HD15 pics (and others..) now with plots
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Category: Plans
Forum Name: HD 15 horn
Forum Description: Discussion / Questions about the HD 15 horn
URL: https://forum.speakerplans.com/forum_posts.asp?TID=2204
Printed Date: 27 March 2026 at 8:37am
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: HD15 pics (and others..) now with plots
Posted By: norty303
Subject: HD15 pics (and others..) now with plots
Date Posted: 11 July 2005 at 11:34am
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Thought i'd better take some pics before i go ahead and paint them and cover up the lovely woodwork that Dom's done on the most recent set of cabs for me. 2 more HD15's and another of the 2 x 18 Beyma BP6 design.
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Replies:
Posted By: whitehousejamie
Date Posted: 11 July 2005 at 11:36am
Very Nice 
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Posted By: ricky
Date Posted: 11 July 2005 at 3:47pm
perfect! Will you put and t-nuts in the removable panels? If you have and some more photos we would be greatfull to see them..
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Posted By: norty303
Date Posted: 11 July 2005 at 6:04pm
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Yeah, the panels are all t-nutted. The drivers are held in by 4 clamps and 2 locating pins in case the clamps come loose. One of Dom's had shifted in the cab and had destroyed the surround against the baffle so its just a precautionary measure to stop them moving. I spent the day painting them today and tomorrow night i'll be riveting the hardware on the cabs so i'll do some 'after' shots too. They're looking bloody sexy.... I really need to get around to revamping the other 4 HD15's i've got so they all look the same tho. I'll justmention again, i'm doing the easy bit, Dom's the man responsible for the tough part ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: norty303
Date Posted: 12 July 2005 at 3:51pm
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Ok, got them painted and hardware fitted now. Sorry for the bad pictures, it's bloody hard taking pics of black cabs and getting any sort of depth.
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Posted By: Jimbo
Date Posted: 12 July 2005 at 4:22pm
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Look Great. Anything special about the paint/coating? Jim |
Posted By: norty303
Date Posted: 12 July 2005 at 4:27pm
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Nope, just Aldcroft Adhesives black stain on the interior and round the access panels (so that they still fit snuggly after painting without sticking or wedging) and Aldcroft speaker paint applied with a textured roller on the outside. Did 2 coats and would have liked to have done a 3rd but run out of time this week and had to get the hardware on tonight. ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: Dom
Date Posted: 12 July 2005 at 6:35pm
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Hmm... Envy you, I do not... When you see Dave this weekend, ask him what state I was in after I spent a day "revamping" the other 8 bins that Mateio's using.... ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
norty303 wrote:Posted By: mans1000
Date Posted: 12 July 2005 at 6:40pm
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Top job on them cabs
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Posted By: chris_k
Date Posted: 12 July 2005 at 6:46pm
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MMMMMM Very Nice!!! Glands on the cable comming through the baffle, very posh!! Where did you get the nobbly foam from? I`m trying to find some at moment with not much luck. |
Posted By: norty303
Date Posted: 12 July 2005 at 6:59pm
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I plan to drill the edging off, go to B&Q, buy one of their cheapy routers, abuse it rounding off the edges on the 4 cabs so it breaks so i can take it back in disgust and get a refund. Then a light sanding and roller them a new top coat of Aldcroft paint followed by some new corners. Bargain!! ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: Dom
Date Posted: 12 July 2005 at 7:19pm
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You can buy a router from Argos at the moment for £9.99... It's actually cheaper than a half decent roundover bit... Clear off the sawdust and you could even take it back under their 16 day guarantee... Obviously the router is a pile of crap, but you can't really go wrong with a rounding over bit as the bearing and the cutter make up for the inaccuracy of the router. Foam is available from CPC for about £5 per square metre. ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
Posted By: ceharden
Date Posted: 28 July 2005 at 12:56pm
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Norty, I'm curious about the Beyma 2x18 BP6 cab, have seen plans for it but not much info on it's specs. Do you use the recommended Beyma drivers or something else? How does it compare to an X1? Also, slightly off topic, how low can you sensibly run the HD15's before risking overexcursion of the driver? I've been trying to work it out from simulation but that seems to suggest the excursion gets excessive below about 60-70Hz. Reason for asking is I'm due to build some with some old Kappa15LF's I've got lying around but it might be a while til I can build something to go below them. Cheers.. |
Posted By: Dom
Date Posted: 28 July 2005 at 2:04pm
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We used to high pass ours at 45hz without any problems. Lost 3 drivers in 3 years of getting run very hard every weekend. ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
Posted By: norty303
Date Posted: 28 July 2005 at 4:26pm
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Its hard to say how it compares to an X1 as i've never run it back to back with one. Dave modelled the cab in Acabak and i did it in Bassboxpro and we came out with fairly similar results, although Dave's curve rolled off a little higher and played a little higher. It starts to roll of in the model around 70hz but it plays right up to 160 or so and still sounds ok, i've run it at 120hz and its been fine and very loud in that situation. Both the models showed it had high sensitivity (106-108) so i'd be really interested in actually measuring it - when was that next sub shootout?? I was talking to Dom at Glade and we came to the conclusion its much more a bass bin than a sub and would be great under X15's if you don't need to go really low. It does make noise down there tho, but i'm not going to make any claims until its actually been measured.
