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jay michael

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Everything posted by jay michael

  1. Interesting experiment for sure. My personal take away is use 240v if available. If you don't have access you can still get solid performance from 120v plugs, just ensure you aren't overloading your amplifiers with too many speakers. On 120v I run 1 amplifier per 2 skrams on a 4ohm load and can achieve likely 90-95% of what can be achieved using 240v. don't expect to get the most of tough 2ohm loads from 120volt. Of course with 120v you will draw twice the amperage, deal with more heat and that may but extra strain on your gear.
  2. Finally spent some sheckles to have a proper power panel build to run my amps on 240v which isn’t super common up here in most venues. While subtle, things felt a little cleaner and tight and amps ran noticeably cooler. We knocked some bottles off the wall of the bar which was a first so it seemed to have helped https://youtu.be/rqMiTLL15s8
  3. While the limiters are basic on the dbx units I think they are enough to get by. I ran a Pa2 for probably close to 7 or 8 years and never burnt up any drivers. The venu360 is a big step up in functionality and sound quality but at that price there should be lots of good options out there. Personally I think if you are running your system into limit hard enough to think your limiter isn't up to the job the problem isn't your limiter, its that you don't have enough system for the job. I haven't needed to run my Skram's or my Danley's into limiting yet, if the day comes that it is required ill just start cutting up more wood
  4. Sorry no experience with the Sanway stuff but there is a lot of info out there regarding their offerings. Those prices on reverb are pretty crazy, real world pricing from a rep should be about 50-60% of those listed prices.
  5. No problem, I agree that article really simplified things on my end. Following the recommendations within, I have a bunch of shows under the bridge at this point and between monitoring magnet temps or getting hands on drivers in my paraflex cabinets I feel confident my drivers are well protected and performing excellent at powers higher than I would have run them using many of the "rules of thumb" I had gathered in other resources. On that note, I am super happy with my XTA DPA100 amplifier. Its a bit spendy but considering the onboard dsp with 4 channels of dsp outputs for controlling of "slave amplifiers" I really think XTA hit a home run with these units. Great sound quality and easy to use software, lots of power onboard, highly recommended. I've done some smaller shows running my big Danley's plus 4 subs run entirely off the single Dpa100 on a single 15amp circuit with no problems. Nice and efficient power.
  6. I cant speak for the 18tbx100 option but I have some thoughts on the amplifiers you listed. I have powered my Skrams using the CVR's, a Powersoft K10, an Admark k420 and Wasi w15k's. All of these amps work great and will give similar results. I would rate the CVR, K10 and Wasi so close in performance I doubt you could tell the difference between them in a blind test. Some people have stated that they think the Admark may have a slight advantage over the cvr on tone but I haven't experienced any evidence to support this, but I have only played around with their 4 channel models vs their 2 channel models. I don't think you can go wrong with any of those options.
  7. Well said tahoe, the overbuilt heavy and robust 21sw152 is meant for high power mayhem, at low volumes I wouldn’t consider it delicate and nuanced. I’m currently using a direct radiating reflex in my living room using a light weight high sensitivity driver and it’s much better suited for the size of the room. Even at low to moderate levels the Skrams were knocking plaster off the roof of my living room, the design is just not meant for home use in my opinion. Perhaps a lighter duty more efficient driver in the skram could work really well in your situation but I don’t have the experience to back that up. where is this war machine truck of yours Tahoe? We should meet up and let our Skrams have a play date haha
  8. Sound quality wise, I'd take skrams over double 18's all day every day.
  9. I have a fairly small listening room at home as well and at one point I had a pair of skram's with sm60f set up. They were pretty exciting for certain types of music, live music recordings in particular were really incredible. I wouldn't have kept them in there though, they were simply too brutish and over excited the room even at lower volumes. If you do try this I would recommend using a different driver than the 21sw152. I think somewhere in this thread someone made some listening impression comments on various drivers and the 21sw152 was characterized as darker sounding compared to some lighter cone options. The 21sw152 is still one of the top drivers for war volume applications, but I think there would be better options for low volume listening.
  10. Yes I have a pair of handles only on the hatch. Standing upright we can lift them 2 persons using the handles on the hatch as well I rounded the upper panel on the mount to serve as a carrying point on the front. I also have casters on the hatch side so the cabinet can be turned onto the wheels for easy rolling. I wouldn’t estimate the cabs are closer to 180 pounds but I haven’t weighed them to confirm. They can be stacked pretty easy with 4 people.
