Amplifiers / Head Units / Processors / Electrical

is it good to have less or more of it? and also why do most companies only post THD of 4 ohms, does it change with each load?

Ok so I have a crossfire VR4KD, and this amp has 2 4awg positive inputs & 2 4awg ground inputs. My question is this.... Is it neccessary to have all 4awg as inputs (+ & -) or would it be a problem to run 2 pos 1/0 with 4awg reducers and 2 4awg as gounds? Will the grounds being 4 and the pos being 1/0 be a problem for the amp?

I have an old school LP 1502IQ. It has not be modded. I'm getting ready to start putting together something for my wife's car. She wants a good sounding front stage with minimal bass from a sub. She listens to all kinds of music. Is this amp worth sending out to be modded and put on a component set of Focals or similar? Or should I just sell it and get a Sundown amp. If I go with the Sundown amp...could the 100.4 do the front components and also a sub like the SA-8 on pre-sale now? This is going in a Kia Spectra5. The specs show that it has to have a slim mount component set. Does anyone know of any components around the same quality as the Focals that are shall…

Is the RCA out on the slave amp still live or is it defeated along with the other functions IE: gain, LPF, subsonic, etc.? Reason I am asking is with the RCA lengths and the way my amps are installed is it would give me a cleaner look if I could use the RCA out on one my slave amp to the RCA in of the other strapped pair's master. Here is a pic, I want the top 2 amps to be the master and slaves on bottom. I want to run RCA under and between amps rather than on top. I have nothing working right now so I cant check it for myself and dont want to get that far and find out it wont work. Cliffs: does the RCA output of the slave amp still work when strapped? Thanks!

Im looking for a hu im not into the whole dvd players seeing must of them dont put out high output sounds if there is one let me know. The hu im looking for has to have a built in amp and have some good looking color display i looked at a few kenwood jvc etc and im still lost so thought i put this here. The system thats going into my 01 impala so far is a jl audio JX1000/1D amp as far as the speakers ive been looking at some ssa subs but i need to get the hu outta my way 1st. Thank you in advance.

First off I just discovered this site and it's great! I've read through 10 pages in this section alone for some answers and got some good ones but some were unanswered so I'm going to through a bunch of questions out there and hopefully some of you can help me out heres a quick rundown of what my plans are 15" btl sundown saz3000 2x sundown 125.2 big 3 150 or 280 amp alt (will explain) ok so I am unsure on the battery situation. I want to keep my voltage as close to 14v as possible for extended periods of time. I drive around the country so 8-10 hour trips aren't unusual. the largest alt I could find without breaking the bank is 150amps BUT someone told me they had a cust…

Hey guys, I've received good information in my other topic so I thought I'd come back for some more. Got some questions to do with the setting on my sub amp and head unit Currently I'm running a infinity reference 611a amp powering 2 infinity 1050w subs but I'm looking to move up to a single 15". my head unit is a pioneer deh-p80mp and I play all my music off my multi-media player via aux input but the devices output is really quiet so with the way my setup currently is, the maximum I put my head unit to is 55 out of 60. I thought that head units have a point at which they clip but I can't hear any distortion. So I don't know if this is a problem or not. The way the sub a…

I recently got a nice deal on two used mm1400.1d's. Now i'm considering running them together on one BTL 12. Does it matter if one has a little more wear and tear than the other? Will it be okay as long as i check that i have the amps sending the same output wattage with a multimeter? Is it a bad idea all together?

2004 Explorer 4.0 Yellow Top Big 3 will be done in 1/0 when installed Stock 135A Alternator 2 15" Icons Sundown 1500 Sundown 100.4 Couple quick questions before I get a alternator & everything installed: 1 - How do I calculate how big of an alternator I need? Ive seen a couple different way but whats most accurate? Also have a 100.4 2 - Would a 200A alternator and a yellow top suffice for the two amps to stay above 13v at idle? I can try 250A if need be. 3 - Anyone ever use qualitypowerauto.com to get an amp? I want to upgrade to 200A for no more than $300 if I can

I am interested in a four channel amplifier and have been looking at ARC, Sundown, and a few more. Has anyone compared the SQ of these and other amplifiers? Also, where is the Sundown amplifiers made? Any suggestions would be appreciated. Thanks

What are some of alpines flip out monitors that work with the h701? i was looking at getting a iva - d310. Any experience with this headunit? Also would i be able to hook this up to a pioneer 9800 headunit? Without a dvd display is manually tuning this a pain?

I have plans of adding an additional 3000D and a BTL 18 to my existing 3000D and BTL 18. The problem is that the 3000D is no longer in production, and DB-R is running low. What would my options be if I couldn't get another 3000D when I do the upgrade? I don't think it would work properly if I combined a 3000D on one BTL and a 3500D on the other.... please inform. Thanks!

