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More last won the day on August 31

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    Pittsburgh
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    BASS 'N STUFF I'm rather fond of bass, stuff too.

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  1. More

    Sub Advice

    Diy subs are almost always way cheaper or better for the same price than commercial options, and they are easy to build. But some of your goals clash: big space, bang for buck, 2 boxes, small, sealed. Bang for buck: get 32 of these and put them in 4cuft sealed boxes with a used NU6000 amp. $2100 total. Blue line https://www.amazon.com/CS1214-1000-watt-subwoofer-Discontinued-Manufacturer/dp/B003A64AW0 2 boxes: 2x B&C 21ds115-4 tuned to 25hz in 2x 48x30x16" boxes with 1 13.75x7x40in split slot port per box. Used IPR2-7500 amp and a minidsp 2x4. $2100 total. Green line I just came up with the above design for a friend that only wants 2 subs that will hug the walls and fit below a 30" shelf. 2 boxes small sealed: 2x um18 in 4cuft boxes. NX6000 dsp amp $1200 total. Red line 2 boxes small sealed cheap. 2x 12's in 2cuft boxes with a 500w plate amp $450 Black line I'd choose the blue or green options.
  2. I was using 1+ and 2+ on an ep2500, an ep4000, and 2x rmx2450's like they are supposed to be for bridge mode. The gain was all the way down on ch 2 and I didn't have an xlr plugged into the ch 2 input. I think having the gain down with no signal may have been important here. Point taken, I was exhausted and rushing to get stuff together and loaded in the trailer at 4am so I could get 2 hours sleep before having to drive. I usually take my time and triple check, but couldn't this time. Pretty sure I killed a couple of them.
  3. I put one there, and started putting stuff on the bay. Was hoping to avoid that. Oh well they can have their slice too. I'll be putting stuff up here for a bit as I get things tested to see if anyone wants it then moving it to the bay.
  4. I just realized this a "minute ago"... I brought my home system out for an event that I do once a year and in hindsight messed up . I changed out my normal sub amp setup from 2x ep4000 running bridged at 8 ohm (running 4x 4ohm loads in dual series) yes channel B was always muted/left to do bridged mode. I changed that to 4x EP4000's running one 4ohm bridged load per amp. Or so I thought. When i disassembled that rack to give an amp to a friend, I noticed the the dip switches on all 4 were configured to accept and output stereo! Not parallel inputs so that I could run one xlr to each A channel of the 4 amps from 4 channels of a dcx2496, Ugh I screwed up and didn't use the dip switches to flip phase on channel B. I had changed my 2 bridged amps dip switches to the stereo amps settings instead of making all 4 bridged amps, but wired them in proper phase red and red. I have wired like 3 things out of phase in my life.... mmmm Grrrrrrr. So my question is: What effect does using channel A's positive along with using a maximally attenuated channel B's red/hot side as the negative without sending a signal to "B" have on an amp?
  5. Finally home again. Had a great week. I'll have more stuff tested this weekend. I'm surprised I still have these amps. Any idea why? Prices?
  6. I'm taking off for the weekend to hang out with some friends. I'll be back Tuesday. A year ago, one of them brought his "PA system" to a get together. It was a pair of OLD 15 + a horn cabs with a tear in one of the cones, and the other one had a VC rub if you turned it up. He had that hooked to a rmx850 with 1-1/2 working channels run off of a old mackie mixer that looked like it made it through the Normandy landing (barely). Yesterday, I found out that he was definitely showing up this weekend. I asked him how often he uses his "PA" ? He said he used to all the time, they were his living room speakers till the amp decided it was a mono amp and the speakers are just junk. I decided he needed an upgrade. (we're hundreds of miles apart and only see each other a couple times a year) I thought about giving him the escort 5000, but he loves LOUD dubstep. I started going through the subs and speakers last night. 4 powered ported 18s with 4cuft boxes...4 bad amps. 1 unpowered one with a 8cuft box, super crispy VC. Little box drivers wouldn't work well in the big box. UGH Then I remembered I had a Ciare 18.00sw laying around that @Funk Audio had sent me when he hooked me up with a pile of awesome drivers. (THANKS NATHAN!!!!!, told u I'd find good homes for stuff) I was planning to use it to help me learn hornresp and design a horn with it, but he can put it to use for now. I'll have him swap the driver with something more appropriate later, a pa460 looks decent w/600w. He'll probably get it back in a horn down the road. WinISD said, meh, it will kinda work, and the ciare ended up in a Peavey box that sounds like it's gonna burst at the seams when I hooked it to a IPR2-7500 and cranked it up. I kinda felt like I was parking a Porsche in front of an apartment in the ghetto, but it's what I could make work in a night with stuff I had laying around. I found a couple working Peavey PVXp 15's right out of the box. And bam, he's got a mini system. Can't wait to see the look on his face. The look on his wife's face may be even better. LMAO
