Speakerplans.com Homepage
Forum Home Forum Home > Plans > MT122
  New Posts New Posts RSS Feed - Thoughts on this driver?
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

Thoughts on this driver?

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

Joined: 23 March 2008
Location: Portugal
Status: Offline
Points: 188
Post Options Post Options   Thanks (0) Thanks(0)   Quote vmh Quote  Post ReplyReply Direct Link To This Post Topic: Thoughts on this driver?
    Posted: 22 August 2015 at 12:25am
Not saying what the driver is but here are the specs. Any thoughts? ;-)

FS - 37.9
QES - 0.335
QTS - 0.330
BL - 21.879
EBP - 113.13
LE - 2.29

BL and QTS look good but EBP and LE are shite.
Whats most important for the MT?

It's not how big it is, it's what you do with it!
Back to Top
all bass View Drop Down
Old Croc
Old Croc
Avatar

Joined: 11 October 2012
Location: the Netherlands
Status: Offline
Points: 1855
Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 23 August 2015 at 11:51pm
Bass driver!
https://www.instagram.com/my_modular_journey/
Back to Top
_djk_ View Drop Down
Old Croc
Old Croc


Joined: 23 November 2004
Location: United States
Status: Offline
Points: 6002
Post Options Post Options   Thanks (1) Thanks(1)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 24 August 2015 at 6:11am
2x the EBP is the mass corner, or 226hz in this case.
 
This driver will have trouble pushing air into the throat of a horn much above its mass corner (as any driver will).
 
This can be seen if you load it into Hornresp.
 
 The EBP on the 12PE32 is 268 Hz, so the mass corner is 536hz. With an optimized thoat it can reach 1Khz and only be 5dB down (on a constant coverage horn).
 
 
Plans and cut-list online.


Edited by _djk_ - 24 August 2015 at 6:18am
djk
Back to Top
vmh View Drop Down
Registered User
Registered User
Avatar

Joined: 23 March 2008
Location: Portugal
Status: Offline
Points: 188
Post Options Post Options   Thanks (0) Thanks(0)   Quote vmh Quote  Post ReplyReply Direct Link To This Post Posted: 25 August 2015 at 7:45pm
Thanks for that..
I've been after the input paramaters for the MT so i can make my own comparisons so this is a great help.
Actually i use XT8 horns over a pair of TDA version MTs at the moment so these don't look so bad as i can cross them over down to 350Hz (ish).
I built them a few years ago and not been able to afford to load the MTs yet. These are the specs for The Box drivers which, not ideal maybe, are only 50 euros each. :-)
It's not how big it is, it's what you do with it!
Back to Top
all bass View Drop Down
Old Croc
Old Croc
Avatar

Joined: 11 October 2012
Location: the Netherlands
Status: Offline
Points: 1855
Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 25 August 2015 at 10:59pm
Originally posted by vmh vmh wrote:

These are the specs for The Box drivers which, not ideal maybe, are only 50 euros each. :-)

12/280-8A measured parameters

Here you can find the actual measured TS for this driver.
https://www.instagram.com/my_modular_journey/
Back to Top
vmh View Drop Down
Registered User
Registered User
Avatar

Joined: 23 March 2008
Location: Portugal
Status: Offline
Points: 188
Post Options Post Options   Thanks (0) Thanks(0)   Quote vmh Quote  Post ReplyReply Direct Link To This Post Posted: 26 August 2015 at 10:15pm
Ohh. that's even worse.
It's the 12-280/8w i am looking at though.

It's not how big it is, it's what you do with it!
Back to Top
all bass View Drop Down
Old Croc
Old Croc
Avatar

Joined: 11 October 2012
Location: the Netherlands
Status: Offline
Points: 1855
Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 27 August 2015 at 7:58pm
Originally posted by vmh vmh wrote:

Ohh. that's even worse.
It's the 12-280/8w i am looking at though.


The "W" version is a very heavy coned 4" VC subbass driver. It will sound absolutely horrible in a MT122, or any mid/top at all!!
https://www.instagram.com/my_modular_journey/
Back to Top
Seehnav View Drop Down
Registered User
Registered User
Avatar

Joined: 01 May 2014
Status: Offline
Points: 67
Post Options Post Options   Thanks (0) Thanks(0)   Quote Seehnav Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2015 at 2:48pm
Back to Top
vmh View Drop Down
Registered User
Registered User
Avatar

Joined: 23 March 2008
Location: Portugal
Status: Offline
Points: 188
Post Options Post Options   Thanks (0) Thanks(0)   Quote vmh Quote  Post ReplyReply Direct Link To This Post Posted: 28 August 2015 at 11:59pm
Back to the hunt then.
Don't know why i ask. I always know the answer but i live in hope. Smile
It's not how big it is, it's what you do with it!
Back to Top
vmh View Drop Down
Registered User
Registered User
Avatar

Joined: 23 March 2008
Location: Portugal
Status: Offline
Points: 188
Post Options Post Options   Thanks (0) Thanks(0)   Quote vmh Quote  Post ReplyReply Direct Link To This Post Posted: 19 September 2015 at 11:37pm
But if they are only playing between around 150 to 300 or 400 hz do i need such a high EBP?
It's not how big it is, it's what you do with it!
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.06
Copyright ©2001-2023 Web Wiz Ltd.

This page was generated in 0.078 seconds.