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#1 |
diyAudio Member
Join Date: Jan 2011
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How small can you make a set of HiFi speakers?
A few months ago I realized that I was going to be traveling a lot over the next few years, and I started to explore how tiny I could design a HiFi system without losing fidelity. My goal was to produce a set of small speakers, with a tiny matching amp, that could travel in a suitcase with me, my laptop, and my FLAC collection. What I developed is the 8" high black speaker you can see in the photo. It uses the magnificent Peerless Tymphany 83093 widerange driver. However, in all but the smallest rooms, the 2" widerange needed a little more deep bass, so I added a woofer, using the SEAS driver from my Linkwitz Pluto (the white tube) to boost output power below 200Hz. Suddenly I found I had not only a portable system, but a top-notch set of HiFi speakers capable (IMO) of holding their own in any 'average living living room'. The amplifier modules are described over at the Class-D forum: http://www.diyaudio.com/forums/class...8-example.html Photo below. You can find the detailed stuff at my website: Trevor Marshall - Ground Effect Omnidirectional HiFi Loudspeakers . Last edited by trevmar; 16th January 2012 at 10:58 AM. Reason: clarification |
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#2 |
diyAudio Member
Join Date: Nov 2009
Location: Cyberia
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looks nice, you could make it even better with such silverconed Peerless, and damp the tubes outer wall with dynamat or something like that
![]() Last edited by DYNABLASTERTUNERS; 16th January 2012 at 02:15 AM. |
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#3 |
diyAudio Member
Join Date: Mar 2002
Location: Sacramento, California
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Neato !
If you could find a wider range for the woofer tube, (negating the tweeter tube) It would be even more elegant ![]()
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http://www.hitswares.com/ |
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#4 | |
diyAudio Member
Join Date: Jan 2011
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Quote:
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#5 |
diyAudio Member
Join Date: Dec 2001
Location: Bremerton, WA.
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Trevor,
Do you normally set those up on the floor, or possibly a large desktop as "computer" speakers? Nice project. Cheers, Dave. |
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#6 |
diyAudio Member
Join Date: Jan 2011
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Dave, the speakers must be placed on the ground, so that they can use the ground-effect to radiate bass more effectively. They make good computer speakers, as they love complex 'computer-room' environments..
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#7 |
R.I.P.
Join Date: Nov 2003
Location: Brighton UK
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Hi,
An idea is to make the suitcase the additional subwoofer enclusure for portability. rgds, sreten. |
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#8 |
diyAudio Member
Join Date: Jan 2011
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True, but I rejected that because of resonace (most suitcases are more resonant than PVC piping), and because I figured out an (IMO) much better way to produce an omnidirectional sound field
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#9 |
diyAudio Member
Join Date: Oct 2010
Location: philadelphia
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Hi Trevor,
very interesting design. The Peerless FR on the response graph is omni only upto 4Khz. So does the the smaller tube also need to be kept at ground level. BTW, any reason you preferred to use the Peerless FR instead of the Aurasound NSW2 used in the Pluto ![]() Did you also experiment with the idea that perhaps bipole FRs could also possibly give near omnipolar radiation ![]() Thanks. ![]() |
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#10 |
diyAudio Member
Join Date: Dec 2001
Location: vancouver
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