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Old 14th October 2010, 07:48   #1
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Default Urgent Help in Choosing a 4 Ch Amp

Guys, i need to order this by friday,

What do you recommend to power a pair of Midrange + Tweeters

I need about 60-90 rms of power for each channel

The options are
  • JL Audio 300/2 V2 (75 x 4 rms @ 4 ohms)
  • DLS RA40 (75 x 4 rms @ 4 ohms)
  • Image Dynamics Q 450.4 (75 x 4 rms @ 4 ohms)


Please help me choose a one among the above three

Thanks in advance
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Old 14th October 2010, 08:08   #2
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Mi10. i think you can try these.

Steg America - Products

Very good amps and very good power.

You can even try the DLS RA40. Very good sq amp.

I think you already have a Kenwood 4 channel that gives out excellent power. correct?? Then why go for another 4 channel????

Last edited by Pr_007 : 14th October 2010 at 08:09.
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Old 14th October 2010, 08:14   #3
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Quote:
Originally Posted by Pr_007 View Post
Mi10. i think you can try these.

Steg America - Products

Very good amps and very good power.

You can even try the DLS RA40. Very good sq amp.

I think you already have a Kenwood 4 channel that gives out excellent power. correct?? Then why go for another 4 channel????
I dont think Steg K series is available now. It is discontinued i was what i heard.

for the second part of the question
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Old 14th October 2010, 08:16   #4
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If you want some Good amp with excellent musical output and at a very very competitive price you can try the Focal Solid 4. Very good and VFM product. Gives out 75x4 at 4 ohms.

You can even go for the alpine PDX-F4, gives out 100 x 4 at both 4 and 2 ohms.

Since you already have a mono from alpine it will be a great match.

But I do not know much of it's tuning options, you can do a research.

Last edited by Pr_007 : 14th October 2010 at 08:27.
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Old 14th October 2010, 08:25   #5
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Quote:
Originally Posted by Mi10 View Post
Guys, i need to order this by friday,

What do you recommend to power a pair of Midrange + Tweeters

I need about 60-90 rms of power for each channel

The options are
  • JL Audio 300/2 V2 (75 x 4 rms @ 4 ohms)
  • DLS RA40 (75 x 4 rms @ 4 ohms)
  • Image Dynamics Q 450.4 (75 x 4 rms @ 4 ohms)
Please help me choose a one among the above three

Thanks in advance
Out of the above lot my vote would go for the Image Dynamics Q 450.4. Remember "Got balls ?"
Alternatively you can also look at the Clarion APX4361 (a Robert Zeff design) if you have budget constraints (Budget constraints for Mi10, What was I smoking )

Last edited by donarun : 14th October 2010 at 08:35.
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Old 14th October 2010, 08:41   #6
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If you are looking at the Clarion as donarun suggested.

Here is the link for the same from Amazon.

Amazon.com: Clarion APX4361 4/3/2 Channel 640 Watts Maximum Amplifier: Electronics

It costs just 199$.

Last edited by Pr_007 : 14th October 2010 at 08:46.
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Old 14th October 2010, 08:49   #7
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Quote:
Originally Posted by Pr_007 View Post
If you want some Good amp with excellent musical output and at a very very competitive price you can try the Focal Solid 4. Very good and VFM product. Gives out 75x4 at 4 ohms.

You can even go for the alpine PDX-F4, gives out 100 x 4 at both 4 and 2 ohms.

Since you already have a mono from alpine it will be a great match.

But I do not know much of it's tuning options, you can do a research.
Solid 4 is out as its only as good as my RF400-2 with respect to SNR and THD values.

Alpine PDX F4 is a class D, i understand it is still few of the better class D stereo amps around, still want a nice class AB with high SNR and low THD

Quote:
Originally Posted by donarun View Post
Out of the above lot my vote would go for the Image Dynamics Q 450.4. Remember "Got balls ?"
Alternatively you can also look at the Clarion APX4361 (a Robert Zeff design) if you have budget constraints (Budget constraints for Mi10, What was I smoking )
I am sorry Arun, So whats good about the Q450.4 ?

Robert Zeff Design in a clarion ?

I thought they had a Arc Audio SE series done by him right ?

Quote:
Originally Posted by Pr_007 View Post
If you are looking at the Clarion as donarun suggested.

Here is the link for the same from Amazon.

