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elballz12
12-08-2011, 02:46 PM
Trying to decide which component speakers to get. The Alpine SPR-60C rated at 110 rms per speaker or the Infinity Kappa 60.9cs rated at 90 rms per speaker. They will hooked up to a four channel amp along with some Alpine SPR-60 or Infinity Kappa 652.9i The reason i have decided between these cause I have listen to both at my local shop and they were the only two i liked. Just wanting your input

keep_hope_alive
12-08-2011, 07:12 PM
I like Type-R much more than Kappa. my $0.02

Alpine sources Tymphany to build their speakers. I like Tymphany products in general. Good quality control and manufacturing methods result in consistent products.

zako
12-08-2011, 09:48 PM
I like that Alpines are easily bi-ampable. This means if you want to try quasi-active setup with them, you don't need an active crossover.

elballz12
12-09-2011, 12:32 AM
Thanks for the input any suggestions on an amp?

keep_hope_alive
12-09-2011, 01:29 AM
if you can spend $200, look at Alpine, Powerbass, or Rockford. Or look at our classifieds section for a good deal on an even better amp.

VWBobby
12-09-2011, 10:36 AM
I also like the sound and looks of the Alpines over the Kappa's. They sound more clean and flat to me, more low end. Kappas are too harsh and too much midrange 'squak'.

Alpine, JL, Rockford, ArcAudio, MB Quart, are all putting out pretty good amps.

elballz12
12-09-2011, 11:51 AM
Will it make it sound cleaner if i get an alpine amp?

VWBobby
12-10-2011, 02:03 AM
Alpine does make some really clean amps. I recently demo'd their PDX line of amps and was very impressed. JL Audio also makes an HD series of amps that I actually like slightly more. Both models are pretty expensive.
Check sonicelectronix.com and woofersetc.com for prices.

keep_hope_alive
12-10-2011, 09:59 AM
even the standard Class AB Alpine amps (around $200 MAP) are decent and sound good. they are simple, but worth the money.

elballz12
12-11-2011, 02:04 PM
Okay about how much power will i need? Not sure if i should bridge it or ohms kinda confused...

Wattser93
12-11-2011, 03:08 PM
100-150RMS should be good. Can either be attained through bridging a 4 channel or by getting a powerful 2 channel.

Kicker DX200.4 (08DX200.4) 4-Channel Car Amplifier (http://www.sonicelectronix.com/item_21906_Kicker-DX200.4-08DX200.4.html)

They have a picture of a birth sheet in the product description showing 248RMS, so that's about 125RMS bridged x 2 channels.

elballz12
12-11-2011, 03:12 PM
Is it true that when you bridge it it dies faster cause it makes the amp work harder?

NoLoud4U
12-11-2011, 03:15 PM
no

keep_hope_alive
12-11-2011, 04:55 PM
you can bridge an amp for it's entire life and have no issues. bridging is a similar electrical load as running 2 ohm stereo. both are fine for the amp.

i usually recommend bridging a 4 channel amp to front speakers. that way you can buy an affordable 50Wx4 amp and bridge for 200Wx2. granted, you'll never want to use the full 200W, but that is good - so you have plenty of headroom and lower distortion.

zako
12-11-2011, 08:47 PM
I personally don't like bridging all 4 channels on a 4-channel amplifier. Bridged runs considerably hotter, unless you have an amplifier with large heat sink and/or forced cooling. Since efficiency drops, not only the amp runs hotter, but the draw of the electric current increases. My personal preference among the 4-channels is with the newer generation of Class D amplifiers, such as Kenwood Excelon, PPI Phantom, and Alpine PDX. Sure, they're more expensive, but you get honest +100watts into 4ohm loads, very compact case, and decent efficiency (+80%).

However, if you need only two high powered channels, might as well look into 2-channel amps. Parts express sells a 2-channel amplifier rated for 2x150watts for only $99.

Aura RPM2300 RPM Stage 2 Mobile Amplifier 2x150W 269-189 (http://www.parts-express.com/pe/showdetl.cfm?Partnumber=269-189)

This offer will not last long I am sure..

keep_hope_alive
12-12-2011, 12:03 AM
http://i38.photobucket.com/albums/e128/phat_funky_beats/audio%20testing/bridgingvoltagecurrent.jpg

Bridging a 4 channel amp uses less current than the same amp ran in 2 ohm stereo (assuming same power output). bridging makes more power by doubling voltage (which quadruples power).

Further,
If the impedance load is the same, and the same power is attained, then voltage is the same and current is the same. A non-bridged 2 ch making the same power as a bridged 4ch into the same load will draw the same current as the same voltage.

Now, the efficiency is a different story, but the amps are different so no direct comparison is reasonable and it depends on the amps used. THD is another concern, but you generally have more available power when bridged so you are operating lower on the exponential THD curve.

Finally, you have more options with 4 channel amps, including active or bi-amp. :)

keep_hope_alive
12-12-2011, 12:04 AM
We should compare two identically priced amps by the same manufacturer using the same topology... Ideas?

elballz12
12-12-2011, 03:31 PM
So a 4 channel amp is my best bet? Im a noob yall are kinda confusing me

audiobaun
12-12-2011, 05:15 PM
A 4ch amplifier would be ideal, as you have more options as for more power in most cases, and configurations compared to a 2ch amplifier, for your money.IMO:D

keep_hope_alive
12-12-2011, 07:03 PM
So a 4 channel amp is my best bet? Im a noob yall are kinda confusing me

sorry, Zako and I got into a more detailed discussion.

i recommend a 4 channel amp. but if you can find a good price on a nice high-power 2 channel, then that is ok too. Boston Acoustics has a line of high power 2 channel amps.

i will say that gain setting is more tricky with bridged 4ch, as is splitting the signal. you should use a DMM to set the gains on any bridged amp configuration.

elballz12
12-13-2011, 02:14 PM
Its alright and how about the Alpine MRX-F30 Its 300 rms 4 channel amp?