Bill Fitzmaurice

Drink the gin, bag the raisins. I've had back trouble for 35 years. Once it got to the point that only Vicodin gave me relief I finally did the research and found out about turmeric. It has been a life changer for me. This is what I take, not that you'd order it from the UK, but for comparison purposes: https://www.puritan.com/puritans-pride-brand-0102/tumeric-curcumin-450-mg-015419

Pelvic tilt is a symptom, not a cause. When my lower back gets inflamed I tilt, and it has nothing to do with carrying an uneven load, which I never do. It happens because when my lower back becomes inflamed it does so more on my left side than my right. That makes me lean to the right, because it hurts too much to stay straight. I've been to chiropractors, they were all quacks. None had any answer for my arthritis sourced lower back pain that regularly delivered me with crippling bouts of sciatica. Through my own research I found an effective treatment, turmeric capsules. I take two 500mg a day, every day. It's a low dose anti-inflammatory that builds up in your body to control inflammation. Thanks to it pain that used to last a week a more is now gone in a day or two, and I haven't had sciatica in seven years. It's effectiveness is increased when combined with black pepper, and you can buy capsules that contain both. I don't bother with that, as I consume black pepper with pretty much every meal. The supporting evidence can be seen in Indians, Pakistanis and Bangladeshis. They get arthritis at the same rate as everyone else, but don't suffer pain from it nearly as much. That's because they practically live on curry, which is mainly turmeric and black pepper. They also have some of the lowest death rates from Covid, because the main cause of Covid deaths is inflammation that blocks the airways.

This is an RTA of The Wailers, taken at the FOH. The spacing between the horizontal lines is 10dB. The bass drops off below 60Hz, while the content from 160Hz and up is mainly the other instruments. The vocals dominate at 1.6k-6.3k, so clearly the bass is a lot louder than the vocals.

True. While it seems to have a lot of low frequency content reggae bass isn't all that low, it's just loud. Most content is between 60 and 90 Hz. If it went much lower the Fridge wouldn't be the benchmark reggae bass cab.

Time was that bass cabs didn't go as low and loud as PA subs, but that's no longer the case. Cabs loaded with long throw high displacement woofers are just as capable. The trick is finding out which cabs are so equipped, as very few provide said information. Barefaced is one that does.

FWIW a high energy rock concert will measure 105 to 115dBC at 30 meters from the stage. Interestingly metal tends to measure no higher than other genres, because their guitar tones are highly compressed.

There's nothing wrong with mixing speaker sizes, if it's properly implemented, with separate driver chambers, drivers optimized for different pass bands and a crossover. That's SOP with PA cabs, with bass cabs not so much. That's not loud at all, so I suspect you used an 'A' weighted meter, which doesn't measure low frequencies. A 'C' weighted meter is required to measure the full spectrum.

'Seen' is the operative word. The back of the cab would have to be tight to the wall for there to be any audible effect, and that effect would be reduced low frequency output, not enhanced. However, if one sees the port is on the rear and thinks as a result that it will make a difference confirmation bias kicks in, and as a result it will be heard. 🙄

Port radiation is 360 degrees, so it doesn't matter which direction it's aiming. As for tone clarity, that's sourced in the mids and highs. Ports don't radiate mids and highs.

An isobaric configuration reduces the cabinet size required to realize a desired low frequency response. For those of you who know what T/S specs are the Vas is halved compared to one driver, and therefore so is the cabinet volume exclusive of the space taken up by the second driver. The downside is that the cone displacement exposed to the air, T/S spec Vd, is the same for the two drivers as it is for one, so maximum output is the same as with one driver, albeit from a smaller cab. Isobarics were somewhat logical decades ago, when Vas values of 600 liters weren't unusual, making cabs capable of going low really huge. Since the drivers used in the Orange have a Vas around 150 liters the size advantage gained isn't that much, and as you've found it doesn't go nearly as loud as a standard 212, by 6dB to be precise.

Not all that much in the last 15 years. The last significant tech change was to neo magnets, which allowed improvements in excursion without sacrificing sensitivity, and as a result higher output than previously possible. Most of the major alterations that neo allowed came circa 2004-2008. There have been further refinements since then, but nothing earth shaking or trouser flapping.

The BF displacement is 250cc. Markbass? Who knows? Where bass output is concerned it's just like horsepower from an engine, there's no replacement for displacement.

There are tens that can handle a lot more, but to do that they sacrifice midrange response, so they're typically used in subwoofers or designs with separate midrange drivers. On the flip side guitar tens that will go into high distortion with only ten watts are common.

The BF ten has 250cc of displacement, indicating around 7.5mm xmax, which is very respectable. I don't see it handling less than 225w. The TE driver is an unknown commodity. It supposedly uses an Eminence Neo Ten, but they make at least four different varieties, and that doesn't count OEM variants.

They're just examples of how far apart drivers can be in their mechanical capability, which is defined by xmax. By no means are these differences rare. One of the most ubiquitous drivers is the Eminence Beta 10, and OEM versions of it. Orange uses it in their OBC 410. It reaches xmax at 40w at 80Hz, where the output demand for electric bass is at its highest.

When you have one driver that can only take 50 watts before reaching its mechanical limit and another that can take 500 watts before reaching its mechanical limit you don't need a scientific background to see that it's a bad pairing. It's not about being correct, it's about being logical.

Don't mix different cabs. If they're not identical, most especially if the drivers aren't identical, you're creating a weak link in the chain scenario.

Divest that notion. It's the rare cab that can make use of more than half its rated thermal input power before running out of the mechanical ability to use it, so the oft mentioned quest of 'getting all the watts out of my amp' is right up there with the search for the Holy Grail or an honest politician of things not worth the effort.

Cabs don't hiss, or create any other noise. They will reproduce hiss and/or noise present in the signal chain, which starts with the pickups and ends at the amp output jacks.

What you'll end up with is a blown 4 ohm resistor. If you must use a second cab make it identical to what you have now. If your amp won't handle a 2 ohm load you'll need a break out box to series wire them.

That wouldn't tell you which wire was which. If anything the white wire is probably chassis ground, assuming there is a chassis ground. Being an older amp it most likely has a chassis ground, but that's not the case with many micro amps. Quite right.

Discussing driver size is like hitting yourself upside the head with a hammer. It feels really good when you stop. 😉

So 2022 starts off with deja vu, and not in a good way. Getting sucked in this time I am not. 🙄

Anything Marshall. What with the pandemic lots of gear has made its way into pawn shops and onto EBay, so prices should be down. For instance: https://www.ebay.co.uk/itm/255281994107?hash=item3b6ffe197b:g:aGUAAOSwNZ9humOJ

That. While the tops need to go to the left and right front the subs can be stuck out of the way, because on the one hand their output pattern is omnidirectional, while on the other not directionally locatable.