V*****n
发帖数: 893 | 1 thanks for the good words. Building my first speakers really was a game
changer. Now I'm gonna sell off our IQ3 and AR94 since I can easily build
speakers a couple of notches better. I am currently investigating ways to
improve the strength and precession of the enclosure construction. that
might delay things a bit. |
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V*****n
发帖数: 893 | 2 a quick update:
building even a small pair of enclosures turned out to be harder than I
thought. Towers will require much greater precision due to their size. I got
some great new tools - a table saw and a drill press - to achieve
satisfying results. Right now I am focusing on building jigs. Hopefully the
super exciting tower build will start next week. |
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D**********s
发帖数: 3139 | 3 喇叭的话高频特别脆或者噪音。。。但是耳机我还真没太注意过，一般听的音量都不会
啦。不过如果耳机的输入额定功率比较小的话，也会拍打enclosure。不知道他听到的
是什么，得看波。没有负反馈虽然音色好，但是也减小了纯净功率。总之没必要用那么
大音量啦。。。 |
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l**4
发帖数: 2989 | 4 local有人卖，想搞来当家庭影院的主音箱，目前的卫星箱还是觉得不够劲儿
对mission不太了解，不知道mission的7开头的音箱是什么定位的
一米四高，33公斤重，大概参数如下：
Power Handling: 25 - 250 wpc
Impedence: 8 ohms
Enclosure: 3-way reflex loaded - 2 x 8" bass drivers, 1 x 6" midrange, 1 x 1
.5" tweeter. Can be bi-wired / bi-amped
Frequency Response: 30Hz - 20kHz (-3dB @ 25Hz)
Dimensions (HxWxD): 140 x 26 x 42cm
Weight (ea.): 33kg |
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Y*******g
发帖数: 150 | 5 Frequency response: 50Hz-23kHz +/-3dB
power handling: 75W RMS / 300W Peak
sensitivity: 92dB @ 2.83V / 1m
nominal impedance: 8 ohms compatible
high frequency drivers: 1" (2.54cm) Titanium diaphragm compression driver
mated to 90x60 square Tractrix® Horn
high freq crossover: 2000Hz
low frequency drivers: 5.25" (13.3cm) Cerametallic™ cone woofer
enclosure type: Bass-reflex via rear-firing port
height: 11.4" (29cm)
width: 6.5" (16.5cm)
depth: 10.75" (27.3cm)
mounting: Keyhole bracket and ... 阅读全帖 |
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s**a
发帖数: 1995 | 6 本版大拿，不少小白，像我一样入手了这对音箱，但对给这对音箱匹配一个合适的功放
是给个难题。我看了看手头的资料，还是不太明白，哪位能以这对音箱为例讲解一下匹
配音箱和功放的原则，比如，六欧姆不是典型的阻抗值，怎么计算合适的功率，除了功
率以外还有什么指标要匹配如何匹配等等，实在是功德无量的好事。本人愿意全部包子
赠送。
先锋BS-41指标如下
Enclosure ... Bass-reflex Bookshelf Type
Configuration ... 2-way
Frequency Range ... 55 Hz-20 kHz
Nominal Impedance ... 6 Ohms
Sensitivity (2.83 V) ... 85 dB
Maximum Input Power ... 130 W
Crossover Frequency ... 2.5 kHz
amazon有个ONKYO TX-8050 2.0的receiver，我比较喜欢它的数字输入比较多，光纤/
usb/coax都有，而且列出来的6 Ω loads 100W 功率貌似也够了。他的电气指标如下。
哪位如... 阅读全帖 |
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g*******a
发帖数: 46 | 8 这对音箱现在有特价，正在打算组建家庭K歌系统，音箱不在行，所以请教了。
http://www.frys.com/product/7580966
BUILT FROM: 2010
CROSSOVER FREQUENCY: 2250Hz
DEPTH: 8" (20.3cm)
ENCLOSURE TYPE: Bass-reflex via rear-firing port
FINISH: Black Ash vinyl
FREQUENCY RESPONSE: 62Hz-23KHz ± 3dB
HEIGHT: 12.5" (31.8cm)
HIGH FREQUENCY DRIVER: .75" (1.9cm) Aluminum diaphragm compression driver
mated to 90° x 60° square Tractrix® Horn
INPUTS: Single binding posts
LOW FREQUENCY DRIVER: 5.25" (13.3cm), magnetically shielded IMG woofer
NOMINAL IMP... 阅读全帖 |
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D**********s
发帖数: 3139 | 13 Recommended Enclosure Volume: 225 - 450 L (8 - 16 ft3)
Effective Piston Diameter: 406 mm (16 in)
Maximum Excursion Before Damage: 25
这箱子够大 |
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p*******m
发帖数: 20761 | 14 Mirage M-290
Loudspeaker System
add a review add a review
mirage 290is loudspeaker system
Mirage M-290
