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  1. Ethan Winer

    Speakers too close to side wall

    Speakers are always too close to walls, unless you set up in a gymnasium. :D So the standard advice applies here too. All rooms need: * Broadband (not tuned) bass traps straddling as many corners as you can manage, including the wall-ceiling corners. More bass traps on the rear wall behind...
  2. Ethan Winer

    Want to built Crossover by myself

    Yes, you can make a 3-way crossover but you'll need two circuits for each channel insead of only one. The first splits two ways for the woofer and mids/highs, and the mids/highs are then further split to separate mids and highs at a higher frequency. --Ethan
  3. Ethan Winer

    Want to built Crossover by myself

    Your English is fine and you're not bothering me at all! I suggest you do a little Google research to look for beginner advice with electronic circuits. There are a lot of web sites that have exactly the information you need if you spend a little time searching. --Ethan
  4. Ethan Winer

    Want to built Crossover by myself

    I agree with Robert that given the level of your questions you're probably better off building a kit. I'm not trying to discourage you! But the audio construction articles on my web site might be just a bit too advanced for you at this point. --Ethan
  5. Ethan Winer

    Want to built Crossover by myself

    See this article: www.ethanwiner.com/spectrum.html Look for the heading "ELECTRONIC CROSSOVER" about halfway down the page. --Ethan
  6. Ethan Winer

    Acoustic Treatment

    > My audio advisor is recommending acoustic treatment < Excellent. No point having nice speakers and other gear if the room makes a muddy mess of the sound by giving a skewed response, echoes, and bass ringing. > He states that $10k is barely enough for a B installation. < That's...
  7. Ethan Winer

    Room layout

    Johnny, Tim is on the right track, but I'd put the speakers at the bottom of the drawing facing up. Having the speakers fire the longer way into the room lets you sit farther away from the wall behind you, which is where the inevitable peaks and deep nulls are worst. I hope nobody minds...
  8. Ethan Winer

    Accoustical Treatments

    Nat, > Will 2" thick panels provide any help in the mid/upper frequencies? < Yes, absolutely. --Ethan
  9. Ethan Winer

    Accoustical Treatments

    Andy, That's the right stuff, and you can peel off the plastic facing and stack them together. The only downside is it's pretty expensive if you plan to make many panels. And those ceiling tiles are so thin you'll need 4-8 of them to make each final panel. --Ethan
  10. Ethan Winer

    Accoustical Treatments

    Adam, Have a look at the Acoustics FAQ, second in the list on my Articles page: www.ethanwiner.com/articles.html --Ethan
  11. Ethan Winer

    I'm going to build a basement HT. Need advice.

    Dan, I'm not much of a construction guy, so I can't help with your drainage problem. Maybe you could leave the floor as is and paint it, or use vinyl tile? Sorry that I missed the 7' height - I see it now in your original post. With a height of 7 feet and width of 12'10" there's no ideal...
  12. Ethan Winer

    I'm going to build a basement HT. Need advice.

    Dan, > is 25' too long? < There are various "ideal" dimensions for a room when audio quality is important. For an 8 foot ceiling and a 12'10" width, a length of 18'6" is about right. But what's your ceiling height? --Ethan
  13. Ethan Winer

    Please analyse my room project please.

    Joh, Yes, building speakers flush into the walls is very good if it's done right. Most professional recording studios have this arrangement. Below is a photo of one such studio. --Ethan --Ethan
  14. Ethan Winer

    Need advise on DIY Deep Bass trap

    Wayne, > Why in the world would you want absorption for a frequency where you have a null? < Eric nailed it. Nulls are caused by reflections, so adding absorption reduces the severity of the nulls. Eric: Building a bass trap tuned to 40 Hz is not trivial because it has to be very large...
  15. Ethan Winer

    Need Thoughts on Large Square Room

    Rod, I agree with Rutgar that optimizing your room dimensions is very important if you're hoping for a well balanced low end. Note that there's more than one "good" ratio of height to width to length. This is explained in detail in the Acoustics FAQ, second in the list on my Articles page...
  16. Ethan Winer

    Speakers "popping" - seems to be power related...

