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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Proposed schematic posted by maxhifi on October 12, 2016 at 14:17:41:
Max - Although your circuit looks correct, it's overblown. First off, the Home Theatre amp (assuming it's solid state) doesn't need a dummy load at all. It can run all day without speakers. No load, no current drawn.
Second, using an 8 Ohm dummy load will parallel it with the output of your tube amp. Assuming an 8 Ohm speaker, the amp,. will always see it as 4 Ohms. Half of your power will be dissipated across the 8 Ohm resistor.
You can use a 100 Ohm, 5w resistor as the dummy load. As long as the tube amp. has a reasonably low resistance to reflect back into the amp, it will remain stable. You will lose about 8% of your power but the amp will be protected. 2 pcs. of DPDT switches should do it.
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Follow Ups
- alternate circuit RE: Proposed schematic - pmaneri@samsontech.com 15:06:38 10/12/16 (4)
- RE: alternate circuit RE: Proposed schematic - maxhifi 15:35:59 10/12/16 (3)
- RE: alternate circuit RE: Proposed schematic - pmaneri@samsontech.com 11:29:42 10/13/16 (2)
- RE: alternate circuit RE: Proposed schematic - maxhifi 08:56:57 10/14/16 (1)
- RE: alternate circuit RE: Proposed schematic - pmaneri@samsontech.com 11:06:06 10/14/16 (0)
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