2x T60 @ 18" and a pair of piddly little OT12s

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88h88
Posts: 1606
Joined: Mon Jul 04, 2011 10:20 am
Location: Coventry, UK

2x T60 @ 18" and a pair of piddly little OT12s

#1 Post by 88h88 »

So last night myself and a few friends launched our Arc Parties collective in a local venue, I'd discussed doing something with a friend a while back but when he came over and heard the pair of T39s I have he wanted me to sort the sound for the night. About a week later the first of the T60s was birthed and he and the two other fellas in the group came over to hear it. They were all hugely impressed at the quality of sound that was being produced by this hand made box with a relatively piddly 12" driver in it.

...so from that point work started on another T60 and it was finished mere minutes before being loaded into the van and driven down to the club. The room is an interesting construction, it's rectangular but the middle section has a raised ceiling, no soft surfaces, all hard bare surfaces and multiple pillars as it's a basement with a 4 storey building on top. So we set the subs up in a few places and found that right in front of the stage yielded the best output, it was about 10' from the rear wall and in the section of the room with the raised ceiling. In testing volume was kept relatively conservative, the whole setup was whomping out 116db crystal clear at one point, absolutely no strained sounds whatsoever, it was beautiful. It was then turned down because that's a quite frankly ridiculous volume.

Fun was had with the DEQ2496 as for some reason it was RTAing the tops and one sub on one channel and the other sub on the other. Heads were scratched and the unit reset until we got to a point where we could RTA the system as a whole. Any ideas about that one fellas?!

Anyway things were tweaked and for the first hour I was shitting in in case something decided to kill itself. I really didn't have to worry. 3 of us played an hour each and we had Tom Demac headline the event, he was cruising at the same volume and then obviously thought 'fuck it' as he got into it and redlined the hell out of the mixer. Despite this it still sounded far better than any other system I've heard in that place... For a setup consisteing of 4x 12" drivers and some piezos it destroyed. The system held up superbly, the limiters on the subs at a somewhat conservative 40V and they were lighting every now and again. The only issue was the bloody Allen and Heath mixer I borrowed from work! Demac seems to favour a route of removing the bass from a mix and doing his work before bringing it back in, at one point though the bass dropped completely and the top end got rather light. I was stood at the bar and looked over to see one of my colleagues looking at the mixer so I quickly made my way across the dance floor to diagnose the fault. The bloody IEC had come loose somehow... Connection sorted and it was back to the tunes.

The only 'problem' with this setup is the fact it sounds far too clean. By the end of the night the volume was pushed and would've been at least the 116db we were playing with earlier and yet a couple of people said it didn't sound loud enough! On the dance floor you were being assaulted by thick waves of bass and the tops were stupidly clear yet it wasn't loud enough?! It seems people have come to understand that loud = distorted as hell...!

Basically the system destroyed that venue and I've got until August to build another pair of T60s and finish the other pair of premium driver'd OT12s that didn't get done for this event.

Bill as always your designs are perfection, if you were to ask me if I thought I'd be building pro grade speakers and running and event a couple of years ago I would've laughed in your face. I appreciate your work massively, as do my collective. :clap:
4xOT12s, 2xT39s@22", TTLS@18", 2xT60@18"

Michael Murphy
Posts: 343
Joined: Sun Dec 30, 2012 2:17 pm
Location: Trinidad

Re: 2x T60 @ 18" and a pair of piddly little OT12s

#2 Post by Michael Murphy »

Im gonna give a +1 on everything you said. My first lil bfm system is clear and clean. Quite frankly its near unreal. Ive got some big boys here talking about the clarity with such little power and small drivers and inexpensive components (tweeters) the OT12's really are killer loud. My ears are still ringing as a worked on the system a lil this morning. And like natural progression Ill be moving on to the T60's as well. After I finish another pair of T39's

Jools4001
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Joined: Fri Apr 12, 2013 7:33 am
Location: London
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Re: 2x T60 @ 18" and a pair of piddly little OT12s

#3 Post by Jools4001 »

88h88 wrote:t. The bloody IEC had come loose somehow... Connection sorted and it was back to the tunes.
Nice report!

