Mark Audio CHR-70 Application Thread - Page 83 - diyAudio
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 3rd February 2013, 08:18 PM   #821
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Personally i don't like anything larger than 9 litres for a reflex for these. The CGR CHR-Ken will accomodate the river on any face.

Frugal-phile | Box Library / Mark Audio

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 3rd February 2013, 08:52 PM   #822
diyAudio Member
 
Bob Brines's Avatar
 
Join Date: Jan 2003
Location: Hot Spring Village AR
Dave,

Did you get an early start at a Super Bowl party?

Bob
  Reply With Quote
Old 3rd February 2013, 09:18 PM   #823
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Nope. Just a sticky spacebar.

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 3rd February 2013, 09:25 PM   #824
Squeak is offline Squeak  Denmark
diyAudio Member
 
Squeak's Avatar
 
Join Date: Jul 2007
Location: Frederiksberg
You boys might want to keep the intimate stuff to PMs? Sounds juicy though. ;-D
  Reply With Quote
Old 18th March 2013, 03:25 AM   #825
SirByrd is offline SirByrd  United States
diyAudio Member
 
SirByrd's Avatar
 
Join Date: Dec 2010
Location: Seattle, WA
Here is the final version.
Click the image to open in full size.
  Reply With Quote
Old 25th March 2013, 02:51 PM   #826
satx is offline satx  United States
diyAudio Member
 
Join Date: May 2012
Location: San Antonio, Texas
Default MA chr-70 Semi F.A.S.T question

Hey guys, I'm not sure if I should post this here or start a new thread.

I have a pair of Chr-70 gen3's that I have had in a 9L BR. I am thinking of combining them with a small woofer in what may be termed a FAST system. My goals for doing this are to maintain or improve upon the extension that i get from the chr-70 while adding a bit more weight or impact from the larger sd of the new driver. I also want to relieve the chr from producing bass to see what comes of that. I would like to try the chr in sealed or an open back tunnel on the enclosure.

I envision the total enclosure increasing to ≤15L with about 10L for woofer and 5L for chr. After much searching and consideration, the drivers I have in mind are The Madisound Speaker Store and Visaton W130S-8 5" Woofer with Treated Paper Cone 8 Ohm 292-564

They each show decent extension and roll off characteristics in 10-11L in WinIsd. (I am trying to get acquainted with all the FRD Consortium stuff, but there is a learning curve) The price is about where I want to be for this experiment and the numbers look right. If I'm correct the increased sensitivity should provide a built in 2.5db baffle step?

I plan on crossing them around 200hz first order. Large coil on woofer and large cap on CHR. Not sure if I should cross higher, say 500hz for that built-in baffle step to work. I don't want to run a separate amp for each speaker, I want to keep it more like a typical 2-way.

Am I on the right track for meeting my not to lofty goals? Way off? Out of my mind?
Any help would be appreciated.

Thanks,
Evan
  Reply With Quote
Old 25th March 2013, 05:49 PM   #827
diyAudio Member
 
Join Date: Mar 2012
Location: Oulu
Cool CHR-70 gen3 Boombox

Hi

I just wanted to show you my experimental project of using a pair of MarkAudio CHR-70's in a Boombox. This was my 3rd Boombox I have built.

Both elements are in 6,5 litres BR. I calculated vents with the winISD. The Box has a 5 Ah Lithium battery, but also possibility to use 230 VAC.

I think it sounds very good and the little T-amp ensures (2x12W), that the xmax of CHR's will not be exceeded.

(The heart blinks by the music.. )
Attached Images
File Type: jpg rattoradio small.jpg (234.6 KB, 507 views)
File Type: jpg kuva lootan rakenteesta.JPG (76.8 KB, 479 views)
File Type: jpg WinISD laskelmat rattoradio.JPG (100.9 KB, 468 views)
  Reply With Quote
Old 5th April 2013, 10:38 PM   #828
Henkjan is offline Henkjan  Netherlands
diyAudio Member
 
Henkjan's Avatar
 
Join Date: Jan 2006
Location: Berkel en Rodenrijs
I have updated my 2009 Black Beauty design for the CHR70A:
Black Beauty 2013 - a compact monitor with the CHR70A
  Reply With Quote
Old 15th March 2014, 07:23 AM   #829
Honkey is offline Honkey  Australia
diyAudio Member
 
Join Date: Feb 2011
Location: Melbourne
Hi All. I just finished these CHR-KEN's with the Enabled Planet_10 Hi-Fi CHR-70.2's . I've been breaking them in and they've been playing at low levels for around thirty hours. This project was my second speaker build and my first with the Mark Audio drivers. They sound great with my Helder Hi-Fi TA2020 amp! Guitars and vocals are excellent and I was pleasantly surprised with the quantity of clean bass these boxes produce. I haven't had a chance to mitre the corners so the ports are currently 198mm long in lieu of 191mm. I hope that doesn't adversely affect the box tuning. I routed out the ports into the 18mm marine ply outer side panels & also made the boxes slightly narrower and slight deeper than the Planet_10 design but maintained the nominated cross sectional area and height. I also installed a 12x18mm wide strip of plywood to the back of the outer side panels to allow for the wool felt lining attached to the rear plywood panel (see last photo). This helps to keep the slot before the ports clear. I hopefully will get around to installing the internal bracing but I'm soooo enjoying listening to the speakers I'm afraid I may never do it!

A BIG THANK YOU to Dave and Chris (Planet_10 Hi-Fi) for your efforts and for supplying the design (and anyone else who helped)!

Regards, Richard.
Attached Images
File Type: jpg IMAG0671.jpg (89.4 KB, 149 views)
File Type: jpg IMAG0672.jpg (76.8 KB, 62 views)
File Type: jpg IMAG0673.jpg (96.5 KB, 59 views)
File Type: jpg IMAG0674.jpg (87.8 KB, 58 views)
File Type: jpg IMAG0685.jpg (94.0 KB, 50 views)
  Reply With Quote
Old 15th March 2014, 07:54 AM   #830
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Richard,

Took you awhile

Longer vents will tune a bit lower.

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

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 04:32 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