Powering with non-HT amps..like Pro PA/DJ Amps?

13

Comments

  • zingo
    zingo Posts: 11,258
    edited April 2014
    Having played around with a few pro amps, many do have fan noise that is louder than preferred in your living room. My current Crown XLS1500 has not turned the fans on since I've owned it, and a few years ago I modded a Carver PM1201 with thermal switches to the fans, so it only kicked on under heavy loads. I wouldn't recommend that for the average user as you could easily burn-up your amp, and it's worked great for various duty ever since. I may actually try it for subwoofer duty in a closed cabinet and see how the fans react.
  • EndersShadow
    EndersShadow Posts: 17,687
    edited April 2014
    djwest78 wrote: »
    The majority of people who have actually used a pro amp in their home for the purpose the OP is inquiring about, claim the fan never comes on, or is not an issue. Most people who have never used one say ^^.

    That depends on what model. I know of a couple folks that this year tried one or two out and returned them or swapped out the fans. Have I ever used a pro amp in my setup - nope. Am I against it, not for my sub as I am planning on a DIY sub w/ a iNuke 3000. However I am pretty sure I will have to swap out the fan as my other buddies with that same amp have had to...

    due to ya know.... it coming on and being noisey....

    I bought the QSC GX-5 (500 WPC @ 8 ohm, 700 @ 4 ohm) and replaced the fan in it which was pretty easy to do. The stock fan was far too noisy. If you look around you might find a used one. There's also B stock for less money when they're available. I read the fans in the Crown amps aren't as noisy but I haven't used one myself. If I buy another amp in the future it'll be a pro amp.
    So, I would suggest not to rush at buying amps. I've been there. I bought a pro amp QSC-GX3, and it was a good amp, but the fan was too loud.

    If you ware willing to go for $400 dollars, I would suggest buying a brand new pro amp like the Crown XLS 1000, and doing the fan mod. I believe X bought of these and did the fan mod, and the amp is super quiet now.

    http://www.parts-express.com/crown-xls-1000-drivecore-series-power-amplifier--245-500

    but what do I know....
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • tonyb
    tonyb Posts: 33,067
    edited April 2014
    djwest78 wrote: »
    Also, many "hifi" products (preamps, receivers, disc players, processors) have fans in them as well.

    In the end, I believe that your question had more to do with how each would perform compared to one another in terms of SQ. Considering that many people hide their components in a closet or other room, further makes the potential fan noise a small factor when considering the hundreds of $ potentially saved ($/watt).

    Your idea of what a HI-FI product is and mine are 2 different worlds apart. Not aware of any good gear today with fans in them, if so, I'd question the design. Also many do not hide away their gear in a closet or other room, maybe some with high end dedicated HT rooms do, but then if you could afford that your not looking to save a few bucks on power amps.

    Speaking of saving a few bucks, your assertion is in line with my thoughts on this. People equate mega watts to sound quality, cheap watts is as good as more expensive watts...because you know, all watts are created equal and amps don't have different sound signatures. Yeah....that's sarcasm. Simply is not the case and soo much more goes into an amp than simply output power in watts.

    It's not about who's advice is better, it's about experiences...who has it and who doesn't. A lot of us came up through the ranks of pro amps and cheap speakers and have moved on. So some can speak from both sides of the fence. I've yet to hear your experiences from the other side of higher-fi audio to make such claims as you do.

    I know no one...in all my travels...in decades of being in this hobby, who have higher end amps and simply wish to return to pro amps for in home musical pleasure. Not a single solitary soul. Maybe you do, I dunno....but no owner of a Bat amp trades it in for a Crown. No owner that still has hearing left anyway.

    If cheap power is more important than SQ to you...then a pro amp is up your alley. If your more concerned with mega watts than SQ, get you a pro amp. If your wallet won't allow 3-4 hundred bucks for a used Parasound or B&K amp, then a beat up pro amp is for you. However, if the 3-4 bones for a decent quality used amp is too steep for your wallet, you should rethink your investment into better audio in the first place.
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited April 2014
    I promise that I will get with the program and use pro amps in my HT as soon as I can find the perfect pro speakers to go with them.......just sayin'.
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
  • tonyb
    tonyb Posts: 33,067
    edited April 2014
    I promise that I will get with the program and use pro amps in my HT as soon as I can find the perfect pro speakers to go with them.......just sayin'.

