T39 x 20 x 3012LF Super Lite ( with DR250s )

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Harley
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Joined: Mon May 08, 2006 2:45 pm
Location: Christchurch, New Zealand - Authorised BFM Cab Builder

T39 x 20 x 3012LF Super Lite ( with DR250s )

#1 Post by Harley »

T39 Lite
508mm ( 20" ) wide
18.5 Kg (42lb)
3012LF
9mm (3/8") Italian Poplar on all panels except Woofer panel
3 x 1/8" ply bracing internal except for moth opening ( 2 braces )
Duratex finish.
Hand-hold on bottom plate and at back of top/top of back.

Here they are
Image

Sound test - the desk;

Mackie DL1608 desk Oh Yeah! managed with iPad and sound source a recording on iPhone :clap:


Image


Amp: Crown xTi 2002, high paseed 45 Hz, crossover to DR250s 100 Hz

Here's the set up. My old T39s are there as well for comparison

Image

We also ran my friend's very expensive German KS speaker set which you can see in the picture.

We ran these outside at insane volumes - just to prove we could do that, can you spot the nearest neighbour?

Image

Image

:noob:

Result:

The KS system was loud with loads of bass ( you'd expect that for $13,000 !! :shock: ) but the bass was reall dominant and at various points quite messy.

The T39 with DR250s.

Took a while to eq properly but once done;

LOUD, but clean and articulate, no-boom, no rattle, no panel drumming in the subs. HEAPs of headroom even at almost unbearable volume 80 feet away ( iPad level showed amp just on 0.dB gain !! ). Bass was so clean you could listen to it all day. It was so clear that from the recordings we played, at 80' away, I could tell what bass the artist was using ( Mostly P Bass, Jazz and one recording with EB-MM-SR )

Then we V plated the subs - WOW - what a difference that made to the bass quality - it sort of made it more smoother all-round.

Image

The bucket on top was to weigh the V plate down as it had no screw attachments.

The super lite construction stood up well and posed absolutely no problems whatsoever.

Conclusion; If you want a super lite set of subs for your band that will do both indoors and outdoors, these are the ticket. There's more than enough grunt in these and if you have the room, do 4 as the DR250s still run away from just two if you let them do that.

One of the scariest gambles build wise I have done BUT certainly the most gratifying result at sound check time.

Thanks to my good friend Ivan whose venue we used.
Last edited by Harley on Tue Oct 02, 2012 1:57 am, edited 2 times in total.
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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Harley
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Joined: Mon May 08, 2006 2:45 pm
Location: Christchurch, New Zealand - Authorised BFM Cab Builder

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#2 Post by Harley »

Oh...and here's a really strange thing.

When we fired up my T39s, a bee appeared straight after we turned the volume up, then another, then another until there were about 50 of them buzzing around the subs.

Image

You could say that my subs are so good, they're making a bee-line for them :loler:

But, why the T39 subs? When we turned the music off to pack up - they disappeared. They didn't come when the KS system was running.

I can only put it down to a couple of things. Either;

They were annoyed and wanted to kill the source ( but they didn't act agitated )
They liked the smell of the new Duratex
They liked the sound, and thought what a great place to build a hive.....

I have an iphone video of them buzzing about but I don't know how to post videos.
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

Gregory East
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Joined: Sat May 13, 2006 9:56 pm

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#3 Post by Gregory East »

Maybe it sounded like a big cave.
BAT10, Bad Auto Tuba. Reverse folded TAT to fit JBL 1014D, 350W driver, voltage limit unknown.

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Chris_Allen
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Location: Huddersfield, UK

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#4 Post by Chris_Allen »

Harley wrote:I have an iphone video of them buzzing about but I don't know how to post videos.
Use the link icon on your iphone when about to play the video and select post to youtube.
Built:
6xDR200, 2xT39, 2xT48, 2xJack110, 1xOmni10.5, 1xAutotuba, 1xT18, 1xSLA Pro, 1xW8, 1xW10

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DJPhatman
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Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#5 Post by DJPhatman »

:clap: :mrgreen: :ugeek:
I know money often seals the deal, but seriously, quality is an investment, not an expense... Grant Bunter
Accept the fact that airtight and well-braced are more important than pretty on the inside. Bill Fitzmaurice

Grant Bunter
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Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#6 Post by Grant Bunter »

Loving the pics, the review and the bee line :clap:

The neighbours are less than .222 distance away...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...

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Dan30
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Location: Los Angeles

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#7 Post by Dan30 »

Wow those look fantastic. The T39s really are an awesome bang for your buck sub. I wish mine were as light as yours.

NZ is freaking beautiful. It looks like heaven.
T39 24" 3012lf (1 built 1 in progress)
SLA Pro x 2
Yamaha S112V x 1
QSC RMX 2450
dbx Driverack PA

gzc_stageTech
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Location: Wichita, KS

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#8 Post by gzc_stageTech »

Great review Harley. And that venue is sweet.

I' m curious if you did an RTA of the two systems. I'd be interested to see the curves of the rigs.

I can't wait to hear the audio audition.

Thanks for the review.
Chris

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AntonZ
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Location: NL

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#9 Post by AntonZ »

1) Great subs, makes me want to get started on mine (got a pair of 3012LF waiting for at least 2yrs)
2) Your friend has a lovely place. Windows XP desktop pics shot at his property?
3) NZ bees have great taste
:wink:

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Scott Brochu
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Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#10 Post by Scott Brochu »

Very nice review :clap:

Love the landscape over there.
Drumming is a way of life.
ME LIKE TO HIT THINGS!
http://billfitzmaurice.info/forum/viewt ... 26&t=11232

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Harley
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Joined: Mon May 08, 2006 2:45 pm
Location: Christchurch, New Zealand - Authorised BFM Cab Builder

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#11 Post by Harley »

AntonZ wrote:Windows XP desktop pics shot at his property?
Not sure what you're meaning there, but ALL the pics were taken by my camera at the time.
gzc_stageTech wrote:I' m curious if you did an RTA of the two systems.
No we didn't and no we don't intend to. The system more than satisfies, BFM was overall noticeably cleaner ( once we got on top of the EQ ) and the settings we used alone alone indicated the BFM to be more efficient.

The KS system is so, so HEAVY as well.

BFM clearly wins hands down - so why get scientific? :mrgreen:
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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Dan30
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Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#12 Post by Dan30 »

He means it looks like this.

Image
T39 24" 3012lf (1 built 1 in progress)
SLA Pro x 2
Yamaha S112V x 1
QSC RMX 2450
dbx Driverack PA

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subharmonic
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Location: Mandan ND

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#13 Post by subharmonic »

I think they just liked the sweet sound.
2x T39, 1x T60, 1x THTLP, 1x AT(not built by me) 6x DR250
I need more bass

But this gal's built like a burlap bag full of bobcats
CW Mcall

Bruce Weldy
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Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#14 Post by Bruce Weldy »

Harley wrote:- so why get scientific? :mrgreen:
AMEN!

6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210


"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."

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Harley
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Location: Christchurch, New Zealand - Authorised BFM Cab Builder

Re: T39 x 20 x 3012LF Super Lite ( with DR250s )

#15 Post by Harley »

Dan30 wrote:He means it looks like this.

Image
DOH! Alzheimers' is settling in I fear. First Palmer's cat - now the famous Windows pic....what else I wonder :confused:
ImageSemi-retired: Former Australia and New Zealand Authorised BFM cab builder.

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