Need some help picking an adequate amp |
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Need some help picking an adequate amp |
computers4kids |
Oct 23 2011, 08:39 AM
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#1
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
Recently changed my pod speakers to the ones below and primarily just use my phone or ipod. Pretty much never listen to the radio. No amp.
I've come to the point I would like some more volume and quality sound and would like to add an amp and a sub--need your help. I don't want to cut my doors for more speakers. Hopefully a foot sub or console sub with these speakers will be adequate for me. I'm thinking of mounting a amp in my center arm rest with a little modification or behind the driver seat. I don't want to mount the amp in the trunks. Can you help me know what size amp (RMS) I need as a minimum, number of channels, and do I need a premamp. The guy at the stereo store said I need a premamp if I want really good sound without static?? Speak slowly...I am not a stereo guy LOL (IMG:style_emoticons/default/smile.gif) Polk Audio - 4" x 6" Plate-Mounted Speakers with Poly-Mica Composite Cones (Pair) Handles up to 150W peak power (50W RMS) For rich sound. 71Hz - 22kHz frequency response For accurate sound reproduction. 3/4" silk/polymer soft dome tweeter Delivers clear, well-defined highs. 4" x 6" poly-mica composite woofer cones and rubber surrounds For enhanced bass response. The stiff, lightweight design delivers big sound and minimal distortion. 4 ohms impedance Conducts power evenly to keep the speaker at an appropriate level. 91dB sensitivity Picks up the highs and lows for faithful sound reproduction. Balance Driver technology For pure sound. Pole Plate heat sink Promotes heat dissipation for great power handling and reliability. (IMG:http://www.914world.com/bbs2/uploads/post-4253-1257311673.jpg) |
underthetire |
Oct 23 2011, 10:02 AM
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#2
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
A good 4 channel amp. ~100 watts per channel. Two front channels to your plate speakers, the rear will be bridged (both channels in to one) to run a 8" or so sub. Don't think you need a pre amp personally with iPod. You can adjust the input signal on most amps to tweak the sound. You will need to get an adapter to get al 4 RCA connections to one 3.5 mm iPod plug. Make sure the amp has a built in crossover, you don't want to put any bass in to your plates and you don't want highs in your sub.
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Mike Bellis |
Oct 23 2011, 10:11 AM
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#3
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Bottom line...
Buy a name brand amp. (Kenwood, Alpine, Rockford Fosgate, etc) 100-200 watts The fedral trade commission does not regulate car amp ratings. So, the manufacturers can claim any output they want. Major manufacturers (name brands) will rate their amps correctly. Off brands will claim outrageous ratings. |
underthetire |
Oct 23 2011, 10:17 AM
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#4
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
http://www.crutchfield.com/p_113KAC8405/Ke...5.html?tp=35782
This one should drive everything fine, wont be one of those b boxes, but will be loud and clear. |
computers4kids |
Oct 23 2011, 10:50 AM
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#5
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
Thanks. When you bridge to channels together do you get the RMS watts of both channels added together or less?
My last car I had used y connectors to connect a 2 channel amp. Is a kit like the one below worth the effort to gain an external volume control separate than the ipod? Currently I have a cable that charges my ipod as well as sends the signal to my period correct radio. Attached image(s) |
Mike Bellis |
Oct 23 2011, 10:57 AM
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#6
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
Bridging will "double" the output. Not truely double but close. You can also run in tri mode; 2 stereo channels and a bridged mono channel for bass.
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underthetire |
Oct 23 2011, 10:59 AM
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#7
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
Thanks. When you bridge to channels together do you get the RMS watts of both channels added together or less? My last car I had used y connectors to connect a 2 channel amp. Is a kit like the one below worth the effort to gain an external volume control separate than the ipod? Currently I have a cable that charges my ipod as well as sends the signal to my period correct radio. Might be a nice option, less adapters and your iPod will never go dead. Not sure the volume control would be handy or not. How much is that kit? |
computers4kids |
Oct 23 2011, 11:31 AM
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#8
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
Thanks. When you bridge to channels together do you get the RMS watts of both channels added together or less? My last car I had used y connectors to connect a 2 channel amp. Is a kit like the one below worth the effort to gain an external volume control separate than the ipod? Currently I have a cable that charges my ipod as well as sends the signal to my period correct radio. Might be a nice option, less adapters and your iPod will never go dead. Not sure the volume control would be handy or not. How much is that kit? $59 Since the ipod/phone sits between the seats the volume control might be handy for not having to look at the ipod while driving. Another option would be to use the volume control for just the woofer since I'm not sure how easily the controls on the amp are going to be. |
underthetire |
Oct 23 2011, 11:37 AM
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#9
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914 Guru Group: Members Posts: 5,062 Joined: 7-October 08 From: Brentwood Member No.: 9,623 Region Association: Northern California |
Thanks. When you bridge to channels together do you get the RMS watts of both channels added together or less? My last car I had used y connectors to connect a 2 channel amp. Is a kit like the one below worth the effort to gain an external volume control separate than the ipod? Currently I have a cable that charges my ipod as well as sends the signal to my period correct radio. Might be a nice option, less adapters and your iPod will never go dead. Not sure the volume control would be handy or not. How much is that kit? $59 Since the ipod/phone sits between the seats the volume control might be handy for not having to look at the ipod while driving. Another option would be to use the volume control for just the woofer since I'm not sure how easily the controls on the amp are going to be. Cheap enough. You can always adjust the bass through the eq function of the iPod as well. |
computers4kids |
Oct 23 2011, 07:54 PM
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#10
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
What do you think about one of these for some base in a 914?
