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Question about Aragon 28K MKII 2-Channel Amplifier

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Dual mono? Is the 28 MKII designed and built in a dual mono configuration (with a separate power suply per channel)? Or is it simple stereo?

Posted by Fernando Gonzalez on

  • Fernando Gonzalez
    Fernando Gonzalez May 06, 2007

    power suPPly, that is... :-)

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Anonymous

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  • 3,130 Answers

If it had dual power supplies, the unit would still have sound on one channel

Posted on Jun 16, 2007

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I have a QSC RMX 2450 in which both channels are driven even though the amp is in stereo mode and I am only sending a signal into input channel one. It acts as if the amp is in parallel mode but I have...

My thoughts are that the amp has a poor channel separation but usually you can only hear a very quiet trace of the sound through the undriven channel. I agree with Taurus and make sure that the switch is making contact and moving all the pins to the proper points. This is a Home stereo amp, it comes with an extended 6 year warranty if you register it, I would check into getting a warranty repair before doing anything to it! Looks like a nice quality piece, those dip switches are a little bit confusing but the way it's built it is necessary to have them. It has a Dual Mono amp section so there is no way that any sound can be crossing over unless the swithches are directing it. The only way that can happen is in Parallel or in Mono. You could be in Stereo / Mono which would input both channels and output 3 settings a 1, 2 in Stereo & a Mono, Try hooking a speaker up to the Mono/ Bridge outputs and see if it's louder than just hooked up to 1 or 2. Parallel inputs will give you Mono 1 & 2 with Bridge off, and might give you Mono 1 & 2 with a bridged Mono if the bridge is on, like 3 channels all mono with one getting twice as much power as the 1 & 2 will put out. Although they have it labeled to not use it in those settings it's possible to do. I can see why you would be checking the switches.
It may actually be labeled incorrectly , as strange as it seems, many Chinese products have been made with labeling errors. Plus and minus have been wrong on Asian Made car amps so it's not that inconceivable that this may have some incorrect settings shown?
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Stereo channels do not collapse to mono.

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Can i hook this amp to a 2 channle out put stereo?

Sure. Specs are listed below. I think it's designed for regular 2-channel input, isn't it?

jturcotte_41.jpg

Front Channels: 100 W RMS x 2 @ 1.5 ohm-4 ohm (11V-14.5V)
  • Rear Channels: 25 W RMS x 2 @ 1.5 ohm-4 ohm(11V-14.5V)
  • Subwoofer Channel: 250 W RMS @ 1.5 ohm-4 ohm (11V-14.5V)
  • THD at Rated Power: <0.03% @ 4 ohm (F&R), <0.05% @ 4 ohm (Sub)
  • S/N Ratio (F&R): >108.5 dB below rated power S/N Ratio (Sub): >95 dB below rated power
  • Frequency Response (front and rear): 5 Hz-30 KHz (+0, -1dB)
  • Frequency Response (sub channel): 5 Hz-500 Hz (+0, -1dB)
  • Damping Factor (front and rear): >200 @ 4 ohm/50 Hz
  • Damping Factor (sub channel): >500 @ 4 ohm/50 Hz
  • Input Range: switchable from 200mV-2V RMS to 800mV-8V RMS
  • Differential-Balanced Input Topology: (3 pairs of inputs)
  • Front Crossover: fully-variable (50 Hz-5 KHz), selectable- slope BP or HP (12 or 24 dB per octave)
  • Rear Crossover: fully-variable (50 Hz-5 KHz), selectable- slope HP (12 or 24 dB per octave)
  • Sub Crossover: fully-variable (40-200 Hz), selectable-slope LP (12 or 24 dB per octave)
  • Preamp Output: 2-channel (full-range or LP)
  • Bass EQ: Variable boost up to 15db
  • Infrasonic Filter: defeatable 24dB/octave at 30 Hz
  • Left minus Right Ambience Circuit: ambient effect for rear channels
  • Front and rear speaker output connections: accept up to 8ga. wire
  • Dual mono subwoofer output connections: accept up to 8ga. wire
  • +12V and Ground connections: accept up to 4ga. Wire
  • Dimensions: 19.7"L x 9.25"W x 2.36"H
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    Features
     

    • 2-ohm dual (per channel) : 1200W
    • 4-ohm dual (per channel) : 900W
    • 8-ohm dual (per channel) : 600W
    • 4-ohm Bridge : 2500W
    • 8-ohm Bridge 2100W

    • Indicators for : Signal, Clip, Power, AC Mains, Fault, Bridge, Temp.
    • Housed in a rugged, all-steel 2U chassis
    • Microprocessor-controlled protection system.
    • Flow-through ventilation from front to back.
    • Internal heat sinks with forced-air cooling for rapid, uniform heat dissipation.
    • EIA Standard 19-inch rack mount width
    • Safe with all types of loads.(2 to 8 ohms in Stereo, 4 to 8 ohms in Bridge Mono.)

    Inputs 

    • XLR-¼" combo connectors: One per channel
    • 3-pin female XLR connector and TRS ¼" phone jack accept balanced or unbalanced signals.
    • 3-pin Phoenix-style connectors (2-channel models only),One per channel, accepts balanced or unbalanced signals.

    Output 

    • Balanced XLR connectors (2-channel models only)
    • One per channel, 3-pin male XLR connector in parallel with XLR-¼" combo and Phoenix-style input connectors for daisy-chain operation.
    • 5-Way binding post output connectors: One pair per channel; accept banana plugs, spade lugs or bare wire.
    • 4-Pole Speakon output connector (2-channel models only)
    • Accepts a 4-pole Speakon connector.

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    Help!

  • CPU: Intel CeleronD 2.66GHz CPU
  • Motherboard: ECS 661FX-M
  • Chipset: SiS 661FX
  • Devices
    • 40 GB HDD
    • Combo DVD-ROM/CDRW Drive
    • Floppy drive
  • Memory: 128MB DDR333
  • Operation System: Windows XP Home Edition SP2
  • Accessories Box
    • Keyboard
    • Mouse w/scroll wheel
    • Stereo Speakers
  • Features
    • Integrated SiS Real256E Graphics. SMA up to 64M.
    • Open AGP 8x slot, 3 x PCI slots (1 used)
    • 6 x USB ports (4 back, 2 front)
    • Build in AC97 audio codec.
    • 10/100 build in onboard LAN port and 56K Modem
  • Not finding what you are looking for?

    Open Questions:

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    I bought a second hand blackweb home theater system bwa18s8003 that has only the receiver and subwoofer how can I use this without the speakers I bought a second hand blackweb home theater system bwa18s8003. I am not familiar with speakers and these home theater systems. I thought a subwoofer was a speaker but after getting this home and doing research I see now that there should have been five little speakers making this like a surround sound I suppose. My friend thought it was a home stereo and for $10 I thought I found a heck of a deal. After reading I see that it's not recommended to switch up brands with this kind of systems. I hope I still have a deal. I'm wondering what kind of speakers (this is BT) I need and if second hand speakers possibly bought at thrift store, that aren't Bluetooth or blackweb brand may work. If not does anyone know a cheap place to get the right speakers, if they do indeed have to be replacements only to this system. My hopes was I have a little Bluetooth setup to play music off my phone and a stereo. I am asking for options as to what I can do with this system, being just the receiver and subwoofer without having to spend much more if any more money. For example, can I just plug it to my TV, etc. How can I even check to see if the two parts work before I put time and more cash into it since a subwoofer isn't a speaker how do I know if I can't the sound? I just guidance all around, wondering if I got a deal or do I need to kiss that money bye, and recycle or toss it. Thank you in advance for any directions and/or ideas.

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