use for this circuit? Can we have a schematic? And what about linearity if used with speakers instead of transducers?
oh ! sorry it is our commerical product, schematic useless, if want make it stable and mass manufacture ,rich experience core human necessary.

Frequency respone and S/N good ,manufacture technology is the determinants of success.

The human resource is becoming the key point of a company's success or failure.
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