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My younger brother has a 97 honda civic 4 door lx with stock speakers and entry level pioneer deck from 3 years ago. He is interested in a sub or 2 and a amp and is on a $500 budget. He may even need a new HU and upgrade the speakers. The fronts at least. Perhaps a 50 x 4 channel amp aswell if it fits the budget. Any recommendations SWEZ ? Maybe we can put a budget system toghether. I can get 4 gauge kit from knukonceptz Im thinking of 1 or 2 Infinity Referance 1250w singe 4 ohm vc's or a dvc 4 ohm versian if we go with one. Maybe a 300 rms mono amp or 500-600 mono amp for 2 of them. He listens to mostly hiphop so it whould be nice to sound clean and have some thump to it. I realize these subs are really efficiant and whould compliment his charging system in that car. What do you guys think ? Replies (19) cplkittle on 02/9/2007 22:22:55 I hate to sound like a broken record, but powerbass has some nice products and they are inexpensive. One sub in the right box will easily overpower most 2 sub systems, and in a civic would be more than enough bass. $500 is kinda hard to work with. You can do a 4 channel only if you run the mids/highs on the front channels, and bridge the sub on the rear channels. Two seperate amplifiers are going to eat up your budget pretty quick. It would be better to set it up with a good 4 channel and add a mono later for the sub than to buy cheap amplifiers that squeeze into your budget. As far as a HU, The Pioneer DEH-P4800MP has TONS of features for the price. swez on 02/9/2007 22:47:58 Consider a good 4 channel amp that you can build off of. The rear channels for a single 1250w. (Sealed or ported) This amp can power front speakers and bridge the rear channels for a 4 ohm sub. Figure about 75 watts RMS x 4 will do a nice job for both front and sub here. The rear speakers can be powered off the HU for now if you wish. They're just rear fill and can be upgraded later. Front speakers can be added for clarity and still be within budget if you show this stuff well. Amp: http://www.crutchfield.com/S-GUuqlizYboK/cgi-bin/ProdView.asp?g=120&I=108R7541A Sub: http://www.crutchfield.com/S-GUuqlizYboK/cgi-bin/ProdView.asp?g=520&I=1081250W Front Speakers: http://www.crutchfield.com/S-GUuqlizYboK/cgi-bin/ProdView.asp?g=52000&I=1086010CS OK, this should be a very nice entry level system but give good bump too. If he gets the bass bug and wants even more bump later, add a 2nd matching sub and a Class D MONO amp as budget permits. Shop Google for best prices. I used Crutch as a reference as they give the most complete specs, but not the best prices on the block. Comments? Swez MO on 02/9/2007 23:31:38 Thanks for the fast reply guys. I knew you whould come thru SWEZ :) I just dont want to invest in somthing that will dissapoint us. I wonder how clean and loud this infinity can play in a sealed enclosure. I understand for sealed it should be 1.25 net with some polyfill to help with standing waves and 2.0 net @ 30hz ported if im not mistaken. Swez do you think this 97 civic could handle 2 of these subs plus the 4 channel or do you think we should stick with the 4 channel for the whole system ? I doubt we are going to upgrade the stock alternator. swez on 02/10/2007 00:00:53 Kit offered a very good option w/ Powerbass amps. I have not used them, but he and several others here at CK have and the results are a definite consideration for price, value and performance. If Kit says it works, I trust his opinion and other can too. One ported sub can deliver the same SPL as a dual sealed sub pair. This is especially true in the deep low bass region near PTF. (Port Tuning Freq.) The only thing to consider when porting, is the use of a subsonic filter to protect the sub below PTF. (Easy fix) If he does not wish to upgrade the ALT, the 4 channel option is the best option. Adding a sub amp will tax a small import's electricals to some point on heavy bass hits at idle speeds. We can compensate to a degree with a bigger BAT, (>700 CCA) and the "Big 3" wiring upgrade. The larger the CCA, Cold Cranking Amps) BAT used, the more current draw one can use. Finally, as Kit mentioned... rear speakers upgrades can be added as desired. A 4 ohm coaxial set is a good option here. The front channel amps will share the load, (2 ohms net) and he'll have strong front and good rear channel SPL as well. Here, one can easily add a load resistor to tone down the rear speakers for good fader balance. Swez PS I agree that the DEH-P4800MP is a solid HU upgrade. It's well priced, good features and not overly expensive either. Do you