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Red Spade Audio

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About Red Spade Audio

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    Australia
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    Melbourne
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    Paul

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  1. Bargain at that price! Andrew often used a PAudio driver which had an unusual design. It had a motor with a single magnet and dual spider and voice coil assemblies, one on either side of the magnet, allowing a more symmetrical stroke. Normally those spikes on the bottom are screw in, meaning they could be removed for packing. BTW ... if this has either a Shiva or the PAudio driver, then it's more on par with SVS SB2000.
  2. There's a few ways you could do this but as a general rule I'd suggest high level inputs are a last resort. The main reason is that this excludes the possibility of using any kind of EQ or correction, either built in or external. The simplest solution is to run a line level to the sub and plug the port on your mains. This reduces bass extension by an octave, meaning that speakers with 40 Hz extension will now roll off with a 2nd order at around 80 Hz. You then adjust the crossover on the sub to match. Where a sub provides high or low level outputs, they will typically i
  3. Autex make their own version that looks identical on paper but in reality they are not the same. Their AAB has a texture on the surface (not as appealing in my opinion), they are slightly thicker and a little lower in density. They also tend to flex more. This means it's much more difficult to get neat cuts. When you place an order, make sure they are sending the correct version. Nothing worse than having HD panels show up when you ordered XHD. It happens. I generally recommend the black XHD 50mm as it's the most universal. Many people are tempted by the thicker panels
  4. SVS SB1000 is probably what I would consider a minimum standard although the next model up is significantly cleaner (SB2000). Sometimes some of the older models come up in the classifieds. I've integrated a lot of these and they are a breeze to work with. Sorry, I know this is not helping with your budget at all.
  5. You may find this interesting: https://redspade-audio.blogspot.com/2020/09/the-surprising-reason-why-you-might.html The issue I find with subs around this price point is that they usually aren't very clean, even at modest levels. Is DIY an option you would consider? If so, I'd suggest a 12" Peerless XLS in a sealed box is a good option. That's the only kind of solution I would consider on a <$1k budget for a studio.
  6. As Al has eluded and mentioned at other times, adding a second sub is not always the solution many expect. Doubling up on identical subs adds +6 dB. 3 dB increase in sensitivity 3 dB increase due to twice the total power This only applies if the second sub is very close, so that both subs act as one larger sub. Beat me to it! There is no easy answer to the question you are asking based on the info we have on hand. In my experience, it's very difficult to make suggestions based on this kind of description. Mainly because we don't know what the r
  7. "Darling, I promise you, there always was a giant return air duct in this corner! What do you think? That I just added a useless air duct in the corner for no good reason?!" If the matter goes to the high court of interior design, I had nothing to do with it! There is a mix of things you can look for, including bottom end extension, avoiding major dips, flattest overall response, highest output. The emphasis changes as you change the number of subs and also the number of listening positions you want to optimise. For one sub and one seat, the answer is often relatively straightfo
  8. There's always some risk of localisation with a single sub at the back of the room. Simply having a 4th order crossover at 80 Hz won't necessarily avoid the problem. Different subs vary in their tendency to be localised and different listeners vary in their sensitivity. I've ran demos like this countless times and a surprising number of people don't notice a problem, where I'd call it distracting. So there is always some degree of uncertainty. The best solution that I've found to the localisation issue is to have at least one front sub and to limit the rear sub to about 60 Hz. Ofte
  9. I'd call 140 - 400Hz low midrange. Others may define this differently but I'd class midbass as approximately 40 - 60 Hz. I came up with the 120 dB midbass chest thump threshold based on a particular system that I designed and set up for a night club client. It was a 4 way horn loaded system. I found that once the level on the dance floor reached 120 dB around 45 - 55 Hz, you could feel that chest pounding sensation. The mids and highs were lower in level. Of course, using different music or even a system with a different response, you may find a very different result. T
  10. Keep in mind that if you use high level inputs, this eliminates the chance of using EQ, either from your AVR or an external device. For this reason I'd call it the "last resort" option for systems that have no other way. In the vast majority of systems, it's a big compromise.
  11. When you reach a midbass level of 120 dB, I'd call that the "chest thump threshold." That's the easy part. There are too many variables to give a definitive answer in terms of power/m3. The room in particular adds so much uncertainty. If someone wanted to actually design a system to reach a specific target, it would take a process with several steps. It involves things like testing sub positions and measuring the actual response in the listening position for a known reference. Armed with the right data, I can then work backwards to determine how to reach the
  12. I've seen this many times in systems that I've tested, it's quite common. I've also seen many cases where the setup wasn't lacking in this aspect but they hadn't dialed in a suitable room curve. I've seen many systems where they actually have more actual in-room bass extension than they realised, yet they didn't have the impression of enough extension. Quite often there is a big difference between what people have and what they think they have. If you are talking about that live concert experience, in which you feel the kick drum thump in your chest, this is an experience very f
  13. Enclosure has been picked up ... hope to see some photos!
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