JBL VRX boxes - mounting variables

[Brian]

...wheels would just get in the way and are thus an add-on by users rather than JBL....

 

 

They do indeed appear to be an option.

[kerry davies]

Hmmm? But those fixings are on the back not the base and, looking again at the earlier photos, the subs are indeed sitting on dollies.

 

More confused than ever now.

[DrV]

Hmmm? But those fixings are on the back not the base and, looking again at the earlier photos, the subs are indeed sitting on dollies.

 

More confused than ever now.

Isn't it the same principle as the HK units which have wheels on the back for moving them around and you tip them over to use them.

[paulears]

The problem I'm trying to solve is van space. putting the sub with two tops attached onto a flight case split at the bottom would fit better, and I couold load it on my ownm, and then push the box to the right place, remove the case top and plug two cables in. No lifting. If I was going to add the pole, I'd lift off the two tops and stick them on the pole. If they were going to fly would be the only time the sub would come out of the tray to orient the stack upside down. Sticking on the castors to the rear of the cab doesn't work with the van space as I'd then need a couple of cases for the tops, and these would need lifting onto another case, and I don't think my back would let me do it on my own.

 

Tha attraction of using the system on the case tray is appealing for it's simplicity and unless things have to be lifted off the ground, I don't need two people.

[david.elsbury]

For stuff like that I would consider chocking the wheels with a sandbag each side

[Turbo Guy]

We've used these units before on the Turbosound Berlin tops (same fitting as VRX) from the Russian Turbosound/JBL distributor

 

[paulears]

damn! They're cheaper than the JBLs I got a good deal on too! I totally missed the turbo sound offering - but for more, I'll look at those. They seem to have two HF drivers, not three? I like those angle plates - really neat design.

[Turbo Guy]

damn! They're cheaper than the JBLs I got a good deal on too! I totally missed the turbo sound offering - but for more, I'll look at those. They seem to have two HF drivers, not three? I like those angle plates - really neat design.

 

Indeed.... plus a 10 year warranty on Turbo ;o)

 

Yes 2 x HF and the Dendretic Waveguide....

 

See you're in Lowestoft... Richard at Sound4Pro Audio in Ipswich has a full Berlin rig if you ever want a listen

[paulears]

I totally missed these speakers - especially annoying as I have quite a few Turbo 2x12" monitors and rather like them. Kicking myself now. Handy to know though! The tops are probably not wise to mix with the 3 horn JBLs, but if I need more subs, the Turbosounds would work well, and I've got an M32 and 2 x X32s so they would have worked rather handily - but never mind.

[themadhippy]

come on paul, send them back,get the refund and buy the inspire optima 5's you realy want.2 rows in the van for 12 tops, 4 subs and amp rack.

[paulears]

We've got a thriving wind farm industry where I live and we have a couple of specialist fabrication companies who make all kinds of one-offs for the projects offshore. I sent some photographs and a dimensioned drawing of the array frames, asking if they'd be able to give me a price to make a couple up, but emphasising they'd need to be tested and certificated to keep the venues they'd be used in happy. They asked what weight, and he was a tad confused about the design of the official frame that has detachable side tubes. A 10mm thickness centre span with short pin fixed square tube to the drop position. The JBL deployment specs were quite generous compared to the Turbosund specs, which he found were much more modest in stated capacity which the materials easily coped with at a high safety factor. JVC had a larger quantity of boxes able to be lifted on a virtually identical frame.

 

Turbosound have a WLL of 100Kg, while JBL are happy with almost half again. Both ratings are well below the limits of the material - with considerable derating. The fabricator asked what load limit I was thinking of, test wise. My load is 88Kg, or 112Kg with an extra box - he offered to make me a frame, label it and print me a load certificate, like they do for the offshore industry for ......... £50. The only thing I have to do is paint it, as it will be steel, and need protection.

[Turbo Guy]

We've got a thriving wind farm industry where I live and we have a couple of specialist fabrication companies who make all kinds of one-offs for the projects offshore. I sent some photographs and a dimensioned drawing of the array frames, asking if they'd be able to give me a price to make a couple up, but emphasising they'd need to be tested and certificated to keep the venues they'd be used in happy. They asked what weight, and he was a tad confused about the design of the official frame that has detachable side tubes. A 10mm thickness centre spin with short pin fixed square tube to the drop position. The JBL deployment specs were quite generous compared to the Turbosund specs, which he found were much more modest in stated capacity which the materials easily coped with at a high safety factor. JVC had a larger quantity of boxes able to be lifted on a virtually identical frame.

 

Turbosound have a WLL of 100Kg, while JBL are happy with almost half again. Both ratings are well below the limits of the material - with considerable derating. The fabricator asked what load limit I was thinking of, test wise. My load is 88Kg, or 112Kg with an extra box - he offered to make me a frame, label it and print me a load certificate, like they do for the offshore industry for ......... £50. The only thing I have to do is paint it, as it will be steel, and need protection.

 

Cheers for the information Paul...... Good to know this!

[paulears]

He was very much of the opinion the Turbosound rig was much stronger than the spec indicated - which is good when people abuse them!

[Turbo Guy]

He was very much of the opinion the Turbosound rig was much stronger than the spec indicated - which is good when people abuse them!

 

TBH it is.... the problem is that due to the the fact we had Paul Bauman (Ex JBL) who bought the design in house..... it's just seen as a VRX copy, which it isn't. It's a Clair Bros design in essence

[Dave m]

Rather than paint, can I suggest Powder Coat?It can be bloody hard and quite cheap