MC HELL

mclsound · « **on:** 5 Jan 2011, 09:09 pm »

This will be my documented build of a passive 4way that includes 2-Audio Technology custom 12's with 4"VC and a 12 " Volt(3143) for midbass and dual ATC 75/150 mids and dual Scanspeak 9700(one rear fire).It will be a 2 cabinet setup with the bottom cabinet housing the 3-12's...all front firing vents and the midbass in its own 1'cubed box within a 9.9'cubed cabinet.
Large and heavy but thats the """HELL""" part.

Letitroll98 · « **Reply #1 on:** 6 Jan 2011, 03:43 pm »

I think you should rename it WOW! Maybe that name has been taken.... Very ambitious, keep us posted on progress, perhaps you might expand a bit on you driver choice and enclosure design now though.

JohnR · « **Reply #2 on:** 6 Jan 2011, 05:22 pm »

Sounds pretty solid

Is the crossover active or passive (or a mix)?

mclsound · « **Reply #3 on:** 10 Jan 2011, 11:32 pm »

Well me and my nephew cut up lots of wood today and here is what we have...internal volume..48"h x 12 3/8"w x 30"d
1.25"mdf-sides,top & bottom
1"mdf-front and back(middle sandwich section) and bracing
1" Baltic Birch-Inside sections for fronts and back,midbass section,vent

Heavy=HELL(LOL)

mclsound · « **Reply #4 on:** 10 Jan 2011, 11:52 pm »

All crossovers are passive(12db/octave) and with the help of Chris at Solen in Montreal we are crossing:
2-12"AT /200hz
1-12"Volt/200hz-800hz
2-ATC mids/800hz-3800hz
2-SS 9700 highs/3800hz
the setup is also designed for passive triamping

mclsound · « **Reply #5 on:** 14 Jan 2011, 01:26 am »

Just spent the day cutting wood.I have started a album in my gallery.

mclsound · « **Reply #6 on:** 23 Jan 2011, 11:37 pm »

So far the rough fit looks good.All corners and edges are true.Next is putting holes in braces,vents,speaker openings and back connections.And keep on breaking in the drivers.

mclsound · « **Reply #7 on:** 23 Feb 2011, 04:19 pm »

I have been slow but its coming

Letitroll98 · « **Reply #8 on:** 24 Feb 2011, 04:26 am »

Slow, yeah! I thought you'd be done by now. I'm sure you have good reasons for not finishing yet, and I do sympathize as I'm the King of unfinished and abandoned projects. But ya gotta come come clean, how pissed is your wife not being able to park in the garage through all these blizzards?

mclsound · « **Reply #9 on:** 15 Mar 2011, 01:40 pm »

Yes Slow...I was called back to work(bulldozer) for a while(gone all week).
I got a chance to finish up the fronts and all the foam.As soon as the glue is dry,I will start on bolts and T-nuts...In the meantime,I am working on outboard rear mounted boxes for the crossovers.Picked up a Krell KSA 300s(fully recapped last March) in excellent shape(Pic shows the styrafoam from box as I just pulled it out after its 1500 mile journey).

drab · « **Reply #10 on:** 15 Mar 2011, 02:18 pm »

I think I see at least two places where you could have put more clamps on that baffle. Now you are just getting lazy!

On your midbass crossover section, conventional wisdom would suggest not laying two inductors on the same plane. It may or may not make a difference but if you could stand one on edge and "point" it perpendicular to the other you would be better off.

mclsound · « **Reply #11 on:** 15 Mar 2011, 02:33 pm »

Yes,thankyou drab

mclsound · « **Reply #12 on:** 16 Mar 2011, 11:55 pm »

The gall darn "Day Of Nuts"

mclsound · « **Reply #13 on:** 25 Mar 2011, 03:09 am »

well things were coming along when the router had a shit fit and screwed my fronts so i have to make some new ones.Crossovers are coming along and should have some sound this weeknd

Letitroll98 · « **Reply #14 on:** 25 Mar 2011, 03:14 am »

That is looking mighty impressive there mcl. In the pics it's hard to see where the router messed things up, what happened?

mclsound · « **Reply #15 on:** 25 Mar 2011, 03:25 am »

well I have put a half inch front BB that gives the speakers a inset impression but the router had a mind of its own today.I will either repair them or cut new ones tomorrow...i have not taken any pics of my screwups yet..LOL

mclsound · « **Reply #16 on:** 27 Mar 2011, 07:25 pm »

Well 3 big guys later and a long night and ""WE HAVE LIFT OFF""......I was missing alot of lower information on my old speakers(my own design falt)...Well I have it now,loads actually..I think the KSA 300s has met its match(I think somewhere in the 500w/ch area should suffice)...the AT drivers and crossovers need some breakin time,but now you can throw on any redbook,audiophile,or SACD and this system rumbles,yet has lots of details.Time for some Blackfoot and Molly Hatchet.

WGH · « **Reply #17 on:** 27 Mar 2011, 08:53 pm »

Very impressive!

mclsound · « **Reply #18 on:** 21 Jan 2013, 01:19 pm »

Hi Guys
Its been a while and I am about to venture into 3 NEW projects,2 of which will include 4/18's each(crazy-I know)..One will have 4 JBL 2245's and one will have 4 Aura NS-18's.Go big or go home I say(LOL)
I will through in some documentation later.

TF1216 · « **Reply #19 on:** 21 Jan 2013, 02:55 pm »

mclsound,

Would you mind sharing your thoughts about your AT, Volt, ATC, and Scan-Speak speakers? What do you think about the AT woofers?

Did you ever take measurements of the entire system?