Funktion One Infra Bass
Printed From: Speakerplans.com
Category: Plans
Forum Name: New Projects Forum
Forum Description: Forum for new speakerplans projects, in memory of Tony Wilkes, 1953 - 2014
URL: https://forum.speakerplans.com/forum_posts.asp?TID=6381
Printed Date: 26 March 2026 at 9:25pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: Funktion One Infra Bass
Posted By: montarbo
Subject: Funktion One Infra Bass
Date Posted: 06 September 2006 at 8:37pm
|
Hi some time ago, I saw a plan of this cabinet in this Forum, but I can't find it any more, could someone help me? Thanks a lot! |
Replies:
Posted By: james folkes
Date Posted: 07 September 2006 at 4:20am
|
i think you're looking for http://groups.msn.com/SpeakerBuildingpics/shoebox.msnw?Page=1 - this little goldmine...
james. ------------- mardy hippy. |
Posted By: CHAMPION
Date Posted: 12 September 2006 at 11:54am
|
James, do you know anyone who has built the Micor-scoops, ? I want to make these and load them with the PD 156, or 1550, just wanted to know the bass response, I rekon it will be deep and throw more than the Wembley B lines and T 18's as it has classic scoop internals ! may be the micro scoops wont throw as far as the bigger scoops, or will the sound be as the same as a Full size scoop but on a smaller scale, as there only 15", a more punchy,deep,throw mix !!! Any ideas
------------- Sticks n Stones |
Posted By: james folkes
Date Posted: 12 September 2006 at 2:10pm
|
i think the pile of micro scoops shown in the picture were built by the designer, you can pm him through here, although he doesn't post with anything like the regularity he used to so his pm inbox is probably already chocka with questions about the es18-bph! i've got not a clue how well the microscoops work though, sorry!
apparently the rcf bassbin is the basis for the new kv2 vhd bass bin, only the kv2 is a bit deeper, goes a bit louder and a bit lower. that's a cool bin... james. ------------- mardy hippy. |
Posted By: CHAMPION
Date Posted: 13 September 2006 at 3:30am
|
Oky..... it also looks like a T-18 design very similar ! I may just make 4 or 8 of the microscoops i have a new set of PD156 drivers ! Make them look like a void cabinet. i will post you pics soon. ------------- Sticks n Stones |
Posted By: Xmax extreme
Date Posted: 17 September 2006 at 9:31am
hi james, how would this cab perform? frequecy response for one cab and suitable drivers.
need some comments on this cab mate.
thanks
|
james, ind.st wrote:Posted By: Tekasis
Date Posted: 18 September 2006 at 7:16am
|
Hi,
Anyone of know where to get the 18'' version of this ES-15BLH ?
Does anyone know if you multiply the measurements for the 15'' design by 1.2 if it would work for an 18'' ?
Reason I'm looking for this design & not the normal 18'' scoop design is that this one has the sloping baffle & looks a bit easier to make.
Cheers.
|
Posted By: COWFOOT
Date Posted: 18 September 2006 at 8:33am
|
What do I have to do PC wise to see the other dimensions of the InfraBass cabinet? I can only see a top overview.
I'm PC challenged.
|
Posted By: james folkes
Date Posted: 20 September 2006 at 1:12pm
remeber that it is the same truck packing size as the f218... 
i've only heard the real thing once or twice, they sounded cool for sure, certainly gave the f218s a really meaty thud for some prime tek-house, but i'm not sure that they don't use some proprietary driver. it's certainly an easy enough box to model, try it with some 18 xbs or something... james. ------------- mardy hippy. |
Posted By: ceharden
Date Posted: 20 September 2006 at 3:47pm
|
How does it compare to the X1 or D&B B2? Anyone noticed that
if you stick a divider in the middle of a B2 you get almost the same
layout as an X1? I'm going for a halfway house between the two.... |
Posted By: james folkes
Date Posted: 20 September 2006 at 4:19pm
f3 for the infrabass 218 is 25 Hz, so it is a considerably different animal to the x1 i think... never heard any d&b boxes, but i really don't get out enough. 
when you're stood up close to them they sound a bit wrong, but step back and check out the way they integrate with the rest of the sound and they start to become pretty damn cool, start pissing around with infrahorn attachments (which, if you were going to try and model your own version of the cab, you'd surely get hornresp out and just to see what could be done with a few extra bits of wood) and the true sickness starts; but i don't think you'll ever quite equal the original because most funktion one drivers are a bit special and not really comparable with any off the shelf products. i love the line on the website "Due to the very large current requirements of extreme low frequencies, only amplifiers with high calibre power supplies will realise the full potential of this product." ie, don't get aspirations about genuine sub bass unless you can back it up with the very best in amplification... nice! james. ------------- mardy hippy. |
Posted By: ceharden
Date Posted: 20 September 2006 at 4:43pm
|
Ok, so they're not quite comparable. Personally I think I can
manage without going down to 25Hz. 35Hz is probably more than low
enough, flat-ish to 40Hz would be fine. If the plans on the web are accurate, there really isn't much to the infrabass, just a very large BP4 arangment. The flare turns it into a BPH I guess. Might have a play with it in Hornresp one day if I get bored.... |
Posted By: Phil B
Date Posted: 21 September 2006 at 4:37am
|
Done a few gigs this summer with 2 x Res2`s on top of 2 x infra`s. I was very skeptical to start with but after hearing `em...
