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View Full Version : which amp to use with ctx65cs



herrrerrera
12-31-2009, 01:04 PM
Just ordered the ID CTX65CS 6.5" component speakers, help me choose an amp. gracias

Xprime4
12-31-2009, 01:07 PM
Just ordered the ID CTX65CS 6.5" component speakers, help me choose an amp. gracias

i blew a mid with 300 watt per side after a year or so. it still works, but midrange seems pretty ****ed up. give them around 150-200watt, headroom is always usefull

Image Dynamics
12-31-2009, 01:21 PM
150W is a good number. You will have good headroom.

IBmikexxx
12-31-2009, 02:38 PM
I'm in the same position as you. Currently waiting to get them in. I was looking at the Kenwood KAC-7204 just because I have its bigger model pushing my sub, but I'm not too sure on how efficient it is. I read that it is a good amp and just runs a little hot. I'll stay posted on your thread for some answers

modskwod
12-31-2009, 02:42 PM
This one (http://www.woofersetc.com/p6097/TXA3002--Cadence-2-Channel-High-Power-600-Watt-Amplifier.htm)
Great amp for the price, sounds good and puts out rated.

herrrerrera
12-31-2009, 06:36 PM
cool, i know nothing about amps. so if a few more chime in with good things to day about that one, i will buy it..

my friend works at sound warehouse and can hook me up with this amp for $150 http://www.woofersetc.com/p6084/T6002--Rockford-Fosgate-2-Ch-600-Watt-Amplifier.htm

or what do you guy think of these two

http://www.woofersetc.com/p6856/FD-2200--ARC-Audio-2-Channel-370-Watt-Amplifier.htm
http://www.woofersetc.com/p5720/V1502--Phoenix-Gold-Ryval-1000-Watt-2Channel-Amplifier.htm
also what does good headroom mean?

SicAudio
12-31-2009, 06:40 PM
rf is just a name anymore the cadence arc or quart amp will trash it

WannaBBurly
12-31-2009, 10:39 PM
may be about to pick up these comps as well, was going to run them with a RF punch 201s (pretty old, i know) but i have been looking at amps as well, since i don't think 50w rms will be enough for them...

SicAudio
12-31-2009, 10:46 PM
no it wont the 201 is a decent amp as are most old school rf amps but it wont be enough.

pyfocal
01-01-2010, 01:14 PM
You honestly think that 100 x 2 Arc amp (although a very well made amp that makes over it's rated power) or the Cadence are going to trash a T600.2. I would bet on the Rockford in that deal.I know it will do over 200 X 2 at 4ohms-probably closer to 250 and do it all day long.I don't run Rockfords I have Zapco and Sundown but I put Rockfords in my daughters car because she also had a friend that worked at a big box and got them for less than half price warrantied.I was very impressed with them-much more so than I thought I would be going in.They seem to be holding up very well and she pretty much cranks it when she gets in the car and leaves it that way till she shuts it off.You should jump on that Rockford for that price.;)

loud-n-low
01-01-2010, 01:18 PM
i ran a Sundown sax125.2 to my ctx65,worked fine. I would prefer the arc audio 300.2 in this case

Hoodlum007
01-01-2010, 04:47 PM
That Arc seems to be really nice deal, Arc and Zapco are both high end sq amps.

100x2 Arc at that price you really can not go wrong.

02xblazer
01-01-2010, 05:18 PM
im going to be powering mine with a sundown 50.4.. bridged its rated at 160.2

herrrerrera
01-01-2010, 05:34 PM
k so this one then?
http://www.woofersetc.com/p6856/FD-2200--ARC-Audio-2-Channel-370-Watt-Amplifier.htm

again i dont know much. when they say the amp will put out 100rms. is that when the volume is up pretty high? or the gain? or does it always run 100rms to the speakers? Will the ctx65cs handle 100rms watts ok? i'm not to interested in blowing speakers/amps..

eggyhustles
01-01-2010, 07:56 PM
http://www.woofersetc.com/p6838/DSC480--MB-Quart-4-Ch-640-Watt-Amplifier.htm

herrrerrera
01-01-2010, 11:29 PM
http://www.woofersetc.com/p6838/DSC480--MB-Quart-4-Ch-640-Watt-Amplifier.htm

i need a 2 channel amp that will do anywhere from 100-200rms@4ohms.
not interested in bridging

SicAudio
01-01-2010, 11:34 PM
http://www.woofersetc.com/p6840/DSC2150-MB-Quart-2-Ch-600-Watt-Amplifier.htm

i can do that same amp for 150 shipped dealer full 1 yr warranty factory direct ;)

herrrerrera
01-02-2010, 03:16 AM
pm me your paypal add. :)

Johnny Law.Lulz
01-02-2010, 03:17 AM
Sic is a good guy = )

ciaonzo
01-02-2010, 03:17 AM
herrrrrrrreeeeeeerrrrrrreeeeeeerrrrrrreeeeeerra

Johnny Law.Lulz
01-02-2010, 03:18 AM
lulz.

