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Old 25th February 2006, 07:36 PM   #1
ZuMbAiU is offline ZuMbAiU  Bulgaria
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Cool Any Ideas For this Power Supply?

I have one big,heavy,good ,beautiful transformer- 2x35V@40 Amps.
I looking for any schematics or any good project for this one.
I love the simple design with a few capacitors and resistors and many transistors,but I can build and any amp with IS`s.I have many materials +this PS =max W RMS from this project.
Thanks!
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Old 26th February 2006, 01:07 AM   #2
DIYdo is offline DIYdo  United Kingdom
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Some of these will do ya.

subwooferamp
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Old 26th February 2006, 10:23 AM   #3
ZuMbAiU is offline ZuMbAiU  Bulgaria
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Thanks for this reply,but I want build any project from this forum.
I love the Mosfet amplifiers ,but I can`t find any project for low voltage amps. I can build any transistor-amplifier or any other with integrals.
Can I speak for may be 2x450W RMS with this Power Supply ,because now I can`t pay for new transformer for any specific project?
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Old 26th February 2006, 12:08 PM   #4
AndrewT is offline AndrewT  Scotland
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Hi,
you have a number of choices with so much VA available.

the transformer can produce about+-50Vdc.
from this you can supply about
1. 18 no. 100W into 8ohm amplifiers.
2. 9 no. 200W into 4ohm amplifiers.
3. 4 no. 350W into 2ohm amplifiers.

If you bridge any of these options they can produce double the power into twice the load impedance.

1b. 8n0. 200W into 16ohm bridged amplifiers. + 2no 100W8r
2b. 4 no. 400W into 8ohm bridged amplifiers. +1no 200W4r
3b 2 no. 700W into 4ohm bridged amplifiers.

or combinations of these.

a remote supply with lots of rectifiers into separate smoothing banks could then be run to very compact amps located beside (inside) the speakers. 4pole plugs and sockets to connect everything back to PSU.

Sure looks like the start of 5.1 or 7.1 surround. (5*No.2. + 1*No.3b.)
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Old 26th February 2006, 01:14 PM   #5
ZuMbAiU is offline ZuMbAiU  Bulgaria
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I love the club sound!
The transformer is +35/-35/40 amps . Now i make two cabinets - 3 way ,700W Nominal RMS@8 Ohms,Selenium Profi drivers,WPU1509 for the lows.
I looking for any amp good for this cabinet configuration,may be 2x500W@8 Ohms is my PS is good.
Thanks
AndrewT!
Will be great if you can help me with any concrete project in my case.
I have many capcitors-10000uF/60V for this transformer. I love the sounding of the MOSFET.May be can help me ?
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Old 26th February 2006, 01:43 PM   #6
DIYdo is offline DIYdo  United Kingdom
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50 v rails with bipolar junction transistors into 4 ohm will usually give 300 Watts average. A MOSFET amp will give even less as the high Vds will reduce power output. You could alway build 2 BJT amp and BTL into 8 ohm.
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Old 26th February 2006, 04:14 PM   #7
edl is offline edl  Hungary
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Quote:
50 v rails with bipolar junction transistors into 4 ohm will usually give 300 Watts average.
That gives 200W-RMS and about 300W musical power. Average rather means rms power for me.
Regards.
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Old 26th February 2006, 06:43 PM   #8
ZuMbAiU is offline ZuMbAiU  Bulgaria
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YEs,but I speak for the 8 ohms RMS,because I have only 8 ohms cabinets now.
The question is: What is the max RMS for two mono blocks with this transformer.
Will be very good if anyone can help me with any concrete project ,because I wait 2 days for this
Thanks
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Old 26th February 2006, 06:58 PM   #9
AndrewT is offline AndrewT  Scotland
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Hi,
I realise you are not an English speaker, but go back and read post4.
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Old 26th February 2006, 07:02 PM   #10
AndrewT is offline AndrewT  Scotland
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Hi Zum,
you cannot add, two days = 48hours.

you posted @ 8.36pm yesterday and ask again @ 7.43pm today.

That's less than one day.

Don't exaggerate , I might get more annoyed.
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