My Bedroom Rig Grew into a monster!

Discussion in 'Amps and Cabs [BG]' started by flameworker, Jan 4, 2015.

  1. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    It all started when i got tired of recording thru Headphones..

    So I added some phillips desktop monitors with a little sub, I was amazed at the sound of the tiny sub.
    Had to have a sub,,,

    Here is what the pile of stuff you are looking at is, and what it is about to be. I haven't plugged it in all together yet, still working out the ohm math. Dont want to blow anything up.

    Art Tube Preamp, 12ax7
    Flying Mole Dod M-100 Power amp 140watts @4 ohm, 100 at 8. Got from a member
    2 Bose Acoustimas 5 2x2.5" 100-200 watt speakers

    Ross 2x5" mid bass drivers in custom sealed box, 100 watt, with variable ohm switching.
    2 DAHLQUIST DQM 9c full range speakers
    bass reflex system with dual, rear-firing tuned ports
    8" Magnat woofers made in germany
    8 ohms impedance
    200 watts power rating
    Freq response 37-22000 Hz
    90 db SPL

    and then line from preamp into
    BIC v1220 12" Long throw down firing ported subwoofer, powered 430watts/200rms Bash Plate Amp
    The guy I got it from was using it as part of his bass rig, he plays a PorchBoard bass as well, and was using an old Fender Bassman 50 watt thru a 10" speaker on top of this. Impressive, especially for being a home theater product. Together they sounded amazing, really. He brought it to gigs in one of those cube shaped Rack boxes with a custom foam insert, I may buy that off him too, $50 is a good deal for a Gator rack cube with the suitcase handle, yes?

    This is too heavy to move around, each Dahlquist weighs 58lbs! They feel like they are made of concrete. Question, The top half, where the tweeters are, are packed full of fill, and there are 2 ports on the backs. Can I literally chop them in half,(see the saws-all in the backround?!?!?) then attach them together ? or do I need all those liters to get the same sound with those ports? Can I chop them maybe with a circular saw, and put a 1" thick piece of birch plywood on top, making 2 nice cubes? That would be the lazy way, I'm actually building a baby blue SWR cabinet, and these should be a close match. Its to go on top of an SWR Workingpro 15 loaded with a Kappa 15A, powered by a SWR redface 350. But that is my gigging rig and I want it separate, boxed up and ready to go, I hate having the extra step of breaking down and setting up to practice (i'm getting old).

    I am planning on putting the Acoustimas 1" speakers into a small motor driven box with openings on either side to put microphones, should make a cool doppler effect if I cut the other speakers off except the sub at 150-100, does anyone know the threshold for hearing direction? I think its 150. I might move the 8" speaker to opposite sides of the room, then using a stereo mackie mixing board (would I need another power amp?), run the mic line back to them, that should make some proper Leslie action.
    All I could come up with is to use a fan with a fan belt and a reduction gear on a dimmer,Question any other ideas on how to spin that little speaker?
    One more question, how are those Magnat 8" speakers able to get down to 37hz? is that bull, or the cabinet? or what? I hear they are popular in germany, they look great, cast frames, direct solder connections, heavy duty stuff.
    I took the Ross thing and added about a 8 liter box, I popped the back off, and attached it to the front of the box, its sealed. I might should have put some fill in....

    Well, its too late to try it now without getting a noise complaint. Update tomorrow morning,

    I was originally going for a mini rig of doom...Well lets see if I can Chop those 8's and hopefully they will be deep enough without the sub on their own, I found the Dahlquist's at a Habitat for Humanity Re-Store for 20$ so Win!
    Total Cost of Rig

    Powered Subwoofer
    Craigslist $50 -Value 200
    Magnat 2 8"
    Habitat $20 Value 300-500, new in the dahlquests they were crazy stupid$ still need refoaming, I did my best with contact cement and 5 different kinds of weather stripping foam..meh.kits cheap.
    Bose 2x 2.5
    Free (found it)
    Flying Mole Power Amp
    TalkBass Member $80 I think, maybe 100.cant recall New price $650 (used does not exist)
    Art 12ax7 tube Preamp + upgraded tube(free tube)
    Music Store $40
    Ross 5" Drivers ...value maybe $40-50? good drivers,look like a bag end.(4" mag)
    Free (had em),just had to make a bigger box, were a mic stand mountable vox monitor

    total price 190. if I bought everything at retail about 1300.. Hmm, I feel like you can get a decent second hand practice amp for that an ampeg b15 or something.. well it would be 140 without the sub, so....I hope this thing sounds amazing all together, i know the speakers are sick, and the power amp is wicked for being so small, preamp is..well it is what it is.

    OH, new plan, make a two 8" and a 5" cabinet, save one 5 for later, that will be really close to a baby blue cab!!!! I even found some cheap seafoam carpet at the re store to tolex this stuff!
    What it is about to be

    A single two by eight inch cabinet with a single 5", built close to Baby Blue shape.
    Mount the Mole into it (its so tiny and light it wont matter) Cutting a Slot recess in the top for the ART to pop into (or maybe building that right in too)

    Covering the 2 x 8 +5 with Seafoam Carpet, and Doing the same with the Sub and the WorkingPro15 so they all match. Modular.