  7. Here are the arrays, my 1st test box, a couple surrounds, a weed wacker, and some half full spray cans, . There's a "Pittsburgh toilet" hidden in the back too. lol I had 2 different port designs I was trying out on the mains. Both are slot ports the full height of the towers. I actually came up with the port design on the little one on the floor before I knew that slot ports were a thing, I thought I was pretty slick. LOL The left port is .75 x 6in or so, the right is .125 x .75 both are a 90hz tune. They will take a full ep4000 channel forever without breaking a sweat.
  8. I don't have enough of them, and then all the wasted inputs, and they aren't rack mountable, and all the patch cables, and... oh well. They really should have gotten their ctc spacing lower with that wall thingy, used some higher power drivers and amps. Maybe bear could have looked at what Danley is doing and taken some inspiration from that. Wouldn't have needed so many trucks. I'm sure it sounded amazing for the time tho. Thanks for reminding me, I have a pair of 8ft tall line arrays that I designed and built 6 years ago and don't use anymore. They are made to be a floor to ceiling array in a room with 8ft ceilings and use the ceiling and floor reflections constructively to make them a 24' virtual line. There are 42 of these speakers per channel wired 6s7p and ported at 90hz with ~2" ctc spacing. If anyone is interested in them let me know. They aren't shippable easily. https://www.parts-express.com/hiwave-bmr12-compact-2-full-range-square-speaker-12w-8-ohm--299-208 I have 65 of these Hiwave/Tymphany drivers leftover from that project, new in the box, along with 15 that had the frames trimmed down already to lower the ctc spacing. I think I bought 2 cases of them. Looks like Dayton copied them, and maybe didn't do as good of a job?: https://www.parts-express.com/dayton-audio-dml25-4-2-distributed-mode-loudspeaker-transducer-20w-4-ohm--295-236 Normally we model speakers in a 3D space. Full/half/quarter/eighth space, but still with a 3D expansion that drops 6db per doubling of distance. In room the line arrays have a 2D expansion/loss profile at 3db per doubling of distance instead of 6db like everyone is used to. This is because they don't expand up or down, they are bounded by the ceiling and floor. I'm hoping that the 250 12's that I got can cover the entire front wall with baskets nearly touching and will present a 1D expansion profile to the array producing a 0db loss per doubling of distance and providing perfectly even bass at every point in the room with no room modes. The only variation should be reflections from objects in the room and will hopefully be negligible. We'll see, I need to get that room emptied before I start on my own projects.
  9. I started testing the powered mixers. I need to get them out of my way so I can start tackling the mountain of guitar amps.
  10. Fortunately, I know what my neighbors think about the bass. Nothing... Sometimes It's nice being in the middle of nowhere. Now if I could just get the pizza guy to drive all the way here... oh well. @dgage I love it, the previous and next week they probably had a little bluetooth speaker. Apparently they'd rather have that. I played the movie "9" for the 10yo nephews with the subs 16x 12's all the way up and mains down a bit. After it was over, one of them stood up and said, "That's what a movie is supposed to sound like! Why dosn't everyone do it like that?" I got a big grin. @Endersshadow , I think you're selling yourself a bit short. 12x 12's is about the same Sd as 3x 24's. But only the same Vd as 1x 24. You do realize you just said "only running 12x 12's" , right? LMAO this place will warp you... FYI everyone, feel free to post random or even pertinent stuff, don't worry about cluttering the thread up. It's all good.
  11. I'm testing out an Escort 5000 right now. Everything works except for the RCA input. I think I need to re-flow one bad solder joint and that should work too. If i'm right, it will be up here later today. You could have the coolest suitcase on the block. Edit: It will take more than just that. Not listing it. Got everything to work except the rca's. oh well
  12. Hey Popalock, Before the auction I saw that you asked people to save the lot of all in one pa's for you, I watched it sell and when I found out you didn't get it, I figured I'd just mail you one. Thanks for amusing me with your off the wall shenanigans over the years. I never looked at that lot again till now and didn't realize that there were a couple model lines of these all in one setups in the auction. I'm guessing you haven't seen it yet. I sent you an escort 3000, not the PVI, almost the same thing. This one has speaker stands with it. https://www.amazon.com/Peavey-Escort-3000-Complete-Speakers/dp/B00B8QC9O0/ If it makes you feel better, what you got does the same thing, is a couple pounds lighter, and costs more. oops Hope you put it to good use.
  13. Let's see if this is enough to win the day today. It is a whole lot of win... Apparently it is
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