| dranreb&* |
| We were having an "audio fair" here in Philippines and I heard all this speaker and its truly amazing. And one of the speaker(Fe127e) was design by "Timn8ster" :bigeyes: :hot: :D |
|
|
| Timn8ter |
Thanks Bernard. I'm happy you had a good time, I wish I could have been there. Along with my speakers in this picture are other Fostex projects built by "Handyman". He's a skilled workworker. I know most attendees of the Audio Fair are not familiar with DIY speakers so I wanted to show something that was easy to build, inexpensive and sounds great. From what I've been told I think it was a success. :)
I updated the web page containing the details for the "FQ127".
FQ127 |
|
|
| djQUAN |
| too bad I wasn't able to come by and visit. I had the chance of buying the parts I needed for my next amp and I couldn't pass. :D |
|
|
| hacknet |
hi,
they look great!!
are there any simple formulas around to churn out a box for my drivers?
i`m trying to plonk in a pair of 6 1/2" drivers with a Fs of around 45hz and a Qts of about 0.5. is it as simple as lengthening the box? thank you for your advice! |
|
|
| Timn8ter |
| quote: | Originally posted by hacknet
hi,
they look great!!
are there any simple formulas around to churn out a box for my drivers?
i`m trying to plonk in a pair of 6 1/2" drivers with a Fs of around 45hz and a Qts of about 0.5. is it as simple as lengthening the box? thank you for your advice! |
There are many free software tools to help design a box.
WinISD is very popular. You could also visit
Quarter Wave which is Martin King's website. Best to start with a primer like this or this. |
|
|
| hacknet |
| sorry, i think i din`t phrase my question correctly. i was hoping to do a similar voight pipe but with a 6.5" driver with a Q of 0.5 and an Fs of 45hz. because of the lower Fs, do i need to lengthen the box? |
|
|
| Timn8ter |
| quote: | Originally posted by hacknet
sorry, i think i din`t phrase my question correctly. i was hoping to do a similar voight pipe but with a 6.5" driver with a Q of 0.5 and an Fs of 45hz. because of the lower Fs, do i need to lengthen the box? |
In general, yes. The FE127E has an Fs of 70 so your design should have a longer length. However, the cross-sectional area (width*depth) is just as critical. The best thing to do would be to learn to use Martin's worksheets to know what dimensions are best. |
|
|
| chipco3434 |
Timn8ter
I like that cat. |
|
|
| planet10 |
| quote: | Originally posted by hacknet
because of the lower Fs, do i need to lengthen the box? |
Most likely, yes.
dave |
|
|
| hacknet |
| i`d have another go at the spreadsheet... |
|
|
| Timn8ter |
| quote: | Originally posted by chipco3434
Timn8ter
I like that cat. |
Thanks. If you like cats Dave's got a million of them. :D
| quote: | Originally posted by hacknet
i`d have another go at the spreadsheet... |
If you need help you could post the T/S parameters and the enclosure your thinking of and one of us could give it a go. |
|
|
| planet10 |
| quote: | Originally posted by Timn8ter
If you like cats Dave's got a million of them. |
Well a dozen... started talking about another DIy event at the mountain... this time in the summer so that we can have an outdoor setup (and have a bit of camping capability too)
dave |
|
|
| hacknet |
Thanks for the help offered!
nominal size
6.5"
impedance
8 ohms
Fs
45hz
Qo
0.52
Diameter
8"
depth
2 9/10"
i really appreciate the help! thanks! |
|
|
| Timn8ter |
| Do you any other parameters such as Vas, BL, etc.? Is this an auto sound driver? |
|
|
| hacknet |
| sorry, i`ve got no more data. its a vintage coral flat 6 driver. the above data was all i could pull out. |
|
|
| Timn8ter |
| quote: | Originally posted by planet10
Well a dozen... started talking about another DIy event at the mountain... this time in the summer so that we can have an outdoor setup (and have a bit of camping capability too)
dave |
Sounds like fun!
| quote: |
sorry, i`ve got no more data. its a vintage coral flat 6 driver. the above data was all i could pull out. |
I suggest starting a new thread on this forum and asking if anyone has the specifications for this driver or experience working with it. That's just not enough information to do accurate modeling. Sorry. |
|
|
| hacknet |
| what other information do you need? i`ll continue digging.. |
|
|
| planet10 |
Not much info supplied by Coral -- you'll need to find someone who has measured a set.
dave |
|
|
| Timn8ter |
| quote: | Originally posted by hacknet
what other information do you need? i`ll continue digging.. |
Vas
BL
Qes and Qms would be nice too. Try asking over at Full Range Driver. |
|
|
|
