Speakers w/ Different Impedances - Power Differential

Hi all,

Here's the scenario.
Amp into 800hz crossover
8ohm woofer (amp power 350w, 97db sens)
16 ohm HF Driver (amp power 175w, 99db sens)
Total [email protected] 5.3ohms

Am I right in thinking that the HF Driver will be approximately 3db less due to the power differential?

Thanks for the help.

J

 

As always, thanks for your response. I'm still toying with a design concept using those Genz Faital 12350's and the FaitalPRO M5N8-80. I'm not quite there with the concept. The idea is is to emulate a guitar speaker with smooth response, extended lows, with a tapered top end.

I'll be building a cab, larger than what I have(marshall 2x12). Maybe 4.5 to 4.75 cuft.

Again, using it for bass and guitar duties.

I appreciate your feedback. Thanks again.

 

So, you kinda played into what I was hoping for l, which was broaden my perspective on other scenarios and how to apply the same logic. For example, I'd like to first have a go at a 1x12 with the mid range speaker. Mainly because it would be a cheaper learning experience than do the 2x12. Plus it'd be nice to have a smallish rig.

So in the case of using the same crossover with an 8ohm LF and HF drivers, the LF is going up roughly by half and the HF is going down, roughly by half. In this scenario, is the HF taking the brunt end of the power?

Is there something in the response charts I could utilize to better understand what to expect from combining drivers? Do you have any recommended reading material that approaches this from a simple approach?

Also, with form in mind, keeping my cab limited to a smaller size, but no less than 4.5 cuft, however with flexibility with round porting, so you see an issue with a box that size?

Could building any large-ish box wih the right porting, suffice for the use of the 12350's? I could I flex on box size, if so, by what margin?

Thanks again.

 

I had intended to seal the smaller driver off with its own slightly angled baffle for better upward projection. Also toying with the idea of a side firing port to throw some air back as the drummer on small stages. Not sure if that's a good idea being that I'm one of two guitarists in the band and the other won't be employing the same method. I'm certain I'll come off as louder.

Also, typically, what suffers from too large of an enclosure? What about too small of an enclosure?
I imagine overexcursion is very possible in both scenarios. Too much space in one cab and too big of a port to achieve lower tuning in the other.
Probably something that's been covereddd a million times on the forums, huh?

Thanks again.

 

I'm seeing a lot of "mid range" speakers that extend well passed 10khz and in some cases bump up in response from 6khz and up. In your experience, do these response charts decently represent the actual response of the speaker? Particatly the high end.

Note, I'm still trying to find a decent mid range speaker that has a natural high end roll off around 6 or 7khz that I can crossover somewhere around 800hz with the LF driver. Again, no tweater involved in the speaker network.

Thanks.

 

I agree, however I'm looking for a little more high end extension for cleanish guitar work. Thanks for the feedback everybody.

 

Don't you think the excursion limits are kind of low on those drivers, especially for a loud heavy, sometimes doomy, rock band playing in low tunings?