    Oh, the little phillips and the bose 901 are for my mini bedroom rig, All I probably needed all along....

    Last edited: Jan 4, 2015
    Winfred likes this.
  2. JimmyM

    JimmyM Supporting Member

    Apr 11, 2005
    Apopka, FL
    Endorsing: Yamaha, Ampeg, Line 6, EMG
    Holy cow!
    flameworker likes this.
  3. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    score, looks like i can sell the crossovers and the tweeters, even the ridiculously heavy cabinets from the dahlquist's on ebay and recoup almost all my $!

    And they are actually 9" speakers. Crazy germans.. Perfect!
    Last edited: Jan 4, 2015
  4. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    Thanks, i can't wait for my proper rig bits and pieces to come!! Ordered a few Selenium 8's from partsdirect, have 2 full sheets of plywood, got the SWR 350 red coming from ebay, and I have a gift card for a speaker I haven't decided on yet, really want one of those neo 15 low boys the greenboy enclosures call for.. still short funds for that tho. A subwoofer of some kind is what that card will become.

    Really, the sub and the 5's should be good enough, I just happened opon those Magnat drivers on my way home today.

    Also , do i just hook up a multimeter to my series/parallel wired groups of speakers to test ohm? what should it say? 6.5 is close enough to 8? i almost blew my amp hooking up to a 1.2 ohm sub once.
    Last edited: Jan 4, 2015
  5. friendlybass


    Jul 19, 2012
    Wanna buy my baby blue monitor lol
  6. Dug2


    Sep 24, 2011
    man....i cant see that dark red stuff at all. i prolly need glasses i guess? idk
  7. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....

    I'm going to give another go at building one first, got some super thick Birch plywood and I'm following all the manufacturers specifications. I was going to try and compensate volume/port size to match drivers more closely, but it will be easier to try knocking one up.

    You have the Baby blue cab that went with the electric blue head? Thats what i'm copying, too bad you don't live closer, When it's done i would love to compare the cabinet I made with the real thing head to head (ho!, not a pun) and see how close i got. I think these Magnat drivers are closer to the original 8's than the Selenium 8's I was going to use originally, and I just found out they join the wood in the cabs with DADO joints (like checkerboard notches cut in sides that interlock, if I understand that correctly)), Liquid nails, and brads.
    I love both of those pieces of gear.

    I Couldn't find an Electric blue, but I did get a 90's Red Face SWR 350, pretty close, much closer than a redhead or those 400's anyway. And bonus of more watts.

    I will not allow myself to hook up this rig til my bedroom is clean tho...

    If that is a real offer to sell, than most surely yes! PM me.

    My favorite is the Baby blue monitor, with a bag end 15 under it.
    My buddy used to use an Electric Blue with 2 Bag end 15's. I never knew you could get that loud with so few watts. I dont know if they were wired series or parallel tho...

    Oh, and I poked my elbow thru the right hand 5", fixed it with gorilla duct tape. That stuff works pretty well for it. I'm concerned that it might cause coil rub tho.
  8. friendlybass


    Jul 19, 2012
    Yeah the 2nd version with the celestion 8s and the bag end 5. PM sent
  9. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    Friendlybass is the best!

    I'm still going to build a copy.
    Happy day!
    Almost missed it thinking that was sarcasm, then I realised, you can't type Sarcasm!

    New small rig will be

    SWR redface 350 OR Flying mole+Art preamp
    baby Blue monitor , 2 8" and a 5"
    That Sub thing, soon to be replaced with a 1 15 or 18.
    Last edited: Jan 4, 2015
  10. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    OK, my dream of building my own Baby blue combo just got a lot more realistic!!!

    OK, >>i'm starting a thread for the build,,,, no, I guess i'll leave it in this one.

    1. Remove cover from the ART tube preamp.
    2. Mount it along with the Flying Mole in a case of some kind. Right now I have them attached to a board.
    I intend on having everything on the board in a little black carpeted case the size of an Electric Blue.
    Unfortunately the ART requires an AC wall wart adapter, so I have to put that in the enclosure too, or else it will require 2 plugs and that could cause minor hassles at shows....

    Now, where to find the hardware to make one of those little carpet covered boxes with the latches...Maybe amazon sells latches and little corners, I'm not sure what they would be called... Latches...snap connector? Lever latches? trunk fasteners? I'll find them somewhere or get a smallish trunk and rob the latches from it.

    That will give me a [email protected] (same as electric blue) preamped by 12ax7 tube(same as electric blue).... I still need a 3 band semi parametric EQ, a Compressor/limiter (has to get put in the box too), and unfortunately I won't be able to have an Aural Enhancer, unless I manage to find and copy the circuit in my redface 350.

    Place that gently on top of a proper BabyBlue monitor, and a second(crossing fingers) Baby Blue monitor copy containing the 2 Magnat drivers, and the 5" Ross.

