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
I updated the web page containing the details for the "FQ127".
FQ127
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. 😀
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!
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!
hacknet said: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.
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?
hacknet said: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.
hacknet said:because of the lower Fs, do i need to lengthen the box?
Most likely, yes.
dave
chipco3434 said:Timn8ter
I like that cat.
Thanks. If you like cats Dave's got a million of them. 😀
hacknet said: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.
Timn8ter said: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
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!
nominal size
6.5"
impedance
8 ohms
Fs
45hz
Qo
0.52
Diameter
8"
depth
2 9/10"
i really appreciate the help! thanks!
sorry, i`ve got no more data. its a vintage coral flat 6 driver. the above data was all i could pull out.
planet10 said:
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!
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 said: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.
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