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Amp for 15" type r’s?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=89346
Printed Date: August 18, 2022 at 5:32 AM


Topic: Amp for 15" type r’s?

Posted By: rboutin2
Subject: Amp for 15" type r’s?
Date Posted: January 22, 2007 at 2:58 AM

I was wondering if someone could help me find an amp for two 15" Alpine type R dual 4 ohm subs. i am looking for a single amp, I do not want dual amps anymore, and I am also hoping it will be something that won't break the bank either. My budget is around $400 to $600. I might be able to go slightly higher if necessary. The subs handle 750 RMS each, so the amp needs to push out at least 1500 watts RMS at 1 or 4 ohm stable. Thanks in advance for the help!

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Disturbin' Tha Peace



Replies:

Posted By: aznboi3644
Date Posted: January 24, 2007 at 4:38 PM
Sundown Audio SAZ-1500




Posted By: bmwpwner
Date Posted: January 25, 2007 at 12:25 AM
you could go with the Kenwood KAC-9102D. it is a mono block amplifier that is rated at something like 1800 max and you could try running the woofers in 8 ohms each or 4 ohms each. this amp is 2 ohm stable so if you do each sub as a 4 ohm then you can maximize the amp and the subs. i really don't care for Kenwood as a whole but they make some really good amps. i also like the KAC-7202 or KAC-7252 (with the bass knob) but you will be limited to less power but you can manipulate the impedance a little more because it is a 2 channel amp that you can bridge and drop the ohm load. if you running 2 woofer and need more power i would probably go with the mono amp. good luck and hope this helps. btw, 9102D runs about $300 and the 7202 runs about $200. great time to buy since everyone is running sales to blow out the 2006 models for the same product with different model numbers (and higher price) of the 2007 model. good luck and hope this helps.

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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: bmwpwner
Date Posted: January 25, 2007 at 12:29 AM
btw, don't scrimp on the amp kit. get a true 4 AWG kit for it or else. trust me... good luck.

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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: aznboi3644
Date Posted: January 26, 2007 at 12:17 AM
He has dual 4 ohm subs...so something that is 1 ohm stable...the 9102D is a good amp..but only good enough for one Type R.

He asked for something that will push around 1500 watts...the 9102D will push nowhere near that...that 1800 watt number is only a PEAK number...which means pretty much nothing.




Posted By: bmwpwner
Date Posted: January 26, 2007 at 6:33 PM
yea, if the subs are 4 ohm duals each then the 9102d is perfect for it. run each woofer in 4 ohm and mono them into the single channel on the mono amp. that will give a 2 ohm load at the amp and then tune the gain to the subs. i do agree that the max output on that amp is 1800 watts but it is also rated under the CEA so even though those numbers don't mean anything that amp will run those woofers all day long with no problems. of course it would be better to run one amp per woofer. if that is possible then get KAC-7252 or KAC-7202 (identical except for the remote bass knob) which are both 2 channel bridgeable amps. good luck and hope this helps.

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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: customsuburb
Date Posted: January 27, 2007 at 6:36 PM
The Rockford Fosgate T1001bd mono amp is the amp with the highest power rating that fits your price range, that I could find on the internet doing a quick search. You could pick up a Boss amp for $300 that is rated for 2000 watts at 1 ohm, but the quality isn't any where near what the Rockford or similar big brand amp would have (you get what you pay for).

If you live near any local shops, you should go out and look at what they have too. If you go in and spend some time talking with some sales people they could probably get you a pretty good price on an amp.




Posted By: aznboi3644
Date Posted: January 27, 2007 at 8:18 PM
bmwpwner wrote:

yea, if the subs are 4 ohm duals each then the 9102d is perfect for it. run each woofer in 4 ohm and mono them into the single channel on the mono amp. that will give a 2 ohm load at the amp and then tune the gain to the subs. i do agree that the max output on that amp is 1800 watts but it is also rated under the CEA so even though those numbers don't mean anything that amp will run those woofers all day long with no problems. of course it would be better to run one amp per woofer. if that is possible then get KAC-7252 or KAC-7202 (identical except for the remote bass knob) which are both 2 channel bridgeable amps. good luck and hope this helps.


The KAC7252 is NOTHING like the KAC-9152D sir...the 9152D or the 9102D will only give each sub 450 watts rms while the 7252 will only give each sub 250 watts rms...which is nothing where the original poster is asking for. One 7252 or 7202 is only good enough to hardly push one sub




Posted By: bmwpwner
Date Posted: January 27, 2007 at 8:45 PM
actually i have been running the kenwood amps (both mono and 2 channel) on multiple subs for years. i was saying that he could use 1 7202 on each sub or the 9102 on both. i am pretty sure that the 9102d will be enough to run those woofers but everyone is entitled to their opinion. i work with kenwood, fosgate, apline everyday and of course i have certain beliefs based on what i have seen for performance vs. price. anyway, good luck and hope this helps.

