Go Back   Home > Forums > Loudspeakers > Full Range

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 17th April 2010, 11:44 PM   #481
CSS/XBL is offline CSS/XBL  Canada
diyAudio Member
 
Join Date: Oct 2003
Quote:
Originally Posted by Trapshooter View Post
I'm considering ordering a pair of CHR-70's from Meniscus Audio in the states; would you know if they are stocking 1st or 2nd generation drivers?

thanks
Hi,

At present there are only first generation CHR70s available in North America. The next build has just been completed and we're expecting inventory in about 3 weeks.

Bob
  Reply With Quote
Old 19th April 2010, 12:50 PM   #482
Henkjan is offline Henkjan  Netherlands
diyAudio Member
 
Henkjan's Avatar
 
Join Date: Jan 2006
Location: Berkel en Rodenrijs
Quote:
Originally Posted by Dr.EM View Post
....
Not sure how much space I'd have though; Henkjans design is interesting:

Mark Audio CHR-70 Application Thread

..... The hump in the response from using the CHR-70 in a smaller box is very minimal, is the capacitor really needed?
the capacitor does not only flatten the response, but also extends the bass, see the graph below (simulation done in LspCAD).
Attached Images
File Type: png vergelijk 2liter, 2literGHP, 4 literGHP.png (17.5 KB, 882 views)
  Reply With Quote
Old 23rd April 2010, 07:48 AM   #483
diyAudio Member
 
Join Date: Nov 2004
Location: UK, bristol
Just received my gold chr70s.
How do I confirm that they are 2010 version?
  Reply With Quote
Old 23rd April 2010, 07:55 AM   #484
diyAudio Member
 
Join Date: Jan 2008
2010's have M4 screws - I believe earlier models had no screws at all, and the mounting holes in the flange were for smaller screws.
  Reply With Quote
Old 23rd April 2010, 07:55 AM   #485
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
If they are gold & not copper then they are the Mk 2.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 23rd April 2010, 09:45 AM   #486
diyAudio Member
 
Join Date: Nov 2004
Location: UK, bristol
Quote:
Originally Posted by planet10 View Post
If they are gold & not copper then they are the Mk 2.
dave
Thanks. Not too difficult really!
  Reply With Quote
Old 23rd April 2010, 11:35 PM   #487
diyAudio Member
 
speakrsrfun's Avatar
 
Join Date: May 2005
Location: Toronto
OK people dMar-Kens are built just awaiting the chamfer on the fronts, I'll take a picture once the build is complete but before I finish them in veneer. These cabinets may be a tad large for the average dektop speaker if your into small, but to be honest they are not much larger than my 9L ported cabinets being used now anyway so I don't mind.... More to come....
__________________
What was that?... I can't hear you I have a line array filling my ears.
  Reply With Quote
Old 26th April 2010, 05:30 PM   #488
diyAudio Member
 
speakrsrfun's Avatar
 
Join Date: May 2005
Location: Toronto
Alright my dMar-Kens are sitting on my desk playing some Eva Cassidy. Soooo when I have a little spare time I'll do a review of my impressions and take a few pre veneer pictures for you. What I can tell you is that these little CHR-70's in this cabinet make some pretty impressive bottom end, much more than my 9L ported design does. They are quite a surprise, and friends who have heard them have asked me to turn the sub off so they can hear just the monitors.... hahaha, no sub in here boys LOL. So far I'm very impressed but the drivers in these need some breaking in yet so I'll do my review in a few days time permitting. Thanks for another great design Planet10 and Dave's crew, anyone thinking about purchasing plans for these don't hesitate they are a great design and much better than most everything I've heard in the 6 1/2" two way commercial arena so that says alot... More of a detailed review to follow.
__________________
What was that?... I can't hear you I have a line array filling my ears.
  Reply With Quote
Old 26th April 2010, 06:02 PM   #489
diyAudio Member
 
Join Date: Nov 2004
Location: UK, bristol
Quote:
Originally Posted by speakrsrfun View Post
Alright my dMar-Kens are sitting on my desk playing some Eva Cassidy. Soooo when I have a little spare time I'll do a review of my impressions and take a few pre veneer pictures for you. What I can tell you is that these little CHR-70's in this cabinet make some pretty impressive bottom end, much more than my 9L ported design does.
Where can I find details of your 9l ported?

I lose track, is approx volume of dMar-Ken restricted info?
  Reply With Quote
Old 26th April 2010, 07:08 PM   #490
chrisb is offline chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Quote:
Originally Posted by jimbo1968 View Post
Where can I find details of your 9l ported?

I lose track, is approx volume of dMar-Ken restricted info?

nope - for the CHR70, (dMar-Ken70) approx 9.2 liters, less volume of driver and bracing



Contact Dave for the drawings - the "majik" is in the details


Several years ago we built 2 or 3 (?) of the "Fostex factory" standard recommended BR designs for Fostex FE127E and FE167E, as well as a more conventional rectangular slot ported enclosure for the FE127 (Golden Ratio dimensions)

We heard quite convincingly that the combination of the high aspect ratio port slots, narrow and steeply chambered baffle, laminated wall panels, and driver brace contribute significantly to the superior performance of the "prime" design to standard ported/BR of the same net volume/tuning.

oh yes, Baltic Birch or superior grade high ply count plywoods are recommended
__________________
you don't really believe everything you think, do you?
community sites t-linespeakers.org, frugal-horn.com commercial site planet10-HiFi
  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
need great smd cap for audio application jsaggio Parts 1 11th September 2007 03:41 AM
CV4014 and 5650 - any audio application of these tubes? cm Tubes / Valves 0 18th January 2007 12:03 PM
Additional application for audio amps... ashok Everything Else 8 17th August 2005 08:20 AM


New To Site? Need Help?

All times are GMT. The time now is 06:20 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