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Everything posted by niss_man

  1. Try this. Use red and black wires only. https://www.bunnings.com.au/olex-4mm-stranded-two-core-and-earth-electrical-cable-per-metre_p4430101
  2. Hi Snurb Have you thought about eq'ing those speakers. If you are using something like Jriver to play your music it is very easy to add an eq function. https://www.soundstagenetwork.com/index.php?option=com_content&view=article&id=941:nrc-measurements-kef-ls50-loudspeakers&catid=77:loudspeaker-measurements&Itemid=153 If you look at an anechoic measurement above, it shows the speakers to have excess energy in the 1.5k - 7khz region. This is a very sensitive region for human hearing and will make the sound fairly siblant and fatiguing. I'd eq 3-4 db out of that region to help with the sound balance. This should help a fair bit although you will not get those frequencies under 70Hz without sub integration.
  3. When I got into this hobby years ago I remember going to JBHIfi and listening to both Ikon 8's and the concert 10's. I enjoyed the Ikon 8's the most out of those I did listen to on that day including the Bigger concert 10's.
  4. Hi Tony How do they sound compared to your other speakers you have owned? Simon
  5. Toe in does the same thing but can also have the benefit of creating a larger sweet spot for other listeners other than the central position. That's why some recommend to have an extreme toe in position pointing the speaker to cross them in front of the listening position.
  6. https://www.audiopcb.de/boards/biino-volume-control/ Yep thats the one. He sells the pcb boards, relay, display and power supply boards unpopulated. You have to then buy the components and solder them yourself and then put them in a box. I use it as a volume/input control and then send the signal to my power amplifier. It is controlled by an arduino which also needs to be bought as well. Simon
  7. I use a relay volume control. Biino volume attenuator. Zero noise. Easily better than any of the ldr attenuators, or potentiometer types I've built.
  8. If you are into DIY. You can buy Jantzen blue speaker cable from Speakerbug in Brisbane. or get some Canare cable from Cliff Electronics at Coomera. Those are great bang for buck cables.
  9. Why don't people use google ? Searching the main title "Sony 85X8500F tv settings" produces "rting" website link as shown above! Now has anyone got a recipe for lemon cheesecake?
  10. In essence you are using one cap per channel. One cap is for the positive rail and one is for the negative rail, so you still need the two caps connected. If you remove any more you will lose one of the rails which won't be a very good idea.
  11. I thought there was going to be some schematic sharing in this thread.
  12. Nice vid and pics Pete. Appreciate that.
  13. What a nice rebuild. I've never seen anyone go to the trouble of electroplating the metal components before. Do you work in the electroplating business? Should look fantastic with all that shiny copper everywhere. Some nichicon fine gold caps would look nice in there with the copper parts as well.
  14. Taken from other diyfest/comp held in USA as an idea of how it could be done..... COMPETITION CATEGORIES DAYTON AUDIO Speaker project must use all Dayton Audio drivers in the project design. Any dollar amount or size is welcome. OPEN DRIVERS UNDER $200 (ANY BRAND, ANY TYPE, NO RESTRICTIONS) Projects less than $200 per pair to build ($ limit for drivers only). Speaker project can include any brand drivers. OPEN DRIVERS OVER $200 (ANY BRAND, ANY TYPE, NO RESTRICTIONS) Projects greater than $200 per pair to build ($ limit for drivers only). Speaker project can include any brand drivers. OPEN UNLIMITED Open Unlimited includes speaker projects that are active or cannot be categorized in the other 3 categories. If the speaker design has been entered in the Open Unlimited category, the same design without active components cannot be entered into any other category. *There will be 3 winners from each category MUSIC SELECTIONS TO BE USED IN JUDGING COMING SOON # Artist Title Category 1 Billy Idol White Wedding Open Unlimited 2 Talking Heads Burning Down The House Open Unlimited 3 Billy Joel Zanzibar (album version) Open Unlimited 4 Bonnie Raitt Silver Lining Dayton Audio 5 Michael Jackson Beat It Dayton Audio 6 North Mississippi Allstars Granny Does Your Dog Bite Dayton Audio 7 Nora Jones Come Away With Me Over $200 8 Marc Cohn Walking In Memphis (digital