nekomatic

Nice carpet work! Looks sealed, not ported? Do you remember if you did any modelling of the response?

Eddi Reader at the Stoller Hall in Manchester. Boo Hewerdine on guitar, John Douglas uku (I think!) and guitar, Alan Kelly accordion, Kevin McGuire db. Great show, included some Robert Burns, some Fairground Attraction (yes including that one) but brought something new to each of them, and some other stuff. Definite recommend.

moneysavingexpert says you may be able to get money back through a chargeback claim if you paid a company by debit card (or credit card) and they have gone bust.

The way to find out would be to model the response using software like WinISD. You need to know the internal volume of the cabinet and the length and area of the ports, plus the parameters of the driver you want to use which should in the manufacturer's datasheet. I'm not experienced enough to look at the output of the modelling and tell you how it will sound, but if someone like @Phil Starr has spare time they might be able to run it and give a quick opinion. The thing is, as @bremen says, the "600W" driver rating is only half the story, basically being how much power you can put in to the driver under standard measurement conditions before something melts. The other half of the story is how far the cone can move before something breaks, and the power it takes to cause that is dependent on the enclosure as well as the speaker because the air in the enclosure affects how the speaker cone moves. To get more volume out of the same size driver in the same enclosure you are going to need the cone to move further, and it might be that the "600W" driver will hit its excursion limit at the same or even lower volume compared to the "250W" driver. If the higher rated driver is less sensitive it might even take more power to reach a lower maximum volume.

I think nowadays it’s this 😉

Cool, was that a quartet lineup or just the duo? They’re in Manchester tonight and I contemplated going but I think it’s just Adam Neely and the drummer, and, well, I didn’t.

Unless the cabinet is internally divided into a separate airtight compartment for each speaker then this would effectively double the cabinet volume seen by the remaining speaker, wouldn’t it?

That’s a name I haven’t heard in a while - great to hear she’s still gigging.

Eddi Reader (dunno if she'll have a band or it's just her, but it's not the Fairground Attraction reunion afaik) at the Stoller Hall, 6th April. Also lots I plan to see in Manchester Jazz Festival in May, but the one I jumped straight on a ticket for is Small Print (presumably so named because it's a smaller version of The Printmakers) which is Norma Winstone, Nikki Iles, Mike Walker and Steve Watts, on the 24th. I'm not sure it's possible to describe how good I expect this to be.

There were three bass players, plus the guy in the house band, tonight. Three! Felt like I hardly got a look in.

As a firm believer that more things should be painted hot pink, let me wish you the best of success with your project.

Circular recessed cabinet handle as seen in the Basschat 112 design, unused, full spec here: https://www.bluearan.co.uk/index.php?id=ADH34062 I bought this for a cabinet project but found it wasn't quite suitable, so someone else might as well have it - free to collect from Stockport (or could arrange a handover in central Manchester) or will post it at cost.

In something of a contrast to the previous night, Joseph and the Amazing Technicolor Dreamcoat at Manchester Opera House, because a mate of mrs nekomatic's was playing French horn in the pit band and got us cheap (relatively) tickets. I affect not to be a fan of musicals but it was proper old-fashioned entertainment and everyone on stage was clearly very good at what they did and working very hard at it, so had to concede that I enjoyed it very much. Pit band was a 9-piece although three of those were keyboards, one Mat Elliot on bass who also had plenty to do all night and was clearly very good at it.

Espen Eriksen Trio with Andy Sheppard. I didn’t know the trio before, but was a big fan of Sheppard’s mainly via his work with Carla Bley and Steve Swallow. Bit worried after the first couple of tunes that it was all going to be a bit… nice, as in predictable and safe, but they started to stretch out a bit after that and ended up very good indeed, Lars Tormod Jenset on bass delivering his share of that.

Do you have a link to the circuit diagram? I searched for one and found this which shows what looks to be a thermistor as it’s labelled with ‘cold’ and ‘hot’ resistance values. Is that performing some sort of soft start function perhaps?

I clearly know much less about Cameo than I thought because to me that’s very like Defunkt. Which is a good thing, obviously.

