stevie

I thought I'd just look up the figures for the sake of clarity. The BB2 measures 56 x 45 x 37cm. The Goodwood measures 52 x 36 x 30cm. Calculating a volume from these dimensions gives us 93,249cc for the BB2 and 56,160cc for the Goodwood. So, the Goodwood is almost half the size of the BB2 - not practically the same size. The weight difference is 4kg. That might not seem much but it means that the Goodwood is less than two-thirds the weight of the BB2. You'll definitely notice it.

100 litres is a bit on the large side, but the Celestion Pulse tens will work OK in that volume. They also have non-rising mids. Asking Ashdown, as @Lozz196 suggests, isn't a bad idea, as they sell replacement drivers at reasonable prices.

I agree with Phil on this. I'd never recommend having a bass cab in a corner. In this scenario, assuming the cab's 30cm from both the back and side wall, you'll get something like a 15dB boost between 40 and 100Hz, which is too much boom. I usually recommend positioning the Monaco between 15 to 30cm from the back wall to reinforce the very low frequencies (depending on taste). Lifting the cab isn't going to deal with this, as you will get cancellation, but at a higher frequency than you need. If you lift the cab 30cm, for example, and it's positioned 30cm from the back and side walls, you'll get boom plus a nasty suckout at 300Hz, which will be audible. So, you have to be careful (although the low ceiling won't have much effect on the frequency response). My advice would be to keep the cab on the floor, position it 12" from the back wall and well away from the side wall. As @Phil Starr says, put it where the guitar amp is. Then, if necessary, cut between 40 and 100Hz on your amp. Also, try not to have the cab directly behind any object that blocks the sound because that can reduce the level of higher frequencies reaching the audience. Good luck!

I've attended both the SW and the SE Bashes. The SW is in a single hall with one secondary room. The SE was in multiple, smaller rooms. For auditioning gear, the multiple rooms of the SE Bash were infinitely superior. Here, you're in a room with four to six other bassists and don't have to wait long before you can try the gear of your choice at a decent volume without clashing with someone else. Also, turning the volume up in one room doesn't affect anyone in the other rooms. Despite its many-sided wonderfulness, the SW Bash isn't always ideal for auditioning gear because of the way sound travels from one end of the room to another. If you get several people playing at the same time, it can become a bit messy. And with forty people in the room, there is always going to be a clash, no matter how considerate everyone is (which they usually are at the SW Bash). @cetera mentioned this earlier in the thread. So, if there's another room going, I'd suggest getting it. On the matter of mains sockets, @scrumpymike always reminds people to bring an extension, and that's worked well in the past.

You'll be fine with one litre.

Yes, no problem - assuming the replacement will fit, as not all 15" speakers are the same size. It's worth measuring up first.

I'll be there - with as many LFSys cabs as I can muster. There'll probably be at least one new model to try out.

The TE-1200 and LFSys Monza are a match made in heaven. As @Phil Starr says, it's the amp I use, and I arrived at it having tried a lot of different heads over the years. Because of the high power of the Trace, you have to be sensible with the volume control, but your ears will be ringing before you overload the cab.

#1 - Paul @NancyJohnson #2 - Paul #2 @prowla #3 - Martin @Merton #4 - @Wombat #5 - Andy @Wolverinebass #6 - Stevie @stevie

This is true, and one of the reasons the SE Bash worked so well.

Impressive sound. Well done.

Evaluating (or designing) a speaker cab by measuring it is infinitely more complex than micing up a cab for recording or sound reinforcement. You need a calibrated mic for a start. There's a whole battery of measurements you need to carry out using specialist software. Done properly, however, you can form a reasonably accurate idea of how a speaker will perform (although your ears will always be the final arbiter). To measure a loudspeaker, you need to place the mic in what is termed the "far field" - or between 4 and 6 feet for the Monaco or similar cab. Any closer than this and the two drivers are not fully integrated. I've found measuring on the tweeter axis to be the most useful position. To remove the impact of the room in the absence of an anechoic chamber, the test tones from the speaker have to be "gated" in software. Unfortunately, this useful technique doesn't allow measurement at low frequencies. So, the low frequency response has to be checked separately using either near-field or ground plane measurements. The two measurements are then adjusted for level and spliced together to create a full-range response. If you're a stickler, you also measure and splice the response of the port. This gives you the frequency response on axis, and you've only just started.😀

@Wolverinebass has a point. Half of the sound is coming from the bass driver and half from the horn. So, how do you mic up? I made some quick measurements on a Monaco cab with the mic pointed at the horn. The top one (black) is relatively close, maybe about 30cm. The measurement looks quite clean but there's a distinct dip between 600Hz and 2kHz, which will affect the sound - it's two octaves. This is because the mic is well off axis in relation to the bass driver. The red measurement is from about one metre. You can see that the dip caused by the bass driver has more or less filled in. However, at that distance, room effects are going to be noticable. In this measurement, you can see the change between 200 and 600Hz caused by room reflections. So, measuring at 1 metre is more accurate but the sound is likely to be affected by room reflections or other noises (instruments). The logical conclusion would be to position the mic in between both drivers, which should allow the mic to be positioned closer. I'm so used to measuring on the tweeter axis that I didn't consider it at the time, but I can take a measurement in between the drivers is anyone would like to see it. I do agree with @matybigfro, however. The design goal of the Monaco (and other LFSys speakers) is to reproduce the sound from the amp as accurately as possible. It makes a lot more sense to DI.

I'd be happy to post a link once I've tidied it up. It needs a good editing.

There's a relationship between cabinet size and sensitivity: all things being equal, a larger cab will be more sensitive than a smaller one. In my experience, the Goodwood is louder than the BF One10, but because it uses neodymium drivers, weighs about the same. I have a smaller cab in the works that is currently undergoing field testing. That could be a contender for your project, @funkle, and I could include you as one of the field testers if you like.