Looking for a driver to pair with PE 0.25 cu ft cabinet

gus6464 · 14th April 2011, 07:06 AM

Will be used as computer speakers which is why I want to keep the cabinets small. As far as budget goes would like to keep the cost of a pair at ~$120.

I was looking at the EL70 ported kit from CSS but it is supposed to be for a .5 cu ft cabinet so I am not sure if it would work with something half the size.

Shoog · 14th April 2011, 08:26 AM

Why not turn the cabs aperiodic - that allows for suboptimal cab sizes at a slight penalty in bass extension.

Shoog

planet10 · 14th April 2011, 08:55 AM

Here you go... The EL70 will be good from ~4.5 litre up to 14 litre

PE cab is 7 litre

dave

gus6464 · 14th April 2011, 10:01 PM

Is the TB W4-1337SD a better driver than the EL70?

fakeout · 6th March 2012, 10:39 AM

Quote:

Originally Posted by planet10

Here you go... The EL70 will be good from ~4.5 litre up to 14 litre

PE cab is 7 litre

dave

What is PE? Does that mean the ideal is 7 litre?

Scottmoose · 6th March 2012, 10:53 AM

PE = Parts Express, i.e. the generic boxes being described by the OP.

spgjmf · 7th March 2012, 07:16 PM

gus6464 ,
did you build this configuration? Seems like a reasonable ready build DIY project...

Looking at planet10's screen shot of the speaker plot, am I correct in reading the port size as 2"x8" ( 51mmx207mm)?

regards,
Jeff

chrisb · 08:20 PM

Quote:

Originally Posted by spgjmf

gus6464 ,
did you build this configuration? Seems like a reasonable ready build DIY project...

Looking at planet10's screen shot of the speaker plot, am I correct in reading the port size as 2"x8" ( 51mmx207mm)?

regards,
Jeff

I read it as .00204m^2 = 3.16in^2 or 2040mm^2 * x .207m = 8.15" or 207mm

*45.16mm squared if you like, but I'm a big fan of the constricted slot port, which you'll see on a lot of Dave's smaller designs as a full cabinet width "shelf", that may need to be folded into an L at the back . We did some comparative listening a few years back, and ( were able to convince ourselves that we) heard better performance from the narrow slots. It's also a lot easier to adjust dimensions by changing height / width of slot (may sometimes need internal spacers) and length of shelf. Sometimes all you need to do to adapt a box to a driver with slightly different tuning requirements is to add/change spacer blocks.

spgjmf · 8th March 2012, 02:35 AM

thanks Chrisb.

slots are cool, I too like the idea. In this case using pre made cabinets, A tube port would be easier

...I think

I'll continue to think about it....I am missing the sweet mids I recall from full range speakers ....

best,
Jeff

spgjmf · 9th March 2012, 08:07 PM

thinking about this more, need a little help with the port

I'm going with the el70 in the small PE cabinets (7l)
now with the port....

the info given above was for the area of the port ( not the diameter). right?
Given that I'd like to use a round port and tube ( again, keeping the construction simple with PE's parts). I found a 1 3/4" x4" port tube, which has the same surface area ( about), but is half as long as the 8". Will this still work, or does it raise the tuning to much?

Any suggestions for a stock port tube which will work with the small PE cabinet?

thanks for any advise,
Jeff

14th April 2011, 07:06 AM	#1
gus6464 diyAudio Member Join Date: Oct 2008	Looking for a driver to pair with PE 0.25 cu ft cabinet Will be used as computer speakers which is why I want to keep the cabinets small. As far as budget goes would like to keep the cost of a pair at ~$120. I was looking at the EL70 ported kit from CSS but it is supposed to be for a .5 cu ft cabinet so I am not sure if it would work with something half the size.

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14th April 2011, 08:26 AM	#2
Shoog diyAudio Member Join Date: Aug 2002 Location: Eire	Why not turn the cabs aperiodic - that allows for suboptimal cab sizes at a slight penalty in bass extension. Shoog

14th April 2011, 10:01 PM	#4
gus6464 diyAudio Member Join Date: Oct 2008	Is the TB W4-1337SD a better driver than the EL70?

6th March 2012, 10:53 AM	#6
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	PE = Parts Express, i.e. the generic boxes being described by the OP.

7th March 2012, 07:16 PM	#7
spgjmf diyAudio Member Join Date: Jan 2008	gus6464 , did you build this configuration? Seems like a reasonable ready build DIY project... Looking at planet10's screen shot of the speaker plot, am I correct in reading the port size as 2"x8" ( 51mmx207mm)? regards, Jeff

8th March 2012, 02:35 AM	#9
spgjmf diyAudio Member Join Date: Jan 2008	thanks Chrisb. slots are cool, I too like the idea. In this case using pre made cabinets, A tube port would be easier ...I think I'll continue to think about it....I am missing the sweet mids I recall from full range speakers .... best, Jeff

9th March 2012, 08:07 PM	#10
spgjmf diyAudio Member Join Date: Jan 2008	thinking about this more, need a little help with the port I'm going with the el70 in the small PE cabinets (7l) now with the port.... the info given above was for the area of the port ( not the diameter). right? Given that I'd like to use a round port and tube ( again, keeping the construction simple with PE's parts). I found a 1 3/4" x4" port tube, which has the same surface area ( about), but is half as long as the 8". Will this still work, or does it raise the tuning to much? Any suggestions for a stock port tube which will work with the small PE cabinet? thanks for any advise, Jeff