Speakerplans.com Homepage
Forum Home Forum Home > Plans > MT122
  New Posts New Posts RSS Feed - 2x Celestion 1746 vs 1x B&C De85
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

2x Celestion 1746 vs 1x B&C De85

 Post Reply Post Reply Page  12>
Author
Message
levyte357 View Drop Down
The 10,000 Points Club
The 10,000 Points Club


Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Topic: 2x Celestion 1746 vs 1x B&C De85
    Posted: 23 November 2009 at 1:56pm

Have a few MT121s to load, and for high end there are 2x possibilities for each cab,

a)2x Celestion 1746 (screw in version of cdx 1745)
b)1x B&C De85

Priorties are power handling from 1.8khz upwards, top end upto 16khz, and acceptable replacement diaphragm cost. The 2x 1746s are cheaper than 1x B&C DE85.

Horns are Alum B&C 2", so horn snapping isn't an issue.

Personally think the 2x 1746s would edge the DE85, with the only question mark being power handling @ 1.8khz, as the manufacturer spec states min xover approx 2.2k.


Edited by levyte357 - 23 November 2009 at 2:01pm
"Who am I? I'm the guy who does his job.. You must be the other guy".
Back to Top
darkmatter View Drop Down
Old Croc
Old Croc


Joined: 26 February 2005
Location: LDN
Status: Offline
Points: 2419
Post Options Post Options   Thanks (0) Thanks(0)   Quote darkmatter Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2009 at 2:01pm
How would you avoid destructive interference between the 2 celestion 1"? Are you going to use an adapter and fit them to the 2" throat horns you already have?
 
My gut feeling is that the de85 would be better but I've got no idea whether I'm right!


Edited by darkmatter - 23 November 2009 at 2:02pm
Back to Top
levyte357 View Drop Down
The 10,000 Points Club
The 10,000 Points Club


Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2009 at 2:54pm
Originally posted by darkmatter darkmatter wrote:

How would you avoid destructive interference between the 2 celestion 1"? Are you going to use an adapter and fit them to the 2" throat horns you already have?
 
My gut feeling is that the de85 would be better but I've got no idea whether I'm right!


Would use 2x1"=>2" adaptor, similiar to older Turbo cabs.

Have heard the DE85 on the ME60 horn, and had decided on this combo months ago.

However can get the celestions at competitive price.
"Who am I? I'm the guy who does his job.. You must be the other guy".
Back to Top
darkmatter View Drop Down
Old Croc
Old Croc


Joined: 26 February 2005
Location: LDN
Status: Offline
Points: 2419
Post Options Post Options   Thanks (0) Thanks(0)   Quote darkmatter Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2009 at 3:22pm
Seen, my guess is it very much depends on how the CDX1746 behave with that specific adapter/horn combo. Seeing as the 12" will be beaming above 1.2k it seems like you'd want a driver that performs well from there upwards. Unless the celestions benefit lots from the additional loading offered by the decent sized horn, I can't see them being happy around 1.4k...
 
Also, you'd be forced to use steep roll off in the HPF for the CDs if you went with celestions, meaning potentially audible mismatch in dispersion around x-over point.
 
It seems to me that the benefit of using a 1" driver (HF extension) would be lost when using a throat adapter. Also from what I've read any imperfections in the driver/adapter/horn transition can have quite a large effect on response.
 
I'd go with 2" personally but I haven't heard the DE85 and I've only heard CDX1745 on standard horn.
Back to Top
levyte357 View Drop Down
The 10,000 Points Club
The 10,000 Points Club


Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 23 November 2009 at 3:49pm
Originally posted by darkmatter darkmatter wrote:

Seen, my guess is it very much depends on how the CDX1746 behave with that specific adapter/horn combo. Seeing as the 12" will be beaming above 1.2k it seems like you'd want a driver that performs well from there upwards. Unless the celestions benefit lots from the additional loading offered by the decent sized horn, I can't see them being happy around 1.4k...
 
