Tag: 2018上海哪里有油压


JBLs mighty little tower speaker is a keeper

first_img 2 Comments Share your voice JBL’s Stage A 170 tower speakers JBL In late 2018 I spent some quality time with a couple of high-end JBL horn speakers, the 4429 and S3900. Nice, but the 4429 sells for $5,000 a pair and the S3900 for $10,000 a pair! High-end to be sure, so I also wanted to spend some ears-on time with JBL’s considerably more affordable speakers and see how much of the magic trickled down. A few emails were exchanged and the company sent the Stage A170 tower speakers to my home. They sell for just $200 each on Amazon, how would they fare?The A170s cost as much as a decent set of stand mount speakers, but they take up the same amount of space and you don’t need to buy stands.It’s a “two and a half way” design with a pair of 5.25-inch polycellulose woofers, and a 1-inch aluminum tweeter set into a waveguide that focuses the A170’s high-frequency dispersion. The two and a half part means the two woofers are assigned slightly different tasks. The lower woofer works only as a woofer; the upper woofer goes just as low, but also reaches higher to blend with the tweeter. The A170’s impedance is rated at 6 ohms.The black vinyl wrap finish isn’t fancy, but the overall build quality is good. Black cloth grilles are included, and the rear baffle hosts two bass ports and sturdy bi-wire speaker cable connectors. The A170 is 37 inches tall, but just 7.5 inches wide and therefore might be accidentally tipped over, so JBL includes outrigger feet that can be fitted with either carpet piercing spikes or rubber feet to enhance stability.The Stage lineup features two more larger towers, the A180 ($280 each) and A190 ($360 each), and two bookshelves, the A120 ($160 a pair) and A130 ($250 a pair). If you’re interested in a home theater multichannel setup add one of the Stage center channel speakers, the A135C ($250 each) or A125C ($200 each), and a powered sub, either the A120P ($450) or A100P ($350). Coming up in a few weeks I’ll review the A130 bookshelf speaker.jbl-stage-series-productsThe complete JBL Stage lineup JBL The sound of JBLI auditioned the A170 with a NAD C 316BEE integrated amp and an Oppo UDP-203 Blu-ray player for most of my listening tests. Late in the review I moved up to a Schiit Aegir power amp running directly off the ‘203’s analog outputs, and my respect for the skinny A170s sound only grew stronger. The A170 made very ample bass, and it wasn’t just the quantity of the bass, but also the quality of it. The sound took me back to the heady days of the 1970s when JBL was nearly every rock music fan’s dream speaker. Those roots run deep.The heritage shone through: This speaker made a joyful sound; even when played pretty loud it didn’t overtly strain or turn harsh. Bass definition was good, but it’s the midbass texture/definition that grabbed and held my attention. When the need arose the A170 could deliver the warm growl of a baritone sax or the woody resonance of an acoustic bass. The midrange was nicely handled as well, there was a good sense of body and warmth on vocals. The tweeter could sound a tiny bit aggressive when the speakers were angled in, firing directly at the listening position. The fix was easy enough: Just reduce the toe-in; the treble smoothed out, and the sound was sweeter that way. The A170 wasn’t as vivid as the Klipsch RP 600M bookshelf speaker ($550 a pair), and that one’s dynamics kicked harder overall. Then again, the ‘600M didn’t have close to the bass oomph of the A170. Both were terrific, but most A170 owners wouldn’t need to add a subwoofer for music, the ‘600M would benefit with some low bass assistance. Tom Petty and the Heartbreaker’s 2010 album Mojo had plenty of get up and go. I like that the sound of this album is straight ahead, without flashy studio tricks, just a well honed band laying down terrific tracks. Especially Steve Ferrone’s drumming, he’s driving the tunes, and the A170s really delivered the goods. German prog-rock pioneers Can’s Future Days album positively lit up the A170s! The fierce polyrhythms were played with gusto, and the sheer beauty of the melodic lines of this 1972 album could still floor me. Future Days’ stereo mix is expansive, and the A170s did a good job presenting the soundstage depth that makes this music so special.The JBL Stage A170 is a slam-dunk winner, and positive proof that “large” speakers have it all over similarly priced bookshelf, aka stand mount, speakers! If you’re just now starting to get serious about the sound of your music, the A170 deserves your full attention. Tags The Audiophiliac Speakers Home Entertainmentlast_img read more


8 km tailback on DhakaCtg highway

first_img.An eight kilometre tailback was created on the Dhaka-Chittagong highway on Saturday morning, following slow traffic movement from Kanra of Daudkandi upazila, Comilla up till Meghna-Gomti toll plaza.Daudkandi highway police officer in-charge Abul Kalam Azad said the slow ticketing process on the Meghna-Gomti Bridge’s web-based excel load scale is the reason of the tailback.Driver of a Dhaka-bound bus of Sheba Paribahan, Kabir Mia, said it took five hours to cross eight kilometers of the road. It will be hassle for the home-goers during the upcoming Eid festival, he added.last_img read more


