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Unity horn build

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snowflake View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 31 December 2013 at 1:00pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 10 January 2014 at 1:09pm
crossover finished Smile 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 LOL




Edited by snowflake - 27 February 2014 at 6:29pm
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jamieb View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jamieb Quote  Post ReplyReply Direct Link To This Post Posted: 11 January 2014 at 6:06am
I'd love to hear it
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Phil B View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Phil B Quote  Post ReplyReply Direct Link To This Post Posted: 13 January 2014 at 1:26am
Originally posted by snowflake snowflake wrote:

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


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.
Mostly harmless.... except if catering is shut.

Solar Sound System Shennanigans..http://diyhifi.biz/
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fat_brstd View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fat_brstd Quote  Post ReplyReply Direct Link To This Post Posted: 13 January 2014 at 11:17am
Originally posted by Phil B Phil B wrote:

The next step is a better crossover ( hopefully a BSS388 I have my eye on! )


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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snowflake View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 12 September 2014 at 5:22pm
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. View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TONY.A.S.S. Quote  Post ReplyReply Direct Link To This Post Posted: 12 September 2014 at 6:24pm
It's quite time consuming isn't it.
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billy.jukes View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billy.jukes Quote  Post ReplyReply Direct Link To This Post Posted: 04 November 2016 at 1:14pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 04 November 2016 at 1:24pm
Hi, yes could meet up. you got a van and somewhere good to listen to them?
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billy.jukes View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billy.jukes Quote  Post ReplyReply Direct Link To This Post Posted: 04 November 2016 at 7:29pm
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 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote billy.jukes Quote  Post ReplyReply Direct Link To This Post Posted: 04 November 2016 at 7:32pm
I'll try and get my hands on a c7 rig as a reference point aswell
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snowflake View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote snowflake Quote  Post ReplyReply Direct Link To This Post Posted: 05 November 2016 at 5:47pm
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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