mMar-Kel70 Build - Page 4 - 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 2nd April 2012, 12:21 AM   #31
ped is offline ped  United States
diyAudio Member
 
Join Date: Apr 2003
Location: PA
Quote:
Originally Posted by KyleinCowichan View Post
I might glue some scrap together for a test cut on the table saw. It makes me nervous to send a nearly complete box through the saw. KM

Obviously you do need to take your time with it, but it can be done.

Here are some pics of the Fonkensteen's I built which I believe are a bit bigger than the Mar-kel. I did these in multiple passes with an 80T blade, previously I cut the bevels on a pair of Fonken-prime's the same way...
  Reply With Quote
Old 2nd April 2012, 01:20 AM   #32
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by ped View Post
the Fonkensteen's I built which I believe are a bit bigger than the Mar-kel
Quite a bit bigger.

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 2nd April 2012, 01:21 AM   #33
diyAudio Member
 
Join Date: Feb 2004
Location: Appleton, WI
Quote:
Originally Posted by ped View Post
Obviously you do need to take your time with it, but it can be done.

Here are some pics of the Fonkensteen's I built which I believe are a bit bigger than the Mar-kel. I did these in multiple passes with an 80T blade, previously I cut the bevels on a pair of Fonken-prime's the same way...
Excellent workmanship.

What method did you use to make the irregular flush mount for the 120?
  Reply With Quote
Old 5th April 2012, 07:44 PM   #34
doggy is offline doggy  Canada
diyAudio Member
 
doggy's Avatar
 
Join Date: Aug 2004
Location: Princeton B.C.
I know the Mar-Kel70 is a proven design; but i am curious how the width of the front baffle effects the imaging? because of the 45 deg.angle cuts the front is fairly narrow. No doubt wider baffles have been tried. Thank-you!
  Reply With Quote
Old 5th April 2012, 07:54 PM   #35
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by doggy View Post
I know the Mar-Kel70 is a proven design; but i am curious how the width of the front baffle effects the imaging? because of the 45 deg.angle cuts the front is fairly narrow. No doubt wider baffles have been tried. Thank-you!
Narrow baffle withbig champhers give a lower diffraction signature. The CGR version has a wider baffle (if you mount the driver of the wide side)

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 5th April 2012, 08:33 PM   #36
chrisb is online now chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Quote:
Originally Posted by doggy View Post
I know the Mar-Kel70 is a proven design; but i am curious how the width of the front baffle effects the imaging? because of the 45 deg.angle cuts the front is fairly narrow. No doubt wider baffles have been tried. Thank-you!

while not specifically restricted to the EL70, we've tried a succession of wide/shallow enclosures over the years (most recently with the EL166/FF85K MTM) , and while they can definitely add what our friends at SH used to call "balls" (due no doubt in part to reduction of baffle step loss) and width of soundstage, the narrower baffles tend to excel at more precise imaging and resolution of depth

tall double mouth horns/manifolds such as Spawn family etc function effectively as MTMs due to the LP filtering of driver coupling chamber (in a Back Loaded enclosure of any type, the room is the "compression" chamber ), and can deliver tremendous image scale while retaining what I'd describe as precise location specificity, albeit at the expense of build complexity and required listening distance


and interesting compromise I've found quite workable (for my situation at least) are variations on narrow bipoles - most notable something like the MicroTowers
__________________
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
Old 5th April 2012, 11:36 PM   #37
doggy is offline doggy  Canada
diyAudio Member
 
doggy's Avatar
 
Join Date: Aug 2004
Location: Princeton B.C.
Quote:
by chrisB:
the narrower baffles tend to excel at more precise imaging and resolution of depth
I am already building the MarKel70, sounds what i want
  Reply With Quote
Old 6th April 2012, 03:21 AM   #38
diyAudio Member
 
KyleinCowichan's Avatar
 
Join Date: Dec 2010
Location: Cowichan Bay, BC
Hey Doggy,

I am listening to the BBC 3 overnight stream and really digging the mMar with my Helder TA2020 amp. So much joy for so little cash. I am going to try and build a new trapezoidal enclosure for the EL70s later in the spring/summer. The EL70 has so much more to give that it's a shame to have them cooped up in the mMar.

KM
  Reply With Quote
Old 6th April 2012, 07:48 PM   #39
ped is offline ped  United States
diyAudio Member
 
Join Date: Apr 2003
Location: PA
Quote:
Originally Posted by loninappleton View Post
Excellent workmanship.

What method did you use to make the irregular flush mount for the 120?
Thanks for the compliment!

As far as the irregular driver cut out goes, I used the technique outlined on an exquisiteaudio.ca page, which unfortunately doesn't appear to be online anymore. Basically it involves making two templates with a router (1/4" straight bit), you run the router around the perimeter of the driver to create the first template. Then run the router around the inside of the first template to create the second. Then use the 1/4" bit and a 3/4" bushing with the second template to cut the actual recesses. A bit of a PITA, but it does work. I do have the web page saved if you are really interested.
  Reply With Quote
Old 7th April 2012, 12:41 AM   #40
doggy is offline doggy  Canada
diyAudio Member
 
doggy's Avatar
 
Join Date: Aug 2004
Location: Princeton B.C.
Quote:
By: KyleinCowichan
The EL70 has so much more to give that it's a shame to have them cooped up in the mMar
I got the EL70 from CSS as Planet10 lnformed me about,i went the low cost way. Thanks goes to Dave and ChrisB for their suport in my info. search. The front bevels are 30 deg., for what reason i ran out of faceplate space for the bevel-maybe i cut some material a little short for trimming. It is a solid box, using the 3/4" maple. Just playing one speaker now as the faceplate glue is drying on the 2nd unit. The EL70 is very musical and articulate.


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
Mar-Kel70 in Sweden Rullknufs Full Range 1267 28th December 2013 11:20 AM
mMar-Kel70 vs Mar-Kel70 Bigun Full Range 17 3rd May 2012 08:47 AM
Three flavours of Mar-Kel70 (for EL70) planet10 Planet 10 hifi 7 17th January 2012 08:15 AM
mMar-Kel70 in Chile AlejandroR Full Range 0 17th August 2011 01:56 PM
Do i need to build main supply (240v) filter?Or build power distribution? thomgun_lc Chip Amps 9 16th September 2005 09:52 AM


New To Site? Need Help?

All times are GMT. The time now is 03:44 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