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Posted By: ceharden
Date Posted: 28 July 2005 at 6:11pm
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Cheers for the replies. Sounds like I'll be ok running just HD15's for most things that don't require a lot of sub. From that graph the Beyma cab isn't an equivelent to the X1 as I first thought; the X1 is definitely a sub. I was thinking that you ran them under the HD15's as Dom does with the X1 but I assume not now from seeing the response. Wonder what a 15" version would be like (just cos I've got a load of 15" drivers doing nothing but no 18"s and no money to buy new drivers) |
Posted By: norty303
Date Posted: 28 July 2005 at 6:36pm
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Yeah, i do run them under the HD15's, just like Dom does with his X1's however they're never going to go as low, rear chamber volume alone prevents that. I run them 40-80hz with HD15's and they do make noise still, just not as loud as the X1's i suspect. As i said, those are just models, they may well perform batter as we're still not entirely sure of the correct way to model manifold enclosures or the gains from that configuration. Thats why we won't know until its measured. I like them because they are versatile (as is my whole rig) and i can mix and match depending on size needed for each gig without losing out in any one area through not having a type of cab there. E.g. X15's and bp6 are still very useable on smaller gigs without missing the punch of the HD15's. ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: Dom
Date Posted: 28 July 2005 at 6:52pm
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Must say I'm well impressed with the X1s... Did a couple of small gigs last weekend with just a pair of X1s and a pair of full range boxes, sounding really nice... At some point you're going to have to get round to measuring the response of those Beyma cabs and answer the question once and for all... ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
Posted By: ceharden
Date Posted: 28 July 2005 at 7:04pm
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I'd be interested to see some measured plots when you get
a chance. Been wondering about manifold loading too cos there are
a few designs around which use similar configurations. They're
kinda half way between a reflex and a BP6. I'm still trying to
get sensible results modelling the HD15, haven't yet managed to quite
recreate Rog's plot on the plans page. Although I've had bad experiences with BP6 boxes (EV SB181 etc), despite the size I'm quite tempted by the X1, esp for the D'n'B gigs I can't seem to get out of doing. |
Posted By: norty303
Date Posted: 01 August 2005 at 7:48am
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OK, thought i'd make some use of a day off and actually measure some things. Some details of the environment - Using SpectraRTA to do swept logarithmic sine waves 20-250hz, measured using an ECM8000 @ 1m using moderate input levels (neighbours!) and done indoors in my front room which is so full of junk it's fairly acoustically dead. The resolution is 1/24 octave and smoothing/averaging switched off. First up is the HD15 loaded with PD154
Followed by the Beyma BP6 box
The Beyma box was fairly close to what the model said, perhaps a little lower but that could be the room. The HD15's seem to go as low as the subs but i can still get better volume out of the thing as a whole if i cut the HD15's at ~75hz and let the subs take some of the work. Interesting to see the hole at 100hz that Dom saw too when he measured ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: norty303
Date Posted: 01 August 2005 at 8:08am
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Oh, one more thing, the Beyma plot was done with my new box, the drivers have got zero hours on them so they might free up a bit and change the resp. Have to try again once they've been run a bit but unfortunately the other box has brand new recones so i've not got any run in drivers ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: Dom
Date Posted: 01 August 2005 at 3:19pm
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Considering the dip is below 100 on your plot and around 125 on our plot I'd be tempted to put it down to room interference on your part and sheep interference on ours.. The test is to move the microphone and see if the holes and peaks move around too.... ------------- "It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed." |
Posted By: tb_mike
Date Posted: 01 August 2005 at 7:33pm
 no outside measurements? what if my room isnt the same size as yours!