know the HU he is using now? MO on 02/10/2007 00:15:40 Its 4 years old or so and its the DEH-1500 It offers a 3 band parametric EQ and 1 preout with typical entry level stuff i guess. Perhaps we could use this HU and the 4 channel amp and 1 sub Sealed or Ported ? cplkittle on 02/10/2007 00:36:59 with only one preout, you really need a line output converter for the second channel. If the RCA out is not sub preout, the rear channel can be used for the subs. In this case you can at least use the front/rear fade to controll sub gain from the HU. Plus the rear channels generally have more bass output than the front (I believe it is the way they record the music). A HU with a LPF, sub gain, and dedicated sub RCA out is really the best option here, but you can make it work with the one he has. If you go with one sub, port it. This will make up for the volume difference compared to 2 subs, and will make up for a lack of wattage (up to 20%) if you choose a sub that is rated a little higher than the amplifier output. MO on 02/10/2007 00:57:42 I think its time for a new HU and ive always liked pioneers due to there consistancy and all the features you get for the money spent etc.. This looks like it will do a nice job http://www.pioneerelectronics.com/pna/v3/pg/product/details/0,,2076_310069880_338194603_tab=B,00.html?compName=PNA_V3_ProductDetailsComponent Infinity 4 channel amp and the Infinity Referance sub ported Whould 2.0 cuft net @ 30hz be about right for his civic ? swez on 02/10/2007 05:49:21 Yeah, that Pioneer should give him good options to use now or build off later. If he does go ported, 30-35 Hz is a good port tuning range. When porting, need to use an Infrasonic/Subsonic filter to block lows that can harm a ported sub. These will do the job: http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=266-248 If he likes the existing HU and it works well, consider an add on EQ/Line Driver like the 1/2 Din Audiobahn AEQ6, AEQ7 or AEQ8. This is a nice product and only needs 1 pair of RCA's for input. It then splits to 3 pairs of outputs, (Front, rear & sub). It also has a Master and sub volume control plus EQ controls. This unit also has AUX inputs for MP3 players, DVD or I-Pods. Makes things very easy and I have seen them on e-bay for under $75.00. http://www.audiooutfitter.com/store/71213/AEQ7.html Quote: "Plus the rear channels generally have more bass output than the front (I believe it is the way they record the music)." Kit, this is often a function of the amp used and not so much the HU unless the rear channels have bass boost or a sub out channel. This is often controlled by menu features in advanced HU's. Otherwise, the output for front and rear channels are the same... full range. Swez cplkittle on 02/10/2007 12:36:02 understood. I would lean towards a ported box tuned to 36-38 for this type of vehicle. 34-36 if it is a hatchback. MO on 02/10/2007 14:12:26 Hmm 36-38hz seems a bit high. I was thinking 35hz is as high as i whould want to go for a daily driver that can get very loud and sound good at 2.0 cuft net What does infinity recommend ? Im not sure which whould work better. I think i prefer to have the subsonic filter built into the amp or mono amp. I prefer going with a 2 amp setup usually. Maybe a solid 2 channel amp like a ppi a300.2 or ppi a404.2 Im partial to classic amps such as the art series as they are better then 90% of the stuff made these days. cplkittle on 02/10/2007 19:33:54 those amps are worth their weight in gold. I tried to trade a guy out of a 4 channel ppi art once. He said he paid $50 for the amp, I offered him $50 and a power bass amp for it, but I guess he realized he had something at that point and said no. As far as the sub tuning, you can go anywhere between 32-40 and it will sound about the same in a trunk. The reason I suggested higher is because it is easier to get a louder thump the higher the tuned frequency. Alot of SPL vehicles with less than 6 subs will tune their enclosure(s) to 40-48Hz for that reason. If the box is larger, it is easier to increase the volume at lower frequencies. swez on 02/10/2007 21:28:12 Ever listen to test tones between 30-40 Hz? Pretty hard to distinguish between them w/o a very accurate woofer system and some amplification. There is very little bass information below 35 Hz., unless you listen to a huge pipe organ with ultra low pedal tones or synth/piano tones a lot. Also, the rolloff curve below ~45 Hz is pretty steep on most subs. That's why we port at 30-40 Hz. We compensate for that steep rolloff by porting in this range. (Perhaps some EQ too) In a nut shell, 35 Hz., porting is