the HouseWrecker. 11hz Twin CVX-15 Tapped Horn - Page 3

Yeah - it's been about 5 years since I had real bass at home. In large part I bought this place with an eye on the acoustics and placement for subs/speakers/etc for the the living/media room - its layout rocks. You do need to visit.

Working on the manifold and through hole now - took time away during the hollidays. Back to work!!

Ok - so after a hiatus, famillial alterations, new additions, and other stuff - we're back at this.

Attached are a couple screenshots of Mikes cleaned up through wall transition - with reflectors. It's now buildable!

I'm pulling cut sheets and getting to work again. Expect more project photo's soon!

Appologies for the gap in time there.. Life and all that.

Thank you. We're looking forward to it for sure! It's definitely not the average tapped horn build. I'm ripping out half the wall between the living room and garage - building the sub into the house. Gotta give it to Mike for taking so much time to help! He's a great good human.

This one will break the house. Shoot - modeled plus almost !!30dB at 10hz relative to theBeast MK-IV, and +10dB at 20hz relative to a DTS-10 without it's concomitant 10dB free air sag to 10hz (or +20d at 10hz relative to DTS 10 model) - theHouseWrecker is definitely gonna be nuts!

TheBeast broke a 3rd story bathroom window at a SoCall Bass List Meet back in the day. Other versions have broken tons more. Dropped entire kitchen cupboard contents onto the floor. Split drywall seams. Popped drywall screws through drywall. Chunked plants on the floor, photo's off walls. Broken a sliding glass door. My favorite casualty - LITTERALLY, was my neighbors Chandeler!

We'll probably have the local constabulary at the door every time I fire theHouseWrecker up! I'll be sure to keep my business cards at hand as Mike keeps chiding me too .

89dB 2.83v@ 11hz 1m G/P model. ~~ 1000 watts inside x-max / 125dB 1m gp at 11hz inside of excursion. With (Edit I looked at it again. 20dB@10hz, 11dB at 20hz..) of gain at the listening position relative to a 1m g.p. outdoor measurement at 10hz - (that includes the 5 meters distance in room to chair - measured from that corner) this may well just be a little........... Excessive... I can't wait!

I do believe theHouseWrecker will be a fitting upgrade from the various versions of theBeast - I owe Mike a debt of gratitude..

Currently I have an old used 1,800 watt Proffesional series amplifer I nabbed for almost Free. 4 sheets of Auraco 3/4" plywood - likely to become 6. 1 sheet of OSB for bracing. 6 tubes of adhesive purchased - 3 used thus far. Bunch of wood screws. Mmm... 2 Kicker CVX-15" 4 ohm drivers. Connectors, etc. Not sure total cost - but less than purchasing a DTS-10 kit and drivers. I don't think I'm at a total of $700 in materials and drivers yet. (based on online retail MSRP of CVX's.) I'll look at actual components involved and do a real estimate to duplicate this weekend if I can.

Have more photo's of it on my FB page - and the rest of the HT (not yet finished). The mains for the HT are wicked fun. WMTMW's using drivers I designed for work (and system) that kill the Kripsch THX-Ultra2 system. Measured at listening position - with zero room treatment - in listening location, they do ~~ 115dB from ~~ 25hz through 22k per each with 75 watts (more on the powered woofer sections obviously) under 10% thd - roughly +/- 2dB for most of bandwidth, bout +/-5 in L/F including room. pick of front stage (again unfinished) attached.

If you want to add me look for Deon Bearden in Stillwater OK - put theHouseWrecker or AVS Forum in the note from the add request.

You have a message..

First and foremost understand I do not represent myself as an agent for my company - I am purely a 100% audio geek - with one of the most awesome jobs in the country. See my profile.

The drivers are all Kicker. MTM sections made up from speakers we released for Marine applications - called KM6500.2, and KM 6500's. I put a LOT of energy in these - they exceeded all my expectations. I'll attach an SPL graph - this INCLUDES all room reflections, is 4.5 meters from the couch - no room treatments mic in front of couch pillow were head sits, and shows 2'nd and 3rd harmonics at lower than anechoic (-40dB or greater is less than 0.3% HD).. The amplitude response shown is with Audyssey disengaged - and this is passive crossovers. I have ~~ 450 watts per center section (150 each driver) - and 450 per woofer heading for the front three soon - it will be full DSP active when I'm done.

The highs are a 1.7" Ti compression driver on a 1" throat 1.4k hz 60x90 pure Tractrix horn. It has no Diffraction slot - I spent lots of energy FEA'ing that one. It's darned good. Horn has a 65mm bolt hole pattern that matches a 6'5" bolt pattern. (IOW designed to bolt into same cutout) They fit in wake board tower cans.

Those are crossed over to a double neo motored 6.5" mid. 20mm coil, 8mm gap N42H Neo slug above and below (almost zero flux modulation under normal use) - over 1T through the gap. It is a TRUE 90.5dB SPLo, 6mm x-max mid. Coil is 1.5", kapton, spunlaced nomex collar - coated with black polyamide. They also fit wake board cans.

Through the network the MTM section is good for 94dB 1 watt. Its power and polar response rival some other companies THX U2 system - and distortion is far lower. Worked HARD on those mods.

The woofers are CVX10's.

Yep - those are front wides driven by Audyssey DSX . They use the same transducers and crossovers as the mains - minus the powered woofers.

I built the baby gate from dowels and two by fours. Center section easily lifts out. It's a life saver.

This isn't something to replace different methods of achieving high SPL low bass - or that I'm advocating other people should build. I won't get into that discussion. I've already built just about every other type of insane sub there is. So far - a well done tapped horn sounds better at a given SPL than any other method I've used for a given driver compliment - so I'm trying my hand at an over the top variant. This is my expiriment and foray into the world of Excess Deep Bass via Tapped horns.. I'm doing it for my own fun!

I am also using dead space in my garrage corner. As it happens - it is the perfect distance to drop the final flare into the livingroom -in the livingroom corner. The in room flare is less than ~~5 cubic feet of room consumed - only protruding from the wall ~~ 16"s.

Realistically - I couldn't afford all the amps and transducers required to hit the SPL this will at 10hz in an I.B. I'm taking relatively affordable very decent car audio transducers - and showing what U can do in a tapped horn with them. Auto aftermarket transducers are Ideal in many respects for Tapped horn apps. Tapped horns love tuning ~~1 to 1.5x octave below Fo.

That - and we're looking at potentially in excess of 130dB capabillity at the listeing position 5 meters away - from a single amp and pair of drivers down to 11hz, - total cost to build including drivers and power less than $1.5k for a consumer. Less than 1k if he has amps already. And even less if her were creative.

Another thought - I also have two drivers on in inroom manifold, and an additional 3/4" ply sepperating the home from garrage. Drivers set IB in my attick will leak serious cold / heat depending on the time of year. And their performance will vary continuously with attick / garrage temp. These won't.

Plus -I'm not doing this for average joe. Just me. If you've seen me around before (Audionuttt / dr-Bass / etc ) - most of the things I do are a lil excessive in the bass department...