793356

JBL Project K2 S9900 Manual

14
Zoom out
Zoom in
Previous page
1/42
Next page
14
High-Current and
Fatigue-Resistant
Pigtail Leads
Extruded-Aluminum
Spider Spacer
Dual Inverted
Nomex Spiders
Cone Body:
Special Paper-
Pulp Composite
VGC – Vented Gap
Cooling Channels
Voice Coil:
Aluminum Ribbon Wire on
High-Temp Fiberglass Former
Dust Dome:
Paper-Pulp Composite
EPDM-Foamed
Rubber Surround
Glass-Filled ABS
Terminal Base
5-Way Gold-Plated
Terminal Posts
Conductive Ring:
Extruded 6063
Aluminum
Magnet:
Alnico 5DG
Pot:
SAE-1008
Polepiece:
SAE-1008 Steel
Gap Sleeve:
SAE-1008 Steel
Rear Cover:
Cast 380 Aluminum
Copper and Steel
Gap Ring Laminations
Frame:
Cast 380 Aluminum
Figure 3. 1500AL-1 section view.
The 1500AL-1 low-frequency driver is a 15-inch (380mm)-diameter device with
a 4-inch (100mm) voice coil completely immersed in a radial field generated by
an alnico 5DG magnet. Alnico was chosen because of its stable operating point.
This material is insensitive to temperature changes and back EMF from the coil.
JBL engineers have overcome the tendency of alnico to demagnetize with high
drive, by utilizing a massive shorting ring at the base of the motor assembly. The
top plate is constructed of alternating copper-steel laminations. The presence of
the copper rings linearizes the magnetic properties of the gap to all but eliminate
eddy current distortion.
The outer suspension is made of EPDM-foamed rubber, which has the longevity
and frequency response characteristics of traditional rubber surrounds, but with
a low density very close to that of foam surrounds. Low-loss EPDM material
was chosen so that the transient detail of musical signals could be preserved.
Dual inverted Nomex® spiders are employed for the cancellation of even-order
distortion components. All suspension elements are tailored for maximum
mechanical displacement linearity.
The cone consists of a special layered paper-pulp matrix with proprietary
Aquaplas damping, which offers more pistonic behavior throughout the
woofer’s operating bandwidth, and controlled cone breakup beyond it.
… 14 …


Need help? Post your question in this forum.

Forumrules


Report abuse

Libble takes abuse of its services very seriously. We're committed to dealing with such abuse according to the laws in your country of residence. When you submit a report, we'll investigate it and take the appropriate action. We'll get back to you only if we require additional details or have more information to share.

Product:

For example, Anti-Semitic content, racist content, or material that could result in a violent physical act.

For example, a credit card number, a personal identification number, or an unlisted home address. Note that email addresses and full names are not considered private information.

Forumrules

To achieve meaningful questions, we apply the following rules:

Register

Register getting emails for JBL Project K2 S9900 at:


You will receive an email to register for one or both of the options.


Get your user manual by e-mail

Enter your email address to receive the manual of JBL Project K2 S9900 in the language / languages: English, All languages as an attachment in your email.

The manual is 2.94 mb in size.

 

You will receive the manual in your email within minutes. If you have not received an email, then probably have entered the wrong email address or your mailbox is too full. In addition, it may be that your ISP may have a maximum size for emails to receive.

The manual is sent by email. Check your email

If you have not received an email with the manual within fifteen minutes, it may be that you have a entered a wrong email address or that your ISP has set a maximum size to receive email that is smaller than the size of the manual.

The email address you have provided is not correct.

Please check the email address and correct it.

Your question is posted on this page

Would you like to receive an email when new answers and questions are posted? Please enter your email address.



Info