SicAudio
01-02-2010, 03:22 AM
Sic is a good guy = )

thank you :D

Maglite
01-02-2010, 06:31 AM
http://www.woofersetc.com/p6840/DSC2150-MB-Quart-2-Ch-600-Watt-Amplifier.htm

i can do that same amp for 150 shipped dealer full 1 yr warranty factory direct ;)


Not a bad deal. :)

eggyhustles
01-02-2010, 06:32 PM
i need a 2 channel amp that will do anywhere from 100-200rms@4ohms.
not interested in bridging

Bridge

Hoodlum007
01-03-2010, 03:43 PM
The Arc will out perform those discuss MB amps across the board. ARC and Zapco are known to be super clean and quality built amps.

WannaBBurly
01-07-2010, 09:31 PM
so are Arc and Zapco the consensus answers? what about more affordable options? sorry to bring this back up, just still looking for more opinions...

birdmanpresents
01-07-2010, 10:26 PM
Audison SRX 4

http://www.woofersetc.com/p4282/SRX-4--Audison-4-Ch-340-Watt-Amplifier.htm

Bridged will give 175W to each side at 4ohm.

mellephants
01-13-2010, 10:16 PM
holy @#$!@# that MB Quart is awesome. $140 for 320x2 @ 4ohm

mellephants
01-13-2010, 10:17 PM
OP, what did you wind up doing?

mellephants
01-13-2010, 10:31 PM
JL 300/2 and Sundown SAX-125.2 should also be in this mix

WannaBBurly
01-14-2010, 12:07 PM
any detriment to bridging these 4 channel amps to run 2 channels? seems to be a lot more power available for less cost when compared to 2 channel amps (mainly looking at the MB -Discus amps). are these amps any good?

Sir-Lancelot
01-14-2010, 12:17 PM
any detriment to bridging these 4 channel amps to run 2 channels? seems to be a lot more power available for less cost when compared to 2 channel amps (mainly looking at the MB -Discus amps). are these amps any good?

No. Gives you more overhead for musical peaks.
Just set your gains correctly. I prefer 4 channel amps, more flexibility and value, IMO.

mellephants
01-14-2010, 12:38 PM
any detriment to bridging these 4 channel amps to run 2 channels? seems to be a lot more power available for less cost when compared to 2 channel amps (mainly looking at the MB -Discus amps). are these amps any good?

Curious. I see what you mean (data pulled from woofersetc):

DSC450 (http://www.woofersetc.com/p6839/DSC450--MB-Quart-4-Ch-400-Watt-Amplifier.htm)
Retail: $344.99
Price: $100.99
50x4 @ 4ohm
100x4 @ 2ohm
200x2 @ 4ohm

DSC480 (http://www.woofersetc.com/p6838/DSC480--MB-Quart-4-Ch-640-Watt-Amplifier.htm")
Retail: $444.99
Price: $139.99
80x4 @ 4ohm
160x4 @ 2ohm
320x2 @ 4ohm

DSC2150 (http://www.woofersetc.com/p6840/DSC2150-MB-Quart-2-Ch-600-Watt-Amplifier.htm")
Retail: $449.99
Price: $209.99
150x2 @ 4ohm
300x2 @ 2ohm

NAU-460 (http://www.woofersetc.com/p7610/NAU-460--MB-Quart-4-Ch-360-Watt-Marine-Amplifier.htm") (Marine Grade)
Retail: $349.99
Price: $129.99
60x4 @ 4ohm
90x4 @ 2ohm
180x2 @ 4ohm

If you were limiting your choices to only MB Quart amps, it looks like the only reason to go with the 2-channel version is if you have 2ohm drivers that need more than 160w. The only reason for this pricing must be that people are afraid of bridging, or maybe everyone is willing to pay more for the 2-channel because the install will look more elegant?

EDIT: Maybe this is just a fluke with woofersetc pricing. The DSC2150 is $115 shipped all over ebay (http://shop.ebay.com/i.html?_nkw=DSC2150).

WannaBBurly
01-14-2010, 05:38 PM
i'm not stuck on the MB discus amps or any other amp for that matter, just happened to be looking at them at the time... i'll have to keep looking around to see if this "4 channel bridged > 2 channel" stuff happens elsewhere.

mellephants
01-14-2010, 06:11 PM
MB Quart DSC-4125 is only about $150 shipped

125x4 @ 4ohm
250x4 @ 2ohm
500x2 @ 4ohm
0.05% THD

herrrerrera
01-15-2010, 06:40 PM
OP, what did you wind up doing?