I have: mechman 270 amp 2 kinetik hc2000s 0 gauge knuknoceptz with big three -1 hifonics brz1200 (subs) rockford prime (highs) I installed the mechman alternator it said in the instructions to NOT ground to the body as it will cause problems so I skipped this step. My question is do I need to ground the battery in the back if the one up front is not grounded to the frame? I have ran the batteries in parallel using 0 gauge on the - terminals amd + terminals so is this step really necessary? My next question is using a distribution block. I have a 0 gauge distribution block that splits into two 4 gauge terminals. I have my hifonics grounded to the frame with 0 gaug…

So I just picked up a 2005 TrailBlazer and the factory Head Unit has to go.... I have alway like Kenwood head Units so, I'm looking at the Kenwood DDX514.... http://www.crutchfield.com/p_113DDX514/Kenwood-DDX514.html?tp=20217 It seems to cover most of my wants... Nice Bright easy to see/read display in all lighting conditions. If its going to have one, it might as well be good! Ipod control, not just Aux input, but seemingly native controls with Album art, playlists and all (need a 30.00 cable) Ability to hook up an HD tunner (extra 80 bucks I think) Ability to hook up a Sirius (again Controls it natively, not just a aux input) (I have sirus and love it for travel) Abil…

Alright so my Fi 12 D2 q should be arriving tomorrow. I arleady have my Sundown Saz 1000D. I've been reading as much as I can on here so I just want to make sure I have everything straight. Wiring my sub to 1 ohm I need to take the positive's and run a wire from one to the other andsame for the negatives. Then take a wire from one of the pos and neg's and run them to the amp. I noticed the amp has 2 sets of speakers inputs A & B. I would hook my sub up to one set correct A or b? As for setting up the amp I have a Alpine CDA-9884 it has a subwoofer level 0-15 if I understand this I put the subwoofer level to 15, bass to 0. Take 1000wRms x 1ohm load, Square root of 1…

I saw a link that Ryan posted in the ihop for a Directed 1100d5 that does 75x4 at 4 ohms and 600x1 at 1 ohm on the sub channel. It doesn't say anything about bridging the amp, but I was wondering if the amp would work if I wired it to where the left side was on 2 channels of the amp and the right channel was on 2 channels of the amp. This would be kind of like bridging it, but running a wire in all 4 pieces. I think if I bridge it, it would put out too much power. Has anyone ever done this? It is sounding like it won't work or will be bad for the amp, but I am not sure.

anyone ever had experience with hifonics? i've heard a lot of trash talking and underrating, but still even if it's underrated, it would be only pushing around 1000 or so... that's still a good deal for only 180$ but if these amps just absolutely suck, is there any amp someone could suggest in the 250$ range that would produce about 1000 watts rms? thanks a lot

How many in-line fuse holders do I need? 1/0 from front to a Stinger T splitter (http://www.woofersetc.com/p8033/SPD512--Stinger-1-0-Gauge-Tee-Distribution-Block.htm) and 1/0 going to SAZ-1500, and 4ga going to a Alpine PDX 4.150. I am going to order a Stinger 150 to go between the SAZ amp and the T and a 60amp to go between the Alpine amp and the T Do I also need a 250 amp inline up front under hood or is that overkill? Thanks

i have heard from a few people to set my loudness on my headunit to off. i was just wondering why. any help would b great.

i'm installing an indash into an old explorer. heres the problem..... we wired everything up right, used the same wiring harness that was in the truck. no fuses blown or anything. indash turns on.... but we got no sound. took off the indash harness and tried battery poppin speakers... still no sound. tried hard wiring it so the truck harness and still no sound.... my guess is that the truck harness is bad and that we need to hard wire all the speakers....

I have an aftermarket Pioneer HU (AVIC F900BT) and it has a sub control level (from 0 to 6) and bass boost (0 to 6). Would having a bass knob make any difference or is it the same thing as the bass boost on the HU?

so i am going to get this out the way right now, if you don't have anything constructive to add please don't post. looking for serious feedback here. i am just curious and have an itch to know, so i am sorry if this seems like a stupid question to you guys. ok so i have a pretty decent handle on car audio, been in and around the scene for years, but most of my expertise in in other forms of electronics, now my room mate and i just got done installing a killer system in a friends cadillac, and we only have 1 possibly 2 depends on how messed up the other one is of the bass knobs we need. they are for 3 older series RF bd1000's. any way my question is what stops me from usin…

I currently have 2 batteries in my car. I've been using my ctek 3300 to charge both at the same time... Shizz mentioned something about not charging batteries at the same time because of possible issues with rest voltage differences between batteries. If I want to charge mine separately, could I just disconnect the positive(charge) wire and leave the ground connected when charging the batteries so they are charged separate??? Does this make sense?

If I get one of these ground distributions blocks do I need to ground it the frame of my car or does it act like a self ground. Answer to this question would be greatly appreciated. Sincerely, Matthew

Hey all.Im curious about hooking up two planet audio bb2 2400 watt rms amps.Here is my question.When haveing to of these amps hooked together it says its 2 ohm stable.My subs are dual 4 ohm and I have 2 wired to 1ohm.If I bought another BB2 how would it work?Like would each amp rung at 1/2 ohm or what since the subs are dual 4 ohm?If so,would I be better off to run 1 amp to each sub and run each at 2 ohms?Would this make me louder at all doing each at amp at 2ohms or would I be about the same? My electrical consists of a 220 amp alt,All 1/0 wireing including big 3 in 1/0 and I have a extra batt in the back. Thanks and let me know please.