version) Over $200 9 Resphigi Pines of Rome Near A Catacomb Over $200 10 Tracy Chapman New Beginnings Under $200 11 Dire Straights So Far Away (album version) Under $200 12 Hugh Masekela Stimela Under $200 COMPETITION CRITERIA The judges will use the following criteria to determine the winners of the Speaker Design Competition: Craftsmanship (visual) Originality / Design (visual) Tonal Balance (audio) Clarity (audio) Imaging (audio) The speakers under test are driven with a music signal fed from a CD player to an Emotiva Stealth DC-1 preamplifier, with no upstream signal processing, crossovers, or equalization. The Emotiva DC-1's internal DAC and digital-domain volume control are used. The Emotiva DC-1's balanced line outputs feed a stereo Emotiva amplifier to power the entries. Designs featuring additional channels of amplification, active crossovers, equalization, or other processing (including DSP) are restricted to our Open Unlimited category. For systems in the Open Unlimited category, the available outputs from the source are balanced (XLR)/unbalanced analog (RCA), and optical Toslink. There will be 3 one-minute snippets of music listened to by the judges. These music selections are played per entry, each one minute in length, and these selections are the same for all speakers in a category, but different sets of tracks are selected for each category, with the selections for the categories having higher priced and more complex speakers being more challenging and possibly revealing of sonic flaws. Before each speaker plays, the level is set using pink noise, with SPL monitored via our calibrated Dayton Audio OmniMic V2 system, so that all speakers play at the same level. Each speaker will be evaluated and rated by the judges, then tabulated and results entered into a spreadsheet. These results will be combined with the audience submission votes to declare winners in the aforementioned categories. Judging sheets will be sent by mail to the designer's home address following the event. In the event of a tie within a class, the judges will select the ultimate winner. Please Note: Commercial entries or entities are prohibited: Individuals or entities that sell finished speakers (part time, full time, or any time) are excluded from registration. Should it be determined that you are in the commercial sales of finished speakers your entry will be removed. Please contact us should you require further explanation or clarification. Contest committee members will have final say whether a project is excluded or not from competition.
  15. Here is a link to midwest audiofest site for examples on what could be done, categories, music used, how it is judged. I see no problem with active speakers at all, the more in a competition the merrier. Price would be of consideration for an active system as well and should go into the "open"/expensive catagory. https://www.midwestaudiofest.com/speakerdesigncompetition.php
  16. Make sure to get plenty of off axis responses as well to get an idea of your power response and how well your crossover choices are doing.
  17. What do you mean considering. The police here in Qld have had the stingers as highway pursuits for a while now. I saw one yesterday when driving to the Leyburn historic sprints , he had pulled over a car in the oposite direction.
  18. I'd use the free program rew to do a sweep. It will tell you more than just singular frequency steps. You may find one of the tweeters has a dip in the frequency range where you tested but the rest is similar to the other speaker. If this was the case then the tweeter will only be matched at the frequency point where you measured and the rest may be out.
  19. Yes. It will be good to see the manufacturers spec from your own sweeps. It may or may not look like a good graph when done but it is what it is. Measure your speakers in the same spot under same conditions and see how they compare to each other. Then tweak with the pots as you suggest to get the best sound to your ears. I'd also measure a few off axis ones 15, 30, 45, 60 to check the off axis power response as well.
  20. I'd look at vw golf as well. Have owned mine since new. Now at 220 thousand km.
  21. I've been hunting one of these as well to match my au555a. Seem hard to find and the ones that are for sale seem excessively priced.
  22. What's the sound quality of the dac hat like?
  23. If you need parts, maybe Falconacoustics.co.uk can help.
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