Mark Audio CHR-70 Application Thread - Page 82

zman01 · 6th July 2012, 06:26 PM

sk971,

If you get the new drivers, then the new box will be better.

A very compact shallow design for the CHR-70 is the "Half Towers" - roughly 7.5" x 30" x 5.5" IIRC. Pretty nice for their size.

Noticed BPA has the previous gen Alp 7 on sale:

Markaudio Alpair 7 Gray - Lautsprecherbau von blue planet acoustic

This is probably the save rev driver as ChrisB's. Sorry, couldn't help suggesting, though this is a CHR application thread.

sk971 · 6th July 2012, 11:51 PM

Thanks for your thoughts gentlemen, a rethink is in order, most likely going to have a go with the old model Alpair 7s which are just in budget, with the Pensil 7 enclosures and hope that my kit can do them justice.
Cheers Simon

planet10 · 7th July 2012, 02:24 AM

Alpair 7 is no hardship

dave

zman01 · 7th July 2012, 06:27 AM

Quote:

Originally Posted by planet10

Alpair 7 is no hardship

dave

Simon, look forward to hearing from you when you start your build.

chrisb · 7th July 2012, 06:21 PM

Quote:

Originally Posted by planet10

Alpair 7 is no hardship

dave

Pensils with 7.2 have been my "daily driver" for probably a year now - as Dave says, no hardship

OOD34 · 30th December 2012, 05:31 PM

Hi all,

During Christmas, I made the Folded half Tower ML-TL (free design of planet10) for the CHR-70. I really like the sound.
As from drawing, see below (I made it unintended 3 cm less deep)

I was just curious, what would happen, if I added some extra deflectors inside. To my surprise, the bass get better, deeper and more solid. How it works, I do not know. Just to share.

Regards,

Olaf

PS. is my first project, so I am still on the learning, any feedback, remarks is welcome

KyleinCowichan · 30th December 2012, 06:31 PM

Well done! Perhaps Dave can comment on how those deflectors have had that effect. They definitely cut into the volume of the enclosure.

Kyle

SirByrd · 23rd January 2013, 08:33 AM

Built these prototypes, ~14 liters, tuned to ~47Hz with a 1"x1" port, F3 of 40 Hz.
Final versions will be out of bamboo plywood.

fastbike1 · 23rd January 2013, 01:00 PM

Would seem that the increased stuffing likely had the most effect, woudln't you say?

Quote:

Originally Posted by KyleinCowichan

Well done! Perhaps Dave can comment on how those deflectors have had that effect. They definitely cut into the volume of the enclosure.

Kyle

MosMike · 06:37 PM

Hello! I have ordered a pair of CHR-70.3 and I plan to use them as computer desktop speakers. As I see the majority of desktop speakers are deep and narrow boxes. But I need a wide shallow cabinet. I found this plan for a 12L BR cabinet: www.markaudio.com/Plans/item/download/60_20ae98d8b2b2e15c02ec6057d7439d2a How will it sound be compared to a traditional deep&narrow cabinet? Is it possible to improve the bass response by making it a 14L cabinet?

7th July 2012, 02:24 AM	#813
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 5	Alpair 7 is no hardship dave __________________ community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

3rd February 2013, 06:27 PM	#820
MosMike diyAudio Member Join Date: Jan 2013	Hello! I have ordered a pair of CHR-70.3 and I plan to use them as computer desktop speakers. As I see the majority of desktop speakers are deep and narrow boxes. But I need a wide shallow cabinet. I found this plan for a 12L BR cabinet: www.markaudio.com/Plans/item/download/60_20ae98d8b2b2e15c02ec6057d7439d2a How will it sound be compared to a traditional deep&narrow cabinet? Is it possible to improve the bass response by making it a 14L cabinet? Last edited by Mooly; 3rd February 2013 at 06:37 PM. Reason: Merged

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

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?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

6th July 2012, 06:26 PM	#811
zman01 diyAudio Member Join Date: Feb 2011 Location: Dhaka	sk971, If you get the new drivers, then the new box will be better. A very compact shallow design for the CHR-70 is the "Half Towers" - roughly 7.5" x 30" x 5.5" IIRC. Pretty nice for their size. Noticed BPA has the previous gen Alp 7 on sale: Markaudio Alpair 7 Gray - Lautsprecherbau von blue planet acoustic This is probably the save rev driver as ChrisB's. Sorry, couldn't help suggesting, though this is a CHR application thread.

6th July 2012, 11:51 PM	#812
sk971 diyAudio Member Join Date: Jul 2012	Thanks for your thoughts gentlemen, a rethink is in order, most likely going to have a go with the old model Alpair 7s which are just in budget, with the Pensil 7 enclosures and hope that my kit can do them justice. Cheers Simon

30th December 2012, 06:31 PM	#817
KyleinCowichan diyAudio Member Join Date: Dec 2010 Location: Cowichan Bay, BC	Well done! Perhaps Dave can comment on how those deflectors have had that effect. They definitely cut into the volume of the enclosure. Kyle

23rd January 2013, 08:33 AM	#818
SirByrd diyAudio Member Join Date: Dec 2010 Location: Seattle, WA	Built these prototypes, ~14 liters, tuned to ~47Hz with a 1"x1" port, F3 of 40 Hz. Final versions will be out of bamboo plywood.