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Unity horn build |
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snowflake 
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Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3097 |
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 Posted: 31 December 2013 at 1:00pm |
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by the way, Phil, hear you were at the Combat Wombat gig at my local in Bristol a few months ago. Think you were chatting with my friend Nate from Kebele Sound LOL
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snowflake
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Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3097 |
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Posted: 10 January 2014 at 1:09pm |
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crossover finished
 third order filter into L-pad with 12kHz HF bypass. bulb protection on tweeter with low value polyswitch in parallel for low level operation in case of bulb failure. small value caps paralleled with large ones to bring values within 1% of design.the resistors are rated at 30W each without a heatsink - may upgrade to some that are 50W or use even 6*50W so that the L-pad can dissipate a full 300W when the driver+bulb is drawing 100W - but maybe this is overdoing it when duty cycle and thermal mass of the resistors is considered??? also just received pre-wound coil that looks a bit tidier than my attempt. haven't got any LPF on the mids as this gives flatter response at 4kHz for some reason- perhaps coupling between mids and tweeter compensating for the hf 'suckout' of the mid ports. bi-amped with the woofers on one channel and mids/high on other channel. active 3rd order LPF at 130Hz and HPF at 280Hz with the phase of the mid/high section reversed gives flattest response. been running it off a crown xe4000 which can put 1200W into 4R for the woofers and 800W into the mids. haven't got it near clipping yet as the whole house starts vibrating   Edited by snowflake - 27 February 2014 at 6:29pm |
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jamieb
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Joined: 05 December 2012 Location: male Status: Offline Points: 64 |
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Posted: 11 January 2014 at 6:06am |
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I'd love to hear it
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Phil B
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Joined: 21 November 2004 Location: Melbourne Status: Offline Points: 2313 |
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Posted: 13 January 2014 at 1:26am |
I was.... very briefly ! Managed to cobble together an almost OK sounding rig out of what was in the pub ( and what I made them go fetch !). Monkey Marc from Combat W is one of the other bods involved with our Solar/ Wind rig... Glad to see your project ticking along. We have been running our 3 way Unities for a few months now and all we get is compliments about the sound. We did a small stage at an outdoor festival on New Years day and pretty much wowed everyone there ( so much so we dragged it to the VIP area and did a 2 day after party!). I can`t explain to people how good they sound and the way a Unity horn images a true point source...you have to hear it ! The main stages had ground stacked L`Acoustic Kudo with SB28 subs and sounded horrible.... maybe we should offer to do it next year ! We are still running our mid/high crossover with a simple HPF for the Highs and no LPF for the mids like yours, but everything else is through the Ultradrive . The next step is a better crossover ( hopefully a BSS388 I have my eye on! ) and then maybe some 18" tapped subs with barn doors for next year ! Along with an MPPT controller for the wind genny! It`s never finished ........ .p. |
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fat_brstd
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Joined: 23 August 2008 Location: Melbourne, OZ Status: Offline Points: 2112 |
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Posted: 13 January 2014 at 11:17am |
I'll have one of your ultradrives if your getting rid of them. HAHA. BTW Snowflake, those unitys look really nice. Very good work. I also second what Phil said about not really being able to explain their coherence and having to hear them for yourself as nothing else comes anywhere near as close to a true point source, its actually quite strange to listen to the first time as you swear your hearing it wrong, or at least thats what happened to me. |
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Melbournes Rootical Warrior Roots - Dub - Steppers facebook page |
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snowflake
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Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3097 |
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Posted: 12 September 2014 at 5:22pm |
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finished crossover at last after late delivery of capacitors and two wrong deliveries of heat-sinks. same as the one posted above but better components and a lot neater.
 had to mount the L-pad heat-sink separate to the rest of the crossover because of lack of space. connector strip is rated 41A with wire protectors under the screws. four more to make now :)
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TONY.A.S.S.
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Joined: 21 February 2007 Location: United Kingdom Status: Offline Points: 6878 |
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Posted: 12 September 2014 at 6:24pm |
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It's quite time consuming isn't it.
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billy.jukes
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Joined: 31 January 2015 Location: Southampton Status: Offline Points: 8 |
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Posted: 04 November 2016 at 1:14pm |
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Hello Phil,
Do you still have this old synergy horn? I'm developing my own and would love to hear it. I also live in Bristol. Cheers,
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snowflake
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Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3097 |
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Posted: 04 November 2016 at 1:24pm |
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Hi, yes could meet up. you got a van and somewhere good to listen to them?
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billy.jukes
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Joined: 31 January 2015 Location: Southampton Status: Offline Points: 8 |
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Posted: 04 November 2016 at 7:29pm |
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I could try and sort out using the malcom x for a listen. How many do you have and what do you have to fill the lf range?
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billy.jukes
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Joined: 31 January 2015 Location: Southampton Status: Offline Points: 8 |
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Posted: 04 November 2016 at 7:32pm |
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I'll try and get my hands on a c7 rig as a reference point aswell
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snowflake
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Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3097 |
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Posted: 05 November 2016 at 5:47pm |
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yeah Malcolm X if you can swing it - going there tonight as it happens. Can probably get in the Black Swan if not. Only got a pair of tops loaded up at the moment and 4*18" tapped horns.
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snowflake wrote: