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Old 14th January 2007, 03:12 AM   #1
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Default Mini-Cigar pc speakers

I have some HiVi B3s coming next week and I'm down in my garage and spot these cigar boxes and thought, wow, those would be kind of cool looking as PC speakers. Then I notice some short speaker stands I had laying around.

The only thing is these boxes are a little thin and need some beefing up. How much reinforcement do you all think is necessary here?

The boxes are 6.5h x 4.5 x4.75d.

Click the image to open in full size.
Click the image to open in full size.

I'll call em the Mini-Cigars.
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Old 14th January 2007, 02:48 PM   #2
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You could get some 1/2in mdf and liquid nails and double up all the walls of the box. Or you could try the method that Spendor uses, use thin walls and some sort of lossy damping material attached to the walls to keep resonance down? Im also looking to build some small speakers using the 3-4in hivi or tangbang drivers. I plan on using them with a small active sub with my new lcd tv. Good luck.
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Old 14th January 2007, 05:03 PM   #3
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ImperfectCircle:

I too will be using with a small active sub. What are your plans there? I thought about buying a small 2.1 system and hacking into it but need recommendations. The Cambrige PC Works system can be had for $40. Not sure where that is xovered though.

What about this little JBL amp?
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Old 14th January 2007, 05:33 PM   #4
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Im going to be using a Panasonic SA-xr50 receiver to power the satelites. As for the sub im not sure just yet, but im thinking of using the 8in Apexjr sub Apexjr sub or the 8in TangBang W8-740c. Since my receiver has a subwoofer output with a low pass filter Im going to just use my trusty old NAD 2155 in bridged mono mode.

Have you built speakers using these little hivi drivers before?? Im a little unsure about such a small single driver. Im only using them from 150hz up. So im hoping that since they are free from playing bass, and will only be used in a small 14x16ft room for tv/movies they will be sufficeint. I think ill try building a pair and see how they sound. I may have to go with a slightly larger 2-way. Good luck
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Old 14th January 2007, 06:47 PM   #5
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For a nice inexpensive amp try the Sonic impact T-amp, or one of the diy Tripath kits. For the sub you could just buy one of the inexoensive plate sub amps, parts express sells 25w and 70w amps for under $50.
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Old 16th January 2007, 10:16 AM   #6
Pano is offline Pano  United States
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Those are cool.

1/2 MDF would certainly do the trick, but seems like a bit much. I just picked up some 5/16" hardboard for a similar use. That should be enough to stiffen those C-boxes, right? Or even 1/4" - they aren't very big, those boxes.

Keep us posted as to your progress.
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Old 17th January 2007, 07:27 AM   #7
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Yeah Pano, mahalo, I'm with you. 5/16" feels like it should be good. A layer of liquid nails and the hardboard should do it. As far as the Sonic-T goes, I bought an Yamaha 6.1 AV receiver off craig's list for $100. Not very diy but I wanted a remote and the active xover. I might try one of those BBs Insignias as my Sub!
I really like those cigar boxes. The shop by my office has a ton of these and they vary in size, type of wood, finish. I got these for $6. I got a bigger one with big thick walls but I only got one! Maybe I should build a mini-sub in it. The shop owner says he sells mostly to guitar builders who I presume use the woods as inlays.
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Old 17th January 2007, 08:28 AM   #8
Pano is offline Pano  United States
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Looking foward to seeing what you do with them- the concept is cool. You might like them enough to make some pretty stands for them. One things for sure, they'll be smokin!

Laterz,
Pano
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Old 17th January 2007, 10:14 AM   #9
sreten is offline sreten  United Kingdom
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Hi,

http://www.zaphaudio.com/audio-speaker18.html

Mounting the B3S in the side will make the BSC options more accurate.
If you mount them on the front use the 0.6 from top to 1 from one side
to 1.6 from the other side ratios (0.6:1 <=> 1:1.6) to smooth response.

Note the above use a 3L enclosure which is oversized for Vas = 0.8L.
1.5L to 2L is all that is needed so reinforce the box any way you like.

Cute they may be but they are viciously insensitive. Small amps will
only make sense if used nearfield with no BSC. Farfield an AV amplifier
for power and filtering with subwoofer is the sensible option.

No subwoofer the NS3 is a better option than the B3S :

http://www.zaphaudio.com/archives.html

/sreten.
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Old 17th January 2007, 11:38 AM   #10
Pano is offline Pano  United States
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Yeah, Sreten is right about that. They are "viciously insensitive." What, about 78dB?

You'll need a good bit of power to get much sound out of them.
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