killer idea!!

[Trento54]

I just had a idea!!

 

Ok it is a thing that runs at 8 ohm but is not a speaker so when you plug it into a 4ohm amp with another cabnet the amp runs at full watage !

would it work ?

[Gruven]

You mean an 8 ohm resistor in parallel with your speaker?

 

Hasn't that been done before?

[Trento54]

it would cost liek 10 bucks way cheaper then a nother cab

[SoundwaveLove]

its called a dummy load

[Trento54]

dammit

i knew it was to good fot me to make up

[Gruven]

 

Originally posted by SoundwaveLove its called a dummy load

 

Does it work?

[Trento54]

if it does i will buy one!

[fake-bass]

hey sick one...thats an uber rad idea, even if you didnt originally think of it!

[bassplayinguy]

the problem with them is that they take a very high wattage resistor... which are expensive... and they create alot of heat... which is just wasted power

[Trento54]

oh dang!

so do you think i should get 2 x 10 instead?

[sunburstbasser]

What your thinking of is something that changes the cabs impedance, not its resistance. So no, it wouldn't be a huge resistor.

 

How many more watts are you gonna get at 4 ohms? I know my old GK got something like 40 more, about 1 dB in volume cranked. If you get ~200 watts more get a dummy load OR 2x10. Cause more speakers are always fun! But otherwise, you probably won't get much more out of it if you just had a dummy load.

 

You might be better off getting a DI Box to run into the PA, instead of a new cab. Or lining out your amp.

[Ace Of Bass]

A dummy load is usually a coil of wire wrapped around a bar that dissapates heat--so yes, it works well to raise impedance. but, you're not going to be running at "full wattage" in any meaningful way.

You're amp will put out twice the wattage, yes, but half of that will go to the 8-ohm cab, and half will go to the dummy load and get turned into heat. So, overall, you'll be working your amp twice as hard to put out the same amount of sound (actually, a little less, since you don't quite double wattage.)

 

What you need is an output transformer, not a dummy load.

Expect that to be extremely expensive.

[JeffBass]

My GK700 gets an additional 155 watts (225 to 380 on woofer amp) when I add my additional 2x10 cab to = 4 ohm load. For bigger gigs I bring the extra cab and it's LOUD.

[Ace Of Bass]

 

Originally posted by JeffBass My GK700 gets an additional 155 watts (225 to 380 on woofer amp) when I add my additional 2x10 cab to = 4 ohm load. For bigger gigs I bring the extra cab and it's LOUD.

 

 

You're adding drivers, too.

doubling the # of drivers while keeping the power (wattage) the same increases volume much more than the extra 155 watts will.

[JeffBass]

That makes sense because I never push the thing past 4 (less than half) before the soundman starts complaining about my stage volume! Soundmen can be a real pain....

[sunburstbasser]

Yeah, drivers add more volume by far than watts.

 

I think the ratio is something like 10x the wattage doubles the volume.

[Jazz Ad]

This idea is an excellent way to lose power and eat more juice at the same time.

 

Good idea if your rehearsal room is a bit cold though.