Can I replace a 4 ohm speaker with a 4 ohm power resistor?

[pkc111]

TL;DR Summary

I have a single speaker powered by an off the shelf rechargeable boom-box. The speaker is 4 ohm 10W and I want to take the treble out completely as I am going to use it to drive a Ruben's tube. I was thinking of using a 2 way lowpass passive filter from Amazon inline before the speaker. I have read that they only work if there are 2 speakers connected, so would it work if I placed a 4 ohm power resistor across the tweeter speaker terminals and just used my speaker across the bass terminals?

Also would a passive filter add much resistance to the circuit and rob the speaker of power?
Here is the 2 way lowpass filter I was thinking of. I don't need 2 of these obviously but they seem to come as a pair.
https://www.amazon.com.au/dp/B07R613YSK/

 

[Tom.G]

so would it work if I placed a 4 ohm power resistor across the tweeter speaker terminals and just used my speaker across the bass terminals?

Yes, but usually not needed.
You could just not connect the Tweeter terminals at all. Or even short them if really needed.

Much easier/cheaper to adjust the tone controls on the amplifier.

Cheers,
Tom

 

[Baluncore]

I have read that they only work if there are 2 speakers connected, so would it work if I placed a 4 ohm power resistor across the tweeter speaker terminals and just used my speaker across the bass terminals?

Replace the tweeter with an approximately 4 ohm resistor. It is not critical, 3R9 or 4R7 would work OK.

Also would a passive filter add much resistance to the circuit and rob the speaker of power?

No. The losses in the filter are small.

 

[pkc111]

Thank you so much!
I agree the tone adjustment on the amp would be easier.. but it doesn't have one. Its the Tribit Stormbox
https://www.tribit.com/products/Tribit-StormBox-Portable-Speaker-Black