2 channel amp question

2011_6Spd · 11-27-2013, 09:38 PM

So I put in my component speakers powered with an aftermarket headunit (17w rms). Everything sounds great when I'm parked but when I'm flying down the road it just seems like the component woofers aren't hitting very hard. I got crystal clear highs but not much thump. The component speakers I got are rated for peak 45w rms. Do I need to get a 2 channel amp with about 50w rms per channel to make em hit harder. I'm not looking for <40Hz thumping but it just seems that the woofers aren't getting the power they need. I've verified they are wired in correct phase too.

I've looked for a 2 chnl amp but the ones I find seem to have crapola SNR of around 80dB. I'm used to amps in the 95-100dB SNR range. Any opinions on these lower SNR amps? I'm not looking to spend much more than about $150 for a small 2 channel amp. Any recommendations from the audio gurus?

RonRizz · 11-28-2013, 06:06 AM

WoofersEtc.com - PRS-D800 - Pioneer 2-Channel Class D Amplifier Can be had elsewhere on the web for about $149. Good, solid amp, small footprint, and some headroom for you power-wise as well. If she sounds good while parked, its simply road noise drowning you out, as you suspected. More power never hurts!

zakimak · 11-28-2013, 05:10 PM

Quote:

Originally Posted by 2011_6Spd

I've looked for a 2 chnl amp but the ones I find seem to have crapola SNR of around 80dB. I'm used to amps in the 95-100dB SNR range. Any opinions on these lower SNR amps?

SNR around 80 db is relatively low for an amplifier. Are you sure the reading is for straight SNR and not Crosstalk SNR? Meaning the SNR between channels? That said, it is not as bad as you think given the car environment. Road and engine noise is way more than the noise floor of the amp.

Fountainhead · 11-28-2013, 07:12 PM

Clarion and Alpine make 4 channel Class D amps that are more power than a standard head unit also, but not as much power as the little Class D Pioneer.

11-27-2013, 09:38 PM	#1 (permalink)
2011_6Spd Base Member Join Date: May 2011 Location: Orlando, FL Age: 44 Posts: 124 Drives: 2011 370z 6spd sport Rep Power: 14	2 channel amp question So I put in my component speakers powered with an aftermarket headunit (17w rms). Everything sounds great when I'm parked but when I'm flying down the road it just seems like the component woofers aren't hitting very hard. I got crystal clear highs but not much thump. The component speakers I got are rated for peak 45w rms. Do I need to get a 2 channel amp with about 50w rms per channel to make em hit harder. I'm not looking for <40Hz thumping but it just seems that the woofers aren't getting the power they need. I've verified they are wired in correct phase too. I've looked for a 2 chnl amp but the ones I find seem to have crapola SNR of around 80dB. I'm used to amps in the 95-100dB SNR range. Any opinions on these lower SNR amps? I'm not looking to spend much more than about $150 for a small 2 channel amp. Any recommendations from the audio gurus? __________________ 2011 Brilliant Silver 6spd w/sport pkg 2008 Silver CBR600RR

11-28-2013, 06:06 AM	#2 (permalink)
RonRizz A True Z Fanatic Join Date: Aug 2011 Location: Pine grove, Pa Posts: 2,136 Drives: 2 feet, 3 pedals Rep Power: 6775	WoofersEtc.com - PRS-D800 - Pioneer 2-Channel Class D Amplifier Can be had elsewhere on the web for about $149. Good, solid amp, small footprint, and some headroom for you power-wise as well. If she sounds good while parked, its simply road noise drowning you out, as you suspected. More power never hurts! __________________ P99rs Head Unit--- Amps- 2 Pioneer Prs800d --- Zapco ST1000MX---Zapco ST-4XSQ---- SI BM mk5 Subs---SI TM65v2 Midbass--- SI M3 mids--- SI M25 xbl2 tweeters ----- 2016 MECA street class 3rd place at world finals

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11-28-2013, 07:12 PM	#4 (permalink)
Fountainhead Track Member Join Date: Feb 2013 Location: FL Posts: 834 Drives: 2019 Civic Type R Rep Power: 14	Clarion and Alpine make 4 channel Class D amps that are more power than a standard head unit also, but not as much power as the little Class D Pioneer.