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Posted By: norty303
Date Posted: 01 August 2005 at 7:39pm
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Hey, i had a hungover day off, live in the town centre and have no generator. It's not easy for people to do outdoor measurements y'know On the other hand i could give you the dimensions and a list of my sh*t and you could build a room to suit. In my situation it's a case of...
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Posted By: Timber_MG
Date Posted: 02 August 2005 at 3:07am
| Then measure up close with the mic on the floor to minimize room interaction. In fact, mic close to the floor is a good idea when measuring any bass cab. |
Posted By: norty303
Date Posted: 02 August 2005 at 3:47am
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I did anyway, mainly to minimize background noise ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: freddyi
Date Posted: 02 August 2005 at 7:58pm
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hey norty303 here's your plots lightened - tis obliterated the vertical 10dB per division and frequency markings - but traces are easier to read. I tried flipping to negative - was ok but needed cleanup and wasn't as festive as original color scheme my - these look close - f6 around 50 in-room HD15 and BP6A plots http://home.earthlink.net/%7Ebuddhaboy2/Nort - http://home.earthlink.net/~buddhaboy2/Nort |
Posted By: norty303
Date Posted: 03 August 2005 at 4:23am
Yeah, they are pretty similar aren't they  ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: soundgodwannabe
Date Posted: 03 August 2005 at 10:10pm
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Those look great!!! I am so motivated to get busy on some. Thanks for the inspiration!! ------------- Make the soundman mad and I WILL press the suck button for your band. |
Posted By: norty303
Date Posted: 13 August 2005 at 12:09am
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Well, i just put 2 X15's (active), 4 HD15's (PD154), and 2 of the BP6 subs into a room thats not very big, but we had the LoFi Allstars playing and it was very pleasant (read: LOUD) The X15's were really limited and would have gone more but sometimes you need to go to the loo and rather not risk the 'crap DJ' cranking everything. The subs were crossed at 80hz and the HD15's at 170hz. The mid tops had a xover of 1.4kz lowpass 12db/oct and 2.1kz hi-pass 12db/oct. Vocals were nice and intelligible and most suprising of all was the fact i had to wind the mids and tops down by over 6db towards the end of the night as people filtered out, just to keep it sounding nice. The Ultradrive played up early on (frying bacon) but i found out that a good hard bang on the case fixed it. The FoH position must've been in a strange position (room mode?) as it didn't seem very bassy, but going to the toilet (2 floors down and 30ft south) i was feeling the floor moving more that 10' directly in front of the stack. For the first time i never got more than -2.5db display out of any of my amps. Even the DnB heads were happy. Unfortunately i forgot my camera but there's some shots come'in my way and video footage (complete with silly faces and the most impressive pair of tits you've ever seen) ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: norty303
Date Posted: 13 August 2005 at 12:20am
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Oh, and we were running off a Tascam 2ch scratch mixer which sounded sh*t as soon as you had one red led showing, but had the capacity at less than 1/3 channel gain to push over +6db from the masters. I spent most of the night riding faders and hassling DJ's but i did get 3 people ask for my number (that'll be the HD15's) including someone with 13k of JBL rig (and i was only pushing 6k) ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |
Posted By: Simo
Date Posted: 28 September 2005 at 7:51am
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Do you a drawing of the 18's design? thnx Simo
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Posted By: Simo
Date Posted: 28 September 2005 at 7:52am
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Do you have a drawing of the 182 subs in this link guys, they look wicked. thnx simo |
Posted By: norty303
Date Posted: 28 September 2005 at 1:02pm
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Its in the Beyma design book. Page 32 or 37 iirc http://profesional.beyma.com/downloads/Catalogo_de_cajas.zip - http://profesional.beyma.com/downloads/Catalogo_de_cajas.zip
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Posted By: Andrew
Date Posted: 29 September 2005 at 4:02pm
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Just noticed the additional ply on the inside of the HD15. For what reason did you use the ply, 'cos you had offcuts, or for any other reasons. Is there any advantage over the timber specified on Rog's diagram? |
Posted By: norty303
Date Posted: 30 September 2005 at 8:17am
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What are you referring to, i can see no additional pieces. The batten at the front is on the plans. ------------- My laser stuff: http://www.facebook.com/SubsonicSystems" rel="nofollow - Frikkin Lasers |