Stereo Subwoofers with 4 ASCENDANT AUDIO 12" drivers each

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  • jcaut
    jcaut Posts: 1,849
    edited September 2005
    Those look GREAT!

    I've always wanted to try something like that, but the size and the $$ makes it unrealistic for me at this point.

    Congratulations! Hope you get the sound you're looking for!

    Jason
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  • hoosier21
    hoosier21 Posts: 4,413
    edited September 2005
    dholmes wrote:
    Are you going to connect them at your pre-amp in-out & run your spk at lg?

    Preamp connected to the Outlaw ICBM (crossover), then from there HF outs to Speaker amp, and subwwofer outs to subwoofer amp. right now they are crossed over at 80hz.
    Dodd - Battery Preamp
    Monarchy Audio SE100 Delux - mono power amps
    Sony DVP-NS999ES - SACD player
    ADS 1230 - Polk SDA 2B
    DIY Stereo Subwoofer towers w/(4) 12 drivers each
    Crown K1 - Subwoofer amp
    Outlaw ICBM - crossover
    Beringher BFD - sub eq

    Where is the remote? Where is the $%#$% remote!

    "I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..."
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  • 95Honda
    95Honda Posts: 77
    edited September 2005
    I'm running the ICBM also. I like it very much. It sounds great and is really flexible. Next step up is a Bryston 10B sub, but $2,500 is too much for a crossover for me right now....
    www.forceaudio.com .... We cut through the BS.
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  • unc2701
    unc2701 Posts: 3,587
    edited September 2005
    95Honda wrote:
    I'm running the ICBM also. I like it very much. It sounds great and is really flexible. Next step up is a Bryston 10B sub, but $2,500 is too much for a crossover for me right now....
    no affil:
    http://cls.audiogon.com/cgi-bin/cls.pl?spkrfull&1131320279

    $800 for a 10b
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i
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  • 95Honda
    95Honda Posts: 77
    edited September 2005
    10b sub, different than 10b...
    www.forceaudio.com .... We cut through the BS.
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  • amulford
    amulford Posts: 5,020
    edited September 2005
    Nice. I like you eased the corners, and the prep for the paint is very nicely done. It looks like the cabinet is one piece molded. That took some time.

    Wait'll they break in :D . Whaddaya gonna push 'em with? Are they proving out what you wanted?
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  • VR3
    VR3 Posts: 28,747
    edited September 2005
    Dude those look like they could warrant a "Beware Of Sub" sign to go on the fence out front. Holy crap, absolutely mean looking. Awesome job!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • unc2701
    unc2701 Posts: 3,587
    edited September 2005
    95Honda wrote:
    10b sub, different than 10b...


    that's a 10b sub, but there's a few 10b's on audiogon for less than $1000, too. if you want to go new, lemme know- a friend of mine is a dealer.

    hoosier21- was that crown intended for this project?... 'cause if I were you, I'd hang onto it and figure a way to put it in another room where the fans won't matter...
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i
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  • hoosier21
    hoosier21 Posts: 4,413
    edited September 2005
    Well it looks like the Crown amp is here to stay, nobody wanted it. I opened the hood, found both leads to the fans and they had little plugs, unplugged them, no fan noise anymore. The amp only gets slightly warmer than room temp even when playing at loud volumes for a long time. The only way I can get this amp to get "warm to the touch" is by leaving the main speaker's amp off, and running the subs a idiotic levels, with a bass heavy CD. So my fix should be ok under normal conditions.

    Also, the subwoofers are breaking in very nice. I was a little concerned about the low feq. output, but with more playing time, they keep digging deeper and deeper. I was complaining to a few Polk members about the deep bass, but that is going away.

    After living with these for a week or two now, I am very satisfied with this project.
    Dodd - Battery Preamp
    Monarchy Audio SE100 Delux - mono power amps
    Sony DVP-NS999ES - SACD player
    ADS 1230 - Polk SDA 2B
    DIY Stereo Subwoofer towers w/(4) 12 drivers each
    Crown K1 - Subwoofer amp
    Outlaw ICBM - crossover
    Beringher BFD - sub eq

    Where is the remote? Where is the $%#$% remote!

    "I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..."
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  • madmax
    madmax Posts: 12,434
    edited September 2005
    Something you should keep in mind about the heat. The case doesn't get hot because there is no real heat sink in there to spread out the heat. Well there is but they rely on the fan to spread it out. You really need to have some air blowing. You can get some resistors, cut the voltage down a bit and the fan will still spin maybe at half speed but you won't be able to hear it.

    My point is that the actual fet or transistors are way hotter than you think. A future problem for sure.