Specifications
Type: 2 way, 2 driver loudspeaker system
Frequency Response: 43Hz to 22kHz
Power Handling: 125W
Recommended Amplifier: 15 to 125W
Crossover Frequency: 1800Hz
Impedance: 8Ω
Sensitivity: 87dB
Bass: 1 x 165mm polypropylene cone
Tweeter: 1 x 25.4mm titanium dome
Enclosure: front ported
Finish: black ash vinyl, rosewood
Dimensions: 406 x 216 x 267mm
Weight: 7.1kg
比5块钱买的玩具toy效果如何... 阅读全帖 |
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b********r
发帖数: 118 | 15 java experience也5years+ 被hm问了这个问题不知道
人家让我google一下 下次meet再聊 回来google 居然没找到
他说是类似inner class的东西 版上大牛提示一下? 可能我拼写错了
多谢 |
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y*********e
发帖数: 518 | 18 感觉对方是在问 Closure。
这个是 Java 对 Lambda 表达式的实现。Java 7 已经确定在语法上支持这个。
Java 6或者以前的版本只能靠 interface + anonymous class 来实现。
若是做过 functional programming（比如haskell），应该对 Lamdba 表达
式比较熟悉。
从C++的角度来看，就是 function pointer，但是它是 Strongly Typed。
举例代码来说明。假设要对二叉树遍历，代码很好写，比如：
void inOrder(Tree tree) {
if (tree != null) {
inOrder(tree.getLeft());
System.out.println(tree.getValue());
inOrder(tree.getRight());
}
}
但是如上的函数只是把Node的值打印到终端。若是要变得generic一点，要遍历的
过程中，能引入一个函数，对每一个Node执行这个函数，该多好。这样就引入了一
个概念：能... 阅读全帖 |
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c*****h
发帖数: 166 | 22 这个apache commons包里面有 functor里面的一种 又看了下 很像visitor pattern
呢 |
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y*********e
发帖数: 518 | 24 Apache Common里面那个提供的是一系列的interface还有static的函数来做辅助。
真正的Closure还要提供语法上的支持。要提供一种简单的方法，能够把一个代码片段
当作参数带入函数。
比如，你给的链接里面的 Ruby 的示例代码：
def highPaid(emps)
threshold = 150
return emps.select { |e| e.salary > threshold }
end
这里的代码片段 |e| e.salary > threshold 其实会被编译成一个匿名函数。输入 e，返回
e.salary > threshold。所以输入类型是Employee，输出是Boolean。
但是Java 6在语法上就不支持，非要创建一个interface，然后new一个新的对象，把对
象当作参数带入select函数。麻烦之级。
除此之外，还要求编译器能自动鉴别数据类型 (Type Inference)。比如，我写一个匿
名函数，x => x + 1，这个 x 可以是 int，也可以是 long，还可以是 double。对于
支持ge... 阅读全帖 |
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m***j
发帖数: 1215 | 27 Recruiter contacted me:
Do you happen to know any strong/technical ME designers with 3-7 yrs of
experience?
Pls forward this job spec to your ME networks. Many thanks!
Product Design Engineer - Apple Watch
As a member of a cross-functional design team at Apple, you will help to
create the next generation of the world's finest mobile devices. You will
conceive, design, and bring into production products that will re-define the
mobile experience. You will work closely with many different cross... 阅读全帖 |
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z****m
发帖数: 5 | 28 Mechanical Design Engineer
– Zyno Medical LLC (Natick, MA)
Zyno Medical LLC is looking for a Chinese speaking Mechanical Design
Engineer. The candidate has to be very proficient in 3D CAD (SolidWorks).
RESPONSIBILITIES:
- Create 3D CAD models for Medical device enclosure and subsystem design;
- Generate drawings and specifications with consideration of
manufacturability, material availability, and cost
- Build and optimize prototypes
- Finite Element modeling for structural integrity and reliabi |
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m**********t
发帖数: 385 | 29 PURPOSE
This position is to provide senior level mechanical design capabilities for
the development of medical devices.As a senior engineer，individual will
provide mentoring to junior level engineers and experienced mechanical
engineering expertise to deliver innovative,easy-to-use,cost effective, safe
and manufacturable medical devices，intended to enable Philips Healthcare
to enter and win in the designated market segments worldwide.
