my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » 1/3 octave real time analyzer

Author Topic: 1/3 octave real time analyzer Mike Fitzgerald Expert Film Handler Posts: 224 From: Castle Hayne, NC, USA Registered: Jun 2002 posted 01-31-2003 06:35 AM                     Has anyone had any experience with a Behringer ULTRA-CURVE PRO DSP8024 analyzer. I see that they go for around 250 with a calibrated microphone. Thanks  |  IP: Logged Rob van Ede Film Handler Posts: 25 From: Zeist, The Netherlands Registered: Sep 2002 posted 01-31-2003 09:51 AM                        Hi Mike, i have one and am very happy with it. I use it as eq / delay in my home system (http://home.hccnet.nl/r.v.ede). The measurement microphone is nothing special and response falls rapidly over 16K (according to the specs flat to 20K ???). I know of no other machine this affordable that can do the same. If you want to use it for analyzing only, you should also consider using your computer and a measurement program like SmaartLive (http://www.siasoft.com/products/smaart_live.shtml). With this program you can also measure time response, so you can align your speakers much better taking path length and phase differences into account. Rob  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-31-2003 02:21 PM                     Mike, Don't expect miracles from it. You need a really good analyzer and mic(mics)to do the job properly. At least one of the Gold Line models...or better yet the small Ivie is excelent, and the filters are extremely accurate. Unless the analyzer has some sort of offset programmed into it for the particuluar mic....such as in the R-2, then you need to spend most of the dough on a really good mic to ensure that you get one thats truely flat. It should also have a free field type capsule on it. The moral is.... buy a cheap analyzer....get cheap results. Mark @ CLACO www.clacoequipment.com  |  IP: Logged Christopher Seo Jedi Master Film Handler Posts: 530 From: Los Angeles, CA Registered: Jun 99 posted 01-31-2003 05:17 PM                     Mark, I thought random pressure response microphones were used for cinema EQ measurements, not free-field. At least, that's what I was advised. Could you explain? Thanks.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 01-31-2003 05:26 PM                     Thanks Chris...You're right...thats what we use here in the states as per ANSI standards. However in Europe the IEC specs call for using a free field mic. A random response mic is either pointed straight up , or at a 70 to 80 degree angle, and a free response mic is pointed directly at the source. I'd be curious to hear back from some of our European members as to what they really use over there...... Mark  |  IP: Logged Mark Hathaway Film Handler Posts: 31 From: Australia Registered: Nov 2001 posted 02-01-2003 02:43 AM                     Howdy guys, while the Ultra curve 8024's mic isn't great, the actual 8024 is top notch. Its also best to use it ONLY in the digital domain, it was designed for the pro audio world, if fed a normal <2v analog consumer level, quantilization errors can be heard at LOW levels. They sound like <60hz pink noise. The best option is to use the 8024 via the digital interface. I believe the current street price for them is around 175 USD. The new ULTRA-DRIVE PRO DCX2496 is probably worth a look too. Its a digital speaker management system, great for projects on a budget. Mark Hathaway  |  IP: Logged Antonio Marcheselli Phenomenal Film Handler Posts: 1260 From: Florence, Italy Registered: Mar 2000 posted 02-01-2003 06:34 AM                        Hi Mike I have three 8024 for my Home Theater setup. Recently, as first attempt, I tried to eq a small cinema of my friend. I have both behringer and RTA on PC. Unfortunately, IMHO, Behringer's RTA is not usable since it has only 1 second of average. This means that the graph will be too fast to have a precise calibration. So, I used the behringer as Pink Noise generator and PC as RTA! (SpectraLab) I still didn't had the chance to use them as equalizers, so I can't say nothing. I wrote to behringer asking them to add in a future software release an higher average. About ECM8000 (mic), a friend of mine assured me that the mic IS flat (he tested it with a professional one). Unfortunately, like all cheap thing, there is mic and mic. A professional mic should come with a calibration sheet, I believe that an absolutely flat mic does not exist. If there is no calibration, you cannot expect perfection! However the result in the small theater was not bad! Surely better than before!!! Bye Antonio P.S. Do you know that Behringer DSP8024 and Ultratube 9024 are the same thing with just a different eeprom? Do not believe me? Open the 8024 and watch the board: "Behringer DSP8024/DSP9024"  |  IP: Logged Christopher Seo Jedi Master Film Handler Posts: 530 From: Los Angeles, CA Registered: Jun 99 posted 02-01-2003 06:55 AM                     Thanks Mark, I didn't know there were differing standards in Europe. Do they still adhere to the X-curve over there? But using a free-field mic must give at least somewhat different results....  |  IP: Logged Antonio Marcheselli Phenomenal Film Handler Posts: 1260 From: Florence, Italy Registered: Mar 2000 posted 02-01-2003 07:33 AM                        Mark and Christopher What is a free field mic? And a random pressure? What about the correct pointing of the mic? Can you explain me better? Antonio  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-02-2003 01:00 PM                     Antonio, Follow this link for an easy to understand explanation of these two mics. Its on the Ivie website. Go to page 20 of the manual..... [URL=http://http://www.ivie.com/pdf/ie-30a.pdf I used to own a Behringher Ultracurve, used it only for 1/3 EQ section, for which is it very good for. I once compared its spectrum analyzer capabilities to the Ivie PC-40 that I have, and its pretty far out in left field.....so I would stay away from that part of it. Behringer also went out of buisness in the States for quite some time. I would only assume that they are back by now. Mark @ CLACO www.clacoequipment.com  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 02-02-2003 01:09 PM                     There is an Ivie PC-30 and mic on e-bay right now. Thsi is a steal even if it does not work!! Its still a current Ivie product. Not sure if the mic is free field or random though. E-mailing the seller would tell you that though. Me thinks this analyzer goes for around 4500.00 U.S. right now....perhaps a bit more than that. The calibrated mics are around 1200.00 U.S. The PC-30 works nicly with the Ultra Stereo 4 mic setup. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3309762266&category=1504 http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2504019172&category=23784 Mark 2 CLACO www.clacoequipemt.com  |  IP: Logged Bas Haldermans Film Handler Posts: 11 From: GA Echt, The Netherlands Registered: Dec 2002 posted 02-02-2003 04:23 PM                        Hi i'm using a abacus analyser. How do you like this analyzer. Bas  |  IP: Logged Michael Schaffer "Where is the Boardwalk Hotel?" Posts: 4143 From: Boston, MA Registered: Apr 2002 posted 02-02-2003 05:30 PM                        Not very much. I like the Ivy and R2 better. But it is practical and can be used for quick checking.  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 02-02-2003 06:49 PM                     I have an abacus and was always happy with it it did a good job and the fact it had two line inputs was nice for doing a chains as you could compare the two cell halves I also have and use almost daily the R2 (my back with testify to that lugging it around) and also have several of the goldline DSP30's and they are an excellent value considering that ther dsp filters are far tighter than Ivies and it will when connected with the laptop option due 1/6 octave analysis (which is nice for subs)  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.