Speakerplans.com Homepage
Forum Home Forum Home > General > Electro Frying Forum
  New Posts New Posts RSS Feed - PD 1550 Impedance Graph
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

PD 1550 Impedance Graph

 Post Reply Post Reply
Author
Message
shaun1264 View Drop Down
Registered User
Registered User
Avatar

Joined: 06 September 2013
Location: Surrey
Status: Offline
Points: 198
Post Options Post Options   Thanks (0) Thanks(0)   Quote shaun1264 Quote  Post ReplyReply Direct Link To This Post Topic: PD 1550 Impedance Graph
    Posted: 12 January 2022 at 11:09am

Ive got two of the 16ohm versions of these working nicely in a in 75L bass reflex enclosure.  Looking at the impedance graph of these drivers I notice how steep and high the impedance goes (on the 8ohn) version compared to a lot of other drivers like the JBL 2226.  Any reason why this large peak over 250ohms (in a 107L vented enclosure according to the spec sheet) is so high?
Back to Top
smitske96 View Drop Down
Young Croc
Young Croc


Joined: 16 February 2016
Location: The Netherlands
Status: Offline
Points: 864
Post Options Post Options   Thanks (0) Thanks(0)   Quote smitske96 Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2022 at 11:26am
I think its a mistake in the specsheet, impedance graph is probably free air.
Back to Top
shaun1264 View Drop Down
Registered User
Registered User
Avatar

Joined: 06 September 2013
Location: Surrey
Status: Offline
Points: 198
Post Options Post Options   Thanks (0) Thanks(0)   Quote shaun1264 Quote  Post ReplyReply Direct Link To This Post Posted: 12 January 2022 at 12:26pm
On the 'new' version of this driver they have the same Thiele Small Parameters and graphs but this time measured in a 975 litre box!

So it seems rather confusing and misleading or clear glaring errors in the measuring or marketing department! But that is still a huge peak on impedance even it's an free air
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.05
Copyright ©2001-2022 Web Wiz Ltd.

This page was generated in 0.063 seconds.