Chienmortbb

Thanks for the bump. Apart from ilness and the aforementioned personal matters, I have just joined a new band and am frantically learning new songs. I hope to have a prototype at the Big Fat South West Bass Bash bua as that is one week before our first gig it might slip.

The crossover point is a good one. Limiting the 15 to low frquencies would improve matters a lot and get round the 2x10s farting out before the 15. @steviecould probably elaborate.

Looks like a few BC112 speakers will be there as I will be bringing mine plus my Bugera Mosfet amp and either my Fender Aerodyne and/or my Greg Bennett semi acoustic bass ( might sell if the offers are right). I may even bring my homebrew 500 watt amp designed in conjunction with passinwind if finished.

Don't take any notice of launch pricing the market will decide and I suspec t AShdown have priced them accordingly.

The Palmer range have some different sizes and are excellent.

True. For fixed installations Gold is worthwhile for touring/gigging it does nothing but does not hurt.

I have one of those. It slices hard boiled eggs nicely.

What standoffs were used?

Thanks that helps.

How did yhou find the etch primer? The spray one I used was not tghat good and I need to startt again on the grilee.

I probably should have said it is not ideal to run two full range cabinets and Stevie aims for a no compromise approach. Phil has explained better than I could, but if we ignore the issues Phil mentions, there are real benefits for the DIY builder. These are weight, not using the compression driver and horn saves about 0.5Kg or over one pound weight. Secondly, cost. A good comp driver and horn with cost £70+. Two commercial cabinets may sound great but as we are building ourselves, the cost and weight saving make it more than worthwhile,

We tried the Mk 3 on top of my MK2. The MK2 had the horn stuffed with a micro fibre cloth and so it was effectively a single 12 with an 2 kHz LPF. The results were very encouraging although Stevie thinks 800Hz would be a better. The sound was not noticeably louder and there was no excessive LF/Bass but the lower cabinet seemed to reinforce the sound of the MK3.

Richard is correct. A lower cabinet with a limited top end will help, two full range cabinets is not such a good idea and Stevie has hinted at an idea to run a lower cabinet with a limited bandwidth. However I know he has been busy lately. I think that putting this cabinet on top of your "MK1" may work but it may be a bit middy. Keep an eye o this thread.

Not possible I am afraid. Class D amps with switching power supplies already achieve north of 80% efficiency so you can only achieve probably an extra 20% increase in power from a given mechanical envelope.

They have one of those at one of our local rehearsal rooms. No surprise that it is the cheapest of the three local ones.

The 300W one will be 150ish into 8ohms and a little underpowered for me.

I think the standard labelling for power consumption on ampilfiers is what they consume when operating at a set percentage of output that's supposed to represent normal use. For example, the back of my GK MB200 says "Full power 240w, average power 48.6W" next to the power socket. I'd presume that your Roland quotes the lower figure. Still even considering that, the Behringer's consumption seems small for it's advertised output. Quote power consumption at 1/8 power. This is because speech and music are not continuous and 12.5% is considered the normal power draw. Instrument amplification should be rated much higher, especially bass as the power drawn for lower frequencies is higher.

I'm not 100% sure that the Wharfedales I tried were Class D, but even Class D generates heat under load. Just not as much as other classes of amp. Class D does generate some heat. The power supply and amp are usually 90%+ efficiency so an overall efficiency around 80% for a 500W amp, that still means 100 watts of heat. The irony is that the heat hardly decreases with power as it is the control and aux power supplies that create the heat and they are working all the time and only slightly cooler , even at 1watt output. Of course with Class A/B and a linear power supply, the heat generated will be 3 or more times greater for the same power output.

Ah the Linear 30. Without it there would have been no British rock n Roll.. The guitarist in one of my early bands played a cheap Strat t copy into a Linear 30 then into a cabinet made from an old wardrobe. He had a tone that Gary Moore would have killed for. It really is all in the fingers.

PM payment details to me Mike and I will pay asap

I too was tempted as the T model is now under £200 but I have a £300+ car service on Tuesday.

It’s good that the fan only comes on when needed.

Tuner with a mute?

I was just going to say that I like d the look of the CTS although I don’t rattle their normal pots When I read the “ duff” part.

I quite agree it should be capable of 100+ watts but my point still stands. In the 60s, certainly many US manufacturers used PEAK ratings rather than RMS.