Speakerplans.com Homepage
Forum Home Forum Home > General > General Forum
  New Posts New Posts RSS Feed - tham 15 and 18 used together: phase problems?
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

tham 15 and 18 used together: phase problems?
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
Angelow View Drop Down
Registered User
Registered User
Avatar

Joined: 17 March 2010
Location: italy
Status: Offline
Points: 199 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Angelow Quote  Post ReplyReply Direct Link To This Post Topic: tham 15 and 18 used together: phase problems?
    Posted: 23 March 2019 at 12:59pm
Having purchased 2 other res2 used and in anticipation of taking 2 more, I wanted to build 4 new cabinet tham shortly.
currently I use a satellite on two or 3 "tham 15mo" (version with inclined panel to increase the mouth) com in figures 1 and 2, and since I have 4 faital 18hp1010 I would have thought of tham 18, but they can cohabit with tham 15 and above all Is it a good cone for that project?
I should cut both the 15 and the 18 at the same frequency, I think 30-90 / 100hz is right.

Another question, from the tham 18 I read that there is the old version and the new one, but what changes?


Why do I use the tham instead of the pass-band slide sub? They are small and easily transportable and then the tham 15 used in a few units, compared to f118 in my opinion it has more hit on the pure bass.
Obviously, if you put many f118 neighbors the situation changes, but it is not very scalable as a solution!

thanks!


Edited by Angelow - 23 March 2019 at 1:01pm
Back to Top
mstep77 View Drop Down
Registered User
Registered User


Joined: 19 July 2006
Status: Offline
Points: 457 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mstep77 Quote  Post ReplyReply Direct Link To This Post Posted: 23 March 2019 at 1:45pm
What kind of music are you playing?
Back to Top
Angelow View Drop Down
Registered User
Registered User
Avatar

Joined: 17 March 2010
Location: italy
Status: Offline
Points: 199 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Angelow Quote  Post ReplyReply Direct Link To This Post Posted: 23 March 2019 at 3:12pm
in 90% of cases, electronic music, dance trance tekno
Back to Top
JonB67 View Drop Down
Young Croc
Young Croc


Joined: 22 April 2016
Location: UK
Status: Offline
Points: 1376 		Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB67 Quote  Post ReplyReply Direct Link To This Post Posted: 23 March 2019 at 7:44pm
You're running two different subs tham 15 and tham 18 in the same passband? Have i read that right?
Back to Top
Angelow View Drop Down
Registered User
Registered User
Avatar

Joined: 17 March 2010
Location: italy
Status: Offline
Points: 199 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Angelow Quote  Post ReplyReply Direct Link To This Post Posted: 24 March 2019 at 2:18pm
hi, i currently only have 6 tham 15mo, but since i have 4 unused 18 "woofers i would like to complete the system without buying new woofers 15, and i was wondering if i could have problems
Back to Top
Angelow View Drop Down
Registered User
Registered User
Avatar

Joined: 17 March 2010
Location: italy
Status: Offline
Points: 199 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Angelow Quote  Post ReplyReply Direct Link To This Post Posted: 26 March 2019 at 12:01am
:)   up :)   up :)   up
Back to Top
mstep77 View Drop Down
Registered User
Registered User


Joined: 19 July 2006
Status: Offline
Points: 457 		Post Options Post Options   Thanks (0) Thanks(0)   Quote mstep77 Quote  Post ReplyReply Direct Link To This Post Posted: 26 March 2019 at 5:03pm
You don't want to be running tham15 and than 18 in the same pass band. That is a recipe for disaster. If you want it louder sell the 18 and build more tham15. If you want it lower then try some double reflex cabs for the 18s and have a separate pass band for them . Maybe 35-65 on the 18 and 65-120 hz on the tham15. Just a rough guess for a start point.
Back to Top
toastyghost View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 09 January 2007
Location: Manchester
Status: Offline
Points: 10919 		Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 26 March 2019 at 5:44pm
Originally posted by mstep77 mstep77 wrote:

You don't want to be running tham15 and than 18 in the same pass band. That is a recipe for disaster. If you want it louder sell the 18 and build more tham15. If you want it lower then try some double reflex cabs for the 18s and have a separate pass band for them . Maybe 35-65 on the 18 and 65-120 hz on the tham15. Just a rough guess for a start point.


Not always the case, you can get a TH115 and a TH118 to have matching slopes within 30 degrees from 50Hz - 100Hz with some delay and a PEQ point. They'll have some issues from mid-30s to 50Hz but nothing too dramatic, just no summation at the worst point where the natural rolloff of the smaller box comes into play.

It's perfectly doable, with proper measurement and DSP approach. Which you'd need if you add an 18" reflex to the mix anyways, as well as having opposing group delay curves and a phase rotation to contend with where the port comes into play.
Back to Top
Angelow View Drop Down
Registered User
Registered User
Avatar

Joined: 17 March 2010
Location: italy
Status: Offline
Points: 199 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Angelow Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2019 at 11:57am
since I will use a different amplifier than the tham 15, I have a "ds 2.4" unused that I could use to filter the tham 18, as I could set it?
Back to Top
Jo bg View Drop Down
Young Croc
Young Croc


Joined: 08 March 2017
Status: Offline
Points: 552 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Jo bg Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2019 at 12:37pm
you need to measure them and get phase to match as close as possible, usually with allpass filters in dsp.
Back to Top
Xoc1 View Drop Down
Registered User
Registered User


Joined: 15 October 2012
Location: Devon UK
Status: Offline
Points: 397 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xoc1 Quote  Post ReplyReply Direct Link To This Post Posted: 27 March 2019 at 1:23pm
Originally posted by toastyghost toastyghost wrote:

Originally posted by mstep77 mstep77 wrote:

You don't want to be running tham15 and than 18 in the same pass band. That is a recipe for disaster. If you want it louder sell the 18 and build more tham15. If you want it lower then try some double reflex cabs for the 18s and have a separate pass band for them . Maybe 35-65 on the 18 and 65-120 hz on the tham15. Just a rough guess for a start point.


Not always the case, you can get a TH115 and a TH118 to have matching slopes within 30 degrees from 50Hz - 100Hz with some delay and a PEQ point. They'll have some issues from mid-30s to 50Hz but nothing too dramatic, just no summation at the worst point where the natural rolloff of the smaller box comes into play.

It's perfectly doable, with proper measurement and DSP approach. Which you'd need if you add an 18" reflex to the mix anyways, as well as having opposing group delay curves and a phase rotation to contend with where the port comes into play.

The TH115 and TH118 are both the same size and path. The TH118 being based on the TH115 with the bigger driver fitted on a modified baffle.
The Tham 15 and 18 are different size designs and trying to get them to work well together might be more difficult.
Back to Top
Angelow View Drop Down
Registered User
Registered User
Avatar

Joined: 17 March 2010
Location: italy
Status: Offline
Points: 199 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Angelow Quote  Post ReplyReply Direct Link To This Post Posted: 28 March 2019 at 8:08pm
and if instead I use them in reflex? always with the same cut, I have to increase the bass, the kick the r2 have it already!
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 0.188 seconds.