Rear fill overkill?

[maylar 10+ year member]

I have a set of Type X comps for the front, was going to buy a set of coax's for the rear fill, but still have another set of Type X's I could use instead. They are going on the rear deck in 6x9 slots but I have an adapter plate that will let them fit easily. Would this be too "good" for the rear fill? They will be powered by a PA 75x4 amp so power is not an issue. Before you give opinions that you wouldn't use a rear stage, please keep in mind that it's not my car and rear speakers are a must. I'm also curious how much more difficult it would be to tune correctly. Thanks for all the knowledge.

This was your original queston. I interpreted this as you know rear fill sucks, but you're gonna do it anyway. Did I miss something? Why did you ask the question if you already know what you're gonna do?

You asked if components were "too good" for rear speakers. The answer is yes. Rear seat passengers' heads are right next to the speakers. A nice mellow set of 6X9 3-ways are fine. But if you already have something that'll fit, use them.

You also need very little power to make them heard from the back seat. Amping them is a waste of amp channels. Take my word for this - been there, done that. The more power you give them, the crappier your front stage gets... you can't "tune it correctly"... but you already knew that.

For the record, I like rear fill in my car. Without it, a big car sounds hollow. It also allows me to keep the volume low and still have the rear seat passengers hear the music when I have a full load of people.

 

[95RAM 10+ year member]

3. you can run coaxials off Hu power without worrying about underpowering them....

//content.invisioncic.com/y282845/emoticons/bsflag.gif.21f42eccd34b7d1eb1608fb1b59b69c3.gif My hu is definitely underpowering my pioneer coaxs.

 

[audiolife 5,000+ posts]

unless its a convertable or a bus rear fill is almost a waste EVERYTIME. if i have doubters you dont have a clue about what a good frontstage is. only time i would ever recomend rears is if the only place you are going with your system is a dek and 4 other than that its a waste as well

 

[themainjam 10+ year member]

//content.invisioncic.com/y282845/emoticons/bsflag.gif.21f42eccd34b7d1eb1608fb1b59b69c3.gif My hu is definitely underpowering my pioneer coaxs.

LMAO he said cheap coaxials.... not ones that need to be powered..... //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[OdieTRP 10+ year member]

Maylar, that was exactly the type of answer I was hoping for, thank you. The only way I know is by research, not by personal experience. When I do my car I will certainly do only a front stage. I would like to do 6x9's but are there any "mellow" ones that are fairly inexpensive? I don't wish to open the box and waste the second set of Type X's when I can either sell them to someone who will appreciate them more or hang onto them for later. They are too deep for my own car so I have yet to decide what to do with them. Now I know that putting them on the rear deck would be a mistake and that was all I was looking for. I knew I would get a bunch of responses telling me that rear fill is a mistake but I was looking for facts based on experience, not useless opinion that does nothing to solve the problem. Thank you again.

 

[95RAM 10+ year member]

Maylar, that was exactly the type of answer I was hoping for, thank you. The only way I know is by research, not by personal experience. When I do my car I will certainly do only a front stage. I would like to do 6x9's but are there any "mellow" ones that are fairly inexpensive? I don't wish to open the box and waste the second set of Type X's when I can either sell them to someone who will appreciate them more or hang onto them for later. They are too deep for my own car so I have yet to decide what to do with them. Now I know that putting them on the rear deck would be a mistake and that was all I was looking for. I knew I would get a bunch of responses telling me that rear fill is a mistake but I was looking for facts based on experience, not useless opinion that does nothing to solve the problem. Thank you again.

Facts are so overated! Do what i do just wing it.

 

[themainjam 10+ year member]

http://forum.sounddomain.com/ubb/ultimatebb.php?ubb=get_topic;f=10;t=072875

check out the 6X9 but they have a high RMS //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif

on the other hand he will sell them for abotu 25 buckS!! //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[squeak9798 5,000+ posts]

For the record, I like rear fill in my car. Without it, a big car sounds hollow.

I'm going to put in my personal opinion and disagree with that //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif I've always driven "big" cars ('88 Bonneville 4-door, currently a '96 Olds LSS (Eighty-eight) 4-door), and I've never used rear-fill and never regretted it.

It also allows me to keep the volume low and still have the rear seat passengers hear the music when I have a full load of people.

That I will agree with //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif The ONLY time I really recommend rear-fill is if you have a constant stream of rear-seat passengers who you want to be able to hear the music while it's down at a conversation level. But I also recommend fading most of the way back to the front when those passengers aren't with ya.

 

[preunnerv6 10+ year member]

The the original poster:

I've run a setup without a sub before. I researched and got this as a suggestion.

Have you considered running a bandpassed rear fill? Before I got a sub, I had some front comps and bandpassed (about 100-3500 or so) STOCK 6x9's in the rear. (You could use any midbass/midrange speakers.) This gave me just a little bit more punch to the system and actually made the front sound BETTER than running the rears at full range or front comps only and no sub. At the same time, I never had a single passenger complain about the sound in the back. The bandpass was just enough to make them think they were hearing the full range, when really they were hearing the front comps and the rears were just pulling the sound together for them. It was really a win-win situation.

If I put together a system without a sub, this is my preferred setup. Only difference is that I may change the rear bandpass range or run it in mono. But it's based upon the acoustics in the vehicle. Just a thought. There are ways to get acceptable sound and output in the situation you describe.

 

[OdieTRP 10+ year member]

The the original poster:
I've run a setup without a sub before. I researched and got this as a suggestion.

Have you considered running a bandpassed rear fill? Before I got a sub, I had some front comps and bandpassed (about 100-3500 or so) STOCK 6x9's in the rear. (You could use any midbass/midrange speakers.) This gave me just a little bit more punch to the system and actually made the front sound BETTER than running the rears at full range or front comps only and no sub. At the same time, I never had a single passenger complain about the sound in the back. The bandpass was just enough to make them think they were hearing the full range, when really they were hearing the front comps and the rears were just pulling the sound together for them. It was really a win-win situation.

If I put together a system without a sub, this is my preferred setup. Only difference is that I may change the rear bandpass range or run it in mono. But it's based upon the acoustics in the vehicle. Just a thought. There are ways to get acceptable sound and output in the situation you describe.

Again thanks for the input. What is bandpassing? If I could actually work on this system myself I might try this idea because it sounds ideal. Unfortunately a local shop is doing the install. In March I'll probably have a Class D amp and sub put in; at that time I should be able to do it myself. I'm having to compromise due to lack of time and money.

 

[preunnerv6 10+ year member]

Bandbassing is sending a certain range of frequencies to a speaker. For instance, if the head unit had internal x-overs you could high-pass the rears at 100hz and then lowpass them on the amp. (EX: maybe your lowpass goes to 400hz). Then that would send about 100-400hz to the rear speakers, give or take considering the db slope.

Sometimes it can be even more effective if you wire the speakers in series, bridge the amp, and send them a mono signal. This will minimize any damage to the front stage and still give some rear fill. As I mentioned, I've done these tricks before. Rear passengers didn't notice because they were still getting most of their listening cues from the front speakers.

 

[Nitropyro666 10+ year member]

i have no real help on this except as much as ppl hate lightning audio for the price they have good sound for a while if you dont blast them at max volumes.

And just have to comment i have no clue why ppl hate rear fill ive always had a van and think that rear fil helps with midbass and sq. i listen to rock? i HATED not having rearfill!

Danny