Synthetic Drugs Affect Community Law Enforcement in Different Ways

first_imgA community conversation with youth and adults on the topic of synthetic drugs took place Aug. 31 in the R.I.S.E. Demonstration Center at the St. Elizabeth’s East campus in Washington, D.C.The program, entitled “Back to School with No K2,” focused on the powerful synthetic drug K2, also known as spice. The event washosted by former Peaceaholics co-founder Ron Moten, now part of the Eleuthera Institute Art of Peace.Underscoring the District’s ongoing issue with the substance, the day after the program Metropolitan Police Department detectives, along with Homeland Security Investigation and Drug Enforcement Administration special agents, arrested two men in the largest synthetic drug bust in D.C. history.Siraj Issa, 33, of Northwest D.C., and Yenework Abera, 41, of Alexandria, Va., were charged with possession with intent to distribute synthetic cannabinoids. The two were found with packets of K2 totaling 265 pounds, and possessing an estimated value of $2.3 million dollars.“As I have said, we must intercept illegal drugs at the source. The seizure of such a large amount of synthetic drugs is a relief to both the MPD and the community,” Police Chief Cathy L. Lanier said in a statement. “The hard investigative work that our members pride themselves on has potentially saved countless lives and helped to stem the violence that goes hand in hand with the selling and consumption of illegal drugs.”Saving lives was also the focus of the Back to School K2 meeting, in which two videos were presented showing youth actors demonstrating the negative effects of synthetic drugs on he body.“I’m a living testimony, I was trying to duck the dirty urine,” said one youth who used K2. “But this summer I was part of the D.C. Bosses Program and I’m here to tell you, K2 is not good for you. I know a few people who cared about me in the community that saw me going down the wrong path and it’s like man, you doing the wrong thing, you smoking K2.“You’re looking bad, you’re losing your blow, you looking like a bum,” he added.Questions arose regarding what synthetic drugs really are, marijuana terminology and how they relate to arrest procedures, police-community interaction, and snitching someone out in the community. One youth pointed out that no one was going to snitch on someone when they see the police coming.“They gonna say, the police is coming and I’m being honest; nobody ain’t gonna let nobody get locked up,” said the youth. “It’s up to people like you to fight this and send a message to our community that synthetic drugs will not, will not, break or discourage this community down any more than it has,” Anacostia Coordinating Council Executive Director Phil Pannell responded.last_img read more


Black Participants Wanted for Federal Medical Research Initiative All of Us

first_imgBy Lauren E. Williams, Special to the AFROLike many traditional institutions in America, our current medical research pool is very White. But, the good news is, the federal government is ready to do something about it.This month, the National Institutes of Health (NIH) opened enrollment for All of Us, a new research program aimed at closing knowledge gaps and recruiting more diverse research participants nationwide. With the goal of signing up 1 million Americans, the program could advance individualized prevention, treatment and care for people of all backgrounds – especially Black Americans – and be the largest, most diverse resource of its kind.All of Us Research Program (YouTube Screenshot)“All of Us is an ambitious project that has the potential to revolutionize how we study disease and medicine,” U.S. Department of Health and Human Services Secretary Alex Azar said in a press release. “NIH’s unprecedented effort will lay the scientific foundation for a new era of personalized, highly effective health care. We look forward to working with people of all backgrounds to take this major step forward for our nation’s health.”Black Americans have historically mistrusted the medical profession. So, the lack of Blacks participating in health research is not surprising. But it could be deadly.Black Americans and other communities that have been underrepresented in prior research studies often have worse health outcomes generally – from higher rates of disease and disability to shorter life expectancies, the All of Us research program said, in an email to the AFRO.  Low participation in nationwide research studies can make it even harder for the nation’s top scientists to find out why these poor outcomes continue.To address these issues, All of Us plans to engage participants and improve relationships between them and researchers. Participants will be able to access their own health information, summary data about the entire participant community, and information about studies and findings that come from the program.“Building a diverse participant community will be vital to the success of All of Us, so we can address the many pressing health conditions that disproportionately affect underrepresented communities,” said Dr. Dara Richardson-Heron, chief engagement officer of the All of Us research program in a press release. “The All of Us research program has the potential to help researchers better understand and begin chipping away at health disparities so that everyone can benefit from better health, better health care, and exciting new breakthroughs.”To increase participation, the NIH launched All of Us in seven cities on May 6: Birmingham, Alabama, Chicago, Illinois, Detroit, Michigan; Kansas City, Missouri; Nashville, Tennessee; New York City; and Pasco, Washington. Black community-oriented organizations, including member groups of the National Pan-Hellenic Council, have also partnered with the NIH to help spread the word.About 30,000 Americans have completed the full All of Us protocol including, filling out surveys, giving blood samples, etc., so far. Of these, about 6,000 reported to be African American or have an African-American family member.While these numbers are promising, the program has a long way to go. “We’d like more than 50 percent of our cohort to be people of color, and 70-75 percent to come from communities that have historically been underrepresented in research,” an All of Us research program representative told the AFRO.“The more we learn about our differences, the more tailored our health care can become,” All of Us wrote. “That’s the idea behind the All of Us research program.”last_img read more