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First time F5 build
First time F5 build
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Old 28th September 2018, 08:41 PM   #11
jakesnake1 is offline jakesnake1  United States
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Oh never mind, .47Ohms. My bad
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Old 28th September 2018, 08:50 PM   #12
jakesnake1 is offline jakesnake1  United States
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There are also a wide range of resistances for the CL 60 thermistors. Are there some mathematical laws that will help me figure out what resistances I should be using for various components? That is my main source of confusion.
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Old 28th September 2018, 09:02 PM   #13
invaderzim is offline invaderzim  United States
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It is somewhat funny that the power supply boards were my biggest stumbling block when wanting to build my first amp. There are detailed builds and specific parts lists for the amp boards themselves but the parts lists for the power supplies are more fluid and often say things like "Use the appropriate part for your transformer voltage". I guess it is because of transformer differences and some of the amps using different voltages. But for those of us that don't understand all the math of the build it can be a bit to take on.

For the real amateur the jump from Amp Camp Amp to full build can be a sizeable challenge. Go, slow, read, read again, read one more time and then post what your plan is, then build and test as you go.
And realize when you ask a question many of the people answering know this stuff inside out, backwards and upside down so they may not instantly remember how little some of us know so be patient and ask again if necessary.

It looks like the various build threads have most of the components for the power supply mentioned but it does take some digging through them. When I built my M2 I went with the power supply boards from Tea-Bag on here and they came with a very good BOM at the time. I haven't been able to locate the BOM he had for them though.
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Old 28th September 2018, 09:06 PM   #14
invaderzim is offline invaderzim  United States
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Quote:
Originally Posted by jakesnake1 View Post
Oh never mind, .47Ohms. My bad
I think there are two of the 2.2K resistors for the bleeder resistors and the .47 are the filter resistors.
Aleph J illustrated build guide

Last edited by invaderzim; 28th September 2018 at 09:18 PM.
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Old 28th September 2018, 09:09 PM   #15
rayma is online now rayma  United States
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Quote:
Originally Posted by jakesnake1 View Post
I'm looking for 3w Panasonic 2.2k Ohm resistors?
Also does the resistance matter on the capacitors?

On the power supply board, each large resistor is 0.47 ohms, 3 watts.
The capacitors are rated for voltage and capacitance, not resistance.
The spec is 15000uF and 25V, but you are much better off with a higher
voltage rating, at least 35V.

Last edited by rayma; 28th September 2018 at 09:13 PM.
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Old 28th September 2018, 09:44 PM   #16
silasmellor is online now silasmellor  Denmark
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First time F5 build
Oh and having 3-5w for the 2.2k is a good idea as well.
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Old 28th September 2018, 10:10 PM   #17
rayma is online now rayma  United States
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Quote:
Originally Posted by silasmellor View Post
Oh and having 3-5w for the 2.2k is a good idea as well.
Just 1 watt is enough, but larger is ok if it fits on the board normally.
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Old 29th September 2018, 01:45 AM   #18
jakesnake1 is offline jakesnake1  United States
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Wow thank you so much the responses, I honestly was not expecting this much support. Makes me feel a h*ll of a lot better about building this.

Just out of curiosity, I'm planning on putting the rectifier and transformer in one box and the amplifier section in a different box for good airflow. I was thinking about building an F5t in the future and was wondering what I would have to change in the PSU to make it safe (Larger Transformer and Capacitors?).
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Old 29th September 2018, 01:58 AM   #19
jakesnake1 is offline jakesnake1  United States
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Thank you so much for the overwhelming support everyone, I cant tell you how helpful this is. Invaderzim, are you reading my mind through my screen? Scary. Anyways I'm in the process of putting a build list together as was suggested and will post it when completed.

In the meantime I had a random thought, I'm thinking about putting the PSU and the Amplifier in two different chassis for ventilation purposes. Is it okay to have a long distance wire run between the rectifier and the amp? And in turn a long distance run from the Amp to the speakers. Thanks again, can't believe how lucky I am to be able to ask all of you questions and actually get answers!!
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Old 29th September 2018, 02:00 AM   #20
jakesnake1 is offline jakesnake1  United States
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And can somebody recommend a tried and true set of Capacitors and CL60 thermistors? Tons of them.
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