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|Frequency Response||57 Hz ~ 20 kHz|
|Maximum Input Power (RMS)||2x 50 watts|
|Maximum Input Power (Peak)||2x 100 watts|
|Woofer||6.5" Glass Composite Woofer w/ 13.3oz Magnet and rubber surrounds|
|Tweeter||Dual 1" Silk Membrane Dome (Pivoting) 20° swivel|
|Sensitivity||85dB ±2dB (1.0m/2.83V)|
|Cut-Out Dimensions||ø8.07" x 4.56" (ø205 x 116 mm)|
|Overall Dimensions||ø9.7" x 4.8" (ø246 x 122 mm)|
|Mounting Depth||4.56" (116 mm)|
|Weight||4.2 lbs. (1.9 kg)|
Fs = resonant frequency of loudspeaker moving mass (in free air)
Re = electrical resistance of voice coil
Qts = total Q of loudspeaker ((Qms x Qes)/(Qms + Qes))
Qms = measurement of the control from the speaker's mechanical suspension system
Qes = measurement of the control from the speaker's electrical suspension system
Vas = equivalent air volume of moving mass suspension
Cms = stiffness of the mechanical suspension
BL = motor strength of the speaker
EBP = Fs / Qes
XMAX = maximum linear excursion
SD = surface area of the cone
Questions and Answers
How does it works? Each speaker reproduces a mono mix (one source) .
Two mono speakers are two mono signals, sometimes called dual mono. Why is not stereo? Stereo provides a mixture of the environment in two separate channels. For example. Do the test. Cover one ear and you still will hear sound generated from either your left or right, alas if you cover your left ear sounds coming from the right will seem stronger (louder) than those from the left and vice versa.
That is stereo. This is a distribution of the space onto two channels and not two separate mono channels.
With surround something similar will occur. You have the environment split into 5,6,7,n number of speakers; however, there is a catch. This is only true for the environment as main dialogues are normally mono in the centre channel with some leak onto the left and right channels.
So…what you can do is to set up a quadrophonic system or a dual stereo system. This will not give you surround but it will give you a richer experience.
I am unsure if you have a surround amp. If this is the case I would recommend to go with a 3 point surround using left, right and centre and the forth speaker for parts.
If you don't have a surround pre/amplifier, then I would just use two stereo channels and add a bit of delay ( you can use transistors and resistance to build your own or simply using an out of the box delay.
Measure your room. And add the second set at 1/4 of the wavelength of your Freq of interest. This creates an interesting atmosphere but it is not surround.
What makes surround is the decoder , not the speakers.
and right sound
If my rooms have two speakers in the ceiling, meaning I don't need to run a single speaker in stereo, why would I choose this versus the Caliber series - 4103 or 4104 for instance? Which is the better option if I am going to have two speakers in the room already?
My ceiling is 20 ft. high.
Also, what impedance would the AVR see?
I had anticipated tepid performance at best I could not have been more
wrong. We have fairly large rooms. I installed the speakers (two pairs)
in a room of 36' x 51' x 17' (ht). I augmented them with a Klipsch C3 and
a Klipsch subwoofer KSW-10 as their speaker drivers approximate the
characteristics of the 4619's.
About all that we watch in that room is the evening news, so I had fully
expected this combination to prove adequate. What a surprise. Once I
got the receiver (150W RMS x 5) "dialed-in," I realized that I had grossly
underestimated the 4619's. I played some acoustic music DVD's and
was very pleasantly surprised. (I've performed acoustic music since the
1960's.) I then tried The Stones', Bridges to Babylon and Voodoo Lounge
DVD's. Very impressive not only in raw SPL but presence, too. And, yes, I
intentionally over-drove them (albeit, briefly) but the speakers took it
all in stride.
I strongly urge that you construct/buy substantial enclosures for these.
Without belaboring the physics involved, stay away from cubical dimensions.
I'd suggest that you consider modeling your efforts on the Polk RTI-A3's
doing so worked well for me. Do construct them from mdf or something
of similar density. Make sure that they will "sit" square to the ceiling to
obviate "buzz." Lowes has a 3.5 gallon bucket which will do in a pinch
(51596-03205, I think!). Be sure to remove the handle first, lest the result
sound as though a squadron of angry African bees has taken up residence
in your attic. (I used these buckets as a stop-gap until I got around to
making more proper enclosures.)
