martinbass7750

[quote name='sdguitars' post='394308' date='Jan 29 2009, 07:45 AM']Thanks guys....the requirement from the music service is to have acoustic only basses to loan to students for school lessons. They don't want the kids faffing around with the electrics, hence the requrement for acoustic only. My own personal feeling is they're going to have to like it and lump it.... cost of bespoke luthiers is well out of the range of Council funds! Thanks for your answers guys - much appreciated.[/quote] You could always remove the pre-amp part of the electrics

[quote name='tonybassplayer' post='394314' date='Jan 29 2009, 08:09 AM']Hi The one thing I never seem to have got my head round is ohms. Can someone explain how the matching should work in simple terms when an amp is matched to one, two or even four ( in the case of pa ) cabs and probably even more important how a mis matching could cause damage ( ie what to avoid that will damage and what it is not ideal but workable ) Huge thanks and looking forward to being enlightened later today Tony[/quote] Hi Tony, An amplifier is designed to run into a minimum load of say 4 ohms. If you take the load below this you will draw excessive current from the output stage and cause damage. (current = voltage / resistance in ohms) As you add a speaker cab in parallel the value of the load resistance is reduced. e.g. 2 x 16 ohm cabs = 8 ohm load ohm load, 4 x 16 ohm cabs = 4 ohm load. Hope that helps. Cheers Martin

GavC just bought my Lakland 55-01 - nice chap, turned up as arranged (after a 2.5 hour drive) and easy to deal with.

[quote name='silverfoxnik' post='373569' date='Jan 7 2009, 10:01 PM']I had a similar problem when I has a KSD 5 string which was quite a bit longer than a usual 35" scale bass. But it did fit in a Tribal Planet case that I bought, so maybe that might work for you?[/quote] Hi Nik, long time no speak, hope all is well with you. Tribal Planet went bust a while ago, I was trying to buy one of their bags. Don't know if they have started up again. Cheers Martin

have you looked at gator?

[quote name='paddy mcbride' post='354832' date='Dec 15 2008, 10:14 AM']Well guys it worked. I bought an IP rated junction box and 2No. compression IP rated glands (so no beer or whatever can enter the box), a 15A terminal block and a single gang extension lead. I cut the lead quite near the socket end and joined it together again with the terminal block and thermistor in place as shown on the diagram [b]bremen[/b] gave us all enclosed within the IP rated box. It worked a treat. Simple, relatively cheap and hopefully will continue to work over time.....i can't see why not. Thanks for all your input. Cheers Paddy[/quote] Glad it worked - we all knew it would really!

[quote name='bremen' post='349656' date='Dec 9 2008, 01:08 PM']Too hot to touch, however hot that is![/quote] If you read the application note on the website I pointed to earlier, it recommends you use high temperature solder and keep the device well away from plastic components. So I wouldn't mount it inside a plastic extension lead, if that's what you have in mind.

[quote name='bremen' post='349436' date='Dec 9 2008, 10:03 AM']Farnell do them: [url="http://uk.farnell.com/rhopoint/sg110/thermistor-ntc-surge-gard/dp/1186611"]http://uk.farnell.com/rhopoint/sg110/therm...gard/dp/1186611[/url][/quote] indeed they do (as do R-S) but I'm not sure they will supply unless you have an account. CPC probably will supply though (part of Farnell, but more for the general public)

[quote name='bremen' post='349420' date='Dec 9 2008, 09:44 AM']I use these in my amps. It shouldn't be difficult to make an inline unit in an ABS box with an IEC lead on the output and a mains lead on the input. If anyone's interested I can specify the parts from Maplin or similar and draw a schematic of how to wire it all up. edit: or buy the one Martin found :-)[/quote] The one I found is quite expensive, personally I'd go for the surge guard route (I've used them successfully in similar applications before) I don't think Maplin sell surge guards any more. I reckon there's a market here for a surge guard in a box with an IEC in and out. Cheers Martin

Hi Paddy, A power conditioner is designed to stop surges in the mains from damaging your kit, I don't believe they will do what you want. I've just done a quick search and come up with this - this should do the trick for you. [url="http://www.canford.co.uk/ProductResources/ig/1916.pdf"]http://www.canford.co.uk/ProductResources/ig/1916.pdf[/url] It's probably the surge guard component in a nice box! Cheers Martin [quote name='paddy mcbride' post='349358' date='Dec 9 2008, 08:52 AM']Thank you. I don not have experience with electronics so won't be able to install that myself. Would a power conditioner help? I know that it only has a 10A breaker. That would trip and i could reset it.....then on powering up again it won't trip the second time. Am i right? I am nervous to have any mods done to the circuitry of the amp unless it is definitely the best solution.[/quote]

aah yes, the phil jones bass surround system

Hi Paddy, Your problem could be high earth leakage - worth getting it checked by an electrician. Or it could just be that on switch on there is a surge which takes the trip out. This can usually be resolved by adding a device to limit the inrush, but it has to be in series with the mains Line connection. Here is a component that will achieve what you want, [url="http://www.rhopointcomponents.com/products.asp?recnumber=10"]http://www.rhopointcomponents.com/products.asp?recnumber=10[/url] but you need to know what you are doing to add it safely. The best way is to have it connected inside your amp in the mains input connection. You also need to choose the correct device to match the running current of your amp. Not sure if you can buy a mains adapter with a SurgeGuard in, but it would be worth searching around on the net. The device is basically a resistor which has a high resistance when cold (which limits the inrush current) but as it warms up after switch on its resistance drops to allow the normal running current to flow. Hope that helps a bit. Cheers Martin