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3 way speaker systems

opnly bafld said:
Where do the 18s cross to the 10s?
I assume your speakers use the 18" drivers like many others (people and companies) use subwoofers.
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Your assumption isn't entirely correct. Though eight of the same drivers are used in the original iMax systems as subs, in the 4345 system they are crossed at 290 Hz. My system is bi-amped using an electronic crossover set to 290 Hz, or thereabout. Pro-sound assumes a true sub is under 100 Hz even though many products sold as "subwoofers" today with often a 10-inch driver in a box probably range far higher in the frequency range. The versatility of the JBL 2245H is such that even JBL offered it in its own enclosure as a sub for home audio—the B460. In that application it is crossed at 63Hz
 
BMWCCA said:
Your assumption isn't entirely correct. Though eight of the same drivers are used in the original iMax systems as subs, in the 4345 system they are crossed at 290 Hz. My system is bi-amped using an electronic crossover set to 290 Hz, or thereabout. Pro-sound assumes a true sub is under 100 Hz even though many products sold as "subwoofers" today with often a 10-inch driver in a box probably range far higher in the frequency range. The versatility of the JBL 2245H is such that even JBL offered it in its own enclosure as a sub for home audio—the B460. In that application it is crossed at 63Hz
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What model JBL? I'd say if it has a 18" driver that is used as a sub in many systems you have a sub it just happens to be built into the speaker.
 
Porkloin said:
Being a lifelong Seattle audiophile, I had a pair of Two's before I could grow a decent beard. They were great, but if I could've bucked up the extra bucks, I'd have bought a pair of 2.5's, which were three way. I thought they had an edge on the Two's.
I have a pair of ESS Rock Monitors. The ESS two ways were reputed as notorious for the inability of their large 10" and 12" woofers reaching up to the exaggerated lower end of the AMT, so the Rock Monitor added a "transition driver" to extend the bass, essentially rendering it a three way. I'd pit it against any of the two ways that I've heard. Contrary to the reassurances of our favorite girlfriends, size does matter.
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Yeah. I own as set of the 1s and they do pretty well as the long throw 8" woofer can do good enough duty to dig down for some good bass, yet can also reach up far enough for some decent midrange.
 
kfa888 said:
What model JBL? I'd say if it has a 18" driver that is used as a sub in many systems you have a sub it just happens to be built into the speaker.
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I'd suggest you carefully re-read my reply to opnly bafld—which you re-quoted.
Everything you mention here is included and described in that response.
 
BMWCCA said:
I'd suggest you carefully re-read my reply to opnly bafld—which you re-quoted.
Everything you mention here is included and described in that response.
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So yeah, a HUGE cabinet (bigger than most subs) with three ports, a huge 18" driver used for subwoofers in other applications is totally not a sub... Got it. IMHO that's a sub with a nice three way built in. The only thing making that NOT a sub is the other drivers.

BTW my Genesis III's are speced at 28hz... Yours are 32hz but I'm sure you can reach much higher DB levels.
 
kfa888 said:
So yeah, a HUGE cabinet (bigger than most subs) with three ports, a huge 18" driver used for subwoofers in other applications is totally not a sub... Got it. IMHO that's a sub with a nice three way built in. The only thing making that NOT a sub is the other drivers.
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You can un-bunch your panties now. I don't really care if you dispute the facts, I'm only answering your questions. How you define a sub is incorrect. Where a driver is crossed is how you define its use. The smaller 15-inch 2235 is used in many JBL three-way systems and also by itself as a sub. That doesn't make it a "sub" in a 4333 or an L300 Summit.

This is not a pissing contest. JBL and Greg Timbers designed the 4345 to run the 2245H as a woofer with range up well beyond where it is used as a sub. In his own words: ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers
 
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kfa888 said:
Mclaren is not a race car.
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Really?
We learn something new every day:

1280px-1998_Goodwood_Festival_of_Speed_%2815781190981%29.jpg

McLaren_F1_GTR
 
BMWCCA said:
Really?
We learn something new every day:

1280px-1998_Goodwood_Festival_of_Speed_%2815781190981%29.jpg

McLaren_F1_GTR
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Exactly, just like I learned a huge 18" driver in a huge cabinet that goes to 32hz is not a sub. And like your not a sub this Mclaren seems to have a BMW motor.

Semantics are fun.
 
BMWCCA said:
You can un-bunch your panties now. I don't really care if you dispute the facts, I'm only answering your questions. How you define a sub is incorrect. Where a driver is crossed is how you define its use. The smaller 15-inch 2235 is used in many JBL three-way systems and also by itself as a sub. That doesn't make it a "sub" in a 4333 or an L300 Summit.

This is not a pissing contest. JBL and Greg Timbers designed the 4345 to run the 2245H as a woofer with range up well beyond where it is used as a sub. In his own words: ". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers
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When someone tells me, "Don't get your panties in a bunch," I always wonder how they knew I was wearing panties.
 
kfa888 said:
Exactly, just like I learned a huge 18" driver in a huge cabinet that goes to 32hz is not a sub. And like your not a sub this Mclaren seems to have a BMW motor.

Semantics are fun.
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And yet that same 12-cylinder engine when used in a Rolls Royce makes it also a race car?
 
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