stevie

It's a nice idea but, unfortunately, there's more too it than sticking a driver in a cab. The problem is that the nice flat response of your full-range driver will stop being flat as soon as you put it in a cabinet. The baffle step will rear its ugly head and the overall sound will be very middy - and not at all hi-fi. I've designed this kind of speaker in the past and sometimes you can get away with just a passive notch filter to flatten the response. Sometime you''ll need more than that. But you won't be able to design the filter unless you can measure the results.

LFSys speakers were designed principally for use with bass guitar, but I spent a lot of time developing the crossovers, testing and retesting, and making sure that the LF and HF drivers worked seamlessly together. This involved many hundreds of frequency measurements of different types, although the acid test of any of the various designs was always how well they reproduced male and female voice. I hadn't thought of these cabs as something for acoustic guitar but I can see why they would work. I do know they sound great with keyboards and as an FRFR cab for electric guitar. I guess they could well be a one-cab solution for multi-instrumentalists.

Very impressive piece of work, @ChrisDev

I've always had the impression that shopping sites wipe the contents of your basket after a while - not just Blue Arran.

Yes, the cab is permanently sealed after it has been assembled. Access is quite easy through the driver holes. See if you can find the thread on here where Funkle assembles the kit cab. That might help. You need to assemble the panels in the following order: back panel and braces (use a set square or similar to make sure the braces are at right angles). Then glue one side. Then the bottom. *Then the baffle.* Then the second side, and finally the top. If the panels have been cut accurately, all the joins should be air tight as long as you use plenty of glue. You could also use polyurethane glue if the cuts are iffy, as that expands to fill gaps. If you're short of braces, use screws to hold the panels in place while the glue dries. Remove the screws, (if you want) and fill the holes afterwards.

It's starting to look like my workshop.😃 Tuffcab's available in a variety of colours. You could also buy white and use an acrylic tint. Last time I looked, Blue Aran was out of Tuffcab in everything but black, although they say they'll eventually get more stock. There are other options, but as we know Tuffcab works well and is specifically designed for the job, you might be better off waiting. Anything else is an experiment, I'm afraid. To find the centre for a handle (or a top hat), you need to load the cabinet and place a piece of 1x1" batten underneath it. Adjust the batten until you find the centre of gravity and the cab doesn't tip over.

Have you had a word with @Chienmortbb on here? I believe he's taken over from OBBM. He certainly makes some very nice cables at reasonable prices.

Have a word with @doc40hz.

The recessed panel, if I remember correctly, was made from a small panel of wood fixed behind the input cutout. Ii's not relevant if you're using a commercial backplate

Great job. Well done! I'm glad you eventually decided to use some decent wood. It makes all the difference.

Try Blue Aran for P. Audio. They're the distributor in the UK. They do need a proper crossover though.

Agreed. Try to get as tight a fit as possible and seal with silicon. It's an excellent glue. As @GlamBass74 says, don't worry about the holes in the battens.

It depends when your short tenure was, @Mykesbass. 🙂 The Guitar Shop doesn't ring a bell but it's not exactly a name that sticks in your mind. I've sent you a pm.

Nice reviews, guys, thanks. The cheque's in the post. 😄 Couple of things. The driver is indeed the Faital Pro 12PR320. All the drivers I use are standard drivers selected from the top manufacturers. This means that you'll be able to easily get spares in ten or twenty years time even if you're in Australia. On the handle issue, I agree that there's nothing worse than an amp wobbling on top of a speaker cab. However, the LFSys handle extends just 6.5mm from the top of the cabinet. That's not a lot. The smallest standard feet with screws fitted to amps are 9mm high. Even the cheap stick-on ones on my Ashdown RM500 are 8.5mm. So it's unlikely your amp will wobble.

It seems that somebody in the (Eminence?) production department was on the bourbon. It looks like a clear manufacturing defect to me. If it's simply an excess of glue spilt onto the spider, it shouldn't affect the performance of the driver. If the glue was actually meant for the speaker and missed, it could be problematic. Is the driver all right otherwise?

You might like to look at the P.Audio tweeters, @42Hz. They're used by a lot of bass cab makers and are half the price of the Eminence here in the UK.

By way of explanation, it was my Ashdown that John tested at the Bash. I occasionally use the RM500 with the tone controls switched out. I can't say I've noticed any difference between that and having the controls at 12 o'clock.

The deviations from flat on the Gnome are broad band (i.e. over several octaves), which means they'll be quite audible. It looks to me like the amp has been "voiced" to sound good with a cheap, small speaker cabinet. The rolloff below 100Hz will help protect small speakers from overload, whilst the 150Hz peak is a typical ruse to make the sound subjectively more "bassy". The midrange dip will counter the usual "shouty" mids found in many smaller cabs and the HF lift will compensate for the lack of top end and off-axis rolloff found on most bass cabs. So I guess there is a logic behind it.

I agree with that. But bear in mind that the recording engineer will usually have started with a relatively flat-response, uncoloured signal and modified it to suit his purposes.

Open your books at page 21, children.😀

I think @Phil Starr answered that question. Even if he were to receive a commission, it wouldn't make him rich. This is a labour of love rather than a get-rich-quick venture. It will remain a small business - with an exclusive clientele. 😊 @Chienmortbb was indeed involved in the development of these speakers, acting as a beta tester for the various versions and providing valuable feedback on what he liked and didn't like. Phil also gigged different versions of the Silverstone and made suggestions for improvements that I was happy to incorporate. The three of us have chatted and swapped ideas about speaker design for a good few years now, and because we live relatively close to each other, occasionally get together to audition (and measure) the designs we've developed. There are other Basschatters who have encouraged me and helped me get this far, and I'd like to take this opportunity to thank them here. @LukeFRCcontributed his graphics expertise to the project. He's responsible for the cool logo and the colour and text stylings of the website. He also designed the stickers and badges for the cabs, which I'd never have been able to do myself. @RichardH helped greatly by providing technical drawings and getting my crossovers into the CAD program for the PCB manufacturer. @Chimike saved the day back in the BCIII days by sorting out the CAD drawings for the kit-cab build and generously worked on the drawings for my new 10" cab - including building me a prototype! @EBS_freakprovided some great marketing advice along the way and helped with the copy for the website. @funklebuilt the very first kit cab and was generous enough to test-drive and critique an early version of the 10" LFSys cab. Thank you all - and thanks for the good wishes.😊

What a fantastic day! Great organisation by @scrumpymike and excellent lunch that everyone has come to expect. I enoyed listening to @fiatcoupe432 on the six string bass and @TheRev on double bass. Thanks to @Phil Starr for a fascinating cab shootout and @Chienmortbb for his free amp measuring service. The lovely atmosphere at these SW bashes makes them a pleasure to attend. The high spot for me was when @Pea Turgh's son - who has been playing bass for six months by borrowing his dad's bass - won the P.Bass in the raffle.

I'm bringing the prototype of the 10" system to the Bash. So you'll be able to try it out for yourself.

As @Chienmortbbsays, the new cabs are a further development of the original design I published on Basschat. To say 'thanks' to bass players like @basstonewho bought the kits, I'll be make the components (horn and crossover) available at cost to upgrade the technical performance of the BCIII. The upgrade will require a very small amount of jigsawing and the use of a screwdriver, but that's it. For obvious reasons (i.e. this is now a commercial design), I can only supply these components to Basschat members who bought the kit. I'll make an announcement on the Diary thread next week. See you all on Sunday!

Hohmage?🤥