going active with troels jenzen illu - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th August 2012, 08:46 AM   #1
oorva is offline oorva  Israel
diyAudio Member
 
Join Date: Oct 2007
Default going active with troels jenzen illu

hello all.

my name is Ronny.

i am interested in troels box design (well most of it), but i want different drivers.

the design Jenzen-Illuminator

drivers:

T - VIFA XT25TG30-04
M - SS 18W/8531G00
B - SS 26W/8861T00

so i want to go active.

i have my tube amp (jolida jd1000rc currently driving a pair of proac 2.5 clones), probably to drive the mid.

i also can get a 4 channel amp (from a friend).

i read somewhere that the SS 18W/8531 will do fine in a 7 liter sealed box.
so i might do that (or a bigger sealed box).
if i will make the mid cab smaller i might add height to the bass cab hence
a bit longer TL (i think the line now is 1/4 wave 40 HZ). will it result a slightly deeper bass?

now to some active crossovers options:

my budget is up to 500$.
mainly, was thinking about the miniDSP 4x10 Hd | miniDSP
will it do all that a passive xo does (L pad, notch filter, baffle step etc)?
will i be able to avoid a pre amp (my sources are a pc and a cary cd player)
i like the up to 8 order LR option.

maybe ashly 4001?

maybe a pc based xover?

your opinions will be valued.

THX
  Reply With Quote
Old 14th August 2012, 09:51 AM   #2
diyAudio Member
 
picowallspeaker's Avatar
 
Join Date: Apr 2007
Nice project and nice drivers , the Illuminator design .
The cost of the coil also surpasses some nice drivers ,as also
the caps needed for Hp'ing the mid .
I guess you should do some research ( on the Net ) to see
which paths are often taken and how acoustic energy is distributed
in the audio spectrum .
The passive crossover does this easily , in accordance to driver's
construction and taking into account all the different issues occurring when more than a speaker is a sound source .

I guess that a 10/20 W amp would suit for the tweeter
probably needing an extra cap between the amp and the tw

Since that the construction of the project seems modular , you can start
from the mid chamber and test it with your amplifier .

Or you can start with the big box ....
  Reply With Quote
Old 15th August 2012, 08:39 AM   #3
oorva is offline oorva  Israel
diyAudio Member
 
Join Date: Oct 2007
Default follow up question

lets say i stay passive and just replace the illu mid with 18W/8531G00
will the xover for the mid work with some value changes (if yes what do i need to tweak)?
Attached Images
File Type: png Jenzen-Illuminator_6600 XOVER.png (17.5 KB, 487 views)
  Reply With Quote
Old 15th August 2012, 12:29 PM   #4
DrDyna is offline DrDyna  United States
diyAudio Member
 
DrDyna's Avatar
 
Join Date: May 2007
Blog Entries: 3
crossovers
__________________
Thou shalt not commit logical fallacies.
https://yourlogicalfallacyis.com/
  Reply With Quote
Old 15th August 2012, 02:15 PM   #5
diyAudio Member
 
picowallspeaker's Avatar
 
Join Date: Apr 2007
Ah ah , Oorva wanted to change the components ,
I didn't read that
Well
Going active is the best way to overcome the studies needed
to make a multi way speaker sound good .
Just make the driver work in its preferred band and you're done .

Then position the drivers in the room .

But going active has some issues too . It needs an electronic crossover
and more than a stereo amplifier , so some skills are needed too
to set the whole system perfectly .

A published project ( I hope ) has it all done : driver choice , cabinet
design and the CPU , the crossover .

I would love to see a SS 18W/8531G00 in my room , I don't even think it would need a woofer below it .

Ronny , if you're interested in TL designs , I think you are in the right place .
Low bass extension and SPL might be a plus if the cabinet is well done .

Looking at Troel's design , I really don't like the way the drivers are 'suffocated' in the first part of the line , but they might work

But , remember that the crossover circuit is the heart of any loudspeaker
system , designed specifically for it and nothing else .

Last edited by picowallspeaker; 15th August 2012 at 02:20 PM.
  Reply With Quote
Old 23rd August 2012, 10:18 AM   #6
oorva is offline oorva  Israel
diyAudio Member
 
Join Date: Oct 2007
Default thanks

this are my final drivers

T - SS 6600
M - SS 18W/8531G00
B - SS 26W/8861T00

the box design would be as in my first message.

now if anyone has some ideas for active XO.
  Reply With Quote
Old 23rd August 2012, 06:51 PM   #7
diyAudio Member
 
jerome69's Avatar
 
Join Date: Feb 2008
Location: Lyon
Jensen-1071 instead ? and you can go to full passive.

Active XO with a geometry like the Jensen illuminator doesn't have a lot of sense...
  Reply With Quote
Old 23rd August 2012, 07:58 PM   #8
diyAudio Member
 
Join Date: Jun 2011
Here is my build with the exact same drivers as yours.

My Scan-Speak 3way Tower (Avalon Isis alike)

They're working in an active setup with xo at 270hz lr12 and 1700hz lr24

They sound like a charm just missing the gloss finish
  Reply With Quote
Old 8th September 2012, 06:20 AM   #9
oorva is offline oorva  Israel
diyAudio Member
 
Join Date: Oct 2007
Default nice nice work

Quote:
Originally Posted by PandazYa View Post
Here is my build with the exact same drivers as yours.

My Scan-Speak 3way Tower (Avalon Isis alike)

They're working in an active setup with xo at 270hz lr12 and 1700hz lr24

They sound like a charm just missing the gloss finish
what active xo are you using?

where can i buy damping materials (especially the felt)?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Jenzen CA Mcgilvrey007 Multi-Way 4 18th June 2012 02:20 PM
How to make my Jenzen looks good andy2 Multi-Way 2 25th March 2012 09:42 PM
Troels CNO25 DanSki Multi-Way 19 5th May 2011 10:59 PM
Troels big 3-way tamule Multi-Way 11 5th April 2011 10:58 AM
TJL3W by Troels miamiphoto Multi-Way 1 26th June 2010 05:39 PM


New To Site? Need Help?

All times are GMT. The time now is 07:18 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2