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Old 25th November 2010, 01:02 PM   #1141
Mamak is offline Mamak  Malaysia
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can dx blame st drive 12" car subwoofer?i want to build diy amplifier and car smps.anybody have suggestion to choose amplifier with high power to drive subwoofer?using 2sc5200 is good choice because this trnstor low price than other
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Old 26th November 2010, 03:02 PM   #1142
Larry49 is offline Larry49  Italy
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I am using dx st with a homemade car smps given me 35+35 volts and it's sound very good, I did not a test with a subwoofer....
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Old 27th November 2010, 03:46 AM   #1143
Mamak is offline Mamak  Malaysia
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DX Blame MKII Supercharged i see using mjl4281.that same or not with sc5200?
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Old 27th November 2010, 08:35 AM   #1144
Mamak is offline Mamak  Malaysia
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Quote:
Originally Posted by smartx21 View Post
I think you should read and follow this thread:

Are you ready to face strong emotions?.. Dx Blame MKII and the Supercharged release!

Regards,
Max.
smart,for dx blame st, can i parellel output amp to get double power like gainclone lm3886?
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Old 27th November 2010, 08:40 AM   #1145
AndrewT is online now AndrewT  Scotland
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Quote:
Originally Posted by Mamak View Post
smart,for dx blame st, can i parellel output amp to get double power like gainclone lm3886?
no, the paralleled 3886 can and does give problems if not built accurately.
Your DX st will be less well matched than a pair of 3886.

If you want you can try adding an extra pair of output devices.
But these need to be matched NPN to NPN and PNP to PNP before you build up the single output version.

Adding extra devices does not actually change the power output. Changing the load impedance an/or changing the PSU voltage changes the power output.
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Old 27th November 2010, 08:45 AM   #1146
AndrewT is online now AndrewT  Scotland
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Quote:
Originally Posted by Mamak View Post
DX Blame MKII Supercharged i see using mjl4281.that same or not with sc5200?
these devices are not the same
1943/5200 is 150W and 1A@70Vce
4281/4302 is 230W and 2.3A@70Vce
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Old 27th November 2010, 08:57 AM   #1147
Mamak is offline Mamak  Malaysia
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Quote:
Originally Posted by AndrewT View Post
these devices are not the same
1943/5200 is 150W and 1A@70Vce
4281/4302 is 230W and 2.3A@70Vce
so dx blame supercharger cannot using 2sc5200?
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Old 27th November 2010, 09:14 AM   #1148
AndrewT is online now AndrewT  Scotland
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one can use 5200 instead of 4281 but one must accept the limitations of the 5200 and not ask it to do the impossible.
low voltage supply and 4ohm speaker load should be OK.
medium voltage supply and 8ohm speaker load should be OK.
high voltage supply for 5200 is asking for unreliability.

Have you looked at the datasheets for your devices, not just the outputs?
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Old 1st December 2010, 08:10 PM   #1149
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Default I am back home folks....i need some time to read last 15 days posts

2SC5200 can be used Mamak...not the better option, but can be used.

We are having too much of these transistors counterfeit here...i do not know your place if you can have them original, or if you supplier deserves your confidence.

regards,

Carlos
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Old 1st December 2010, 09:51 PM   #1150
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Uncle Carlos,

It's Great to read your post again.
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