  11. This is a great room to play in, its been properly sound treated due to it being a live music venue. This system crushes in this space
  12. I haven't man, sorry. Hopefully someday the Skram will get the full testing treatment, I would think the Skhorn results should be a pretty good representation of what to expect obviously with lower output. The Skram also has larger vents so overall we would expect 2 skrams to outperform a single skhorn. At the end of the day it comes down to cabinet size. The Skrams 36x34x24 dimensions makes it a real compact 21" cabinet, I doubt any diy plan packs as much punch and deep extension in those dimensions. I can move these around on my own but they are at the very edge of what I would call manageable if its just you. If you have a dedicated crew that will help you move them into storage at 5am then perhaps look into larger cabinets
  13. Have a bit of an interesting field use report for my Skrams. I recently added new processing to my system using an XTA DPA 100. It’s a pretty interesting 4 channel amp, which I am using to bi-amp my Danley sh46 cabs. It also featured 4 channels of output control to add processing to my slave sub amplifiers. I used the information within this XTA/MC2 document on limiters to set up protection on my sub amps. https://audiocore.wpengine.com/wp-content/uploads/2018/05/XTA-Application-Note-DPA-Amps-Limiter-Settings.doc.pdf using the chart within this document it says to set up the 21sw152 at 86.9 volts for limiting, minus 1db for safety margin. Having always been a little hesitant on knowing just how hard I can safely drive my Skrams I added a 2 wire thermocoupler temperature sensing system to 1 of the cabinets to monitor magnet temperature. 1 wire is mounted on the external circumference of the magnet, the other right next to the vent on the end of the magnet body. last night I provided sound for a local dubstep crew, 7 hours of continuous deep sine wave bass. Peak volume was held for about the 3 final hours of the night, at maximum I was running about 2db down from where limiting would engage. Monitoring throughout the night, magnet temperature peaked at 44 degrees Celsius. This was also in a packed sweaty room that was raining condensation from the roof. pretty interesting to get some real Information about what the drivers are doing deep within the skram cabinets under real world conditions. I had previously come across a statement from Bennet Prescott who works with B&C saying that the 21sw152 can sustain 100 degrees magnet temperature without thermally damaging the coil. Previously I had been limiting these drivers to around 50 volts, it seems that in the Skram alignment we should be able to safely push them beyond that a bit without getting too much temperature build up. This of course may change for other types of music, I will continue to report back when I can speak to temps I’m seeing when doing other types of music shows. Data is beautiful. Always a pleasure getting to flex these cabinets, in a town where double 18’s rule, the Skrams are raisins eyebrows and making lots of new fans.
  14. Mine don’t, but they have a newer dsp model that might
  15. Dave released an interesting video regarding bridge mono use. I gotta give it another watch or two to digest it more. This is something I’ve never come across, is anyone in here utilizing this technique? Seems to offer some nice benefits. https://youtu.be/HYbvA1DOR9A
  16. Yeah man, just a pair of 3002’s on the 6 Skrams on 15 amp plugs, the venue has shit for power. Still zero complaints, they work hard, stay cool and sound great. Think the k10 is getting lonely staying at home all the time, I’ve actually put it up for sale
  17. I was running about 20% down from where the start of the limiters would engage during the headliner slot, so yeah lots of headroom remaining. I feel like I’ve had some breakthroughs this summer with tuning, I can get things sounding real full and impactful without it ever feeling tiring or abrasive, it’s a real pleasure to listen to. Open invite dude, I’m a big fan of alien technology, let’s set up a play date another clip recorded from the mezzanine upstairs, notice the bass warping the video recording…. Some serious pressure going down https://youtu.be/_Y7Y0FqIJfw
  18. This is the whole rig for now, I don’t think I’ll be adding anything more until we see what the future looks like…. Fucking covid. It’s perfectly balanced as is, I’d need more danley’s to keep up to more Skrams so the next leap would be expensive Haha. first time running it in a block like this, we melted some faces off, bass for days holy shit https://youtu.be/Bp4opVAjbZ4
  19. Its really terrible. I have many friends in the industry, music, dance, movies etc that have been hit terribly hard by this. A little bit of work opened up during the summer but I suspect when the snow comes up here shits going to get dismal again. I'm starting in person classroom instruction at the College in a few weeks, can't say I'm looking forward to it.
