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Reload Thread: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

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    One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    Ok, In my search for a good sub amp, I have basically decided one of these 3 are gonna be it. The sub in question is an older Diamond Audio sub, 12" comparable to the tdx's if I recall correctly, 150w RMS in approx 1.75 or so cubic feet (sealed). First up to bat is the Us Acoustics USA 2100 amp. Here are the specs:

    USA2100
    OUTPUT POWER
    Per channel @ 4 Ohms
    @ 12.9v input 100Wx2CH
    Per channel @ 2 Ohms
    @ 12.9v input 150Wx2CH
    Bridged Mono @ 4 Ohms
    @ 12.9v input 300Wx1CH
    TOTAL HARMONIC DISTORTION Less Then 0.01%
    NOISE below rated output 104 dB
    SLEW RATE 20 volts/microsecond
    PHASE RESPONSE Lagging 12 Degrees at 20 kHz
    INPUT SENSITIVITY 100 mV-2.2 Volt
    INPUT IMPEDANCE 56 Kilo Ohm
    DAMPING FACTOR Greater than 100
    PROTECTION
    Reverse Polarity Yes
    Thermal Yes
    Short Circuit Yes
    D.C. Yes
    IDLE CURRENT 0.6A
    FUSE RATING 35A
    SIZE inches (mm) Length 11.4 (290)
    Width 6.3 (160)
    Height 1.9 (47.3)
    WEIGHT lbs. (kg) 9.02 (4.1)

    Cost is $130 plus tax, locally.
    Next up is the Hifonics Nemisis. Specs:

    General Specifications


    * RMS Power Range : 150-300 Watts

    RMS: Root Mean Square is a formula that provides a reasonably accurate means of measuring and comparing continuous AC power. The use of this measure is preferred when matching system components, like amplifiers and receivers.
    * Number Of Channels: 2

    Number Of Channels: Common name for a complete amplifying stage in any audio amplifier. Most amplifiers are denominated as 1, 2, 4, 5, or 6 channel units. Each of these is a discrete audio amp on its own, capable of taking a small line signal input and amplifying it sufficiently to be heard on an appropriate speaker. Some amplifiers are capable of bridging two channels together, to form one channel of double the power of each separately. The manufacturer's instructions differ widely on how to accomplish this, and each must be followed exactly.
    * Maximum Power: 600 Watts

    Maximum Power: The amount of power a speaker is estimated to handle during a brief high-intensity musical burst. Since this can vary with both frequency and amplitude, it is a much less accurate way to judge speaker durability and performance than RMS.
    * Built In Crossovers: Yes

    Crossover: A device or passive circuit used in systems with separate tweeter and/or midrange Drivers. It Rolls Off frequencies above and below certain points in the range, to allow the sound to be tailored for the specific driver to which it is sent. Most speakers have crossovers that consist of passive elements such as capacitors, coils, and resistors to separate the various frequencies. In a bi-amped or multi-amped system, the crossover is an active device that feeds the various frequency bands to the inputs of the amplifiers that operate the individual drivers.
    * Channel Separation: Yes

    Features


    * 150W x2 @4 Ohms
    * 300W x2 @2 Ohms
    * 600W x 1 @4 Ohms
    * Hofonics Twentieth Anniversary Heat Sink Design
    * Ultra - Fi Mosfets
    * SPC - Simpatico Coil Design
    * HSMD - Hifonics Surface Mount Design
    * Fully Adjustable Accu - Cross - Crossovers
    * PWM Mosfet Power Supply
    * Line Output for Amplifier Daisy Chaining
    * Variable Bass Equalization
    * Sub - Sonic Filter
    * 4 Gauge Power Connectors
    * Additional High Speed Mosfet Output Devices
    * Maxi - Fuse
    * Dimensions: 14.9" L x 10.4" W x 2.4" H
    Price is $150 Locally, plus tax.And last but not least is the Xtant class D mono amp. Specs:

    Specifications
    Number of Channels 1
    Watts per Channel 4 Ohm 150
    Watts per Channel 2 Ohm 300
    Bridged Mono @ 4 Ohm n/a


    Features
    # Regulated Transitional Class D Technology
    # Fully Regulated PWM Power Supply
    # N-Channel MOSFET Design
    # Defeatable Balanced Input
    # Continuously Variable 24dB/Oct Low Pass Crossover 40-120Hz
    # Continuously Variable 24dB/Oct Subsonic Filter
    20-80Hz
    # Variable Bass Boost at 45 Hz 0-12dB
    # RLC Connector
    # 2 Full Range RCA Outputs

    This one goes for $99 shipped off of ebay.

    Also keep in mind that Another factor that will play into this decision is future expansion of my system. In other words, I''ll be upgrading the mids and highs one deay, and will want another amp from the same company to run them preferable. For the Xtant there is the 2002, and for the us acoustics I could always just get an identical 2100 for the mids and highs. Not sure on the hifonics, but I'm sure they have something comparable.
    So thoughts? Recommendations? Suggestions. Rants/raves/slaps upside the head? Thanks so much for any advice!







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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    Quote Originally Posted by Ne1
    Rants/raves/slaps upside the head? Thanks so much for any advice!
    You are an idiot




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    Yeah, but I knew that much already




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    Anyone else have any experience with any of these amps?




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    Quote Originally Posted by Ne1
    * Channel Separation: Yes
    I'm sorry.......but that's funny. "Yes, our amp does have channel separation, but we're not going to tell you how good it is." Oh well, I guess it's better that they said yes instead of no



    Anyways, my buddy has a USA amp. Good amp, great for the price. Does what it's supposed to do and doesn't sound half bad. Played with Xtant before, great products

    Personally, I'd go with either the USA or the Xtant....and probably the Xtant before the USA.




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    well. you said its 175w rms?

    i think sealed that will at least double. so 300w?

    why are you set on these three amps? im sure there are much more amps that will do 300~500w easy and can cost equal to or less than that.

    from those, i would do the same as squeak, 130 is a good price, 99 is a great price, but 150 is a little bit more..

    whats your budget? and are you interested in warranties? im sure somone around here on this forum has an amp that would bump hard for your setup.
    www.thezeb.com is a good site to surf through. i just wish their search button had a "watts per channel" filter similar to ebay. would make it alot eaiser to find what you are looking for eh?

    //edit
    this would suit you, has a warranty, and is within your pricerang.. and is 300w rms.

    http://www.thezeb.com/detail.aspx?ID=6501

    hifonics is not the best by all means, but it would do what you want it to for sure.




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    Not impressed with my US Acoustics 4085. After about '01 they changed designs and they haven't been the same ever since. IMO the Xtant and the HF are a notch or two (or three in the case of the xtant) better than US Ac.




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    "I'm sorry.......but that's funny. "Yes, our amp does have channel separation, but we're not going to tell you how good it is." Oh well, I guess it's better that they said yes instead of no "
    Heh, I totally missed that portion of the specs. I guess you gotta put in whatever good stuff you can about the amp to try and sell it!

    Thanks all, thats exactly the info I was looking for, I will also take a closer look at that hifonics, thats right around the specs I am looking for as well, with a good price. I'll see what else the zeb has to offer while I am at it.
    The budgets at about 120 with shipping, so I have some room to work with. I'm not exactly set on any particular amp, but for the money, the xtant was edging toward the top in my book anyways. Basically this was just what was readily available for a good deal. Thanks again for all the input!




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    you could pawn off some of that gold and buy a nice amp




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    Re: One last question. Hifonics/US Acoustics/ Xtant comparison? -Long post-

    nope, gotta keep it real ya know?




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