stevie

[quote name='Mr. Foxen' post='1315830' date='Jul 25 2011, 03:31 PM']It has speakers crossfired and pointing upward. Not like Fenders, but retaining the width requirement to fit amplifiers. Fender ha the option of making amps that fit, and chose not to.[/quote] Stands that raise and tilt guitar speakers have been available certainly since the 1960s. I imagine Fender offered them; Vox certainly did. Angled cabs have also been available since the 1960s. What difference do you think crossfiring drivers make?

[quote name='EdwardHimself' post='1315485' date='Jul 25 2011, 10:33 AM']He can just stick it on it's side.[/quote] He'd probably be tempted to stick it somewhere else. You have to take Bill's contributions on here with a pinch of salt. One of his (many) regular lines is that Leo Fender didn't know how to design speakers and that guitar drivers should be stacked vertically. But go to his site and look at the guitar cab design that he is flogging for 15 dollars.

[quote name='mart' post='1312968' date='Jul 22 2011, 04:51 PM']It does depend a lot on what your current tuning pegs are. In my case the factory-fitted ones weigh about 57g each. Hipshot say their Ultralites are 52g, making for an immense saving of, ooh, 20g across the 4 pegs. However, some folk who have fitted Ultralites say they weigh less - around 42-44g. Based on that, a set of 4 might save me 60g, i.e., near as dammit, one tuner.[/quote] Those tuners are unusually light to start with - so I get your point.

Layers of tissue are great for cone splits, but with a surround you might like to try superglue - just a minimum amount.

[quote name='mart' post='1312675' date='Jul 22 2011, 01:06 PM']That's my impression - based on the Hipshot specs, and the weight of my pegs, fitting ultralites would remove a weight equivalent to one tuning peg on my bass. So I did exactly that - I took a peg off, and saw how the balance changed. And, basically, it didn't much - it was still neck-diving badly.[/quote] From memory (I weighed them but it's a while back), the Hipshots or equivalents weigh 200 grammes and a standard set of tuners weighs 450 - 500 grammes. So taking one tuning peg off wouldn't be indicative. It completely cured the neck dive on my Yamaha. Not a cheap option, but it also reduces the overall weight of your bass and certainly beats hanging a hammer on your strap. :-)

Actually, that's really not a bad idea. If you used a mat the same colour as your strap it probably wouldn't even be noticeable.

[quote name='BigRedX' post='1312562' date='Jul 22 2011, 11:51 AM']1. [url="http://store.hipshotproducts.com/cart.php?m=product_list&c=5"]Hipshot make Ultralite versions of the clover key machine heads[/url] fit those.[/quote] This is by far the most effective solution IMO. You have about half a kilogram hanging off the end of your headstock at the moment.

If you're saying you don't really know what you're doing, I'd leave it. You'll need the right sized drill bit and preferably a pillar drill if you're going to attempt it. I can understand your reluctance to use a jack in, but the binding posts will give you an excellent connection. Just use those and catch up on the gardening or decorating or something. :-)

But isn't Ashdown renowned for its wonderful after-sales service?

[quote name='Phil Starr' post='1307456' date='Jul 18 2011, 09:20 AM']I love these old cab designs, I don't think the designers knew themselves how they worked half the time. Reading the article in the link about adding weighs to the tone arm to extract more subsonics and needing to protect the room from the speaker reminds me of some of the loony articles more recently written about cables in hi-fi systems.[/quote] The fact that the design was published in Hi-Fi Answers speaks volumes.

Yes, there is a point where it ceases to be a port and it just becomes a gap. The cabinet then changes from a reflex to a dipole. If you blow across the neck of a bottle you'll get a sound, but if you try it with a jam jar you get nothing.

[quote name='Bill Fitzmaurice' post='1306659' date='Jul 17 2011, 01:45 PM']Exactly. All the parts are the same as a standard bass reflex, they're just rearranged. It would be easier to visualize as a bass reflex with the driver mounted in the usual fashion, but that's what one's imagination is for. Now if one has no imagination... [/quote] It doesn't look like a reflex cab no matter where you stick the driver. There is no Vb. The resonator chamber isn't loading the driver as it would in a normal reflex cab, because it's separated from the driver by a hole. Take away the resonator chamber and what you've got an arrangement that is closer to a transmission line than anything else. Not only that, but according to the patent, the design is flat to 7Hz using a 15" driver without any special characteristics. I'd like to see that in WinISD.