    ROTFLMAO !!

    You go Dennis...go getcha some !!
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited April 2014
    tonyb wrote: »
    ROTFLMAO !!

    You go Dennis...go getcha some !!

    If you only knew.....I have been known to use 8-10 18 inch bass bins with 6-8 15 inch mains for some outdoor shows, but it never crossed my mind to build my HT with any of the stuff.
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
  • Face
    Face Posts: 14,340
    edited April 2014
    If you only knew.....I have been known to use 8-10 18 inch bass bins with 6-8 15 inch mains for some outdoor shows, but it never crossed my mind to build my HT with any of the stuff.
    Those drivers generally have too high of an FS for HT...besides the fact that they usually require ginormous enclosures.

    Home subs have a more suitable FS, require a smaller enclosure, and pay the price of being less efficient.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • F1nut
    F1nut Posts: 51,689
    edited April 2014
    tonyb wrote: »
    If cheap power is more important than SQ to you...then a pro amp is up your alley. If your more concerned with mega watts than SQ, get you a pro amp. If your wallet won't allow 3-4 hundred bucks for a used Parasound or B&K amp, then a beat up pro amp is for you. However, if the 3-4 bones for a decent quality used amp is too steep for your wallet, you should rethink your investment into better audio in the first place.

    Summed up PERFECTLY!!!
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited April 2014
    Face wrote: »
    Those drivers generally have too high of an FS for HT...besides the fact that they usually require ginormous enclosures.

    Home subs have a more suitable FS, require a smaller enclosure, and pay the price of being less efficient.

    Yeah, I jest about the big pro mains in an HT enviro, but I am the guy with a 10 cubic foot subwoofer sittin' under my couch.
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
  • EndersShadow
    EndersShadow Posts: 17,687
    edited April 2014
    Yeah, I jest about the big pro mains in an HT enviro, but I am the guy with a 10 cubic foot subwoofer sittin' under my couch.

    Pics and info por favor....

    I'm looking at a 5 cubic foot diy sub here in the next couple months...
    "....not everything that can be counted counts, and not everything that counts can be counted." William Bruce Cameron, Informal Sociology: A Casual Introduction to Sociological Thinking (1963)
  • halo71
    halo71 Posts: 4,630
    edited April 2014
    tonyb wrote: »
    Your idea of what a HI-FI product is and mine are 2 different worlds apart. Not aware of any good gear today with fans in them, if so, I'd question the design. Also many do not hide away their gear in a closet or other room, maybe some with high end dedicated HT rooms do, but then if you could afford that your not looking to save a few bucks on power amps.

    Speaking of saving a few bucks, your assertion is in line with my thoughts on this. People equate mega watts to sound quality, cheap watts is as good as more expensive watts...because you know, all watts are created equal and amps don't have different sound signatures. Yeah....that's sarcasm. Simply is not the case and soo much more goes into an amp than simply output power in watts.

    It's not about who's advice is better, it's about experiences...who has it and who doesn't. A lot of us came up through the ranks of pro amps and cheap speakers and have moved on. So some can speak from both sides of the fence. I've yet to hear your experiences from the other side of higher-fi audio to make such claims as you do.

    I know no one...in all my travels...in decades of being in this hobby, who have higher end amps and simply wish to return to pro amps for in home musical pleasure. Not a single solitary soul. Maybe you do, I dunno....but no owner of a Bat amp trades it in for a Crown. No owner that still has hearing left anyway.

    If cheap power is more important than SQ to you...then a pro amp is up your alley. If your more concerned with mega watts than SQ, get you a pro amp. If your wallet won't allow 3-4 hundred bucks for a used Parasound or B&K amp, then a beat up pro amp is for you. However, if the 3-4 bones for a decent quality used amp is too steep for your wallet, you should rethink your investment into better audio in the first place.


    /end thread

    Sums up everything rather nicely I think!
    --Gary--
    Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.
  • Dennis Gardner
    Dennis Gardner Posts: 4,861
    edited April 2014
    Pics and info por favor....

    I'm looking at a 5 cubic foot diy sub here in the next couple months...

