Best set up for stuff like...

[Greg72]

Scooter,

It's not so much that I love the old stuff....I just kinda lost track of what was "hot" when I stopped being around it everyday. I know that companies like Alpine kinda went the "cheap route" on their products after building flagship products like the 7909 (great showpiece product, but I doubt they made much $$$ on it!)...and started using their reputation to sell LOTS of lower quality mass-produced stuff.

I think that same thing has happened to some other audio companies as well.....a/d/s was bought out by Orion....and I don't think they've been building TANKS like the old PQ20 for a long time. Thankfully there's a place like e-Bay where I can still get the stuff I really WANT.

Just my $.02

-Greg72

'72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
<font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>

 

[Scooter]

I agree completely. If it wasnt for the fact that I still go get the CA&amp;E annual directory I wouldnt have any idea what was "new and hot". Back about 5-6 years ago was the last time is was actively involved in installs and knowing what new components are there. I stil do some of my own little stuff but nothing really major (but looking at your set up has already got me thinking again - LOL).
I think that a lot of the companies began using their reputation to pad the bottom line with lower quality stuff. I'm sure there have been numerous upgrades to the available products but to be honest I'd still take my "old" Punch 75HD over any of the newer RF amps.

Scot in KC, MO
87 GMC - 4", 33s, 3.73 10B/14SF
http://community.webshots.com/user/sdb95

 

[ftn96]

Greg I have the 10wO's, or will have. I would like to put a 6 or 6.5 in each door and then the same in the side panels for the rear seat and then 2 subs in the rear. Is there one amp I could use for all 6 speakers. Could I get a 4 channel and bridge the 2 passy side 6" inchers on one channel, then bridge the other 2 6's for the other side and then have the subs in stereo or bridged in the rear? I have also heard that the subs do not need to be facing each other. Is this true? I always thought you could wire the speackers to where they hit at opposite times so you could avoid having them beat each others face in. The do this some how with guitar or PA system cabinets some how. Would something like this work? Whats a good list of "inexpensive" items for all this setup? Im getting ready to hit the pawn shops for amps and speakers?

Still hoping the GOV'T will ban the use of loud stereos with RAP music.

<a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>

 

[Greg72]

It's kinda asking a lot for a single amp to drive two subwoofers AND 4 satellite speakers....BUT if money's tight then "you gotta do what you gotta do!"

Let's say for simplicity's sake you find an amp with 100W x 4. You can take two of those channels and drive your subs (100W each) and that leaves two more 100W channels for the other 4 speakers. Depending on the amp and speakers you may be able to wire them in parallel (RF and RR speaker on one channel, LF and LR speaker on the other) the key is not to create a load that is too low for the amp to handle (I'm talking Ohms here) If your amp is 2 ohm stable, and your speakers have a nominal resistance of 4 ohms each.....you're probably going to be OK.

What I worry about is that the rear speakers will be too LOUD relative to the front speakers. If you configure the amp this way, you will NOT be able to use the fader on your deck to quiet the rear speakers down. You may have to use an "in-line resistor" (a low value Ohm-wise, but a high wattage one) to reduce the output of those rears. It's a little goofy, but it would work.....I had to do it once on my own system so I know that it does work.

On to the subs.... the name of the game is "sound pressure" if the two speakers are playing "in phase" with each other, they are both compressing the air inside your truck at the same moment. That gives you MORE pressure.....that's good. If you deliberately wire one of the subs to play out-of-phase, then every time one is pressurizing, the other one is "sucking air in" creating an equally powerful vaccuum in the truck.....believe it or not, the result is that you'll barely hear any bass at ALL!!!!

The debate over whether subs should be run in mono vs stereo is endless....I've always run mine in stereo and have been very happy with it. I suppose you could wire it up both ways and compare, but it's probably not going to be something you'll be able to detect sonically.