This thread offers excellent installation recommendation specifics do follow
them. Most specifically, make sure that you run-in the four screws on each
speaker before attempting to install them. True to form, I got a speaker
with one completely un-threaded screw. (Make sure that any substitute
screw has an un-threaded gap ... or, at least, reduce the torque setting
on your driver-drill. A fine thread will result in better and uniform binding
force, though it's not likely to prove critical.) To minimize mess, you might
consider putting your keyhole saw through a large diameter paper cup and
cutting from the room-side of the ceiling.
On a more general note, I've been buying from MonoPrice for quite some
time and their service has always been exemplary.
The major issue with these speakers are the mounting screws. They are thin, very light weight, and phillips head. I have installed many in wall and ceiling speakers, but when using these, the screws tend to bend and the bending pops the locks out the tracking. After running into this issue with about 25% of the screws, I replaced them with quality torx screw from Lowes. They are very inexpensive, and from now on when installing these speakers, I will do this with every screw before hand.
Do yourself a favor and pick up a half of pound of screws for an extra few bucks. You won't regret it, and you will have plenty left over for fixing things around the house.
PROS: Economical great sound.
CONS: A bit difficult to reinsert the metal grill after installation of the speaker in the ceiling. But overall, not so bad.
PROS: The price is outstanding. Well packaged and no problem with delivery
CONS: Non as of yet
PROS: - Cannot beat the price
- Great Sound Quality
- Very easy to install, some people say they had issues with the screws on the speakers, I had no issues.
- Quick shipping and the speakers were not damaged during shipping.
CONS: - The jumper cables between Stereo (one speaker in a room) and Parallel settings on the speakers can be difficult to move from one setting to the other. When I switched the speaker settings from Stereo to Parallel setting, I broke off the Mono Stereo connection points on a quarter of the speakers I installed. Not a big deal because I am going to keep them on the Parallel setting but might be an issue for people who are going to be change the speaker settings back and forth.
After first installing the speakers and firing them up from my receiver amp, I was a little disappointed by the sound, but after going through the speaker tuning process on my receiver I am very impressed with the field of sound. I'm assuming that their dynamic range is far superior to my previous speakers, so make sure to tune your receiver after installation.
PROS: Price! These are half the price of the same speakers sold at Lowes/Home-depot/BestBuy!
Quality! These speakers are beefy, and well made with quality materials!
Installation (once holes are made [see Cons]) is very easy and looks great.
Aesthetic! Quality materials means a heavy duty speaker grill made of a thicker gauge material than comparable speakers, meaning that don't easily "dent" or bow.
CONS: Drilling/cutting the holes necessary for installing these speakers is not a beginner level task. Dry wall and/or plaster work is much harder than it seems, if you want the finished installation to look good. Having the right tools is essential! For the round speakers, you can order a specific large radius hole cutter tool. I recommend: http://www.amazon.com/gp/product/B003LR5U7C/ref=oh_details_o04_s00_i00
I am very happy with the sound quality of my Monoprice speakers and I would strongly recommend buying these. The sound quality is top notch and easily matches (if not exceeds) certain retail-purchased speakers.
As far as installation goes, I followed the recommendations listed in the other reviews and they were a great help. THe most important bit of information that I learn from these reviews was to loosen (or rotate) the screws that activate the clips that hold the speaker to the ceiling BEFORE placing the speaker into the ceiling. Sometimes the initial torque that you place on the screw can cause it to jump out of the cylinder that guides it. Therefore, if you rotate the screw around beforehand, it works its way through the cylinder and loosens it up so that when you put the speaker in the ceiling the screw won't jump from its housing.
PROS: Great quality/craftsmanship, great performance, much cheaper than similarly priced retail models.
CONS: Minor Issue: The screws used to activate the clips that hold the speaker to the ceiling sometimes pop out of their housing if not properly loosened before installation (see review for more details).
1 year ago
PROS: Unbelievable sound for the money, great product! Would recommend them to anyone!