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250W, 8 Ohms speakers on 150W, 6-16 Ohms Amplifier.. What is the effect of this?

I'm getting 2 speakers, both with these specifications: - 250W - Studio Monitor M-250 - 3Way - Sensivity 91dB - Frequency response 30-20000 Hz - Nominal impedance 4 Ohms - Crossover frequencies 500/5000 Hz My current - 120W (60W + 60W) at 6 Ohms - impedance of the output for the speakers ranges from 6 to 16 Ohms Is it a good idea to connect these and will it give a reasonable sound?

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  • ymesch Feb 14, 2012

    Made a foul in the title.. the correct power are the 120 Watts

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If your amp states that it will support a range of 6 - 16 ohms, an 8 Ohm speaker will work fine on it. If the speakers you hook up to it are lower than 6 ohms, it may work until you turn it up, then it will either shut down or burn out the finals. If you hook up a speaker that has a higher than 16 ohm, it will not get very loud, and it shouldn't hurt the amp.

Posted on Feb 16, 2012

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hi,
You have to check the ohms of the speakers all spekers should be 8 Ohms or above. if not it will overload the amplifier at high level. The minium ohms impedence of the amplifier is 4 ohms. If you connect two 8 ohms speakers together then the effective ohms will be 4 OHMS then the amp will handle the speakers. If you connect two 4 ohms spekers together then the effective ohms will be 2 Ohms, this will overload the amplifier. You will be able to connect two 8 ohms speaker to left channel or right channel of the amplifier. Check the speaker spesifiction to know its ohms. Make sure all the speakers have an impedence of 8 OHMS or above
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I just wanna check was my little mark 250, older version, ever been opened or changed in any way. I was at the guy that opened it and told me that because of the input power of transformer that is about...


when using amps,, you can't go by the number of the amp to determine what wattage the unit puts out, after checking on this amp,, the white marks that your seeing on the cable, is probably just some of the thermal paste that you apply to any heatsink or CPU ,, nothing to worry about, now as far as the wattage,, here is what they say about that amp, so there is a difference between the 4 and 8 ohm set ups
The Markbass Little Mark 250 bass amp head is a high-quality bass amplifier with a solid-state preamp and an analog power amp. The Little Mark 250 delivers 250W of power into a 4 ohm cabinet, or 150W into an 8 ohm cabinet. This Little Mark has a 4-band EQ, Markbass' VLE (Vintage Loudspeaker Emulator) and VPF (Variable Pre-shape Filter) filters, as well as both Gain and Master volume controls. The front panel accepts both a passive or active bass 1/4" input, as well as a balanced XLR input for acoustic bass pickup systems or a microphone. On the rear panel you'll find a Neutrik Speakon combo jack output that accepts both Speakon or 1/4" speaker cable as well as a second 1/4" speaker out jack. You'll also find a balanced XLR out, unbalanced tuner out so you can tune as you play without passing your signal through pedals, and a Send and Return Effect loop which saves you from losing your signal if one of your pedals dies or a cable in the chain gives out.

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I have speakers that have 60wattsrms@4ohms if i hook them up to this amp (xm-zr704)will i blow them?


hi,
Surlely you can connect these speaker to this amp . Your amp will deliver 150w at 4 ohms if you use 4 speaker setup. So keep in mind that, don't go for a high volume level. If you need higih volume level go for a speaker which will handle 150 w.

ok

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What fuses can i use fo a hifonics 500w 2 channel son of boltar


First off, it is not a 500watt 2 ch amp. Specs are as follows:

150w x 2 @ 4 ohms
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The Son of Boltar uses 60A of fusing

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Yes. Most if not all speakers have impedances which vary with frequency and are rated at a nominal or average impedance. So a manufacturer who rates their speakers at 6 ohms may be more honest or chooses to quote it at a specific frequency. So a nominal 8 ohm speaker may actually measure 4 ohms at 100Hz and 12 ohms at 500Hz but averages somewhere nearer 8 ohms. It is normal for most speaker manufacturers to simplify their ratings so speakers which average at say 6 ohms would be categorised as 8 ohm, and 4.9 ohm averaged speakers as 4 ohms.