    There are better ways to do this but a quick and dirty way to pick a resistor is to measure the resistance of the fan. Buy a 10 watt (or larger) ceramic resistor with the same resistance. put it in series with the fan. This will be about 1/2 voltage with should be enough. Really about 1/3 the fan resistance might be better. The fan probably runs at 12 volts dc. MAKE SURE IT IS 12 V (NOT 120V AC) BEFORE YOU ADD THE RESISTORS.


    madmax
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D
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  • hoosier21
    hoosier21 Posts: 4,413
    edited September 2005
    thanks MM, I will work on it after Polkfest 2005.
    Dodd - Battery Preamp
    Monarchy Audio SE100 Delux - mono power amps
    Sony DVP-NS999ES - SACD player
    ADS 1230 - Polk SDA 2B
    DIY Stereo Subwoofer towers w/(4) 12 drivers each
    Crown K1 - Subwoofer amp
    Outlaw ICBM - crossover
    Beringher BFD - sub eq

    Where is the remote? Where is the $%#$% remote!

    "I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..."
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  • unc2701
    unc2701 Posts: 3,587
    edited September 2005
    +1 on what madmax said... Get a front panel temperature controller for a computer... you'll have to ghetto wire an external power supply to it, but for like $50 you can get one with temperature probes and fan control. Put the probes on the output transistors or whatever heatsinks there are inside the case and have the fans cut in around 60 degrees c (80 degrees c is where most elec parts fail).
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i
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  • hoosier21
    hoosier21 Posts: 4,413
    edited September 2005
    unc2701 wrote:
    +1 on what madmax said... Get a front panel temperature controller for a computer... you'll have to ghetto wire an external power supply to it, but for like $50 you can get one with temperature probes and fan control. Put the probes on the output transistors or whatever heatsinks there are inside the case and have the fans cut in around 60 degrees c (80 degrees c is where most elec parts fail).

    Don't think so, crap, you guys got me thinking of selling again.

    Does anyone need a pro amp??!!
    Dodd - Battery Preamp
    Monarchy Audio SE100 Delux - mono power amps
    Sony DVP-NS999ES - SACD player
    ADS 1230 - Polk SDA 2B
    DIY Stereo Subwoofer towers w/(4) 12 drivers each
    Crown K1 - Subwoofer amp
    Outlaw ICBM - crossover
    Beringher BFD - sub eq

    Where is the remote? Where is the $%#$% remote!

    "I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..."
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  • unc2701
    unc2701 Posts: 3,587
    edited September 2005
    Still tempted, but the woman isn't going to go for another ugly, noisy piece of equipment in the living room... (or the subs that I would be using it to drive...)
    Gallo Ref 3.1 : Bryston 4b SST : Musical fidelity CD Pre : VPI HW-19
    Gallo Ref AV, Frankengallo Ref 3, LC60i : Bryston 9b SST : Meridian 565
    Jordan JX92s : MF X-T100 : Xray v8
    Backburner:Krell KAV-300i
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  • madmax
    madmax Posts: 12,434
    edited September 2005
    Just fyi,
    My 1250 watt carvers had a high/low fan speed switch. Low was pretty much inaudible unless the room was dead quiet. They were running only a little slower than high speed.
    madmax
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D
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  • hoosier21
    hoosier21 Posts: 4,413
    edited September 2005
    madmax wrote:
    Just fyi,
    My 1250 watt carvers had a high/low fan speed switch. Low was pretty much inaudible unless the room was dead quiet. They were running only a little slower than high speed.
    madmax

    Like I said when post the amp for sale, I didn't research it enough. I was "thinking" the fan would be variable speed, or have a high low setting.

    Oh well, live a learn
    Dodd - Battery Preamp
    Monarchy Audio SE100 Delux - mono power amps
    Sony DVP-NS999ES - SACD player
    ADS 1230 - Polk SDA 2B
    DIY Stereo Subwoofer towers w/(4) 12 drivers each
    Crown K1 - Subwoofer amp
    Outlaw ICBM - crossover
    Beringher BFD - sub eq

    Where is the remote? Where is the $%#$% remote!

    "I've always been mad, I know I've been mad, like the most of us have...very hard to explain why you're mad, even if you're not mad..."
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  • hellohello
    hellohello Posts: 428
    edited September 2005
    one thing u could try on noisy DC fans, if they are DC, is to use a diode or two on the positive side. It isnt variable unless u switch them in, but it does slow it down enough to be quiet
    Picking ones nose signifies a strong sense of self discovery :)

    System in the works: ;)
    PP 6V6 with 12ax7 pre ~ 20 watts
    15" Jensen MOD 8ohm ~ 97db SPL
    DiMarzio HS3 and/or Tone Zone S
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  • madmax
    madmax Posts: 12,434
    edited September 2005
    hoosier21 wrote:
    Like I said when post the amp for sale, I didn't research it enough. I was "thinking" the fan would be variable speed, or have a high low setting.

    Oh well, live a learn

    I was just pointing out that slowing the fan slightly takes care of the problem. I used the carver as an example because even at high wattage the slightly slower fan took care of the job and pretty much eliminated the noise.

    madmax
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D
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  • Airplay355
    Airplay355 Posts: 4,298
    edited September 2005
    more pics more pics :)
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  • goingganzo
    goingganzo Posts: 2,793
    edited September 2005
    that should almost be as insane as my 4 18 avalanch subs. with olny 500 wats now i can shake the entire house.
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  • mole'
    mole' Posts: 3,160
    edited August 2010
    very nice setup.
    mole'
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