new Beyma 6.5" coaxial - 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 30th June 2009, 02:53 PM   #1
el`Ol is offline el`Ol  Germany
diyAudio Member
 
Join Date: May 2005
Location: Bavarian Forest
Default new Beyma 6.5" coaxial

Hello all!

There is a new small Beyma coaxial that aims more at wide frequency range than on high sensitivity and so is suitable for compact hifi solutions.
http://profesional.beyma.com/ingles/...X200Nd_tec.pdf
The 65 Hz Fs and the strong motor seemed to be ideal for a ML-pipe, so I did a simulation with an old MJK sheet. Cross-section over the whole length was 2xSd, length 132 cm (quarter wavelength of Fs), port dimensions didn´t seem so critical.
Looks like a true fullrange solution, and that with a high-WAF slim coloumn.
Opinions?
Attached Images
File Type: jpg beyma.jpg (27.8 KB, 1265 views)
  Reply With Quote
Old 30th June 2009, 03:17 PM   #2
diyAudio Member
 
Join Date: Aug 2006
Cool. Anyone in the US carrying these yet? On a related note, any other decent high-ish efficiency 6.5" coaxes available?
__________________
~Brandon
DriverVault Soma Sonus Old Driver Tests
  Reply With Quote
Old 30th June 2009, 03:37 PM   #3
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Interesting driver.
The off axis response looks superb, if the plot can be believed. Wonder how they crossed it to get that?

Not going to be cheap, one would think.....
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 30th June 2009, 04:21 PM   #4
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Oooooo

I've always thought that a coax should have a relatively long horn for the tweeter, to eliminate the (moving) cone loading the tweeter output.
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 30th June 2009, 04:46 PM   #5
diyAudio Member
 
Join Date: Dec 2005
Location: Sao Paulo
Send a message via MSN to -_nando-_ Send a message via Skype™ to -_nando-_
Quote:
Originally posted by panomaniac
Interesting driver.
The off axis response looks superb, if the plot can be believed. Wonder how they crossed it to get that?

Not going to be cheap, one would think.....
You can believe Beyma's plots... I've been working with Beyma units, and it's awesome.
  Reply With Quote
Old 30th June 2009, 05:52 PM   #6
diyAudio Member
 
Inductor's Avatar
 
Join Date: Feb 2006
Location: Cascais
On a side note also file this interesting one, on the same tecnologie (n/coax).

Beyma 6P200Nd
http://profesional.beyma.com/ingles/pdf/6P200Nd.pdf
Price 90.00 euro no/tax.

Price for BEYMA 6CX200Nd COAXIAL TRANSDUCER is about 148.00 euro.
  Reply With Quote
Old 30th June 2009, 07:25 PM   #7
Lindell is offline Lindell  Sweden
diyAudio Member
 
Join Date: Dec 2005
Location: Planet Earth
I've made a pair of prototypes:

Click the image to open in full size.

.

After x-over and eq and stuffed port
Click the image to open in full size.

.

Step resp
Click the image to open in full size.

.

on-off/axis
Click the image to open in full size.

.

Slopes
Click the image to open in full size.

.

Glorified Hi-Fi curve
Click the image to open in full size.


Retail price is 220 EURO.

Sound is excellent. Amazing low end respons. It's a bit tricky to get flat and smooth sounding. But Beyma's original curve's are pretty fair.

Highly recommended
  Reply With Quote
Old 30th June 2009, 07:34 PM   #8
badman is offline badman  United States
diyAudio Member
 
badman's Avatar
 
Join Date: Sep 2003
Location: Sunny Tustin, SoCal
Quote:
Originally posted by Lindell
I've made a pair of prototypes:



Retail price is 220 EURO.

Sound is excellent. Amazing low end respons. It's a bit tricky to get flat and smooth sounding. But Beyma's original curve's are pretty fair.

Highly recommended

I'd be more interested in seeing the curves without the EQ, and without a brickwall digital filter....
__________________
I write for www.enjoythemusic.com in the DIY section. You may find yourself getting a preview of a project in-progress. Be warned!
  Reply With Quote
Old 30th June 2009, 07:58 PM   #9
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Sweet!

I emailed Beyma to ask what they did inthe way of x-over to get such good results. Let's see if they answer.

What did yo do for your cross?
__________________
Take the Speaker Voltage Test!
  Reply With Quote
Old 30th June 2009, 08:03 PM   #10
Lindell is offline Lindell  Sweden
diyAudio Member
 
Join Date: Dec 2005
Location: Planet Earth
Quote:
Originally posted by badman



I'd be more interested in seeing the curves without the EQ, and without a brickwall digital filter....

Raw drivers at same gain

Click the image to open in full size.
  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
Beyma 8AG/N horn or "the Viech" Cyburgs Full Range 112 12th August 2012 01:57 PM
Flatter than flat. PHL 10" and Beyma 1,4" Lindell Multi-Way 24 18th May 2009 08:51 PM
BEYMA 15XA38Nd 15" Coaxial Driver SEIJI Multi-Way 0 5th June 2006 04:25 PM
suspending a small tweeter in front of woofer for "coaxial" effect? bikehorn Multi-Way 3 2nd January 2006 02:04 PM


New To Site? Need Help?

All times are GMT. The time now is 04:44 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright Š1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2