  20. Sorry to hear that. We were lucky enough to sneak a couple small outings like this during the summer…. But cases are getting bad here again so I wouldn’t be surprised if we get some restrictions again soon. Hope things get better for you soon
  21. A little to ad to this. When you start playing with different delay values you may find a couple that gives good additive summation, maybe even 1 or 2 with positive polarity and others with polarity inverted. What I've been doing is taking screen shots of each and at the end looking at each screen shot and seeing which one has the best or smoothest frequency response as well as the best phase traces that line up both at the crossover frequency and as far away above and below the crossover frequency. You really want to keep an eye out for null ripples forming above and below the crossover point. There should be 1 particular delay value that has the best combination of additive summation and alignment of the phase lines below and above the crossover point, that point should be your ideal place to set the system. Note: It may be worth trying a handful of crossover points as well, saving screen shots of all of the different delay values as each crossover point may give slightly different results.
  22. Mad respect to you Josh for sharing your brain power with us, lots of happy campers on this weekend We spent all day Thursday really scrutinizing the tuning of the system before the crowds arrived. I built presets in my Venu360 with all the appropriate peq setting for both the Danleys and Skrams with proper measured delay profiles at 75/85/90/95/100/105 and 110hz crossover points. With a handful reference tracks in dubstep, Reggae, house, techno and psytrance, a few of us a/b'd all the various crossover points with those tracks and came to some conclusions. For the most flexible crossover point that sounded the best over all the genres of music we preferred the 95hz crossover point. The only genre we felt suffered a bit at that higher point was the dubstep tracks, they sounded a bit cleaner around 75 to 80hz. Anything kick drum driven seemed to benefit from letting the skrams play a bit higher. It still blows me away every time I hear them how tight and punchy these subs are, not typically what one would expect out of a big 21" driver. I would also say the 5 skram's are pretty close to keeping up with the pair of Sh-46's, with the sub amps wide open we had the Danley low amps around 95% and the high amps around 90%. Once we get the 6th Skram loaded the system should be pretty much perfectly balanced power wise. If we add more Skram's some day we will probably have to add another pair of tops as well. Here is a few more short phone recorded clips, they seem to give a good feel for the impact and punch of the system, but the really low deep sub stuff seems to not come across as good as it sounded in person, Iphones must compress the recording a bit or something. With some headphones these vids sound pretty good though https://www.youtube.com/watch?v=AtuebCpml1Q https://www.youtube.com/watch?v=9tU3YXh4J4s https://www.youtube.com/watch?v=knf6HSPEypY https://www.youtube.com/watch?v=VxxExGbyfSA
  23. Hey everyone. I'm going to first off admit that I am not an expert REW user. I've drudged around the internet for a few years trying to find a reliable procedure for executing a proper phase alignment between tops and subs without spending money on something like Smaart. There have been some tools added to REW recently to assist in this, but I've never come across a proper explanation or tutorial on how to do it. Piecing together some bits and pieces i've found from a few different sources I think I may have it somewhat figured it out. Warning, I filmed this after a LONG hot day and was pretty burnt out. You'll notice I miss-spoke a few times towards the end using the wrong descriptors for what I was trying to say. Otherwise It should be easy enough to follow what I was doing. I've since used this procedure a few more times setting up my system in different configurations and I've been getting repeatable results that seem to make sense and sound really good. Perhaps this is old news to some of you but I thought I would share it to see if you might find it useful, or absolutely shoot holes in it if you think its out to lunch. End goal is I want a repeatable process that I can rely on, and maybe do a proper tutorial down the road to help others out. It seems like its one of those mystery processes that people ask a lot about. Let me know what you think, good or bad.
  24. Sorry, not very descriptive in my post lol. We had 5 Skram's out under my Danley Sh-46 for 3 days this weekend, sadly I have a driver stuck in customs so the 6th Skram stayed at home. First time feeling like I had abundant power and amplification to really see what everything could do, used 3x CVR 3002 on subs, 1 skram per channel and 2x Crest Prolite 7.5 bi-amping the Danley's. Really happy how everything's come together, ran flawless all weekend and sounded fantastic with tons of headroom.
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