DIMENSIONS
• Mechanical development schedules, BOM cos... 阅读全帖 |
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m****s
发帖数: 18160 | 30 【 以下文字转载自 ME 讨论区 】
发信人: jsyyy (结束每天看Indeed的日子), 信区: ME
标 题: 工作机会(2)
发信站: BBS 未名空间站 (Wed Oct 31 16:29:32 2012, 美东)
Dear xxx
I have a 6 month contract in the North Atlanta area looking for a Mechanical
Engineer. This job has the potential to go perm and/or extend. Would you or
anyone in your network be interested in a role like this?
Here are the basic skills:
· Bachelor's degree in mechanical engineering.
· 3 years experience in electro-mechanical design.
· Experience with d... 阅读全帖 |
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l******n
发帖数: 115 | 31 My company has an openging for a Sr. Mechanical Engineer. The position is
located in Buffalo Grove, IL. No relocation provided. If you are interested
in it, please PM me. Requirements and job descriptions are as follows:
1. 5+ years of mechanical design/engineering for electronic consumer devices
and related products, primarily cellular/mobile phones, headsets and
accessories
2. Successfully provide and identify design solutions including tolerance
analysis, design for assembly and manufacturabi... 阅读全帖 |
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l******n
发帖数: 115 | 32 My company has an openging for a Sr. Mechanical Engineer. The position is
located in Buffalo Grove, IL. No relocation provided. If you are interested
in it, please PM me. Requirements and job descriptions are as follows:
1. 5+ years of mechanical design/engineering for electronic consumer devices
and related products, primarily cellular/mobile phones, headsets and
accessories
2. Successfully provide and identify design solutions including tolerance
analysis, design for assembly and manufacturabi... 阅读全帖 |
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M******9
发帖数: 218 | 33 What to know from some folks did this before.
What's a normal labor cost for installing following doors:
tub glass enclosure:
closet vinyl/glass sliding door:
fire door from garage to living room:
garage side door:
I am really not a person good at bargain. And sometimes when I do it,
eventually I get pay more, ;-) |
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M******9
发帖数: 218 | 34 thanks, what I need is install door and frame,
I got a quota, install a interior door and adjust one side stub: $180
Install fire door: $200
painting for each door: $50
tub glass enclosure: $200
closet: $120, need cut a little bit floor.
you are
some
or |
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w*****f
发帖数: 335 | 35 如果要告，也得告上上任的屋主，因为上任屋主并不知道这个没有permit(或者说没有
证据显示他知道这个事情)。其实大家都知道，但如果上报到city来查，就不能装作不
知道了。
我昨天又仔细想了一下为什么第一个屋主不把这个上报给city. 这个enclosure的活儿
是做的很不错的，他不敢上报的原因可能是不想安装灭火喷头，房子其他地方都有若干
个喷头，但这片就没有，而这片面积里还加了个壁炉，所以我觉得安装灭火喷头可能会
很贵，那个屋主就隐瞒不报了。 |
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s****i
发帖数: 519 | 36 Hehe，你也这么说。。:-) 那还有别的upgrade推荐么？
其实单子里还有加ceiling fan prewire的，$125 each，
Tile backsplash $800，
shower enclosure $750，
side garage door $1000，
Laundry room upper cabinet $600，sink和lower cabinet$800
这些听着我也都觉得很nice，不过我也很想省钱，如果能自己弄当然也挺好。 |
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e********t
发帖数: 9607 | 37 shower enclosure + door。
3/8"的要1800，1/4"的要1100。
要按玻璃面积来算，加起来总共也就是32 sqft。
按单价算，比granite还贵（3cm的granite包安装也就$35/sqft） |
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e********t
发帖数: 9607 | 38 看多大的窗户了，双层玻璃，还有窗框，开关机构什么的。
而shower enclosure就是几块平板玻璃而已，加几个最多几十块钱的U槽，铰链。
可能主要是因为tempered glass没法再加工，必须加工好了再回炉。这样基本上每个不
同客户都要订做，回炉一次，导致成本高。 |
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e********t
发帖数: 9607 | 39 stucco?