    I basically built a dual 5' EBS (Extended Bass Shelf) version with an Adire Shiva
    12 in each side with 19 inch 4 inch ports in each side tuned to 17hz. This cab replaces a full size hide-a-bed within the couch. You can really get a feel for the action movies in a way no other sub can give. You can see how huge this cabinet is as those are 12 inch drivers and they look small against that sheet of MDF. Love to have the ladies ask if we can turn it up and watch more explosion scenes.......
    HT Optoma HD25 LV on 80" DIY Screen, Anthem MRX 300 Receiver, Pioneer Elite BDP 51FD Polk CS350LS, Polk SDA1C, Polk FX300, Polk RT55, Dual EBS Adire Shiva 320watt tuned to 17hz, ICs-DIY Twisted Prs, Speaker-Raymond Cable

    2 Channel Thorens TD 318 Grado ZF1, SACD/CD Marantz 8260, Soundstream/Krell DAC1, Audio Mirror PP1, Odyssey Stratos, ADS L-1290, ICs-DIY Twisted , Speaker-Raymond Cable
  • Jayce1971
    Jayce1971 Posts: 38
    edited April 2014
    Maybe it simply comes down to how much volume the o.p. wants in his listening room. I don't necessarily agree with folks who wish to intrude upon my space with their 140db car stereo system's, but hey, it's THEIR ears. Not mine. I think that pro audio, (and I do mean PRO audio, {professional concert quality amps}) have a place in at least home theater. Perhaps not in a discriminating 2 channel system, but in 5.1 or 7.1, do not see why it couldn't work fine. I'm starting to believe that their are folks on this forum that believe they possess superhuman hearing... that perhaps, they could audibly differentiate between a mouse passing gas, and bat ****, and argue what types of interconnects, and speaker lines were used in the recording, as well as playback of forementioned sounds. Sorry but, I personally don't buy it. Unless you have Asthma, perhaps. And especially from anyone over the age of 30. If you are that old, and can actually hear above 15khz, consider yourself blessed. I've met few individuals that can perceive that high of frequency. O.P., use the highest quality that you can afford, which gives you the greatest return.
    Home Theater- 5.1/DTS bliss-- Source: Sony BDP-S790; Pre/Pro: Golden Theater GTX-1; Amplifiers: Golden Theater GTA-1; Speakers: Main: RTi6's, Center: RTi6's, Surround: RTi12's, Sub: KSW-12Video: RCA Scenium rear projection 52" @ 1080i.
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  • BlueFox
    BlueFox Posts: 15,251
    edited April 2014
    djwest78 wrote: »
    My musical background goes so far and beyond anything you could ever hope to grasp that I'll not waste my time creating a resume for you to browse. Owning gear means you have $. Does not mean that you have a brain. By the time you leave this Earth...if you are lucky, you will have an ounce of my musical know how and awareness.
    djwest78 wrote: »
    Great answer...Thanks so much for your expert input!!!
    djwest78 wrote: »
    Trust me, there are a group of appropriately 25 people (on this forum of thousands of people) who believe much much more than just that about themselves. Be careful expressing your opinion too freely. The moment you are perceived (by the .05% of people who constant this forum) as having a mind of your own, they will attack like white blood cells...and they NEVER take a day off.

    If you want to know exactly who the .05% of people are of whom I am speaking, just check back to this thread in a few hours. Likely the subject will be the fact that I have been in drub rehabilitation. Yes, that is how low it gets.

    So, you just made three posts attacking people within 17 minutes, and your premise is there are people on this forum who do nothing but attack people. Is that an example of irony?
    Lumin X1 file player, Westminster Labs interconnect cable
    Sony XA-5400ES SACD; Pass XP-22 pre; X600.5 amps
    Magico S5 MKII Mcast Rose speakers; SPOD spikes

    Shunyata Triton v3/Typhon QR on source, Denali 2000 (2) on amps
    Shunyata Sigma XLR analog ICs, Sigma speaker cables
    Shunyata Sigma HC (2), Sigma Analog, Sigma Digital, Z Anaconda (3) power cables

    Mapleshade Samson V.3 four shelf solid maple rack, Micropoint brass footers
    Three 20 amp circuits.
  • tonyb
    tonyb Posts: 33,067
    edited April 2014
    djwest78 wrote: »
    . Owning gear means you have $. Does not mean that you have a brain. .

    No...it means you have some experience of which to base your opinions on. Secondly....you don't need to have money or own every single piece of gear to form opinions. You only need to visit some hi-fi shops, have friends with better gear to listen to, and form some thoughts of your own.