Also, you'd be forced to use steep roll off in the HPF for the CDs if you went with celestions, meaning potentially audible mismatch in dispersion around x-over point.
 
It seems to me that the benefit of using a 1" driver (HF extension) would be lost when using a throat adapter. Also from what I've read any imperfections in the driver/adapter/horn transition can have quite a large effect on response.
 
I'd go with 2" personally but I haven't heard the DE85 and I've only heard CDX1745 on standard horn.


Can't really argue with the above "likely 1745+adaptor issues"...  Ouch

To be honest, in a test, I've heard 1x DE85+ME60 horn, keep up with 2x PD186 kick bins, and 2x PD186 subs. Shocked



"Who am I? I'm the guy who does his job.. You must be the other guy".
Back to Top
markie View Drop Down
Old Croc
Old Croc


Joined: 31 October 2005
Location: Sunny Liskeard.
Status: Offline
Points: 4568
Post Options Post Options   Thanks (0) Thanks(0)   Quote markie Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 3:25pm
By the time you've paid for a throat adaptor, 2 x 1746s will cost the same as a DE85.
If it's got wheels or tits it's gonna cost a fortune
Back to Top
ceharden View Drop Down
The 10,000 Points Club
The 10,000 Points Club
Avatar

Joined: 05 June 2005
Location: Southampton
Status: Offline
Points: 11851
Post Options Post Options   Thanks (0) Thanks(0)   Quote ceharden Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 9:52pm
Use the right tool for the job and go DE85.
Back to Top
levyte357 View Drop Down
The 10,000 Points Club
The 10,000 Points Club


Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 10:54pm
Originally posted by markie markie wrote:

By the time you've paid for a throat adaptor, 2 x 1746s will cost the same as a DE85.



Nah mate, I could have had 6x 1746s  for ridiculous price.

Image of P.Audio PC80 2-way Adaptor
Largest image of P.Audio PC80 2-way Adaptor we have available
Click the image to go back to the description

P.Audio PC80 2-way Adaptor

Bolt two 1" screw-on drivers onto one 2" throat horn.

£24.59 inc VAT
(21.38 ex VAT)
"Who am I? I'm the guy who does his job.. You must be the other guy".
Back to Top
levyte357 View Drop Down
The 10,000 Points Club
The 10,000 Points Club


Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 24 November 2009 at 10:55pm
Originally posted by ceharden ceharden wrote:

Use the right tool for the job and go DE85.


Yes.. And I did.Embarrassed
"Who am I? I'm the guy who does his job.. You must be the other guy".
Back to Top
Marvin View Drop Down
Young Croc
Young Croc


Joined: 28 December 2007
Location: London UK
Status: Offline
Points: 1029
Post Options Post Options   Thanks (0) Thanks(0)   Quote Marvin Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2009 at 9:33pm
You knew the answer to this thread before but guess you needed re-assuring.
Back to Top
levyte357 View Drop Down
The 10,000 Points Club
The 10,000 Points Club


Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743
Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357 Quote  Post ReplyReply Direct Link To This Post Posted: 25 November 2009 at 9:43pm
Originally posted by Marvin Marvin wrote:

You knew the answer to this thread before but guess you needed re-assuring.


When money is a factor, all alternatives need examination... LOL

EDIT:Also, can  I collect 2x more horns from same place !?


Edited by levyte357 - 25 November 2009 at 9:45pm
"Who am I? I'm the guy who does his job.. You must be the other guy".
Back to Top
Marvin View Drop Down
Young Croc
Young Croc


Joined: 28 December 2007
Location: London UK
Status: Offline
Points: 1029
Post Options Post Options   Thanks (0) Thanks(0)   Quote Marvin Quote  Post ReplyReply Direct Link To This Post Posted: 26 November 2009 at 1:08pm
yes you can but i will need to contact person first to make arrangements
Back to Top
 Post Reply Post Reply Page  12>

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.08
Copyright ©2001-2026 Web Wiz Ltd.