Go Back   Home > Forums > > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Planet 10 hifi Home of the Frugal-phile™ - Planet 10 HiFi

Reply
 
Thread Tools Search this Thread
Old 5th February 2015, 04:27 PM   #1
RonObvious is offline RonObvious  United States
diyAudio Member
 
Join Date: Jan 2015
Default Stuffing for Markaudio Pensil R70.3?

My daughter sees me building speakers for my entertainment center recently and has decided she wants a pair of speakers for her upcoming birthday. OK, I'm game! We both like the idea of the Markaudio Pensil R70.3 TLs, with the CHR-70.3 full range drivers. My question is about stuffing. The plans simply say to use 0.7 lb of polyfill. I have never built TL speakers before. I understand the function of the stuffing is a little bit different than it is in a bass reflex or sealed box.

How should I distribute this 0.7 lb of stuffing? Staple it to the walls? Tease it out and suspend it with chicken wire? Attach it to the bracing? I guess I'm mainly unclear about whether the stuffing should be attached to the walls or suspended uniformly in the cavity? And should it be fluffed? Thanks in advance!
  Reply With Quote
Old 5th February 2015, 05:33 PM   #2
toobhed is offline toobhed  United States
diyAudio Member
 
Join Date: Jun 2010
I generally use a bit less than the prescribed amount and really fluff the hell out of it for maximum expansion....play around with different amounts to your taste. My pensils also have a 2 -3 inch high x 3/4" thick ply braces just above the bottom opening, one from back to front and one from side to side....this keeps the fill from falling down into the port area.
  Reply With Quote
Old 5th February 2015, 05:34 PM   #3
toobhed is offline toobhed  United States
diyAudio Member
 
Join Date: Jun 2010
I also try to fill evenly between top of cabinet to bottom above braces.
  Reply With Quote
Old 5th February 2015, 07:05 PM   #4
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Stuffing for Markaudio Pensil R70.3?
What Mario said.Well teased & spread evenly thru-out the box.

The purpose id to try and depress the unwanted harmonics of the pipe while leaving the fundemental to reinforce the bass. It is a balancing act.

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 February 2015, 07:23 PM   #5
RonObvious is offline RonObvious  United States
diyAudio Member
 
Join Date: Jan 2015
OK, will do. Thanks everyone!
  Reply With Quote
Old 12th May 2018, 11:26 AM   #6
Dhruv Meena is offline Dhruv Meena
diyAudio Member
 
Join Date: Aug 2016
can we use alpair 7.3 in pensil r70.3
  Reply With Quote
Old 15th May 2018, 07:34 PM   #7
chrisb is offline chrisb
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
Since it looks like the R70.3 is 1.5" deeper, but with the same height, depth and vent dimensions, if you could fashion cleating to recess the back panel, and adjust the driver cut-out / rebate, I'd think it should work.
__________________
Fate - something that people make up to try to explain how things worked out
  Reply With Quote

Reply


Stuffing for Markaudio Pensil R70.3?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Pensil with 7.3 boblamont Planet 10 hifi 22 28th July 2013 05:42 AM
Stuffing a Pensil roscoman Planet 10 hifi 7 24th October 2012 04:18 PM
Cutting plans for Pensil 12 and Super Pensil zman01 Planet 10 hifi 3 24th March 2011 05:48 AM
El70 in Pensil? type Planet 10 hifi 12 11th September 2010 08:41 PM
sansui R70 maxpou Solid State 2 1st November 2009 11:21 PM


New To Site? Need Help?

All times are GMT. The time now is 09:19 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki