I think you may have your magnification turned up too high.
I was referring to the wires being cut the exact same length.
As to the rest of it I really do not have time to debate theoretical issues about Linkwitz crossover design or why JBL do and didn't do certain things with their products.
You can be assured however they are both classic examples of sound engineering practise with respect to real world considerations.
Ian
[QUOTE=whej4312]Time alignment is critical in any application. Ian do you remember the L300? Everest? Why were the faces of the cabinets back 5 to 15 degrees?
QUOTE]
Pigs arse,
They (L300) were angled slightly back due to the limited vertical dispersion of the drivers.
Any idiot could tell you that.
There's no fancy theoretical rocket science with this stuff
If your gonna bullshit at least do it properly and check your references...that way won't notice so much.
Ian:o
Ian, calm down boy.
Group Delay is a BS answer. I really don't doubt that the coffee engineer is putting some good practical design engineering into the mix and quite likely is designing a speaker that images better than most JBLs. Many people have.
As for precise wire length... other than to maintain specific resistance goals, there is no reason (that I know of) to jump through those hoops. In the design of microwave communications equipment wire length and even shape make a difference, but last time I checked we were listening to Hz-KHz not GHz.
Many designers will focus a bit too much in one area or another. In the halls of audio marketing they turn up the BS factor to 11, but I assume this guy is still a believer and not a snake oil salesman.
Please do find out what components he is using as well as crossover topology and price... a photo or two would also be nice.
I would love to see what he is up to.
Widget
BTW: I agree with whej4312. I think your imaging would improve dramatically if your baffles were treated or narrowed to 8", but I have mentioned this before.
Just build some mini-L250/250Ti pyramids for the 8-inch 3-ways.Originally Posted by Mr. Widget
Dammit, Giskard!!
Doods...
Where were you guys?? When I read the original post I just shrugged it off and decided I hadn't sufficient time. Plus, unless we can post directly with Mr. Grounds, debating what was heard and seen would be fairly unproductive.
It would be nice to get some photos and descriptions from Mr. Grounds himself, so that he can explain his design.
'nuff said.
bo
"Indeed, not!!"
Thats too funny.
Perhaps a Columbian connection.
Oldmics
Do it now! - your Gov's inflection.Dammit, Giskard!!
I guess I don't spend much time thinking about the Governator. It took me until now to figure that one out.
Widget
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