    Ryan, > when something is turned on or off on the circuit the speakers will pop ... I HAVE all of the components on a surge protector < A surge protector is of no use here. (Most of them are of no use anyway in my opinion.) What you need is an RFI filter. If you're the DIY type you can...
  17. Ethan Winer

    Celing Material

    Scott, > Would thinner sheetrock reflect less sound? < No, even the thinnest sheet rock you can get will be reflective at the frequency ranges that harm imaging. You really do need some sort of absorption if you hope to get great sound. --Ethan
  18. Ethan Winer

    Room Size

    Bob, Yes, a square room is not ideal. The good news is you can greatly reduce the effects of a poor room shape by using acoustic treatment, especially bass traps. --Ethan
  19. Ethan Winer

    Front wall design?

    Roy, > Not sure of the height right now < When you know post it here and I'll run the numbers in my mode calculator program. Or you can download the program (PC, Windows) from my company's web site and experiment with various dimensions yourself. > what would maximise bass response? <...
  20. Ethan Winer

    Front wall design?

    Roy, > The room is 12' by 23' long, but I'm thinking of shortening it to 18' < If you have the luxury of determining the room dimensions you should consider optimizing the room for the best low frequency response. Some dimensions and ratios are much better than others. How high is your...
  21. Ethan Winer

    Parametric vs. Graphic EQ

    Eryn, > What is the difference between these two types of equalization? < If you want to learn more about equalizers read "The art of equalization," 6th in the list on my Articles page: www.ethanwiner.com/articles.html --Ethan
  22. Ethan Winer

    Acoustiblok alternatives

    Bobby, Simply adding a second layer of sheetrock costs much less and improves isolation much more than any thin vinyl. --Ethan
  23. Ethan Winer

    Room Treatments

    Blaine, > My room is fairly small, but there is no back wall. < That solves half the battle right there. With no back wall there are no reflections to skew the low frequency response. Not that an open back gives perfect response, because the side walls and floor and ceiling still...
  24. Ethan Winer

    Room Treatments

    Blaine, > I can at least talk her into doing two ... those should help shouldn't they? < They'll help improve imaging, but do nothing for bass problems which are at least as important. Do what I did: sneak a little into the room at a time. :D --Ethan
  25. Ethan Winer

    Room Treatments

    Blaine, > What are the accoustic properties of fiberglass insulation. < For the complete story, see the Acoustics FAQ, second in the list on my Articles page: www.ethanwiner.com/articles.html I have to warn you - if your wife won't let you add anything to fix the acoustics, there's...
  26. Ethan Winer

    Finding reflection points in room

    Thi, > Should I place the absorption material around the actual reflection point of the center speaker or should I place it at ear level above the point < The correct place is wherever you see the speakers in the mirror. I'm not suggesting you mark the walls and ceiling with a crayon, but...
  27. Ethan Winer

    Finding reflection points in room

    Thi, > If I have the mirror against the left side of the room, do I consider the left speaker's appearance ... < Here's how that works: You sit in the listening position while someone else places a mirror flat along the side walls. You look at the mirror from your seat, and any place you...
  28. Ethan Winer

    Thoughts on preventing drop cieling vibration?

    Peter, Are the tiles physically vibrating? The best solution for that is to lay fluffy fiberglass batts on the top of the tiles. If the fiberglass is thick enough that will also improve the low frequency response in the room. Six inches thick is good, and one foot thick is even better if you...
  29. Ethan Winer

    Aphex Systems

    Burt, > Aphex processors which run along with the receiver and boosts sound to ultra quality standards. < Aphex and BBE processors are mostly a joke among audio professionals. If you think about it, there's no way for any processor to improve audio quality after the fact. (Aside from noise...
  30. Ethan Winer

    New Room with Bad Bass - Please Help!!!

    Wayne, > I “get it” now ... Here we have what appears to be wholesale, across-the-board cancellation < Yes, but it's just a variation on the same theme, where reflections from the room boundaries cancel some of the sound. > This seems to be a fairly common problem with rectangular rooms...
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