15 replies to this topic

[mcaville]

I am planning on installing a Mutant Ascension 4 amp to run a set of Vibe SEK 60 components and a Mutant Conquest sub. The specs are as follows:

Mutant Ascension 4

Model - MTASC4
Channels - Four
Power Output - 4 x 85W RMS 4 Ohms Stereo
4 x 140W RMS 2 Ohms Stereo
2 x 280W 4 Ohms Bridged
Pass filter - Yes High and Low Pass Filter
Power Supply - PWM full MOSFET supply
Frequency Response - 10Hz - 40kHz
Power Supply - PWM MOSFET
RCA INPUT / OUTPUT
3 Way Protection Circuitry

Vibe SEK 60

115W RMS / 345W PEAK
50W RMS Minimum Input
90DB Sensitivity
Frequency Response 50hz - 20khz
Impedence 4ohms

Mutant Conquest

RMS Watts - 300W
Max Power Watts - 600W
Frequency Response - 34Hz – 2500Hz
Impedance - Dual 2ohms
Sensitivity - 89dB


My question is will this setup work? I am trying to understand the theory of Ohms but i wasn't sure whether i can run a set of components that have an impedence of 4 ohms and a sub that has an impedence of only 2 ohms of of the same amp. I am planning on bridging two of the cannels to run the sub. Can somebody offer some advice.

[Ouster]

It's dual 2 ohms. Subs normally have dual voice coils to increase the flexibility of installation - you can wire the voice coils in parallel to create a 1 ohm load, or in series to create a 4 ohm load. Or you can wire two subs in series together with both voice coils in parallel to show a 2 ohm load.

Your amp pushes out 85W when a channel sees a 4 ohm load, or 140W when a channel sees a 2 ohm load, or if you bridge two channels you'll be able to get 280W if these channels see a 4 ohm load.

So it looks like you can wire up the two components to two of the channels, and then bridge the remaining two channels together and wire the sub up to them, making sure the voice coils are wired in series together.

Make sense?

[daemonchild]

[Ouster]

With great power comes great power? Pffft, xkcd got that wrong.

[daemonchild]

With great power comes great power? Pffft, xkcd got that wrong.

I couldn't resist posting it though.

[mcaville]

Ok, this is making some sense now. With everything thats been said i'm wondering whetehr or not this amp is powerful enough to drive the speakers. I'd heard that ideally i want the amp to have a higher RMS than the speakers. With my proposed plans this would not be the case. What problems might this cause?

[Ouster]

Should be fine, as long as you set the gains right and you don't clip the speakers.

[daemonchild]

With great power comes great power? Pffft, xkcd got that wrong.

I couldn't resist posting it though.

Couldn't RESIST. Get it?

[Ouster]

Oh, bam - you got me there!

[Brams96]

If you want more power why not go for something cheaper like the JBL GTO 1004 4 ch amp? Its 100Wrms/ch @ 4ohms & 320rms when bridged, should give plenty of power.

[mike.]

Also look at the Vibe slick A3. Thats a good amp for what your planning, as i'm doing similar with mine.

[Jimmy Hat]

Just my 2p - the Fli 900 seems an awesome amp for not a lot pf money if that's what you're after. Sounds fantastic and it's 4x100w rms.

[daemonchild]

Just my 2p - the Fli 900 seems an awesome amp for not a lot pf money if that's what you're after. Sounds fantastic and it's 4x100w rms.

And it looks quite cool too.

[Jimmy Hat]

Sure does if you're not after a subtle look - I'm not so I really like the way it looks.

One other thing you could do is buy a set of 2 ohm components instead of the Vibes and stick with the Mutant amp as you could certainly do worse, for example the excellent Infinity Reference ones or the even better Kappa ones if you can stretch to them. That way your amp would be feeding them 145w rms each, which is more than enough to drive them to their full potential. This seems to be the cheapest place for it http://cgi.ebay.co.u...m#ht_3177wt_908

[pbrain]

I am planning on installing a Mutant Ascension 4 amp to run a set of Vibe SEK 60 components and a Mutant Conquest sub. The specs are as follows:

Mutant Ascension 4

Model - MTASC4
Channels - Four
Power Output - 4 x 85W RMS 4 Ohms Stereo
4 x 140W RMS 2 Ohms Stereo
2 x 280W 4 Ohms Bridged
Pass filter - Yes High and Low Pass Filter
Power Supply - PWM full MOSFET supply
Frequency Response - 10Hz - 40kHz
Power Supply - PWM MOSFET
RCA INPUT / OUTPUT
3 Way Protection Circuitry

Vibe SEK 60

115W RMS / 345W PEAK
50W RMS Minimum Input
90DB Sensitivity
Frequency Response 50hz - 20khz
Impedence 4ohms

Mutant Conquest

RMS Watts - 300W
Max Power Watts - 600W
Frequency Response - 34Hz – 2500Hz
Impedance - Dual 2ohms
Sensitivity - 89dB


My question is will this setup work? I am trying to understand the theory of Ohms but i wasn't sure whether i can run a set of components that have an impedence of 4 ohms and a sub that has an impedence of only 2 ohms of of the same amp. I am planning on bridging two of the cannels to run the sub. Can somebody offer some advice.

personally i would do the following...

1 way of doing your sub - wire 2 channels separately into each coil, so you have would have 2x 140wRMS into 2ohms and put a mono signal into those 2 channels

or you could bridge the output of your amp (280w into 4ohms) and wire your sub in a 'series' connection to take the 2x 2ohms up to 1x 4ohm (take the (+) from one side of the speaker and connect it with decent cable to the (-) of the other side of the speaker) this will leave you to wire the speaker like a single 4ohm sub with a (+) on one side and (-) on the other - this would be my prefered choice of install (less cabling to speaker and less chance of phase problems from amp)

and then put your full range speakers onto the other 2 channels in stereo at 2x 4ohms.

should sound sweet!