50 Watt 8 ohm Dummy Load

[@Zonfeair]

Thank you one of the best explanations and builds of a dummy load. I am going to build this but will incorporate 4-8-16 ohms and at 100 watts and 200 watts with a selector switch for ohms and watts. I will also do it on a better heat sink with a fans for cooling. Again thank you. I will also be a subscriber.

[@timcolivet7343]

It looks great Dave, I was very impressed when I saw how cool it looked!

[@coltronex]

David adding BNC sockets on the unit you can then connect a scope to both outputs via your ground isolation,also a switch to select 4 ohms or 8 ohms,also an AC voltmeter socket to determine power output into your desired load,no criticism on your project its very good just food for discussion,best regards keep up the good work!

[@DavidHallettProjects]

Hi Colin, Thanks for your interest and suggestions. As I have nothing on my bench at the moment, I may use some of my time to make some mods to the load board. I don't use it often but the extra options could be useful. Thanks Dave

[@viewer54322]

Nice work, thanks for the top tip. Going to be making one similar. Subscribed as well

[@supersilve]

You should get yourself an old cpu heat sink with fan. There may be plenty around from old computers. if the area is not big enough you could fix a flat aluminum plate around 3mm thick to the cpu heat sink with countersunk bolts. The resistors will fit nicely then. I would also have fitted a BNC socket for the scope with a 10 to 1 resistive divider (90K-10k). Good tool for audio testing simple yet effective.

[@DavidHallettProjects]

Thank you for your comment, enjoy constructipn, Dave

[@LBCAndrew]

I'd use some thermal compound + a finned heatsink and a nice quiet 120mm fan.

[@johnbravo7542]

looks great,nice job.

[@DavidHallettProjects]

Thanks

[@itnefer4787]

Nice. What wattage should resistors be if I wanted to use it on a single channel 100 W guitar amp?

[@DavidHallettProjects]

You could use 4 x 50 watt but for sustained use I would use 2 x 16 ohm 100 watt resistors n a series parallel combination if you need an 8 ohm load. They will still get hot so the addition of a large heat sink or fan would help. Dave

[@MarcinII]

I think - it is 100W 8ohm for chanel. If You connected two resistrors 50W each...

[@DavidHallettProjects]

You are right, thanks.

[@DavidHallettProjects]

Thanks, only used it a couple of times but works well.

[@devinace7832]

I know it's kind of randomly asking but does anyone know a good site to watch new movies online?

[@paxtonzayd4293]

@Devin Ace Try Flixzone. You can find it on google =)

[@julianbraylen6049]

@Devin Ace try FlixZone. Just google for it :)

[@DavidHallettProjects]

@@julianbraylen6049 Would not be happy with this, I stick to Netflix Nd Prime