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[Jean-Pierre Coetzee]

http://www.jblpro.com/catalog/general/Product.aspx?PId=118&MId=3

Frequency response : 33Hz - 220 kHz

I think not.

[Ivan Beaver]

http://www.jblpro.com/catalog/general/Product.aspx?PId=118&MId=3

Frequency response : 33Hz - 220 kHz

I think not.

Typical error when the guys writing the specs are not technical and they see something "different" and then change it to meet what they are used to seeing.

"Obviously the engineer who wrote this must be wrong" is their thought process.

It happens to everytbody.

[Bob Leonard]

http://www.jblpro.com/catalog/general/Product.aspx?PId=118&MId=3

Frequency response : 33Hz - 220 kHz

I think not.

JBL also thinks not. It's been corrected on the web site to read 220hz last time I looked.

[Dave Dermont]

Typical error when the guys writing the specs are not technical and they see something "different" and then change it to meet what they are used to seeing.

"Obviously the engineer who wrote this must be wrong" is their thought process.

It happens to everytbody.

Even when a document is proof-read by three different people, including one specifically looking for technical mistakes, (Not ME, of course!) it's amazing how many mistakes can slip by.

[Benjamin D. HIll]

JBL also thinks not. It's been corrected on the web site to read 220hz last time I looked.

the +- 10 is right the +-3 is wrong.

[Sheldon Harris]

Typical error when the guys writing the specs are not technical and they see something "different" and then change it to meet what they are used to seeing.

"Obviously the engineer who wrote this must be wrong" is their thought process.

It happens to everytbody.

quite a few products manufactured on "the other side of the world" give very wrong and or misleading info in the manuals.
wrong direction of airflow in amplifiers, wrong fuse value for operation at 240v vs. 120v (to the marketing guys, higher voltage should equal bigger fuse!) and i can go on........

[Mac Kerr]

Typical error when the guys writing the specs are not technical and they see something "different" and then change it to meet what they are used to seeing.

"Obviously the engineer who wrote this must be wrong" is their thought process.

It happens to everytbody.

quite a few products manufactured on "the other side of the world" give very wrong and or misleading info in the manuals.
wrong direction of airflow in amplifiers, wrong fuse value for operation at 240v vs. 120v (to the marketing guys, higher voltage should equal bigger fuse!) and i can go on........

Sheldon, could you explain to me the bit about higher voltage needing bigger fuses?

Mac

[Sheldon Harris]

quite a few products manufactured on "the other side of the world" give very wrong and or misleading info in the manuals.
wrong direction of airflow in amplifiers, wrong fuse value for operation at 240v vs. 120v (to the marketing guys, higher voltage should equal bigger fuse!) and i can go on........


Sheldon, could you explain to me the bit about higher voltage needing bigger fuses?

Mac

post should be read and understood as: marketing guys sometime make the mistake of believing higher voltages need bigger fuses in converting from 120v to 240v operation

higher voltages need smaller fuses, i was making a point about misleading information on the part of marketing. its in reference to the comment that marketing change what was witen by the enginers becasue they think its an error.
i have seen several manuals from products made in china that states a fuse twice as big is needed for 240v operation when in fact its opposite: an obvious mistake on the part of marketing simply becasue no electrical eninneer would make a mistake like that.
sheldon

[Jonathan Goodall]

Again from a JBL cat where missing a decimal point can completely change the specs.

http://srforums.prosoundweb.com/index.php/m/569379/22271/#msg_569379

[Chris Davis]

JBL also thinks not. It's been corrected on the web site to read 220hz last time I looked.

Specifications :

Power Rating      :      1600 W / 3200 W / 6400 W Frequency Range      :      27 Hz - 220 Hz 
(-10 dB)
Dimensions
(H x W x D)      :      610 mm x 1067 mm x 838 mm
(24 in x 42 in x 33 in)

Frequency Response      :      33 Hz - 220 kHz
(±3 dB)

Net Weight      :      76 kg (166.5 lb.)

:twisted:

[Pete Sams]

The reason for the odd spec is that engineers want to know the highest and lowest point of sensitivity the cab was measured at even if those frequencies won't be used. Many single and dual 18's get more efficient above 100hz and systems need to be designed to circumvent issues with that range. It isn't a misprint, but it doesn't help the average user.

Back in the horn-loaded days it was more common to see midrange boxes drop below 160 or higher and subs had to be able to cover that range. And if you're using a hornloaded mid that doesn't do well below 200 then this info could be usefull.

[Jean-Pierre Coetzee]

The reason for the odd spec is that engineers want to know the highest and lowest point of sensitivity the cab was measured at even if those frequencies won't be used. Many single and dual 18's get more efficient above 100hz and systems need to be designed to circumvent issues with that range. It isn't a misprint, but it doesn't help the average user.

Back in the horn-loaded days it was more common to see midrange boxes drop below 160 or higher and subs had to be able to cover that range. And if you're using a hornloaded mid that doesn't do well below 200 then this info could be usefull.

Just to emphasise. 220kHz is 220000Hz. Ummm... Last I check +3dB means that the sub 'should' be able to reproduce that frequency at close to its sensitivity rating at least...

[Pete Sams]

220 kHz! I get it. where it bugs dogs and birds n shit, ok.

[Randall Hyde]

http://www.jblpro.com/catalog/general/Product.aspx?PId=118&MId=3

Frequency response : 33Hz - 220 kHz

I think not.

JBL = Just Big Liars?

:-)

Seriously, I own a bunch of JBL (and Harmon) equipment, but I couldn't resist.

[ProSoundWeb Community]