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F5 power amplifier
F5 power amplifier
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Old 25th May 2011, 12:33 PM   #10651
Jbar1971 is offline Jbar1971  United States
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Default My F5

Here are some pictures of my F5. This is my first ever amp build. It is still not 100% complete, but it is making beautiful music! I wanted to keep the chassis small so the power supply is separate from the amp. Also I will be able to use the power supply for other F amps if I choose to experiment. Thank you to Nelson for providing such nice design. Thank you to all those who have built and posted before me, your pics and experiences have been helpful and inspirational.

Jim
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Old 25th May 2011, 01:20 PM   #10652
h_a is offline h_a  Europe
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Quote:
the power supply is separate from the amp.
Very good idea!

Keeps the humm out of the amp Even more so if you would like to go with a small chassis!

Just use sufficiently thick cabling and some onboard decoupling caps.

Hannes
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Old 25th May 2011, 08:18 PM   #10653
Dr.H is offline Dr.H
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Hi, can the first watt F5 drive very low impedance speaker? For example, the apogee scintilla, where the impedance drops to 0.5 ohms?
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Old 25th May 2011, 08:26 PM   #10654
Cr@sh is offline Cr@sh  United States
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Quote:
Originally Posted by Dr.H View Post
Hi, can the first watt F5 drive very low impedance speaker? For example, the apogee scintilla, where the impedance drops to 0.5 ohms?
I know a Dr.H who's all into crown amps, wierd
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Old 26th May 2011, 07:56 PM   #10655
Cr@sh is offline Cr@sh  United States
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Quote:
Originally Posted by h_a View Post
Very good idea!

Keeps the humm out of the amp Even more so if you would like to go with a small chassis!

Just use sufficiently thick cabling and some onboard decoupling caps.

Hannes
I never thought of that, but how much would it help? I'm getting ready to build my first 6v6 from boozhound labs and I want to make it the best I can.
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Old 26th May 2011, 08:09 PM   #10656
albertob is offline albertob  Spain
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Default two leds parallel

Hi friends,

I'm building an F5 and I'm using parts methacrylate. I'm using the plates cviller 1.1. The PCB has holes to solder LEDs with cable or mounted on the plate.

I can use this pair of holes to mount two LEDs in parallel with its corresponding resistance? Will it affect the sound charge led PSU with a more?.

The LEDs are blue.

Thanks for your reply. Excuse my English.
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Old 26th May 2011, 09:04 PM   #10657
Nelson Pass is offline Nelson Pass  United States
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F5 power amplifier
Quote:
Originally Posted by Dr.H View Post
Hi, can the first watt F5 drive very low impedance speaker? For example, the apogee scintilla, where the impedance drops to 0.5 ohms?
I believe I've answered this privately, but for the public record:

Not really.

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Old 26th May 2011, 09:42 PM   #10658
a.wayne is offline a.wayne  United States
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Driving the load is just half the equation , you will need 500 watts too .....
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Old 26th May 2011, 09:51 PM   #10659
jacco vermeulen is offline jacco vermeulen  Netherlands
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A single matchbook works wonders on Apo(lo)gees.
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Old 26th May 2011, 10:21 PM   #10660
Jbar1971 is offline Jbar1971  United States
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Quote:
Originally Posted by h_a View Post

Just use sufficiently thick cabling and some onboard decoupling caps.

Hannes
I think the cable is good. 12 gauge by four conductors. As I said I am new here and this is my first amp build. What is the reason for decoupling caps with a remote power supply?

Thank you,

Jim
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