v.v.impressed for a four box set up! Take the x-over point of the infras up a bit and leave the res2`s as standard settings...loads of punch and loads of sub! Good for smallish rooms or small tents! .p. ------------- Mostly harmless.... except if catering is shut. Solar Sound System Shennanigans.. http://diyhifi.biz/" rel="nofollow - http://diyhifi.biz/ |
Posted By: ceharden
Date Posted: 21 September 2006 at 5:04am
|
I guess the Res2's play low enough with the 15" to meet the infras ok. Would be interested to hear such a setup. Don't really have any experience with 4th order bandpass, any ideas what sort of driver is required? |
Posted By: _djk_
Date Posted: 21 September 2006 at 6:47am
|
"Don't really have any experience with 4th order bandpass, any ideas what sort of driver is required?"
Low Fs, high Qts, high Vas. Not normal parameters for PA drivers. ------------- djk |
Posted By: montarbo
Date Posted: 21 September 2006 at 2:57pm
|
Not my favorite Speaker, but what about the Eminence Kilomax? Parameters are ok, and the large X Max/X Dam would be good, too. |
Posted By: ceharden
Date Posted: 21 September 2006 at 4:28pm
|
Funny you should say that, but of the drivers I've just tried in WinISD
for this style of cab it's one of the better ones. Might need
slightly larger chambers than the Infrabass tho. The fact that
not many PA drivers are suitable indicates it's almost certainly a
slightly unusual custom driver. |
Posted By: james folkes
Date Posted: 21 September 2006 at 5:36pm
|
i was chatting to a forum member who was until recetly very well connected with fane, he has it on very good authority that all of the drivers in funktion boxes are customs... literally, all of them.
the lack of pa drivers with suitable spec is one of the things that's holding us back with the pa wicked ones (we think...), steve deckert recommends what djk has outlined above. james. ------------- mardy hippy. |
Posted By: montarbo
Date Posted: 21 September 2006 at 6:32pm
| What other drivers do you think are suitable? |
Posted By: _djk_
Date Posted: 22 September 2006 at 6:45am
|
Over 105dB/2.83V/1M at 50hz, crosses at 80hz
Driver Properties
Name: 295-455 (15" IB) Type: Standard one-way driver Company: Dayton Loudspeaker Co. Comment: IB series No. of Drivers = 2 Mounting = Standard Wiring = Parallel Fs = 20.8 Hz Qms = 12.08 Vas = 11.11 cu.ft Xmax = 0.563 in Sd = 127 sq.in Qes = 0.69 Re = 5.21 ohms Le = 3.08 mH Z = 8 ohms Pe = 300 watts ----------------------------------------- Box Properties Name: Type: Bandpass Single-Tuned Box Shape: Prism, Bandpass with two chambers Chamber 1 - lower-freq. Vb = 4 cu.ft Fb = 53.25 Hz QL = 5 F3 = 39.86 Hz Fill = minimal Chamber 2 - upper-freq. Vb = 15 cu.ft Fb = 53.25 Hz QL = 5 F3 = 72.93 Hz Fill = minimal No. of Vents = 1 Vent shape = round Vent ends = one flush Dv = 20.72 in Lv = 1.5 in
----------------------------------------- Driver Properties Name: 151269 Type: Standard one-way driver Company: Eminence Speaker LLC No. of Drivers = 2 Mounting = Standard Wiring = Parallel Fs = 23.4 Hz Qms = 11.63 Vas = 16.27 cu.ft Xmax = 0.36 in Sd = 143.1 sq.in Qes = 0.35 Re = 6.21 ohms Le = 4.1 mH Z = 8 ohms Pe = 300 watts This one is 102.5dB/2.83V/1M at 50hz, and can cross at 100hz.
Box Properties
Name: Type: Bandpass Single-Tuned Box Shape: Prism, Bandpass with two chambers Chamber 1 - lower-freq. Vb = 8 cu.ft Fb = 31 Hz QL = 5 F3 = 38.7 Hz Fill = minimal Chamber 2 - upper-freq. Vb = 7 cu.ft Fb = 62 Hz QL = 5.891 F3 = 101.1 Hz Fill = minimal No. of Vents = 1 Vent shape = round Vent ends = two flush Dv = 15.39 in Lv = 1.5 in The Dayton driver is about $110, and a single driver as a direct radiator is only 90dB/2.83V/1M If you add a heatsink to the vent, this driver can handle 600W.
The 151269 driver is about $60, and a single driver as a direct radiator is only 96dB/2.83V/1M If you add a heatsink to the vent, this driver can handle 600W.
The 151269 is more of a PA driver, and does not benefit as much from the BP4 loading, although it reduces cone excursion dramatically in the 60hz region. This is the driver Yamaha uses in their dual 15 sub. ------------- djk |