FH3 felt
#1 FH3 felt
I've started to build a pair of FH3's and don't have anything to line the area behind the speaker with the plans just say line with felt what do I use and where can I buy some?
Also do I install this felt and stuffing as I assemble the speakers or or is it possible to put then afterwards.
Also do I install this felt and stuffing as I assemble the speakers or or is it possible to put then afterwards.
#2 Re: FH3 felt
Bizzie wrote:I've started to build a pair of FH3's and don't have anything to line the area behind the speaker with the plans just say line with felt what do I use and where can I buy some?
Also do I install this felt and stuffing as I assemble the speakers or or is it possible to put then afterwards.
A particularly nice product is marketed in NA as "UltraTouch" insulation - felted recycled denim, and sold through a variety of trade distributors and home improvement big box stores- (e.g. Home Depot)
http://www.bondedlogic.com/
The 3"thick batting is a bitch to peel into even thinner layers, but there is a special version of this material laid up 1/2" thick with bonded fabric backer that is an absolute joy to work with. Since we buy it direct from Bob at CSS in Abbotsford, BC, I'm embarrassed to say I don't know about, and have never needed to research other distribution channels.
I've also used automotive and home upholstery underpadding, but most of those now are synthetic based, and not quite as effective as cotton / denim felt.
Not a fan of the "acoustic foams" - particularly in enclosures with this small a CSA.
I'd strongly suggest installing all of the wall damping and fiber fill in the tapered section behind the fold divider before attaching the second side panel - even if you affix the top panel last, it'll be very difficult to reach the apex of the taper after the second side panel is in place.
#4
Bizzie,
I use " thick wool felt carpet underlay on all my FH3 builds and supply this with my flat pack FH3 kits.
As Chrisby say's this needs to be applied during construction.
I use general purpose household spray adhesive to fix it in place.
I cannot spare any of my stock as I need what I have for a couple of my Edingdale speaker builds. However, I know Dave The Bass (DTB) has at least half a full roll and I'm sure if you send him a PM he'll send you enough for the cost of the postage.
Apart from the " wool felt you'll need a small quantity of Dacron to stuff in the rear taper and below the driver, if you are using any the Mark Audio drivers. This helps fine tune the bass that can be a little boomy with the MA drivers. This additional damping is not required for any the Fostex 4" drivers that tend to be bass light and really need corner loading to get decent bass in this design. You can easily get Dacron (search for soft toy stuffing) from ebay, but I have found if you have a local upholsters / furniture maker near you they will give you a couple large handfulls for free.
I use " thick wool felt carpet underlay on all my FH3 builds and supply this with my flat pack FH3 kits.
As Chrisby say's this needs to be applied during construction.
I use general purpose household spray adhesive to fix it in place.
I cannot spare any of my stock as I need what I have for a couple of my Edingdale speaker builds. However, I know Dave The Bass (DTB) has at least half a full roll and I'm sure if you send him a PM he'll send you enough for the cost of the postage.
Apart from the " wool felt you'll need a small quantity of Dacron to stuff in the rear taper and below the driver, if you are using any the Mark Audio drivers. This helps fine tune the bass that can be a little boomy with the MA drivers. This additional damping is not required for any the Fostex 4" drivers that tend to be bass light and really need corner loading to get decent bass in this design. You can easily get Dacron (search for soft toy stuffing) from ebay, but I have found if you have a local upholsters / furniture maker near you they will give you a couple large handfulls for free.
#5
Thanks Colin thats very helpful, I am using the Mark audio Alpair 7's so I will need the dacron stuffing.
Do you use biscuits to hold your speakers together or just let the glue do it, I have a biscuit jointer and thought it would make a stronger build and keep every thing in line while the glue dries but will need careful marking out so everything lines up.
Do you use biscuits to hold your speakers together or just let the glue do it, I have a biscuit jointer and thought it would make a stronger build and keep every thing in line while the glue dries but will need careful marking out so everything lines up.
#9
I also have acres of the stuff going spare, which you are welcome to if I'm nearer than Neal...
I also have some mahogany and ebony veneer if you're interested
I also have some mahogany and ebony veneer if you're interested
There's nowhere you can be that isn't where you're meant to be
#11
Where are you Ed that sounds like an offer too good to miss thanksed wrote:I also have acres of the stuff going spare, which you are welcome to if I'm nearer than Neal...
I also have some mahogany and ebony veneer if you're interested
#12
http://www.vitalstates.org/hma/contact/hma-contact.htmBizzie wrote:
Where are you Ed that sounds like an offer too good to miss thanks
There's nowhere you can be that isn't where you're meant to be
#14
or a pillow. You don't know this, but you need some new pillows. Ask your significant other.You can easily get Dacron (search for soft toy stuffing) from ebay, but I have found if you have a local upholsters / furniture maker near you they will give you a couple large handfulls for free.
In single malt we trust.