Google "locking IEC connector" - loads of suppliers have them, they lock into standard IEC sockets and they're stupid cheap.
2 x 3012 HO Jack 12 Lites
2 x Delta Pro 8b Wedgehorn 8 Monitors
Subs? Big question mark!

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on1sony
Posts: 145
Joined: Tue Dec 01, 2009 12:03 am
Location: Southern California
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Re: 2x T60 @ 18" and a pair of piddly little OT12s

#4 Post by on1sony »

photos?
6xBFM TUBA60 30" WIDE
4xBFM DR280's
4xQSC PL325 AMPS
DBX PA+
2xQSC K12 Monitors
AutoTuba 10" Driver (Building Soon)

88h88
Posts: 1606
Joined: Mon Jul 04, 2011 10:20 am
Location: Coventry, UK

Re: 2x T60 @ 18" and a pair of piddly little OT12s

#5 Post by 88h88 »

on1sony wrote:photos?
Of the setup? Sadly not! Was too busy stressing! :lol: Next one is in August and I'll make sure to get a stack of video and loads of photos.

Jools4001 wrote:
88h88 wrote:t. The bloody IEC had come loose somehow... Connection sorted and it was back to the tunes.
Nice report!

Google "locking IEC connector" - loads of suppliers have them, they lock into standard IEC sockets and they're stupid cheap.
I'll look into those, thanks!
4xOT12s, 2xT39s@22", TTLS@18", 2xT60@18"

Disco-inferno
Posts: 219
Joined: Thu Mar 15, 2012 6:19 pm
Location: Tilburg, Netherlands

Re: 2x T60 @ 18" and a pair of piddly little OT12s

#6 Post by Disco-inferno »

yeah, the "it's not loud enough" remark, the average Joe isn't used to stupid clean, near high end type of sound! usually they understand the nonsense of their remark when they notice they can't even understand what I'm shouting from a little over a foot away :roll:

Titanium Hand
Posts: 559
Joined: Mon Sep 05, 2011 4:32 am
Location: Sydney, Australia

Re: 2x T60 @ 18" and a pair of piddly little OT12s

#7 Post by Titanium Hand »

Nice Work :clap:

You have set a goal common with myself - possibly many other forum go'ers too; totally achieved it, with the help of Bill Fitzmaurice wizardry!

I bet you're feeling pretty pleased with yourself 8) Promoting your own gig with your own made sound rig.

If I ever make it across the pond I'm coming to say hello!

once again.... GOOD AS!
Built 2 x T39 Lab 12 loaded 457mm wide, 29inch Wide Dual Lab 12 Loaded T60 and 2 x OTop 112 2512 Melded. Powered by N.I.TRAKTOR Pro 2.6 (2.6.1 has too many issues) TRAKTOR KONTROL S2 Crown XTi2000

MissileCrisis
Posts: 1128
Joined: Sat Dec 15, 2012 1:30 pm
Location: Walnut Creek, California

Re: 2x T60 @ 18" and a pair of piddly little OT12s

#8 Post by MissileCrisis »

Disco-inferno wrote:yeah, the "it's not loud enough" remark, the average Joe isn't used to stupid clean, near high end type of sound! usually they understand the nonsense of their remark when they notice they can't even understand what I'm shouting from a little over a foot away :roll:
Forget "near" high end. IMO Bill's designs are the epitome of High end (among speakers that can go loud). I have yet to hear a better system (besides in specially treated audio rooms) than my current one which has a pair of TLAH (2$ woofers and 2.40$ tweeters) and a T60. Everything you look for in hi-fi is there, imaging, clarity, 0-distortion, and for me loud but accurate bass. I dare someone to come up with a better design that can also put out concert level sounds with less than 400 watts (total).

/end rant

Seriously though, thank you again Bill for making these designs and selling them for a modest amount.
Built
2 x TLAH
1 Titan 39 (lab 12, 15 inch)
1 Tuba 60 (lab 12, 20 inch)
SLA Center
2 x Mini MLTP subwoofers
1 x 212 TH (custom)
2 x Mini-Karlsonators
Owned, but not built
2 x Jack 12 (2512, melded)

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