Speakerplans.com Homepage
Forum Home Forum Home > Plans > Punisher and X-tro
  New Posts New Posts RSS Feed - X-tro
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

X-tro

 Post Reply Post Reply Page  123 11>
Author
Message
Rog View Drop Down
New Member
New Member

Rogers Archive Posts

Joined: 23 March 2010
Status: Offline
Points: 2166
Post Options Post Options   Thanks (0) Thanks(0)   Quote Rog Quote  Post ReplyReply Direct Link To This Post Topic: X-tro
    Posted: 21 March 2005 at 5:55am

Hello guys,

After some adjustments of the first prototype I am proud to present you the X-tro hornloaded top cabinet:

http://www.iven.nl/bouwproces/bouwprocesxtroII.htm

The next few week the second generation prototypes will be build. The 9 th of april there is a party for 500 people. We will use 1x X-tro a side together with 3x Punisher a side. Amps will be QSC PL and Crest.

X-tro drivers are 2x 18Sound 15ND930, 1x B&C 8PE21 and B&C DE-500 on Beyma TD245 horn.

Best regards,

Walt

Back to Top
norty303 View Drop Down
Old Croc
Old Croc
Avatar

Joined: 18 August 2004
Location: Eastbourne
Status: Offline
Points: 8806
Post Options Post Options   Thanks (0) Thanks(0)   Quote norty303 Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 6:08am

Very nice 

Be interesting to see how they sound.  Whats the theory behind the curved horn paths, or is it just to allow a smaller external dimension?

My laser stuff: Frikkin Lasers
Back to Top
Contour View Drop Down
Young Croc
Young Croc


Joined: 03 March 2004
Status: Offline
Points: 620
Post Options Post Options   Thanks (0) Thanks(0)   Quote Contour Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 6:48am

The 'curved' horn path makes it possible to mount a 15" driver behind the mid section therfore saving space. External dimensions are small:

H31.5" x W20" x D30"

The second 15" gives the X-tro 3dB of extra power compared to normal designs which only use one 12" or 15" as mid/low unit. The first test showed the X-tro is capable of some serious high SPL levels.

Best regards,

Walt

 

Back to Top
Timber_MG View Drop Down
Registered User
Registered User
Avatar

Joined: 27 March 2004
Location: South Africa
Status: Offline
Points: 1454
Post Options Post Options   Thanks (0) Thanks(0)   Quote Timber_MG Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 8:02am
Looks interresting. I take it design is for only one unit a side. What components did you guys use?
Back to Top
Contour View Drop Down
Young Croc
Young Croc


Joined: 03 March 2004
Status: Offline
Points: 620
Post Options Post Options   Thanks (0) Thanks(0)   Quote Contour Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 8:12am

Hello Timber,

We use 18Sound 15ND930, B&C 8cx21 and B&C DE-500 on a Beyma horn.

X-tro should work with one a side (perhaps some small infill cabs)

Best regards,

Walt

Back to Top
Timber_MG View Drop Down
Registered User
Registered User
Avatar

Joined: 27 March 2004
Location: South Africa
Status: Offline
Points: 1454
Post Options Post Options   Thanks (0) Thanks(0)   Quote Timber_MG Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 8:41am
Ahhh, too busy viewing the speaker pR0n to realize Walt actually posted the components....

Anyways, seems like an idea with a bit of potential. Three/four punishers underneath might make for some alarm and be fairly compact.
Back to Top
Contour View Drop Down
Young Croc
Young Croc


Joined: 03 March 2004
Status: Offline
Points: 620
Post Options Post Options   Thanks (0) Thanks(0)   Quote Contour Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 8:51am

At our submeeting we build a mono stack of 4x Punisher driven by Crest CA12 and QSC PL4.0 this was a very brutal system!

A system consisting of 3x punisher/1x X-tro a side would be even better I suppose

But 2x Punisher/1x X-tro also sounded very nice. In that case 1500W for each punisher is recommened.

Best regards,

Walt



Edited by Contour
Back to Top
freddyi View Drop Down
Registered User
Registered User


Joined: 22 September 2004
Status: Offline
Points: 936
Post Options Post Options   Thanks (0) Thanks(0)   Quote freddyi Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 10:26am
Hi  Contour --  where are good crossover points for X-tro to subs?

whats nominal sensitivity of  midbass corrected for 1W? 

what does wedge throat section on 15ND930  accomplsh?   (sorry for poor English - am still American)

looks like nice party coming up

Best wishes,
Freddy
Back to Top
Contour View Drop Down
Young Croc
Young Croc


Joined: 03 March 2004
Status: Offline
Points: 620
Post Options Post Options   Thanks (0) Thanks(0)   Quote Contour Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 11:05am

Hello Freddy,

According to the AJ simulations the nominal 15" section efficiency for 1W input is about 100dB at one meter. This is the free-air response! You might want to add some dB's for halfspace efficiency :-)

Response should be about +/- 2dB from 80hz to 400hz. RTA of the first prototype showed a flat response. We would like to cross to subs at about 90-100hz. We will have to try what sounds best. Punisher has a rising response so it might be wise to create a little gap to compense for this for example subs to 90hz and X-tro from 100hz.

The wedge section gives a better kickbass than the old 15" section from the first prototype.

Best regards,

Walt

 

Back to Top
freddyi View Drop Down
Registered User
Registered User


Joined: 22 September 2004
Status: Offline
Points: 936
Post Options Post Options   Thanks (0) Thanks(0)   Quote freddyi Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 1:22pm
HI Walt

re: wedge throat seiction -  assume kickbass effect is something which won't show up in response curve.   old Karlson box rear shelf choke someimes exerts siimilar effect with only a slight shift on Z-curve.

don't yet see your 15" X-tro driver in US but must be coming. 

X-tro is tiny     (wheres the piezos????)

21lw1400 is available - probably too much mass @300g (+cost) for a fun Karlson (?) - would look cool.

are you going to video-record the next shootout?  are there dynamic tests such as recording a speaker then analyzing peak dynamic/spectrum with wav editor? (or view on fast RTA)

Best,
Freddy


Edited by freddyi
Back to Top
Hugo Biermann View Drop Down
Young Croc
Young Croc
Avatar

Joined: 05 February 2005
Location: South Africa
Status: Offline
Points: 809
Post Options Post Options   Thanks (0) Thanks(0)   Quote Hugo Biermann Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 1:22pm
& da plans?
Back to Top
Timber_MG View Drop Down
Registered User
Registered User
Avatar

Joined: 27 March 2004
Location: South Africa
Status: Offline
Points: 1454
Post Options Post Options   Thanks (0) Thanks(0)   Quote Timber_MG Quote  Post ReplyReply Direct Link To This Post Posted: 21 March 2005 at 2:06pm
I recon keep an eye out on speakerstore.nl (ne Walt?). 
Back to Top
 Post Reply Post Reply Page  123 11>

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 0.141 seconds.