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I use a Sony CDP-CX350 300 CD and a CDP-CX450 400 CD changer. I'm not sure what the US equvilents are. They go straight to an external DAC, so I can't comment on their sound quality but they have been very reliable over 18 months. The main reason I bought them was because they're compatible...

Harry: I went past Acoustic Concepts today and he showed me a 4" flared port his neighbour is willing to sell for $A35. It is the same as Adire's product. From your original post you were doing 2 subs though, so you need 2 ports. I haven't looked for a subsonic filter yet as I haven't decided...

Harry: Glad the screen shot worked (changed it from progressive to standard jpeg). I would recommend a subsonic filter. I don't use one currently and occasionally bottom out. I will be using one with my Red Oktobers. Acoustic doesn't have flares and doesn't know of any in Australia. You may...

Harry: I changed the screenshot format, so please give it another try. The 2x748mm port length was from LspCAD. The parameters I used were: 1xShiva MKII, VC in parallel, bassreflex box of 169.9l tuned at 17Hz, no fill and 2x10cm diameter ports. I may have forgotten something, but I don't...

Harry: I ran your numbers, the screen shot is here . Basically, a 6ft^3 or 170l net volume with 2x 748mm long 100mm diameter ports.

Harry: The Adire specs are supposed to be pretty close to real world and most people use them comfortably. Seeing you can't run the sims, I'll do them in LspCAD and post a screenshot for you. I'll base them on 6ft^3 @ 17Hz using 2 4" ports.

Harry: Acoustic Concepts price is $245 PLUS GST. I know the owner personally and don't want be seen to be peddling on his behalf in the Forum. Having said that, his stock is all MkII Shiva's. I've posted a screenshot of the white paper physical specs here . Hope you can see it. Dylan

Harry: Mornington Peninsula is on the estern side of Melbourne, a fair distance from Bendigo. I still haven't decided on selling though. They are currently in an EBS sonotube and they may stay there or go into a small sealed box or I may sell? I believe you can buy new Shiva MKII's locally...

Harry: This is a bit OT, but have you got/ordered the Shiva's yet? I may have 2 MKI's for sale. I also have some 24" Sonotube. I'm on the Mornington Peninsula. I'll do my best with some answers.

I've been hanging here and at HTT for a while now in an attempt to absorb some of the knowledge floating around and have begun my own project. While not strictly DIY, this pair of Dual Tempest 453l@18Hz subs should still beat the equivalent commercial offering.

I think the K series are so popular because they are fanless, so no fan noise. I have a CE2000 driving a pair of JBL2245 based subs, but the amp is in a seperate room. If the amp was in the HT I think the fan noise would drive me mad. Otherwise I think it's a fine amp. Are you sure it can be...

Jones_Rush You can probably buy a phantom power supply, but I wouldn't know where from. A friend drew a circuit diagram of one for me on a sticky-note, so there obviously isn't a lot to it. There's input & output jacks, 2x 9v batteries and a couple of resistors and capacitors. He didn't...

I have one of these. I am yet to make up the phantom power supply so cannot comment on its performance. I will be using it with a PC based RTA like SpectraPlus. I made up some cables to do the job but someone else may know of an XLR-1/8 adaptor? Dylan