Anyway, that's all I can think of for now. If you need some specific wiring diagrams to show what I mean for those satellite speakers....let me know. I can probably send you something offline that would be clearer.



-Greg72

'72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
<font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>

 

[ftn96]

Aguy yesterday told me that he may be able to get me a 4 channel x 125 watts. And I dont really mind the extra volume coming from the rear as long the speackers can handle it. I wont be running any crossovers, but I can use the in line resistor deal. I can get those from my local sound shop couldn't I or is that a specialty thing I will have to get through some place like a better than radio shack kinda place?

Still hoping the GOV'T will ban the use of loud stereos with RAP music.

<a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>

 

[Greg72]

FTN,

You will be running at least ONE crossover......you've got to split the frequencies to keep the high frequency stuff out of the subs, and the really LOW frequency stuff out of the satellite speakers! It may be "built-in" to the amp you get, but it's still got to be in your system somewhere.

Those resistors should be available at Radio Shack. You'll have to experiment with the exact resistance needed to create the right F/R balance, but you just want something with a high enough wattage rating that it won't melt when you run your amp through it. I wish I could remember the rating of the ones I used.....I remember the physical dimensions were something like 1/2" x 1/2" x 3". At the time I was running 50W/channel into the speakers and that one worked fine. It might just be as simple as buying one that matches the RMS wattage value of the amp.....although that's probably overkill and more $$$.

It's going to depend on the ohm load that you create by pairing up those speakers on a single channel, what their ohm rating is, and how much of a resistor you add. Once you have an "overall" value in ohms, you can calculate what the amplifier power output will be driving that load. If you create an 8 ohm load, then your 125 watt amp will only be putting out maybe 75 watts.... It's not a linear relationship between output power and resistance, but you get the idea.









-Greg72

'72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
<font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>

 

[ftn96]

Well, I have since been digging around and have decided to run a 100x2 channel amp for the subs, then have a 4x50 amp for the 4 front speakers. Now, I know how to hook all this up but my question is do I need to get amps with crossovers built in, so that is will take the highs out of the subs and then have a hi/mid pass on the fronts?

The biggest 2 questiosn I have are: What size speakers can I fit in the bottom of the doors with out major clearance problems?
#2, Do I need to make sure that my subs are not pointing at one another?

Still hoping the GOV'T will ban the use of loud stereos with RAP music.

<a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>

 

[Greg72]

If you are running two amps, you'll want to split the signal (lows / highs) further up the signal chain. Someone mentioned that there is an in-dash CD player that has a crossover built in....that would be one way....or buy a simple 2-Way electronic crossover. Send the signals from the deck to the crossover, and then the 'split' signals can be run to each of the amps.

The subs can point any direction you want....it will not make any difference. Just be sure to wire them "in-phase" with each other....as I mentioned earlier. Then you will be all set.

You're on your own for the door speaker clearances. I have no idea....pull a door panel and see what you've got inside there. Be sure to check with the window UP &amp; DOWN to make sure that you don't block any of the mechanisms with your speaker placement.



-Greg72

'72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
<font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>

 

[ftn96]

Ok, to make this simple-er is there a 4 channel amp that will send the lows out one set of channels and the highs out the other set of channels?
And is there a set of 6x9's out there that can handle the same amount of watts that would be getting sent to the 10's.
Ie runninf 2 6x9's and 2 10's on the same amp.

Still hoping the GOV'T will ban the use of loud stereos with RAP music.

<a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>

 

[Greg72]

Ugh!

You are making this too complicated! You don't want to put other full range speakers on the same channels as the subs.

You can use a single 4-channel amp to run everything if you want (as I said before) but you run the 4 satellite speakers (5" round, 6" round, 6x9" it doesn't matter) off the same pair of amplifier outputs.

If you want subs in your system, you've got to add a crossover somewhere PERIOD. Either use the deck suggested by Krazie eariler in this thread (Easiest) or buy a separate one.



-Greg72

'72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
<font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>