Hello ,
I just completed a nice pair of bookshelf speakers
Using a pair of Fostex fe103en drivers. I next need to design
A subwoofer using a plate amp but I'm conflicted
About the size of the driver. A 8 inch or a 6.5
Anyone have expirience with this arrangement ?
Thanks
J
I just completed a nice pair of bookshelf speakers
Using a pair of Fostex fe103en drivers. I next need to design
A subwoofer using a plate amp but I'm conflicted
About the size of the driver. A 8 inch or a 6.5
Anyone have expirience with this arrangement ?
Thanks
J
Hi,
Volume displacement matters more than size,
but here just go for a good 8", much easier to
find a good one than a very high Xmax 6.5".
rgds, sreten.
Volume displacement matters more than size,
but here just go for a good 8", much easier to
find a good one than a very high Xmax 6.5".
rgds, sreten.
Thanks
Sounds like a good idea. Was leaning toward 8 but was afraid
It would overwhelm the other speakers .
Thanks again , very excited a out this project !!
Sounds like a good idea. Was leaning toward 8 but was afraid
It would overwhelm the other speakers .
Thanks again , very excited a out this project !!
For 6.5" you can look into the TB W6-1169. High X-max 6.5", and the ferrite magnet version costs less than the neo magnet one. Works in a fairly compact box (~25 litres) giving you external dimensions of 12" square.
If the ferrite version is anything like the neodymium version, 25L is huge.
For that driver, make it 15L, tuned ~40Hz.
Some questions for the OP.
1 - how loud do you want to go?
2 - how low do you want to go?
3 - how much space can you allocate for this project?
4 - how much power is available?
5 - how much money is available?
6 - how are your woodworking skills?
7 - (linked to #2) what sort of music do you listen to?
8 - have you tried BSC on your full-range speakers?
Answer these, and we'll be able to recommend something that'll do what you want. No point using a 6"er if you want loud movie effects.
Chris
For that driver, make it 15L, tuned ~40Hz.
Some questions for the OP.
1 - how loud do you want to go?
2 - how low do you want to go?
3 - how much space can you allocate for this project?
4 - how much power is available?
5 - how much money is available?
6 - how are your woodworking skills?
7 - (linked to #2) what sort of music do you listen to?
8 - have you tried BSC on your full-range speakers?
Answer these, and we'll be able to recommend something that'll do what you want. No point using a 6"er if you want loud movie effects.
Chris
Depends on the size of your room and if you want to go for a ported or selad box design I would say. Believe it or not 2 Jordan Eikonas in a MLTL design and you don't need a subwoofer at all - good down to 25Hz in a good sized room. Personally I don't think that bass it totally directionless. A musical bass note (other than a pure sinewave) contains a full harmonic structure of higher notes and it is these that locate the sound if you can do it stereophonically and coherently as possible.
1) not loud -match the fostex but accurate and some pop
And some good low extension.
2) 30 hz give or take.
3)well something that is inline with the book shelf speakers.
I'd say max size for sub 24"x24" or so
4) 100w plate amp
5) 250 -300 dollars
6) above average
7)classical jazz pop. Folk. Classic roc
k
8) NoI
Thanks Chris
Jeff
And some good low extension.
2) 30 hz give or take.
3)well something that is inline with the book shelf speakers.
I'd say max size for sub 24"x24" or so
4) 100w plate amp
5) 250 -300 dollars
6) above average
7)classical jazz pop. Folk. Classic roc
k
8) NoI
Thanks Chris
Jeff
Last edited:
Okay, I'd recommend trying baffle step compensation on your current speakers.
Here's some reading.
This should make the speakers sound considerably "warmer".
However, they still won't do bass (which is, I suspect, what you're after here).
An 8-10" subwoofer will probably suit you fine.
Something like this: Dayton Audio RSS210HF-4 8" Reference HF Subwoofer 4 Ohm 295-456
Now, what cabinet?
You'll need to add that driver's Thiele-Small Parameters, but then you're off. Download WinISD Pro.
HTH
Chris
Here's some reading.
This should make the speakers sound considerably "warmer".
However, they still won't do bass (which is, I suspect, what you're after here).
An 8-10" subwoofer will probably suit you fine.
Something like this: Dayton Audio RSS210HF-4 8" Reference HF Subwoofer 4 Ohm 295-456
Now, what cabinet?
You'll need to add that driver's Thiele-Small Parameters, but then you're off. Download WinISD Pro.
HTH
Chris
Thanks
Thanks Chris - I'm going to ivesrigatw tonigh
I have winsd . Can't wait .I'd like to post a pic of the speakers later .
Thanks Chris - I'm going to ivesrigatw tonigh
I have winsd . Can't wait .I'd like to post a pic of the speakers later .
Ya, I'd go 10" or even 12". Why only 8"?
I'd expect the 8" to go much louder than the Fostexes: when turned up a bit, there's a lot of distortion in the upper midrange of the Fostex FE1** line, which is why so many of them are subject to extensive cone treatment (IMO, this doesn't fix the problem entirely, though appears to help).
If the 8" will outrun them, why bother going bigger?
Chris
There is absolutely no reason I would ever go with anything smaller than a 10" sub.
It will go lower, louder and with less distortion than a 8".
Size matters.
It will go lower, louder and with less distortion than a 8".
Size matters.
when turned up a bit, there's a lot of distortion in the upper midrange of the Fostex FE1** line
Hi Chris, I absolutely agree with the 126 and 127, although fortunately, the 103 is totally free of that.
Hi Chris, I absolutely agree with the 126 and 127, although fortunately, the 103 is totally free of that.
Interesting.
I'll eat my previous words, then.
Go with a driver as big as you can get away with. 😀
change of heart
Decided to go 10 inch Dayton RSS265HF-4. 1 cu ft sealed encloser. Optimum demension on WinISD are 20.9 H 13.6 w and 8.73 D. Do you mount the woofer in the center or does it matter wear you mount it?
Thanks
Jeff
Decided to go 10 inch Dayton RSS265HF-4. 1 cu ft sealed encloser. Optimum demension on WinISD are 20.9 H 13.6 w and 8.73 D. Do you mount the woofer in the center or does it matter wear you mount it?
Thanks
Jeff
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