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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: cloak559
Date Posted: January 28, 2007 at 12:23 AM
'bmwpwner', please stop posting uneducated advise...

First off, the only Kenwood mono amps that could run those subs are the KAC-9152d or the KAC-X812d. Being that they are both 1ohm stable. But, they still do not have enough power output to push those subs. They are CEA Compliant, but they are also rated around 900rms. That 1800w peak number is not a CEA compliant number. It is a marketing scheme to lure in uneducated buyers...

Secondly, two dual 4ohm subs cannot be wired to show the amp a 2ohm load. The only two possible impedance numbers you can get from two dual 4ohm drivers, would be 4ohms, or 1ohm. So in that light, 'roboutin2' will need to find either a powerful 2-Channel or a 1ohm stable mono block...

As aznboi stated before, the Sundown SAZ-1500 would be a perfect choice for your application, and they will run you about $450-$600...If you're looking for something a bit cheaper, I would check out maybe a Hifonics BXi-1606d. They usually run around $250-$300...

And 'bmwpwner', where exactly is it that you work, Best Buy im guessing? Just because you sell a product or work with it does not automatically make you an expert(obviously)...95% of what you have stated is completely wrong...But thankyou for the laugh, your signature is about the most ironic thing I have read all week...

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'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz

Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...




Posted By: aznboi3644
Date Posted: January 28, 2007 at 1:42 AM
"It is best to keep your mouth shut and be presumed ignorant than to open it and remove all doubt."
-Mark Twain-

yes...I was guessing that you work at Best Buy...Cloak damnit it took someone long enough!!! lol

bwmpwner sorry but I was getting tired of arguing with you about your bad suggestions...peak numbers don't mean squat. I've been to a few Best Buys and the sales people there really don't know crap about what they are talking about...all they do is read the labels, I can do that. I asked a sales guy that I needed an amp that put out 400 watts at a 4 ohm load...he told me a Rockford P2002 would do perfectly...thats 200 watts at 4 ohms.

But do like your sig says...know what you are saying before posting




Posted By: bmwpwner
Date Posted: January 28, 2007 at 11:23 AM
wow, i didn't realize that we were gonna start attacking each other for experience information. yes i do work for best buy and i am very experienced but i'm always willing to learn from others. anyway, apparently the work that i have done with kenwood amps over the last 6 or 7 years has all been wrong. sorry about all the bad info i have posted then. and btw, i'm not a salesperson i'm an installer. sorry and good luck getting boned in the stores then.

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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: cloak559
Date Posted: January 28, 2007 at 2:03 PM
We're not attacking you, we are simply bringing to your attention that most of what you are stating are false facts...And to be totally honest, im worried. You've been installing for 6-7 years and you still cant get the ohm loads right?...

-------------
'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz

Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...




Posted By: aznboi3644
Date Posted: January 28, 2007 at 4:38 PM
bwm...we weren't attacking.

The orignal poster of this thread asked for a specific power range...you kept insisting on amps that were no where near that range and kept trying to defend a moot point




Posted By: kicker guy
Date Posted: January 28, 2007 at 4:50 PM
I would go with a Kicker KX1200.1 its 1200 watts @ 1 ohm.... but the 2 I have are rated higher than that... and my local shop has um on sale for $385 :)




Posted By: aznboi3644
Date Posted: January 28, 2007 at 5:06 PM
bmwpwner wrote:

yea, if the subs are 4 ohm duals each then the 9102d is perfect for it. run each woofer in 4 ohm and mono them into the single channel on the mono amp. that will give a 2 ohm load at the amp and then tune the gain to the subs. i do agree that the max output on that amp is 1800 watts but it is also rated under the CEA so even though those numbers don't mean anything that amp will run those woofers all day long with no problems. of course it would be better to run one amp per woofer. if that is possible then get KAC-7252 or KAC-7202 (identical except for the remote bass knob) which are both 2 channel bridgeable amps. good luck and hope this helps.


If you have been installing for 6-7 years you should know that the 9102D/9152D amps are NOWHERE NEAR THE SAME as the 7202/7252 amps.




Posted By: bmwpwner
Date Posted: January 28, 2007 at 8:32 PM

actually i've been installing for over 10 years now and dealing with kenwood amps for 6-7 years. cloak you stated that there isn't a way to get those woofers into a 2 ohm load. why can't you run each woofer with one coil (which is a 4 ohm load) and then mono those into the amp. if you are using a mono amp that will not half the load. i'm not gonna argue with you guys on this but i can tell you that a 9102d will run both of those woofers with no problem. i'm probably alot older than you guys and i try to discuss on these forums rather than just being a dick.

btw, i didn't say that the 7202 and 9102d are the same amp but rather the 7252 and the 7202 are the same except the bass knob. i understand sometimes things are read wrong. i was saying that if you wanted to run 2 amps run a pair of 2 7202 amps (one on each sub with one coil from each woofer). i was merely suggesting an amplifier that i have had extensive experience and success with for the application.

another good quote is "Winning an arguement on the internet is like coming in 1st in the special olympics." and that is not buy Mr. Twain.



