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-=SHOW OFF YOUR SOUND SYSTEM!!!!=-PART 3 |
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fat_brstd ![]() Old Croc ![]() Joined: 23 August 2008 Location: Melbourne, OZ Status: Offline Points: 2041 |
![]() ![]() ![]() ![]() ![]() Posted: 19 December 2021 at 11:31pm |
Some pics from the party we did a couple of weeks ago, 4 rigs over 2 rooms, our first proper show after the worlds longest lockdown here in Melbourne.
L-R Adrians Wall, Housewife's Choice & Solidarity Sound Systems ![]() ![]() ![]() And in room 2 we had a third of the SubTemple Sound System rig ![]() ![]() Also bonus outdoor rave from Saturday just gone with Sub Yard Sound System and their brand new 18TBX100 drivers getting broken in with a lot of D&B and sounding very nice compared to the old ones they replaced. ![]() ![]() |
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Melbournes Rootical Warrior Roots - Dub - Steppers facebook page |
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paulus ![]() Old Croc ![]() ![]() Joined: 14 December 2005 Location: SOUTH BIRMINGHA Status: Offline Points: 3058 |
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TRENDSETTER SOUND SYSTEM
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al_x ![]() Young Croc ![]() Joined: 12 February 2006 Status: Offline Points: 808 |
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Which system are you referring to?
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djkeet ![]() Registered User ![]() ![]() Joined: 26 December 2011 Location: England Status: Offline Points: 445 |
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Nice set up have you had chance to do an A/B comparison with your custom subs V Silver/Golden Paraflex Subs or do think there's no need? @ HMAUDIO
Edited by djkeet - 05 September 2021 at 9:23pm |
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Soundbite
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AndyWave ![]() Registered User ![]() ![]() Joined: 30 March 2008 Location: Finland Status: Offline Points: 377 |
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Thank You for the tip. Unfortunately that would mean to re-arranging all my furniture, and would make the room somewhat unusable as living room. ![]() As my living room is on the small side, quite subtle movements of 'speaker position make a difference, mostly in the bass end. Other hand the speakers have so much cone area, that they dominate the room to a some extent, in low midrange definitely. Overall I'm satisfied about the sound, in no means its perfect, but different instruments sound about right, I can hear what each musician is doing etc. Bad records sound bad and good ones sound better. Also it doesn't matter if theres some Brazilian bossa nova or Techno classics from 90's playing. When I was voicing the speakers (crossovers), I many times put a random CD or radio playing and go to the kitchen cookin' some, that way I hear only the power response from living room through the doorway. Quite revealing... I believe that my contraption as is would sound quite horrible in a glass walled, stone floored reverberation hell, as my living room is quite dead sounding already. -Andy
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torturing electrons since ......
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Contour ![]() Young Croc ![]() Joined: 03 March 2004 Status: Offline Points: 599 |
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For best bass and 3D imaging place open baffle’s 1/3 to 40% from the rearwall, and very close to the sidewalls, this way the speakers really will disappear and a huge stage will fill your room.
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AndyWave ![]() Registered User ![]() ![]() Joined: 30 March 2008 Location: Finland Status: Offline Points: 377 |
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Thank You JBL. I've gone for pro audio drivers for my home stereo few times before, connected to small wattage amps. But these monstrosities are my first open baffle solutions. As I wanted bass below 40's to be present at least some level, there is not much else to do but use lots of cone surface area. Distance from rear wall needs to be around 80cm with some toe in to get the bass alive. High Qts open baffle specific drivers exist, but with Qts around 0,7-1,0 they sound bit flabby, boomy and unprecise to my ears... I think there is easily something missing in music with high loss HiFi drivers, the more acoustic the original presentation is, the more it suffers. (Dynaudio, ATC, PMC or other that level stuff is excluded) Cheers, Andy |
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torturing electrons since ......
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jbl_man ![]() Moderator Group ![]() Joined: 12 January 2005 Location: London. Status: Offline Points: 11026 |
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![]() On jazz and soul records the sound was clear and natural. |
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Be seeing you.
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AndyWave ![]() Registered User ![]() ![]() Joined: 30 March 2008 Location: Finland Status: Offline Points: 377 |
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![]() ![]() Despite my particular home stereo project never sees a 10mm cone movement, I must at least knife edge the support plate area behind the vent. Never hurts to be on safe side. It's not at all a big job, few passes with router..... Other hand on my PA-cabinet projects I have always left sufficient room for the vents. ![]() Thanks guys, and hats off for both of You, Andy
Edited by AndyWave - 25 August 2021 at 8:39pm |
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Tinnitus Rex ![]() Registered User ![]() Joined: 31 October 2020 Status: Offline Points: 267 |
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As above, try it . learning by doing is also better and I commend your project for that.
![]() Edited by Tinnitus Rex - 25 August 2021 at 6:50pm |
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"couldn't we just like... use headphones?"
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APC321 ![]() Young Croc ![]() Joined: 24 August 2013 Location: West Midlands Status: Offline Points: 559 |
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I read the above discussion with interest, so I did a quick test set up to see what the result would be:
I took an RCF L15P/200 driver (which has a central cooling vent diameter of 44mm) and stood it off my workbench on two 75mm x 75mm wooden blocks. These were positioned well away from the vent. I then set up a tone generator running though an amplifier and put a low frequency tone though the speaker (around 30Hz). This was done at a level to generate movement of the speaker of about 1 cm peak to peak. The speaker sounded "clean" with just a "chuffing" sound of air passing from the vent. I then got a small piece of 18m plywood and partially obscured the vent with this. Now along with the "chuffing" sound from the vent I could hear a change in the in the previously "clean" sound from the speaker. I guess that this would be caused by some sort of back pressure on the speaker dome caused by the plywood partially obscuring the vent. Why design a speaker box that reduces the cooling efficiency of the driver, and causes colouration of the sound? |
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AndyWave ![]() Registered User ![]() ![]() Joined: 30 March 2008 Location: Finland Status: Offline Points: 377 |
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Thank You for understanding my engineer side of soul. ![]() BTW, You mentioned some observations about blocking cooling vents, have you conducted any measurements? I'll accept observations by ear also, thats what we use to listen music and sounds afterall. And maybe we should conduct our heated debate of blocked vents in an appropriate section of forum. ![]() cheers, Andy |
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