Andy Sheppard with the Espen Eriksen Trio on Weds 5th…

I am definitely not one of life’s natural dancers but some years ago I went along to a salsa class for something to do and discovered it is quite possible to learn.

The good thing about taking this cab to a jam was that I not only got to hear myself play through it - which was fine - but also got to sit in the room while another jammer played his Precision through it and then the house band bassist Gavin played first his double bass and then my Jazz through it. And they all sounded great, but particularly the last of those which maybe shouldn't surprise as I'd set the amp up to make a sound I liked from my bass and Gavin is a much better bass player than I am. Perfectly adequate volume for a jazz band in a small-to-medium size function room and all in all doing exactly the job I built it for, which is all I could ask. Plus it weighs a very manageable 7 or 8 kg, carries nicely, and if I say so myself looks pretty decent - I'm very happy! Back at home, I did a side by side test with the 112 and I actually found it easier to get a sound I really liked out of the 1x8. It does appear to be, as Phil says, a pretty musical little speaker. Advice for potential constructors? Go for it - this was really not difficult to build. I guess I think I know a little bit about woodworking but I'm certainly no expert, and any issues I did encounter were mostly the result of pressing ahead without double checking stuff, and were fixable. The total cost is going to depend on how you want to finish it and on what tools and materials you already have or need to buy, but I'm pretty certain it'll come in a lot less than you could buy something new with equivalent specs. Do ask any questions, there are no stupid ones - I really am no woodworking expert. Thanks once again to Phil and other contributors for the design and the invaluable hints and tips I've picked up on the various cab design threads here.

I recently acquired an Eden WTX-264 which is compact but not 'micro' and while it has a fan, it's not too loud - a soft rushing sound rather than a whine. As far as I know the Phil Jones D-400, Eich T300, Tecamp Puma 300 (no longer made) and the GSS range are fanless. Some people have reported success replacing the fans in amps with quieter versions from somewhere like quietpc.co.uk, but you would need to be comfortable with opening up the amp and would need to check that the supply voltage was the same, current draw same or lower and airflow same or higher than the fan being replaced.

Cornered (this was more effort than expected, and the electric driver threatened to mash the little screw heads although I'm sure I was using the right size bit, so it was a manual job): Speaker mounted: I was not correct that self-tapping screws into the baffle alone would be fine; at least one of them has pulled its thread out of the wood. I'll have to live with it today but will come back to fix this, probably with T-nuts seeing as I have them. Grille attached, using a nylon washer under each screw to protect the grille from scratches. A couple of the blocks started to split, probably from the combo of not doing a proper pilot hole (I did after that one), tightening too quickly in one go, and trying to put the screw too close to the end of the block, but I reckon I can fix this by forcing a little wood glue into the split while the screw is in then removing the screw and letting the glue set. And subject to those snags, it's done. Obligatory pose with the Eden and the bass: How does it sound? Well, I could tell you more based on noodling about on the landing but since I'm taking it out to a jam tonight, why don't I report back after I've tested it in the field? However I do believe I'm getting ready take back what I said about refinement…

If this is confusing (to anyone, not ezbass in particular) I do recommend going back to this post on the first page and forgetting about the ‘it’s the scale of C but starting on a D’ stuff.

Double pole switches makes life easier. You can just wire a momentary push button in parallel with the foot switch contacts in your circuit, then pressing the push button will change the LED state but not the amp.

I’m always the optimist 😁 I went for the diagonal braces in the end. We’ve Got A Mitre Box And We’re Gonna Use It I’ll have to wait until the cab is reassembled to find out how much use they are but they barely add any weight so can’t really do much harm. Thank you for the further thoughts on the other ways though, which I’ll come back to if I think more is needed. A bit more painting action was needed (inspection in daylight revealed) so it’ll go together tomorrow morning probably.

You’d want to connect D to Qbar I think. Also if your footswitch is only a single-pole switch with one set of contacts, you can’t necessarily just connect this circuit across them without first checking the voltage and polarity that the amp puts across the open switch.