[quote name='alexclaber' post='1306489' date='Jul 17 2011, 11:02 AM']Stevei, tsn't a reflex cab a Helmholtz resonator? Though I see your point, you're suggesting that the cab works by solely exciting the resonant system of the two masses of air in the ports vibrating against the spring that is the volume of air in the enclosure divided by the area of the port:enclosure opening. But what's happening with the woofer backwave, why wouldn't that act like the frontwave from a woofer in a normal ported design?[/quote] A reflex cab contains a Helmholtz resonator, which is the vent, but a reflex system is more than just the vent. This design seems to rely solely on the vent to produce sound - just like blowing over a bottle. The contribution from the rear of the driver would be what you would expect from a driver in free air (or from the air blowing over a bottle)- practically nothing. I think the only reason the driver is not boxed in is because it would raise its resonant frequency. However, if you imagine this system with the driver boxed in, it starts to look very much like a bandpass system.

[quote name='Bill Fitzmaurice' post='1305759' date='Jul 16 2011, 01:42 PM']It's a bass reflex cab, nothing special or unusual except for the external driver mounting, and that serves no purpose, it could be inside with the same result.[/quote] It's not a reflex cab. It's a Helmholz resonator - it more or less says so on the drawing. It has more in common with a classical guitar than a ported cabinet.

I wouldn't call that B stock. It's plain faulty and you'd be justified in asking for your money back. You might be lucky, but you'll certainly never be able to rely on it.

[quote name='Musicman20' post='1289722' date='Jul 1 2011, 11:26 PM']I think I'll bow out and wait for the Bass Gear Magazine writeup. If you want to void the warranty, go down to 2.6 (?) or 2 ohms with non TC cabs. There is a vast library of info on talkbass about it.[/quote] Please don't think I'm having a go at you, Musicman, but all of the discussion on Talkbass (which I haven't read) would have been totally unnecessary if the manufacturer had provided proper specs. That's my beef. And we shouldn't have to wait for a magazine review to confirm a key product specification. I wonder if anyone has actually asked TC straight out what the score is.

I almost forgot - could you use a midi file of this? You'd have to message me your email address, as midi files won't post on here.

I stand corrected

[quote name='alexclaber' post='1289462' date='Jul 1 2011, 07:34 PM']If anyone's interested I can probably get a whole bunch of plots next week and we can see if there's anything special about the RS cabs.[/quote] That would be very interesting, yes.

[quote name='Musicman20' post='1289459' date='Jul 1 2011, 07:25 PM']Err, it is apparently. They don't know the exact ohmage of other peoples cabinets. Tom from Bass Gear magazine stated they have tested them, and the TC cabs are rated slightly higher in actual specs, so they know it will be safe.[/quote] They know as much about the impedance of other people's cabinets as any other amplifier manufacturer. It's not a problem for anybody else - they just state a minimum impedance and that's it. It says 8 ohms on the back of the TC cabinets. It says minimum 4 ohms on the back of the amps. They can't both be true. Which one is wrong? Their cabinets look quite good value to me. They shouldn't need to resort to these shenanigans to flog them. Just give us the facts and we'll make our own minds up.

I think the original was a Motown song, wasn't it? Your singer probably wants to be Michael Buble, who does an amazing version. :-)

[quote name='Musicman20' post='1251765' date='May 31 2011, 04:53 PM']Its because TC know the exact impedance of their cabinets, whereas they dont for other manufacturers.[/quote] Errr, no it's not. TC are withholding information from you to prevent you from making an informed decision. That way, you are more likely to buy their cabs to go with their amp. The same technique is used by the the utility companies to prevent you from switching suppliers. It's not very ethical, but there you go.

[quote name='Bill Fitzmaurice' post='1286571' date='Jun 29 2011, 04:08 PM']And Eminence didn't get to be the #1 driver manufacturer in the world by producing crap.[/quote] Just because you're the world's no. 1 manufacturer doesn't mean you don't produce crap. There isn't a natural relationship between size and quality. Look at General Motors.