a very good range for daily drivers. Swez MO on 02/10/2007 22:00:29 Hey swez they have a buy one get one free on these. http://www.crutchfield.com/S-6gQqFYH30KF/cgi-bin/ProdView.asp?g=520&tab=detailed_info&i=108PER121#Tab How whould these compare to the referance series that im looking at ? swez on 02/10/2007 22:17:12 The Kappa Perfect is the next step up in the Infinity sub line. It's a very good budget SQL sub and does fine in sealed or ported apps. If you go for dual 12's, A Class D sub amp is highly recommneded. Perhaps the Infinity Ref 611a would suit him well. http://www.crutchfield.com/S-hucid23ZOfX/cgi-bin/ProdView.asp?g=120&I=108R611A Now, with a strong 4 channel and this sub amp, electrical upgrades will probably be manditory. The Ref 7541a and 611a will draw about 100 amperes of current at full power. In this Honda Civic, I doubt the stock ALT is more than 85A's at full output. To feed these guys and the rest of his electrical needs, looking at 130A's or more to prevent severe light dimming issues at high SPL bass levels. Figure about $200 for a H.O. ALT here and perhaps a Gel Cell type BAT as well. (750 CCA is good) This will add about $425 to the bottom line. Think it through carefully as his original budget was $500.00 as mentioned earlier. Swez MO on 02/10/2007 22:49:51 I decided not to get the Ref 7541 and opt for the ppi a404.2 or a300.2 off ebay instead and go with either a Referance 12 or Kappa Perfect 12.1 in a sealed or ported. Thats what ive narrowed it down to. swez on 02/11/2007 12:33:50 OK, that's a good call for sub amping and he can even consider Tri-mode so that he can power front speakers and a 4 ohm sub this way. He'll need passive filters for the sub and front speakers too. Run the amp in full range mode and don't use the amp crossovers when doing Tri-mode though. FYI: The Art series was pre-DEI days and it's a great amp. One thing it lacks, are internal crossover networks. It's a straight up amplifier, but no filtering. Swez MO on 02/11/2007 14:15:55 The a404.2 does 50 x 4 @ 4 ohms The a300.2 does 75 x 2 @ 4 ohms or 150 x 2 @ 2 ohms I whould probably use one of the above for the speakers and use a seperate mono amp for the subs. Great thing about these amps is they are regulated from 10-14.4 Volts so you get the same power in that range. Really quality stuff. NO worries on the amp lacking xover. HU should offer this. Whould you know if a Nakamichi CD-400 offers internal xovers ? I know it has 3 4V preouts. swez on 02/12/2007 21:56:08 The Nak CD400 does not have internal crossover features. It's really a bare bones HU with some very basic, but useful features. It does have 3 band EQ and an AUX input. It's sleek, simple and elegant. Do a google search for more details. I think the PPI Art Series does not have crossovers either. In this case, you'll probably need an active crossover network or F-Mods from Harrison Labs, to get HPF for the full range speakers of choice. This one should do the trick and they come in pairs: (70 Hz., HPF) http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=266-272 As for your sub amp, use one that has a variable/adjustable LPF network. Even better, an amp that has a remote bass control you can mount at the dash. Swez MO on 02/12/2007 23:17:16 Personally im using a Pioneer Premier DEH-P780MP http://www.pioneerelectronics.com/pna/v3/pg/product/details/0,,2076_310069882_291159491,00.html and its one of the best HU's you can get for the money. One of my all time favorites at that. I also have a older but very nice Alpine CDA-9813 from 2003-04 years. Im running the 780 as my HU CDT HD62 PPI A600.2 for the hd62's JL 12w6v2 sealed JL 500/1 Really nice SQ setup right now that gets fairly loud thanks to the 16 band EQ that the 780 comes with. LOVE THIS EQ ! I find the BBE to be a must on this unit. Just night and day differance with it on and off. I have my HPF set to 12db @ 100hz to my HD62's I have my LPF set to 18db @ 80hz to my 12w6v2 and it gives a nice rolloff to the sub and a flat response. Everything setup this way sounds really tight and punchy and hits every single note with precision. My ride is for sale now so i will be getting a new car by next month. As for my brothers car. I think im going to stick with a Pioneer HU. PPI a404.2 50 x 4 @ 4 ohm PPI a600.2 300 x 2 @ 2 ohms stereo or 600 x 1 @ 4 ohm bridged That should be a sweet setup when its done. Now i need to find some speakers for this amp that are good. Its tax time so lets throw the budget out the window for now. Subs and Speakers that will work nicely off the amps mentioned. Copyright ClubKnowledge 2009 * All Rights Reserved |