As a point of interest - some amplifiers are specified as providing their maximum power at impedances of 6 ohms, and there fore some speaker makers (including those made by same manufacurer as amplifier) will rate their speakers at 6 ohms so they appear more compatible.

Mar 05, 2010 | Audio Players & Recorders

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I have two type-rs hooked up to a mrp-m1000 and its not hitting hard at all! but when one is hooked up it hits harder than two... so is it the way its hooked up or do i need another mrp-m1000 amp? or can i...


If the speakers are rated at 500W or greater, then you'll need two amps to get their full potential. When you connect two to a single 500W amp, each speaker only gets a max of 250W. Also, check the ohm rating for the outputs of the amp and the ohm rating of the speakers as well. Unmatches speaker/amp impendence also results in poor performance. If you connect two speakers to one terminal, the total impedence of the speakers falls by 1/2 (two 4 ohm speakers wire together will result in 2 ohm impedence). So, if you have an amp rated at 4 ohms, you could connect two 8 ohm speakers to a single output. Hope this helps some!

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1 Answer

I found this amp and I can't seem to figure out what the wattage is?


You are probably aware on how to use these output figures, but I'll write a quick explanation on the specifications for future readers anyways :)

The concpet CC-452 amplifier has the following power output specifications:

Calculated at 14.5 volts DC;

At 4 ohms per channel - 45 watts x 2 (RMS)
At 2 ohms per channel - 70 watts x 2 (RMS)
At 4 ohms bridged - 150 watts x 1 (RMS)


This means that your amplifier would provide 45 watts of power each for your front speakers, which are normally a 4 ohm load per side (45 watts for left, 45 watts for right), that's unless they are one of those exotic higher end brands (eg: Boston Z6s which are 3 ohms). Rarely, you will find speakers that are rated at 2 ohms per side, but in this instance the amplifier will provide 70 watts of power into each speaker. On your speaker specifications, you will find a value termed "nominal impedance" which will give you the ohm rating of the speakers being used..

On the other hand, if you "bridge" both channels into a single channel (using a diagram often marked on the speaker terminals of the amp), you could then provide 150 watts into a subwoofer (providing it was a 4 ohm woofer).

It's not recommended to use this amp bridged under 4 ohms..

Some subwoofers may be lower than 4 ohms, and you will not be able to use this amplifier for these types of speakers without risking amplifier failure. Also, some subwoofers may have 2 seperate voice coils, and you will have to use both channels of the amplifier seperately (not bridged) in order to correctly connect this type of speaker for use.




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Wiring for running 4 speakers from amplifier


I asked about wiring up 4 speakers from oe amplifier....not about Tom Tom?

It does not inspire me with confidence in your abilities if you get confused between customers and their questions, so I will look elsewhere for answers.
Thanks anyway

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Help me...


If you had 4 single voice coil speakers you can create either of those 2 ohm or 4 ohm setups. If you run 2 of them in parallel you will get the 4 ohms. If you run 4 of them in parallel you will get the 2 ohms. In parallel I mean that you connect the positives together and run them to the positive on the amp and the connect the negatives together and run them to the negative on the amp. Let me know if you need more help. Good Luck.
-Andrew Hawkins

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Planet audio vx3002


Sorry wayne2953 but this amplifier isn't stable @ 1ohm loads. This amplifier would be better suited running a pair of 12's, 4 12" subs could run if configured correctly but the subs would be underpowered and probably not sound very good.

Features of Planet Audio VX3002:

  • Max Power (2 Ohms) : 300W x 2
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  • Bridged Power (4 Ohms) : 600W x 1
  • Signal-to-Noise Ratio : 102dB
  • Frequency Response : 20Hz-20kHz
  • Dimensions : 10-5/8"W x 2-7/16"H x 16"L

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