Boss Audio BASS900 - 8" Low Profile Amplified Subwoofer, Remote Subwoofer Level Conrol, 900W Attached image(s) |
Mike Bellis |
Oct 23 2011, 10:15 PM
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#11
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None |
What do you think about one of these for some base in a 914? Boss Audio BASS900 - 8" Low Profile Amplified Subwoofer, Remote Subwoofer Level Conrol, 900W May be OK however, this proves my point too. Look at the fuses. Two each 15 amps (30 amps total) Power=Amperage X Volts 14V X 30A =420 Watts max So they claim 900 Watts but ohms law equals 420 Watts. Boss is not a name brand. But this setup may work fine in a 914. |
computers4kids |
Oct 24 2011, 06:59 AM
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#12
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
What do you think about one of these for some base in a 914? Boss Audio BASS900 - 8" Low Profile Amplified Subwoofer, Remote Subwoofer Level Conrol, 900W May be OK however, this proves my point too. Look at the fuses. Two each 15 amps (30 amps total) Power=Amperage X Volts 14V X 30A =420 Watts max So they claim 900 Watts but ohms law equals 420 Watts. Boss is not a name brand. But this setup may work fine in a 914. Actually, I was thinking of something like this in addittion to an amp. I liked the compact size and could be tucked away and be self contained. I ended-up buying the amp below but now trying to decide how to do the base. I have coca mats so I believe the floor sub idea is out. Don't want a center console. Still thinking. Pioneer 4-Channel Class FD Bridgeable Amplifier Detailed item info Product Identifiers Brand Pioneer Model GM-D9500F MPN GM-D9500F UPC 12562967608 Key Features Amplifier Type Multi Channels Channels 4 Channel Input Voltage 14.4 volt Bridgeable Bridgable RMS Power at 2 Ohms 100 W x 4 RMS Power at 4 Ohms 75 W x 4 Performance Frequency Response 10 Hz - 35 Hz Signal to Noise Ratio 95 dB THD at Rated RMS Power 0.06 % Crossover / Equalizer Bass Boost Without Bass Boost High - Pass Frequency 40 Hz - 500 Hz Low - Pass Frequency 40 Hz - 500 Hz Technical Features MOSFET Circuitry Yes Dimensions Width 8.88 in. Depth 7.88 in. Height 2.14 in. |
RJMII |
Oct 24 2011, 08:40 AM
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#13
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Jim McIntosh Group: Members Posts: 3,125 Joined: 11-September 07 From: Sandy, Utah Member No.: 8,112 Region Association: None |
QUOTE Performance Frequency Response 10 Hz - 35 Hz Signal to Noise Ratio 95 dB THD at Rated RMS Power 0.06 % Those are the details that are good. (IMG:style_emoticons/default/smile.gif) That way you don't have to try and compensate bass with the ipod EQ at 80hz when the frequencies you 'feel' are more-so 30-50hz. EDIT: |
clapeza |
Oct 24 2011, 11:05 AM
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#14
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Member Group: Members Posts: 229 Joined: 7-February 11 From: South GA Member No.: 12,677 Region Association: South East States |
Can you provide a link for the volume control connection kit? I've considered just running an amp with input jacks, but having a volume control other than what's on the iPod would be nice.
My last car I had used y connectors to connect a 2 channel amp. Is a kit like the one below worth the effort to gain an external volume control separate than the ipod? Currently I have a cable that charges my ipod as well as sends the signal to my period correct radio. |
computers4kids |
Oct 24 2011, 06:42 PM
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#15
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Love these little cars! Group: Members Posts: 2,443 Joined: 11-June 05 From: Port Townsend, WA Member No.: 4,253 Region Association: None |
Can you provide a link for the volume control connection kit? I've considered just running an amp with input jacks, but having a volume control other than what's on the iPod would be nice. My last car I had used y connectors to connect a 2 channel amp. Is a kit like the one below worth the effort to gain an external volume control separate than the ipod? Currently I have a cable that charges my ipod as well as sends the signal to my period correct radio. The kit to connect an ipod/mp3 player to a 4 channel amp can be found at here. Price is $59 If you go to buy this amp...do an internet search. I found the price varied over $130 (159-270) from the usual suspects, some even included no tax and free shipping. Interesting enough, Walmart was one of the highest. |
biosurfer1 |
Oct 24 2011, 06:48 PM
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#16
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Teener fo Life! Group: Members Posts: 3,020 Joined: 3-August 03 From: Roseville, CA Member No.: 977 Region Association: Northern California |
Mark...I have pretty much that same amp in my truck (few years older model) and have been happy with it ever since. I have it running 2 5 1/4" components and a 6" component set and it works fine. Should work great for you.
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