BillFitzmaurice.info

OK. Cool. Thank you. That's one less thing that I need to worry about.

Sorry. Yes, I want to build either 2 THT or 2 THTLP as soon as I can. I'm just trying to find time to build them. Right now I have a Cerwin Vega 15" in a custom ported cabinet, for my sub. It works great for music, and most movies, but it bottoms out with some movies. I had read on another foru...

I have been debating on whether I should use a high pass filter or a mini dsp for my subwoofer. Right now I have a single direct radiator in a ported cabinet. But eventually I want at least 2, "if not 4 folded horns. With that in mind, I shifted more towards a mini dsp 2x4. But I don't know whi...

Rickisan wrote:That there is funny I don't care who you are.

Hello... hello... hello...

where did everybody go??

Was it something I said?? Do I smell funny??

thank you. yeah, from what i've read, the resistance is dynamic based on frequency and current across a given wire of a given material. i've read a lot about resistance and reactance, but a lot about reactance is just "blah, blah, blah" to me. i've tried to understand the formulas used to ...

thank you for your input. i understand that impedance is not static, but nominal impedance gives me something to go on. and from what i understand, the nominal is closer to the least amount of resistance in the circuit. so if nominal is 8ohm, then in reality it may be somewhere between 6ohm and 16oh...

OK, lets ask it a different way: Q. How do you calculate the NOMINAL impedance of a speaker cab that uses a 2 way crossover such as the one in the SLA's? Let's see if I can do better... In the woofer's passband, it is the impedance of the woofer, as the crossover makes the tweeter disappear, simila...

so taking the 5.3ohm nominal for the tweeters and combining that with the 5.3ohm nominal for the drivers wired in series, should net a nominal impedance of 10.6ohm. or did i miss something?? You don't add the impedance of the two lines, the crossover separates their loads. ok. so what impedance wil...

so if i'm looking at this correctly, the nominal impedance for the curved sla with 6 drivers and 6 tweeters should be 10.6 ohm?? three 8ohm drivers in parallel = 1/[(1/8) + (1/8) + (1/8)] = 2.666 then 2 banks of 3 parallel drivers run in series = 2.666 + 2.666 = 5.3ohm then wiring the tweeters up th...

i'll probably just get the onkyo mic and be done with it. if i plug it in to audyssey and then set it up so i get the same readings in rew, then i should be good to go.

thanks for all the help.

oh, by the way. a disk full of build plans showed up in the mail today.

That sucks. I think Onkyo uses the same mic for several other products including their car audio stuff. I'm on the road this week but if I remember I'll post a pic of it and any identification marks over the weekend. Hopefully you'll track one down on ebay or something. I presume Onkyo have their o...

any suggestions on a decent mic as well as a decent spl meter?? I use the checkmate CM-140 SPL meter that also has audio out. I chose it because REW has the calibration files for download. It seems to work well enough for me to get the results I want. I use the mic that came with the 818 for calibr...

i'm assuming the answer will be "no", but i meant to ask if you have any issues the 818 running out of power with the sla?? Hell no! Never maxed it out. Maybe I should try but would need to wear ear plugs! I suppose it depends on your room. good to know. in 2.1 stereo, the most i've taken...