浴缸看着像塑料的，应该不会破。shower enclosure和墙上的瓷砖可能会受影响。
为啥要折腾呢？其实挂个窗帘就好了。
验？ |
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a*********e
发帖数: 697 | 40 浴缸好像是瓷的，如果是那么是不是容易受影响啊？shower enclosure被震碎的可能性
有多大呢？
是我领导坚持要换，他说浴室水汽大，挂窗帘什么的会长霉；（ |
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s********e
发帖数: 893 | 41 房子靠湖，湖里不远处有个小岛，岛上有茂密参天大树。每天傍晚倦鸟归林顶着夕阳在
湖上盘旋甚是壮观。可惜好景不长，最近鸟老是来啄游泳池外的Screen Enclosure。上
面7，8个panel都被啄个大洞。不知是什么鸟，像老鹰，又像乌鸦。个头也不小，双翅
展开3尺是有的。大家说有什么办法驱鸟吧。稻草人，假猫头鹰？ |
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j***k
发帖数: 2719 | 42 I like the look with tiles. The difference is only a few hundred, at most $
1K. It is not usually a big deal financially.
Tubs with prefabricated wall enclosures are considered to be low-ends, in
the eyes of most Americans. Although I think it is very nice, and easy to
take care of. Most Americans prefer tubs surrounded by tiles. It is
something to remember when selling the house. |
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x****m
发帖数: 230 | 43 1. THE HEATING SYSTEM AIR FILTER TO BE REPLACED.
2. THE ANGLE STOP SUPPLY VALVE HANDLE IN DOWNSTAIRS BATHROOM TO BE REPLACED.
3. THE LEAKING SHOWER HEAD IN MASTER BATHROOM TO BE REPAIRED.
4. THE DRAIN SYSTEM UNDER THE KITCHEN SINK TO BE CLEANED.
5. THE UPSTAIRS HALL BATHROOM FLOOR AT THE BASE OF THE TUB TO BE SEALED.
2A. FINDING: Minor stress cracks were noted in the exterior stucco as
indicated on the diagram.
RECOMMENDATION:Seal all cracks that are wider than 1/16 of an inch with a
exterior gr... 阅读全帖 |
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r******r
发帖数: 700 | 44 看好个 1986 年的 townhouse, disclourse 提到这些问题了。fix 大约需要多少钱？谢谢
Disclourse Report:
0. Landry Exhaust Fan Clogged or burnt out.
1. MBR shower window doesn't slide easily; shower door roller broken
2. Wiring recessed light, small bedroom overhead lighting and L/R track
lighting done without permit
3. Kitchen sink drains slowly.
Property Inspection Disclourse:
0. The window at the master bathroom does not operate smoothly due to worn
or missing hardware. It is suggested that the window condition be correc... 阅读全帖 |
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a******e
发帖数: 934 | 45 Post for a friend.
Can anyone suggests good glass shower door company? I would like to get
frameless shower doors/Shower Enclosures.
Thanks! |
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l**p
发帖数: 569 | 46 多谢了。
刚才又查了一下， 麻省是20年，而且必须是“without owner's consent”。看起来
签个agreement，或者每年给邻居写个notice提醒他fence可能是在我的land上可以
防止adverse possession：
Adverse possession is a way of acquiring title to real property by
physically occupying it for a long period of time. As strange as it may seem
to the non-lawyer, you may acquire property without the consent of the
actual title holder if you possess it long enough and meet the legal
requirements discussed below. Also discussed below are the theories that
underlie this do... 阅读全帖 |
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b*******c
发帖数: 20683 | 47 我家买过，不过是用在院子里screen enclosure上的，不知道和纱窗上的是不是一样。
记得是买的一大卷，100刀上下，自己回来裁的，不知道有没有零卖的。 |
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H******7
发帖数: 34403 | 48 pool in wylie, tx
Amount: $15,000.00
Posted by: bl in wylie, TX. Posted: November 30th, 2010 12:11PM
Material: vinyl-lined Type of Pool: in ground
Can the person who posted this give me the name of the company?
Was this post helpful to you? yes no Report prohibited or spam
In ground custom pool
Amount: $56,000.00
Posted by: a user in Riverview, FL. Posted: March 28th, 2011 09:03AM
Material: Concret and shale Type of Pool: in ground
Sq Ft of Pool: 850
Custom pool with zero en... 阅读全帖 |
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a*****0
发帖数: 3319 | 50 看了个房子，房子inspection report seller agent已有。提到fungus 问题。我以前
买这房子时都没看到这问题，请问这重要吗？
1. fungus damage noted to the side garage door.
Recommendation: remove old door and install a new pre-hung door. Existing
hardware will be reinstalled. Gutters and roofing material will be removed
and set to side. It's owner's responsibility to hire a roofer to reinstall
the gutters and roofing material.
estimate price for repair: $711
2. Fungus damage was noted to the plywood under the shower。
Recommendation: remove a... 阅读全帖 |
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