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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: cloak559
Date Posted: January 29, 2007 at 2:48 AM
OMG will someone please get rid of this guy!!!....Did you honestly just state that you have been installing for 10 years, and then directly following that, state that he should run one coil on a DVC Sub!!...Running only one coil cuts the power handling in half, which also cuts the woofers perfomance and output ability in half...

Kid, you dont know what you are talking about. This forum is full of HIGHLY educated car audio enthusiast and 12 Volt experts. listen to them and take in thier knowledge. I, for one, am calling bull**** on your skills man. If you have been installing for 10 years you should know quite a bit more than you do...

Please god someone lock this thread...


-------------
'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz

Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...




Posted By: bmwpwner
Date Posted: January 29, 2007 at 10:11 AM
so cloak i haven't seen you say what shop you work for. i'm sure you are an installer with years of experience and tons of vehicles that you installed into right!?! anyway, there is a huge post on running one voice coil that is on the main page on this forum discussing it. you are right there are alot of intelligent and experienced installers on here and many of them posted on that topic. this is my last post to this topic because i deal with enough ignorant customers everyday and i don't need anyone like you that won't discuss rather than attack. again i would love to know what shop you work for because you sound like you are (ironically since you hate sales people that just read the box) a box reader. good luck and hope this helps you.

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"I cannot teach anybody anything, I can only make them think."
-Socrates-




Posted By: cloak559
Date Posted: January 29, 2007 at 12:33 PM
cloak559 wrote:

Did you honestly just state that you have been installing for 10 years, and then directly following that, state that he should run one coil on a DVC Sub!!...Running only one coil cuts the power handling in half, which also cuts the woofers perfomance and output ability in half...


If you in fact read that Sticky on running one voice coil, you would know that what I just said was 100% correct...

Moreover, once again we are not attacking you, we are putting you in your place. This is one of the top forums around for get the correct advise or the perfect answer to your questions. And you were giving bad advise and stating false facts, which is why we had to jump in and let you know that you are not correct...

As for the shop I work at, you can ask anyone on here about the reputation of Superior Sound....

-------------
'89 Mercedes-Benz 300E
Pioneer DEH-5900UB
(2)RE Audio SX 10"s
(1)US Amps MD3D
3ft^3 @ 37Hz

Blowing up in a car accident doesnt worry me, as long as I'm putting out some major dB's when I die...




Posted By: haemphyst
Date Posted: January 29, 2007 at 1:17 PM
cloak559 wrote:

cloak559 wrote:

Did you honestly just state that you have been installing for 10 years, and then directly following that, state that he should run one coil on a DVC Sub!!...Running only one coil cuts the power handling in half, which also cuts the woofers perfomance and output ability in half...


If you in fact read that Sticky on running one voice coil, you would know that what I just said was 100% correct...

Moreover, once again we are not attacking you, we are putting you in your place. This is one of the top forums around for get the correct advise or the perfect answer to your questions. And you were giving bad advise and stating false facts, which is why we had to jump in and let you know that you are not correct...

As for the shop I work at, you can ask anyone on here about the reputation of Superior Sound....

Whether he is right about the capabilities of Kenwood amps or not, (I personally think they are garbage, and would never recommend one to even my worst enemy, but that is not the issue here...) please, everybody chill. It is PERFECTLY ACCEPTABLE to run one voice coil on a dual voice coil woofer. It has been discussed ad nauseum right here, in this very forum. Please read it. You will find that running only one voice coil does NOT reduce the power handling by 50%, but only by approximately 10-15% (although, I personally de-rate about 20%). These numbers are per Dan Wiggins of Adire Audio.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."




Posted By: a568272
Date Posted: January 29, 2007 at 5:45 PM

Ok, let's all calm down.  Deep breath...good.  'pwner wasn't saying "the 9102D is the best, most powerful amp of all time!  Verily, it was built by God Himself and placed into the hands of men!", he was only saying that it would push those subs fine without breaking the bank. 

He also  never said that the 9102 and the 7202 were comparable, he said "either one of these or two of these," just offering up an opinion.  Instead of taking said opinion and going "Kenwood? Nah.", you told him he couldn't install.  Have you ever seen his work?  No?  Hmm.

As far as the single coil on a DVC, that horse is starting to stink.  Its fine to run one coil, but its not the best way to maximize your setup.

In the immortal words of the Human Torch: "Flame on!"





Posted By: aznboi3644
Date Posted: January 29, 2007 at 6:34 PM
I apologize...I thought he meant the 9102 and the 7202 were the same...but I do like the fantastic four...used to watch the old cartoons and read the magazines lol




Posted By: a568272
Date Posted: January 29, 2007 at 7:21 PM
Lol so did I.  But I was more into Spiderman.  Ahh, the easy days of the late 80's...

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I wanna move to New Hampshire.





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