    This will be a perfect compliment to the bass i build around a Warwick Thumb Neck!
  11. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    Holy Cow! ok, I am starting a thread for it.. I just noticed I had my foot on a box with very similar hardware... not as nice, but close. 20150104_214824.jpg

    Now I can just pop the rivets off and build a longer box! That is STRANGELY perfect. How odd, it's a Hookah Case someone gave me, containing a broken hookah, I didn't want it at the time, already have too much junk, it's almost exactly the right size(except length) I will use the corners too,but with brass screws in place of the rivets. should look finished and clean.
    Does anyone know what ornamental angle aluminum or latches are called?
  12. Means2nEnd

    Means2nEnd Supporting Member

    Well at least it's portable and easy to move.
  13. Wait... is that an open fireplace in the background!?
  14. SteveV74

    SteveV74 Inactive

    Jul 24, 2012
    Oh sorry, I thought by the title of this post there would be dirty pics,lol.
    S-Bigbottom likes this.
  15. SirMjac28

    SirMjac28 Patiently Waiting For The Next British Invasion

    Aug 25, 2010
    The Great Midwest
    I got nothing.
  16. Dominick C.

    Dominick C.

    Jul 2, 2012
    Austin, Tx
    I don't like mean people or mean comments....
    so you are buying the BB monitor? You should. :) here is another blown up BB rig I had. the monitor ran off the BBII and the bigben off the power 750 sometimes I would run stereo to a Silverado 4x8.

    flameworker likes this.
  17. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    Yep, well it's a woodstove, but I thought showing it open would add some nice ambiance, don't worry, I don't turn it on there, too hot, just for the picture!
    If you look closely, there is the remains of the last bass i build as kindling (the leftover parts) of my idiot roomates (Who arent supposed to even go into my wood stove/bar/practice / living room area used some of my really nice spalted maple boards to kindle a fire the other day.

    YES the Monitor is soon to be MINE PreCiouS! I loves the precious!! started a new thread where I'm assembling the amp components into an electric blue sized/shaped carpeted box. I even found(With member help) the 3 band semiparametric eq as a kit for $100, and I got a Spectrum Enhancer ( a cheapo berringer thing) from ebay for 15 bucks shipped just now. Should have a decent BB2 clone soon.
    SirMjac28 likes this.
  18. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    The Big Ben is another future CAb copy I'm Planning, that will be much easier, I got an 18" POS (is that right? sounds..wrong..PAS!) PAS driver for 20 bucks with a coil rub tho. Apparently the multi meter looks right but it has a rub, I'm hoping I can carefully take it apart and reshim the voice coil, but with my luck it will probably need a reconing.

    What you have set up there is pretty much exactly my planned rig, except I'm using a 93 bass 350 and I havent worked out how to power the BigBen copy, may my new Bash 430watt plate subwoofer amp would do.

    I'm also bidding on a Goliath 4 10, one of the III models with the cream colored cones. Its a local pickup only, 2 hours away, and has been at 105$ with me winning for 3 days, I wont have the INSANE gear you were rolling, but that will be a damn decent SWR vintage collection.

    I would LOVE to have the Golath and the Big Ben be able to live at the studio, and then have the BB2 at home (plus I could keep it as a full time practice cab, never worry about it getting wrecked blown or stolen) This is coming together nicely.

    Last edited: Jan 5, 2015
  19. flameworker


    Jun 15, 2014
    Landenberg, Pennsylvania
    one day....
    If you think thats silly, you should see the stuff that didnt make the cut that I either trashed or moved, or gave away or whatever in the past few weeks.

    I tried--
    Big old Sony 3 ways with 10's.--- Not suitable, looked good til I pulled the speakers, teeny little 25 watt things or something
    Realistic monitors, the ones with the 4-5"
    Monstrous Infinity Cabinets, Mark 7 or something, weights over 50 pounds each, got em home to find not only were the surrounds toast, they were legitimately blown as well. Pita to fit in my hatchback too.
    Marantz Cabinets. Big worthless, heavy and still in my room
    Phillips studio monitors (the ones that match wee sub)-doing great as stereo speakers now.
    The powered sub from a Bose didn't work well, snap. crackles and pops, boomy, useless.
    A JBL 15" w horn speaker main, one of those tidy clam shaped ones that sit on a pole. I even cut off a porch umbrella and drug the weight all the way in,. Got it cheap, tested fine...wife said, UGLY-get it out of here, now. gone.
    too many failed experiments to even type, these are all in the past few months. I have 4 sets of speakers in various states of disassembly in my room now (Wife is away!) ant the resulting tools and pillow is speaker fill... I keep stepping on mounting hardware...

    BUT all of those experiments led to this thread, which led me to FriendlyBass , and NOW i will soon have the PREcioUS! BB2Monitor, so Here is my new quote regarding failed experiments, I stole it from a movie.

    Flipping over rocks and finding nothing 100 times are not failed experiments!
    SirMjac28 likes this.
  20. SirMjac28

    SirMjac28 Patiently Waiting For The Next British Invasion

    Aug 25, 2010
    The Great Midwest
    Not silly at all when I read it the first time it was a lot to take in and I couldn't come up with anything which is a first :) many inventions were discovered doing exactly what you're doing here so keep us posted.
    flameworker likes this.