    Comes down to forming an opinion, even if others don't agree, based on actual experiences rather than conjecture. Carries soo much more weight in audio forums.

    Opinions, which is all this is, is like a$$holes, everyone has one. Doesn't necessarily make one more valid than another especially on subjective matters such as audio. However, opinions based on some form of experience carry some weight verse the ones with nothing behind them. Kinda like taking advice on how to build your house from a carpenter who's never built one before, rather than one who has built 100 houses. Which opinion would you give more weight to ? Yeah....I know, the one who never built a house before because he's cheaper....right ?
    HT SYSTEM-
    Sony 850c 4k
    Pioneer elite vhx 21
    Sony 4k BRP
    SVS SB-2000
    Polk Sig. 20's
    Polk FX500 surrounds

    Cables-
    Acoustic zen Satori speaker cables
    Acoustic zen Matrix 2 IC's
    Wireworld eclipse 7 ic's
    Audio metallurgy ga-o digital cable

    Kitchen

    Sonos zp90
    Grant Fidelity tube dac
    B&k 1420
    lsi 9's
  • 4xoddic
    4xoddic Posts: 372
    edited April 2014
    tonyb wrote: »
    Kinda like taking advice on how to build your house from a carpenter who's never built one before, rather than one who has built 100 houses. Which opinion would you give more weight to ? Yeah....I know, the one who never built a house before because he's cheaper....right ?

    Are we talking tract homes here? I lived in one of those "developments," where a $35K 17YO home in 1992, now routinely sells for $135K.

    Conversely, I've been in the Buckminster Fuller Dymaxion House a # of times prior to it being moved to the Henry Ford Museum & Greenfield Village. The Frank Lloyd Wright houses seem to have some chronic issues as well.

    https://www.thehenryford.org/exhibits/dymaxion/index.html

    tony, how well do you know Tom, Norm, Richard, Roger & Kevin? They seem to be rebuilding homes w/out budgets . . . I have some issued on mine they could take on . . . . and I have no budget . . . . I spent it all on audio gear you & 1nut have frowned upon repeatedly.

    /sarchasm

    Little Joe
  • zingo
    zingo Posts: 11,258
    edited April 2014
    zingo wrote: »
    I decided to put my money where my mouth is (has been), and picked up a Crown XLS1500.

    Well I tried to add my actual experience with a "pro" amp to this discussion, but this is going no where, so I'm out.
  • F1nut
    F1nut Posts: 51,689
    edited April 2014
    djwest78 wrote: »
    Great answer...Thanks so much for your expert input!!!

    Thanks, I'm glad you realize that I am an expert. Perhaps one day, you might become one as well.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • halo71
    halo71 Posts: 4,630
    edited April 2014
    djwest78 wrote: »
    My musical background goes so far and beyond anything you could ever hope to grasp that I'll not waste my time creating a resume for you to browse. Owning gear means you have $. Does not mean that you have a brain. By the time you leave this Earth...if you are lucky, you will have an ounce of my musical know how and awareness.


    That is almost quotable material there! lmao! Soooo.....being a DJ makes one an expert in all things audio ehh?? I have learned something tonight. Thanks troll!
    --Gary--
    Onkyo Integra M504, Bottlehead Foreplay III, Denon SACD, Thiel CS2.3, NHT VT-2, VT-3 and Evolution T6, Infinity RSIIIa, SDA1C and a few dozen other speakers around the house I change in and out.
  • Face
    Face Posts: 14,340
    edited April 2014
    zingo wrote: »
    Well I tried to add my actual experience with a "pro" amp to this discussion, but this is going no where, so I'm out.
    I agree, there's too much immaturity from both sides on the matter.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
  • villian
    villian Posts: 412
    edited April 2014
    tonyb wrote: »
    Also many do not hide away their gear in a closet or other room, maybe some with high end dedicated HT rooms do, but then if you could afford that your not looking to save a few bucks on power amps.

    That was an ignorant statement. I have a dedicated HT room and am looking at whichever amps give me the best bang for the buck. Some people, like myself, HATE throwing good money are poor products. We're willing to bend the norm and turn heads to avoid being ripped off! I'm leaning towards running multiple Crown amps at this point over any HT purpose built amps. I see no down side to it. I could have fans putting out 80db and it wouldn't bother me one bit!
    Too many good quotes to list..waiting for some fresh ammo. :)
  • villian
    villian Posts: 412
    edited April 2014
    tonyb wrote: »
    ....but no owner of a Bat amp trades it in for a Crown. No owner that still has hearing left anyway.

