what to look for in a good component amp

[500000watts 10+ year member]

im going to be needing a 4 ch amp for my components and im just wondering what do you look for in a amp for your speakers verses amps for subwoofers, i know they have different crossovers and gain settings but what is it you really want in a good component amp?

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[iceteebone 5,000+ posts]

just proper power. i usually use external xovers

 

[500000watts 10+ year member]

yeh my boston S60 came with a x-over, im lookin for an amp to put out about 50RMS on 4 ch.

so if it comes with x-over then you dont really need any specific amp, just something that gives them the rated power?

 

[iceteebone 5,000+ posts]

i was thinking you were running active for some reason, but all you need is some sort of hp filter. look for something that fits your budget that does 50 x4

 

[Hoodlum007 10+ year member]

you will want the amp to be very clean,a low THD level, the cleaner the sound the amp produces the better your mid's and hi's will sound.

 

[500000watts 10+ year member]

im still confused on the different types of x-overs. can someone help me with that quick so i understand better?

maybe that will help me with my decision

 

[Latina33 10+ year member]

If you're looking for excellent build quality, clean power, and crystal clear sound for your comps, you should consider buying this amp from me. This will make your comps perform the way they were meant to:

Alpine Expert MRV F505 4 channel amp --

Features

· 4/3/2 Channel Operation

· Mosfet Power Supply

· DC-DC PWM Power Supply

· No Current Limiting

· Double Buffered Pre-Amp Input Circuitry

· Discrete Pre-Amp Stage

· MOSFET Final Outputs

· DC Straight Design

· STAR Circuitry

· Duo B Feedback Circuit

· Solid Copper Bus Bars

· Top Mounted LED Power Indicator

· Multi-Mode

· Independently Adjustable Crossover (HP/LP/BP Capability)

· Top Panel Adjustment of Crossover and Gain

· 4 Volt Straight Input Switch

· Input Mode Selector Switch

· Continuously Adjustable Gain Control

· Gold Plated RCA Input Connectors

· Extra Large Gold Plated Screw-Down Power Terminals

· Gold Plated Screw-Down Speaker Terminals

· Non-Fading Pre-Amp Output

Specification

RMS Power (at 12V, 20Hz—20kHz)

Per channel into 4 ohms .........................50W x 4 (0.08% THD)

Per channel into 2 ohms .........................65W x 4 (0.3% THD)

Bridged 4 ohms .....................................130W x 2 (0.3% THD)

RMS Power (at 14.4V, 20Hz—20kHz)

Per channel into 4 ohms .........................75W x 4 (0.08% THD)

Per channel into 2 ohms .........................100W x 4 (0.3% THD)

Bridged 4 ohms .....................................200W x 2 (0.3% THD)

General

Frequency Response ..............................10Hz—50KHz(+0,-1dB)

Signal to Noise (S/N) .............................105 dBA (referenced to rated power)

Input Sensitivity (for rated power) ...........200mV to 4V

Slew Factor ..........................................Greater than 5

Input Impedance ..................................10k ohms

Speaker Impedance ..............................4 or 2 Ohms (stereo), 4 ohms (bridged)

Dividing Network ..................................50Hz—8000Hz HP/LP/Bandpass(12dB/octave)

Power Requirements .............................11—16V DC (negative ground)

Heat Sink (WxHxD):

240mm x 53mm x 400mm (9-7/16"x2-1/16"x15-3/4")

Foot Print (WxHxD):

260mm x 53mm x 400mm (10-1/4"x2-1/16"x15-3/4")

 

[linvillegorge 10+ year member]

Way to pimp your $#it on someone's info thread! I've saw people throw in an offer here and there, but wow - that's a straight up for sale thread you posted!

 

[Notwerk 10+ year member]

Um, yeah, that was random...

Anyway, how many speakers are you looking to power? Four?

If you're using passives, and powering a front-stage set of components, you really only need a two channel amp. The passive divides up the power from each channel between the midwoofer and the tweeter.

So, you just want something close to the RMS wattage of the speaker.

If you need to power two pairs of components, then you're looking for a 4-channel. Again, you want something around the RMS wattage.

If the components brought passive crossovers, you really don't need the crossovers on the amp so much, except maybe to set a low-pass to keep subbass frequencies (somewhere between 80 and 100 hz. and below) off the components.

 

[iceteebone 5,000+ posts]

these thd and signal to noise ratio's aren't even audible to the human ear so don't get caught it up in looking at thd and s/n numbers

 

[500000watts 10+ year member]

what are some brands of amps i should look for?

and is it really worth amping my comps, i have heard that you can turn the volume up more before distortion and your comps will sound clearer and more full?

 

[500000watts 10+ year member]

here are some i found

what do you think i should go with?

http://cgi.ebay.com/HIFONICS-TXi4406-TITAN-2-3-4-CH-AMPLIFIER-NEW_W0QQitemZ290047326948QQihZ019QQcategoryZ4950QQrdZ1QQcmdZViewItem

http://cgi.ebay.com/JL-AUDIO-300-4-AMPLIFIER-SLASH-SERIES-AUDIOPHILE_W0QQitemZ330046583232QQihZ014QQcategoryZ4950QQssPageNameZWDVWQQrdZ1QQcmdZViewItem

http://cgi.ebay.com/NEW-KENWOOD-400w-4-CHANNEL-CAR-STEREO-AMPLIFIER-AMP_W0QQitemZ270048858388QQihZ017QQcategoryZ39741QQrdZ1QQcmdZViewItem

http://cgi.ebay.com/4-Channel-AMP-600-Watts-Car-Amplifier-LANZAR-HTG414_W0QQitemZ270050949032QQihZ017QQcategoryZ4950QQrdZ1QQcmdZViewItem

http://cgi.ebay.com/SOUNDSTREAM-XTA360-4-360-WATTS-RMS-4-CHANNEL-NEW-2005_W0QQitemZ250046906071QQihZ015QQcategoryZ4950QQrdZ1QQcmdZViewItem

or if there are any other ones i should look at simmular to this?

do all of these have the ratings i want?

 

[iceteebone 5,000+ posts]

of the amps you posted, the jl would be my choice. good power and regulated power supply

 

[500000watts 10+ year member]

yeh thats the one im leaning towards, do you think that will treat my bostons nice?

does it have all the good specs of a comp amp im lookin for?

 

[iceteebone 5,000+ posts]

sure but idk if i would buy it there. they are unauthorized and have a no return policy.