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Continuum II Loudspeaker Kit
$406.76
1 Pair Continuum’s
Product Description
The “Continuum II” loudspeaker kit by Jeff Bagby
One of the more sought-after kits from Jeff Bagby which models the LS3/5a system originally designed for the BBC in England. See the write-up in the pdf below for design details. The Continuum remains true to the original BBC specification in the implementation of what the BBC called “Acoustic Scaling,” often referred to as the “BBC Dip.”
The “II” version is the result of the original tweeter being no longer available. Jeff discussed a few options on what to call the new version and settled on the simple, “II” version. (I suggested the “Discontinuum” )?
How is this different?
The “II” version is the next generation that uses the Morel, CAT308 tweeter instead of the discontinued, RS28A. The results using the new tweeter are exceptional.
Can I use the newer version – RST28A – when it becomes available? No, the response of the new version is very different and will require a redesign.
The Morel tweeters use the same physical cut out so switching out is simple. The terminals are at different locations, so you will need to tweak the cutouts for this.
The kit consists of everything you’ll need except the cabinet. Cabinet plans are included.
When You Buy These, Here’s What You Get:
Included in this kit are the full build plans. You can purchase is in two forms, depending on your resources: ( We give Jeff a small commission on every sale!)
The Bare Bones Version:
- 2 x Morel, CAT-308, Soft dome tweeter
- 2 x Aurum Cantus, AC130F1, 5.25″ Poly Cone mid-woofer
- 2 x Crossover components featuring MDL Poly or chose another brand. Sancast resistors or other brands. Specified Air Core Inductors.
Need all the goodies?
The Full Kit Package:
- Choice of Input Terminals
- All mounting hard hardware (screws) (Hardware option to make the front and back baffles removable – pictured above)
- The internal foam-damping material
- Color-coded hookup wire
- Optional push-on connectors
- MDF boards for mounting the crossover parts.
Have trouble soldering or reading a crossover diagram? We can assemble them for you at a nominal charge.
When you buy this kit, we send a small donation to the Bagby family in memory of Jeff.
Not ready to buy the kit? Consider donating to Jeff’s family.
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Alex Davidson (verified owner) –
I’ve owned many speakers over the years, and was getting to the point where I wanted a good pair of speakers for the lounge to watch TV and listen to music. I may not be a pure audiophile, but the Logitech 2.1 system I got was just painfully crappy to listen to – All movie bass on one frequency and then harsh punchy treble.
After some research I decided that a kit build would be the best way to get a decent level of quality without paying a fully ridiculous price. I narrowed in on the Continuum speakers because the LS3/5a they are based on was used by the BBC for editing – So the original intent is to have dialogue *and* music work well. I often find that speaker systems will over-emphasise normal speaking voice and make them sound a bit boomy.
I haven’t done much woodworking since school, so the cabinets were a bit of a challenge, but ultimately pretty straightforward. The wiring diagram is detailed and can be followed .
I’m super happy with the final result. The balanced detail of the final sound is as good as I’ve ever heard. I’ve enjoyed listening to favourite tracks and hearing the fine detail I haven’t heard before. They work very well for TV and movies with rich music and clear, transparent (not harsh) voices.
As others have said, they produce good low end for the size, but even Mr Bagby paired them with sub woofers to completely fill in the range. I use a Yamaha home theatre subwoofer very dialled down to fill in the low end.
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Recycled NZ Native Wood Continuum IIs
Alex Davidson (verified owner) –
I modified the cabinet design slightly based on something I saw online
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kevin looker (verified owner) –
My first multi-driver speaker build. I’m a seasoned woodworker and have done some electronics repair so I have all the tools, etc.
I built these to go in my workshop because I wanted a small, sealed box design that could be placed close to the wall.
They’ve only been played for about 6 hours but they’re sounding very nice and seem to be getting better. They don’t blow your mind upon first listening but as you continue to listen, everything sounds right. They image beautifully, are detailed but not harsh and produce tight bass. No, they don’t go that deep but they do produce excellent bass for their size. The only criticism may be that they are slightly warm but not muddy, loose or anything like that.
My main speakers are a pair of Revel Ultima Gems. I suspect that if I do a head to head, the Revels will sound better (or at least “bigger”) but I’ve been listening to only the Continuum 2’s and haven’t missed the Revel’s yet.
These are great speakers!
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Admin Paul from Tampa –
I am not a bookshelf/desktop speaker type of person. I heard an original pair of LS3/5’s back in the late 70’s, when most consumer type speakers were trending towards a larger size. I recall being somewhat amazed at the rich sound that came from such a small speaker. That was the only pair I ever saw/heard. Didn’t remember what they were called until I came across this kit, and searched the history of the originals and saw the pictures. This intrigued me into trying this kit. I already own a pair of Jeff Bagby designed, Fusion-12 Tempest speakers and I love them, so there was some confidence going in.
I have to say, these little speakers will not disappoint. I think they sound better from what I can recall of the originals. I have them playing along with a 12″ Ultimax subwoofer and they sound amazing, addicting even. These are going to be a favorite for a life time. If anything sounds better than these, pound for pound, one wouldn’t/shouldn’t care. Jeff Bagby knocked one out of the park with this design.
Also have to comment on the kit as delivered from Meniscus. Very complete with everything you need. This is my 2nd kit from them. It would be very hard to beat the price with all that’s included. Very satisfied with their service.
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