    Nobody with a Ferrari is trading it in for a Dodge Viper..even though the Viper is often times faster, and costs less. There's a great lesson to be learned there. Heck, if I had a $10k Pro HT Amp that performed the exact same as a $500 Pro DJ amp at HT sound reproduction, I wouldn't trade it either! I'd have already invested the $10k and be up ****s creek! Instead, I'd just try and convince everyone else of how "Great" and "Much better" my HT amp is vs that cheap..cheap..DJ/Live sound amp!
    Too many good quotes to list..waiting for some fresh ammo. :)
  • villian
    villian Posts: 412
    edited April 2014
    I basically built a dual 5' EBS (Extended Bass Shelf) version with an Adire Shiva
    12 in each side with 19 inch 4 inch ports in each side tuned to 17hz. This cab replaces a full size hide-a-bed within the couch. You can really get a feel for the action movies in a way no other sub can give. You can see how huge this cabinet is as those are 12 inch drivers and they look small against that sheet of MDF. Love to have the ladies ask if we can turn it up and watch more explosion scenes.......

    So...

    You used MDF instead of high ply count Baltic Birch plywood. Obvious SQL mistake number one.

    Mistake number two. You used ROUND ports?

    Come on, you guys all talk about Sound quality..then make rookie mistakes like this? (Round ports induce huge amounts of noise via horrific airflow characteristics into and out of the port, especially along the edge and throughout the center) Correct me if I'm wrong on the ports, but I hope I'm not! :) My point is, we all know a few great things that can make an home theater just totally awesome! (Like you Dennis..awesome sub box idea..on point, no doubt, and honestly quite brilliant!) BUT we all know just a smidget of the total sum that equates to reference level sound quality, and therefore should be open to the ideas of others who may specialize in a different smidget than ourselves. Quality Live Sound/DJ amps is one of those things that I know quite a bit about, as well as speaker box construction :) Please feel free to school me on the rest, as I will gladly take in that knowledge and improve my own with it!

    I'm not going to claim to know everything, because I don't. But as a whole, I'm pretty sure we do. So let's put that knowledge together and work from there. Fair enough? It's 2014, we just had a member buy himself a modern, reliable, high quality Live Sound/DJ amp (Crown XLS 1500) to compare to other HT dedicated amps costing hundreds more. His verdict? So far so good, no complaints. Boom. Let's all learn and keep testing out theories like this to avoid wasting money on products we should have never bought in the first place!
    Too many good quotes to list..waiting for some fresh ammo. :)
  • villian
    villian Posts: 412
    edited April 2014
    zingo wrote: »
    I decided to put my money where my mouth is (has been), and picked up a Crown XLS1500. On my 4ohm speakers, this amp puts out a conservative 500wpc, runs very cool, and the fan has not turned on once; the amp is enclosed in a A/V cabinet and left on 24/7. Driving it with a B&K PT-3ii, there is plenty to gain, no buzz/hum/hiss, and the sound is not bright or harsh. Maybe it's the combination with the warm B&K, but the amp is clear, clean, and dynamic. It only has a few hours on it, but I'm already impressed by how much clean power you can get for the money.


    Best post yet.
    Too many good quotes to list..waiting for some fresh ammo. :)
  • F1nut
    F1nut Posts: 51,689
    edited April 2014
    Let's all learn and keep testing out theories like this to avoid wasting money on products we should have never bought in the first place!

    So, what other HT dedicated amps costing hundreds or thousands more do you have experience with and feel you wasted your money on? I mean, you've taken it upon yourself to speak for everyone, so I want to know if you're qualified to do so.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


    President of Club Polk

  • Face
    Face Posts: 14,340
    edited April 2014
    villian wrote: »
    So...

    You used MDF instead of high ply count Baltic Birch plywood. Obvious SQL mistake number one.

    Mistake number two. You used ROUND ports?
    Now you're really reaching. For a sub, either material is fine when braced properly. As for round ports, there's nothing wrong with them when using the correct diameter and length. Too small of a diameter or short of a length can result in noise and an improper tune, just like a poorly designed slot.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche