Tampilkan postingan dengan label Subwoofer. Tampilkan semua postingan
Tampilkan postingan dengan label Subwoofer. Tampilkan semua postingan

Rabu, 12 Agustus 2015

BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer

BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer..


BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer

Buy BIC America F12 12-Inch 475-Watt Front Firing Powered Subwoofer By BIC America

Most helpful customer reviews

189 of 195 people found the following review helpful.
4Truly a Great Bargain but....
By jchussey
As an audiophile who has had numerous very high end (Meridian, Cello, McIntosh, B&W, Proceed...) components in and out of my systems over the years, I can say wholeheartedly that the F-12 is an outstanding value for the $170-$200 retail price. I bought it for my 13x20x9 budget media room which is currently under construction but have been using it in my 2 channel system for kicks over the last two weeks. The low frequency extension is excellent(down 4db at 25Hz in my room) and I would consider it pleasantly musical with speakers capable of flat response at or below 80Hz (which isn't asking much). It is when this sub is paired with very small speakers that it begins to tarnish; typical of many ported subwoofers, it just doesn't play well above the 80Hz range. For example, Paired with NHT Superzeros, which fall off a cliff at about 85-90Hz, some of the "punchiness" is lost. This frequency response trough is most likely the reason why some reviewers claim that the F-12 sounds "muddy".

With the right speakers and set up correctly (with a decibel meter), the F-12 is an outstanding sub for the asking price. Truly a great bargain and one heck of a warranty.

113 of 120 people found the following review helpful.
5Hard time picking between the PSW505 and F12? Let me help, I own both
By Dave295
Let me make myself clear before I begin. I love Polk, I originally was going to make my system all Polk however, as any half decent audiophile knows, one company simply does not make the best of everything. I have Polk Audio Monitor70 Series II Floorstanding Loudspeaker (Black) Each as fronts Polk Audio CS10 Center Channel Speaker (Single, Black) and BIC America Venturi DV84 2-Way Tower Speaker, Black (Single) rears. I own the Polk PSW505 and have been using it on my main surround system for the past 7 months

I wasn't content at all with my Polk PSW505 as you can see in my over 1000 word review of the PSW505 on Amazon, so I saved up money to try the F12 and planned to send it back after testing it out. Honestly, I didn't want the f12 to sound better than my Polk. I tried to tell myself the no name Bic f12 could not compete with the Polk PSW505, that sub is practically God of home subwoofers on Amazon. As the current owner of both, I would advise you to buy this f12 and never look back.

My main issue with the PSW505 was port noise. When my Polk sub hit below 30 hertz it sounded just awful and unless you just watch Teletubbies, Dora the explorer, and Sesame Street your sub will be forced to hit below 30 hertz. This becomes very important if you are watching blu rays with Dolby True HD or DTS HD Master Audio. This sub can punch, roll, and roar much beyond its $200 price tag. With my Polk PSW505 it struggled to hit some lows in Dark Knight among other Blu rays as well as music with heavy bass. That is not the case with the F12 not only will it hit these low notes, but it will shake the room while maintaining clarity.

I have seen quite a few negative reviews on the build quality of this Bic F12 I would agree and disagree. I have disassembled the Polk 505 multiple times so I am more than aware of its build quality, but have not yet taken apart the Bic. I believe the PSW505 has a better exterior finish than the F12, bic clearly did not spend as much on the cabinet. Bic spent its money on the driver and amplifier, which far surpass the Polks driver in quality. I would know this because Polk has sent me two PSW505 drivers(the actual 12 inch speaker) and they somehow even sound muddy and distort when not inside the cabinet. The F12 has a very nice metallic looking driver and it does outperform the PSW505

I know its difficult to believe that this f12 sub will outperform the tried and true 505 but it really does. Don't stray away from the Bic just because it isn't a big brand. Polks subs have a premium to them because of the brand. With this Bic all your paying for the sub. For example Klipsch, Energy, and def techs are great well-known subs but they have a markup because of the name. In contrast HSU, Outlaw, Epik, and SVS are not household names but they will destroy the big names in performance without the markup.

Don't let the brand scare you! Bic customers are some of the happiest in home audio. If you have any questions about the differences between these 2 sub-woofers please leave a comment and I will be happy to respond.

60 of 65 people found the following review helpful.
5Stop researching and bring this bad boy home.
By Sim
From my own experience two most important components in a home theater system (for movies) is your center speaker and your sub-woofer. What ever you do make sure you get the best one you can afford and if like me your budget is less than $400/-, you have Bic F12 as a very serious contender for top spot.

I spent almost a month searching for a sub (for 50:50 music/movies), researching in lots of online forums and auditioned in couple of different local stores. High on my list were:
- Emotiva Sub 10: No longer being sold :(
- Emotiva Sub 12: Slightly out of my budget
- Elemental Design A3S-250: Past quality issues and too long a wait to get one
- Def Tech. ProSub 800: Checked this out in local store but I was not impressed by it
- Velodyne Impact 10: Checked this out in local store, did not like it as it could not go low.
- Polk subs: Don't bother (I tried couple and nothing impressed me) although I own Polk speakers which I love.

Although I did not audition this Bic but based on online forums and reviews I ordered this Bic and I have no qualms in saying that dollar for dollar this sub is perhaps the best value out there.

Pros:
- Not boomy and can go low effectively.
Tried out couple of bluray's - Dark Knight sounded fabulous, it has this low rumbling sound track through out the movie and the sub did an excellent job with the same. Lord of Rings (return of king) was again excellent, especially the elephant war scene. I could literally feel the room shaking and the intensity building up.
- Easy connectivity with LFE
- Phase switch (although I never used it)
- Good with music (for the kind of music (pop/rock) I listen to this is a very good sub)
- Solid construction
- Strong grill that I know will withstand my toddlers continuous barrages

Cons:
- Size (but then its 12 inch sub) and I knew what I was getting into.

Other things to look out for:
- Use a decent cable. I used a cheapo RCA cable which was sitting around to connect this sub to my receiver and everything sounded horrible (My cable a belkin sub woofer cable was delayed in transit). Belkin cable made a huge huge difference and for a 25ft cable it was only ~$6/-
- Room placement is critical, I tried many different places in the room before I was able to find the sweet spot. Since the sub is heavy and hard to move, I mounted the sub on a plant moving caddy, ($3/- from a local store), moving the sub was very easy until I found the sweet spot.
- Know your sub's limit, I am crossing this sub at 90hz and it compliments my Polk's very very well. My Polk's are doing a better job in handling frequencies above that.

Gist:
- There are better subs out there (Hsu or Svs) but I don't think there is anything that offers better value. This sub is great, it rocks my house with tight bass and does the trick for music, I cannot be more pleased. I will likely get another one to compliment the one I already have.

My set up:
- Polk Monitor 60's as front, Polk CS2 as center
- Yamaha RX-V867 receiver
- Living room dimension: 15' x 25' x 10'

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Kamis, 09 April 2015

Boss Audio R1100M Mosfet Monoblock Power Amplifier with Remote Subwoofer Level Control

Boss Audio R1100M Mosfet Monoblock Power Amplifier with Remote Subwoofer Level Control..


Boss Audio R1100M Mosfet Monoblock Power Amplifier with Remote Subwoofer Level Control

Grab Now Boss Audio R1100M Mosfet Monoblock Power Amplifier with Remote Subwoofer Level Control By BOSS

Most helpful customer reviews

228 of 256 people found the following review helpful.
3Optimistic power claims
By Nicholas J. Rose
I'm an electronics engineer so I care about specifications. This amplifier is a low cost item which offers reasonable value, but I wish they would be more honest with their claims.

My measurements show 21.5V rms continuous into 4 ohms at the onset of clipping with a 14.12V supply. This is 115W rms.
With no load it gives 23.9V with 14.12V supply. This corresponds to 142W rms peak.

So, essentially it is a 100-150W amp (4 ohms), or at best 200-300W (probably less) into 2 ohms. The claims of 250W into 4 ohms or 1100W into 2 ohms are at best ridiculously optimistic.

I would suggest that it is worth paying a bit more to get something better.

143 of 167 people found the following review helpful.
5The Real Deal
By Ron M
Sorry folks...

But there are a couple of myths, being two pieces of (...dare I say it?) outright misinformation that have become attached to this compact masterpiece, ...even though I'm sure both of them were offered with the best of intentions.

As for me, I thought I'd wait until I'd driven it hard and bounced it around the Aussie Outback for a couple of months before any attempt at reviewing it.

A little background: I'm an Audio Director/Sound Supervisor in my fifth decade of ongoing work in this field, most of it live (or "as live") and on location.

My Boss Audio R1100M is used to drive either full-spectrum sub plus line array or horn plus ported-woofer long range speakers (a choice dependent on the vagaries of weather and/or crowd numbers) at impedances from four to sixteen ohms, ...the only constant factor being the need to rely exclusively on DC vehicle power.

The verdict: ...five stars. No doubt whatsoever.

The Boss Audio R1100M delivers far more than something that's roughly the price of a case of beer should ever be able to do.

(What a crying shame that its excellent internal fan-cooling arrangements don't actually extend to chilling beer. Now that WOULD be a world-beater...)

To those well-intentioned myths:

First, "The Remote Subwoofer Level Control doesn't work."

Not when the amp's switched to "Full Range" it doesn't.

When it's in "Full Range", it isn't expecting to be driving just a subwoofer, is it? Switched to "Low Pass" (i.e. subwoofer) mode, the remote control works a treat.

Second, "It's under-powered."

Hang on a cotton-picking second, did you honestly expect to have mountain-moving power for the price of a case of cold ones?

Now look at it's main fuse. It's 30 amps. That's your lot, any more and it all goes dark and quiet until you replace the fuse.

Time for some basic arithmetic, 12 x 30 = 360. That's 360 watts of total power going in.

Wait a second, my alternator kicks out a gargantuan 14.4 volts! Whoopee! Hurrah! Huzzah! Hallelujah! I've now got an earth-shattering 432 watts at my command!

...Uuh, ...um, ...well, ...er, ...I WOULD have if everything inside the immaculately designed Boss-Box yielded 100% efficiency.

Sadly, 100% efficiency from ANY power system is the stuff of Nobel Prizes and/or science fiction.

(Trust me when I say that you won't ever again need to consult anyone's review of anything after YOU'VE developed a power system that's 100% efficient.)

Meanwhile, back in the "Real World", guess what?

With power being wasted to generate heat, run cooling fans and the losses inherent in each and every electronic step taken, the BEST amplifiers are around 25% efficient.

25% of 432 watts?

That would be 108, just a tad LESS than I (and others) have observed to be the continuous power actually (and reliably) delivered from this tiny Boss-Box into 4 ohms.

The controls all do exactly what they're meant to do. The sound is clean, gutsy and free of artefacts, so, by way of a conclusion, here's the outcome of some OTHER basic arithmetic I did prior to buying it...

I can't buy an aluminium housing of comparable ruggedness for the price of this entire amplifier.

14 of 16 people found the following review helpful.
5This little amp packs a big punch!
By Tumor Boy
I use it to power two 10 inch kicker subwoofers and it has no problem doing so. It sounds better than my old pioneer amp! Its smaller than most amps I've seen and BOSS glows blues when it turns on which is just a cool bonus. It only has one channel so if you are going to hook two subs up to it you have to bridge them but that lowers your Ohms and sounds better anyway in my opinion. It is a great amp and you can't beat the price, highly recommended!!!

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