Got the Discuss from SicAudio, http://www.woofersetc.com/p6840/DSC2150-MB-Quart-2-Ch-600-Watt-Amplifier.htm i have no other amps/speakers to compare with, but i am 110% super sadisfied with how they sound. crystal clear!
what determines how much watts im sending to the speakers? is it just in the volume? or is the amp always sending a certain amount of wattage to the speakers? or do all the settings have to bel all the way up plus volume??
i turned all the setting 1/5th- 1/4th the way up. and if i turn volume up, i believe i would go deaf before they start to distort, the mids and tweets are ear peircing!

herrrerrera
01-15-2010, 06:48 PM
Its funny ive had subs for 8 years, i first started out wanting something that just thumped.. i had one 18" then 2 year later i had two 12"audio bahns. then i wanted a shorter crisper bass. so i got two 10" Alpine type-R in a small .68 closed box.
and now i still want tighter crisper bass. so i think i might sell the two 10"s and get four 8"s

mellephants
01-15-2010, 08:13 PM
yep, that's how it goes :)

papermaker
01-16-2010, 02:56 AM
herrrerrera
its not the woofers size.. you like over damped alignments and woofers.. find something with a high fs and low Qt.. right off hand im sure you would like CDTs drivers as well as DD drivers(ported).. ive had 4 channel amps bridged and 2 channels 4ohm stereo and i find the 2 channel option is worth the extra doe. the SD i have does a clean 120x4@4ohm... you could also look into the arc audio FD http://www.woofersetc.com/p6856/FD-2200--ARC-Audio-2-Channel-370-Watt-Amplifier.htm for the money there great...

http://www.woofersetc.com/p8423/QES1220-Orange--CDT-Audio-12"-Cast-Audiophile-Excursion-Subwoofer.htm
http://www.woofersetc.com/p6718/QES1220--CDT-Audio-12"-Cast-Audiophile-Excursion-Subwoofer.htm

spracer03
01-18-2010, 11:25 PM
Waiting on my comp set in the mail, but i just picked up a kenwood kac-7204 to power them... anyone use this amp with these comps??... rated at 170x2 @ 4 ohms i figure it should be a good match

mellephants
01-19-2010, 02:04 AM
definitely, that amp will have plenty of power! I don't know anything else about it, like signal to noise ratio or THD, but 170x2 is plenty.

I have a set of ctx65cs on the way as well. i am gonna run them off an old phoenix gold that does 50x4@4, 75x4@2, bridged to 150x2@4. the amp itself is in rough shape, and pretty **** big, so I've been looking for something a bit nicer and smaller.

obtw I just scored a jbl bp1200.1 from these forums for $150 shipped. I'm using it with an an idq12v3d4. it sounds, uhh, "omg awesome". I can't wait for the components to come..

spracer03
01-19-2010, 03:08 AM
definitely, that amp will have plenty of power! I don't know anything else about it, like signal to noise ratio or THD, but 170x2 is plenty.

I have a set of ctx65cs on the way as well. i am gonna run them off an old phoenix gold that does 75x4@4, bridged to 150x2@4. the amp itself is in rough shape, and pretty **** big, so I've been looking for something a bit nicer and smaller.

obtw I just scored a jbl bp1200.1 from these forums for $150 shipped. I'm using it with an an idq12v3d4. it sounds, uhh, "omg awesome". I can't wait for the components to come..

Signal-to-Noise Ratio 83 dB
THD at Rated RMS Power 0.8%

mellephants
01-19-2010, 11:38 AM
that is ok, but certainly not the best. my PG amp has a 110dB S/N and 1% THD, so its better at one thing and worse at the other.

You should be able to hear the difference from 80dB to 100dB, but S/N ratios over 100dB will be very hard to discriminate.

Anything under 1% THD is generally accepted as "decent"; fwiw the MB Quart DSC2150 is rated 0.05% THD & 92dB S/N

From wikipedia:

Signal-to-noise ratio (often abbreviated SNR or S/N) is ameasurement of the ratio of a signal power to the noise power corrupting the signal. A ratio higher than 1:1 indicates more signal than noise. In less technical terms, signal-to-noise ratio compares the level of a desired signal (such as music) to the level of background noise. The higher the ratio, the less obtrusive the background noise is.

The total harmonic distortion, or THD, of a signal is a measurement of the harmonic distortion present and is defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency. Lesser THD allows the components in a loudspeaker, amplifier or microphone or other equipment to produce a more accurate reproduction by reducing harmonics added by electronics and audio media.

manny1337
01-19-2010, 02:27 PM
Waiting on my comp set in the mail, but i just picked up a kenwood kac-7204 to power them... anyone use this amp with these comps??... rated at 170x2 @ 4 ohms i figure it should be a good match

you shouldnt of bought a kenwood amp :)


they are horrible. ive owned one will never buy another in my life.

spracer03
01-20-2010, 10:23 PM
i guess ill have to see how my ears like it... im not too picky so it might be ok

mellephants
01-20-2010, 10:29 PM
If you are able to return it, there are better amps for the money, but if you don't want to mess with it, just try it out. You might be just fine with it.

spracer03
01-24-2010, 03:27 AM
what else would you recomend for less than $150?

mellephants
01-24-2010, 04:05 AM
one of the MB Quart DSC amps

ebay links:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=300387430646
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290392360346
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=200419008613

use microsoft/bing/live cashback to get 8% off of those prices too

Maglite
01-24-2010, 11:34 PM
or Cadence