Amazon.com: Clarion APX4361 4/3/2 Channel 640 Watts Maximum Amplifier: Electronics

It costs just 199$. If you get this amp, however good this amp is and even it gives out the best SQ, this will be the cheapest ICE component in your car.
Lol, Cheapest equipment will be my Amp Kit
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Old 14th October 2010, 08:59   #8
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Quote:
Originally Posted by Mi10 View Post
I am sorry Arun, So whats good about the Q450.4 ?

Robert Zeff Design in a clarion ?

I thought they had a Arc Audio SE series done by him right ?
I think the Q450.4 puts out more power than in the spec sheet. There is a thread on the forum by Hellspawn, check it out for a brief review of the product.

The Arc Audio KS series amp internals and Clarion APX series are very similar, in a way you can say that the Clarion was a predecessor for the KS series amps. Both KS and SE series amps were designed by Zeff.

Last edited by donarun : 14th October 2010 at 09:05.
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Old 14th October 2010, 09:13   #9
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Quote:
Originally Posted by donarun View Post
I think the Q450.4 puts out more power than in the spec sheet. There is a thread on the forum by Hellspawn, check it out for a brief review of the product.

The Arc Audio KS series amp internals and Clarion APX series are very similar, in a way you can say that the Clarion was a predecessor for the KS series amps. Both KS and SE series amps were designed by Zeff.
Yup just read the review,

But I dont need too much power for the Midrange + Tweeter Combo.

His review doesnt cover the SQ part exhaustively

Real fix now
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Old 14th October 2010, 10:03   #10
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@Mi10
Out of the options you mentioned in the first thread. I'd choose the RA40. Tried and tested product and I've read about a lot of DLS/Genesis + Morel combo.

If you are going to run the mid-range/tweeter close to each other, then a 2 channel amp is another option. Look for Genesis Series III amps for powering the mid-range/tweeters.
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Old 14th October 2010, 20:07   #11
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Originally Posted by thelord View Post
... If you are going to run the mid-range/tweeter close to each other, then a 2 channel amp is another option. ...
Errr... Did not understand this one! How is the distance of the mid-range to the tweeter linked to the number of channels of amp?
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Old 14th October 2010, 21:06   #12
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Errr... Did not understand this one! How is the distance of the mid-range to the tweeter linked to the number of channels of amp?
What he means is that if i can use a passive Xover between the Mids and the Tweets, then a 2 Ch is enough.

However, TA will go for a toss if the drivers are placed too far. Hence its better to place them, as close as possible
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Old 14th October 2010, 22:37   #13
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Quote:
Originally Posted by Mi10 View Post
What he means is that if i can use a passive Xover between the Mids and the Tweets, then a 2 Ch is enough.

However, TA will go for a toss if the drivers are placed too far. Hence its better to place them, as close as possible
Since you are gonna use Morel drivers I suggest you look for amp which could put out more power. Morel loves power and having more head room is always better.
If it's a MT23 tweeter, it's a 6 ohm tweeter which means you using an amp putting 75rms each ch. the tweeter will get about 50-60RMS only. These tweets are rated at 130RMS I would look for an amp that would atleast putout 100Rms at 6 ohms.
Also, keep in mind the tweeter are 2db more sensitive than the midrange, in order to have the right balance I would suggest look for an amp that atleast puts out 100x4 since the mid and tweeter are gonna be playing major part of the music give them the best.
If you plan to use a passive xover look for atleast 125RMS or 150RMS should be good.

How much are willing to spare on the amp ?

Last edited by Invinsible : 14th October 2010 at 22:53.
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Old 14th October 2010, 23:10   #14
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Quote:
Originally Posted by donarun View Post
Alternatively you can also look at the Clarion APX4361 (a Robert Zeff design) if you have budget constraints (Budget constraints for Mi10, What was I smoking )
Robert Zeff designed only the DPX series amp which are now discontinued but are similar to Arc Audio KS series.

Mi10@ you could look at Arc KS300.4 they are bit underrated too.
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Old 14th October 2010, 23:50   #15
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Quote:
Originally Posted by Mi10 View Post
What he means is that if i can use a passive Xover between the Mids and the Tweets, then a 2 Ch is enough.

However, TA will go for a toss if the drivers are placed too far. Hence its better to place them, as close as possible
Yep, exactly what I meant! Thanks!

I have a quick question though. The Eclipse 7200 MKII has 3 preouts. One I assume you'll be using for the sub. The 2nd will go to the Morel mid-basses. How do you plan to run a 4 channel amp on just the 3rd pre-out? I mean yes, splitting the signal is one option, and some amps support pre-in/pre-out but I guess that's not what you are looking for right?

Just curious as your setup is quite close to what I'd invest in if I have the moolah
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