AHAH!!! 2 subs @ 3ohms wired to 2 chan individually= 2 subs wired together @ 6ohms to a bridged amp
same result!!
Sorry 97f250 I didn't think I was getting technical by not getting technical and just saying a bridged amp would see half the subs total impeadance. Couldn't think of another way than to just state the final answer. How about, wire your subs and calculate the final impeadance, if you wire this to the amp useing the left positive terminal and the right negative terminal this will cause the amp torunfinsdfgkjktechjvjdndtechjsdjblahjnjnjnjmorete chsdjbnnbevenmoretechsj.blahblahknsnj and is half the calculated impeadence. That should clear things up
Brewdude stick with your amp wire the 2 subs the way you show on your diagram to the amp in bridged mono fashion and enjoy
As far as my knowledge of that amp I designed and built an spl car using 2 of those amps and 2 rockford dvc subs in dual dual reflex bandpass boxes tuned to 50hz. I used a 220amp alternator w/outboard rectifier and adj regulator set at 15.2 volts. I used the first 2 prototype 16v battcaps they made specifically for that setup which is now a regular available piece. I also used a rockford 2x xover with 15bd boost 49hzhighpass cards and a westco svr battery. The subs were wired 2 ohms each and wired bridged to each amp with the impeadance of 1.78ohms@50hz. The resonant frequency of this stock interior fullsize bonneville was 50hz which I calculated with the use of termpro. The amp watt output measured on a burp was 1400 watts each drawing a total of 197 amps of power. He was the points champion for the season 1999 and took 3rd at world finals. The car hit a high of 149.9 and was consistent 147+ every weekend. Only replaced subs twice in the season and never had an amp failure. So yeh I guess you could say I've spent some time with those amps.

 

If he has 2 amps...I say throw an amp on each sub and call it a day!

I think if we didn't confuse him before, we have now!!!! lol

 

Like bartak1 said "just doing what we can"

 

Yep...kinda why I didn't post earlier. lol

 

Ahhhhhhhhhhhhhhhh...Thanks man. It's all so clear now



I'm really not this retarded. But this part always confuses me. So I think I'm gonna stick to wiring them up like the picture I posted and hope they sound good. I'll let you guys know after this weekend.

Thanks again guys.

Hmm, so BRY..did I take your advice this time or not

BART..thanks bro. On the ball as always


BREW

 

[QUOTE=nothinbutaford]AHAH!!! 2 subs @ 3ohms wired to 2 chan individually= 2 subs wired together @ 6ohms to a bridged amp
same result!!
Sorry 97f250 I didn't think I was getting technical by not getting technical and just saying a bridged amp would see half the subs total impeadance. Couldn't think of another way than to just state the final answer. How about, wire your subs and calculate the final impeadance, if you wire this to the amp useing the left positive terminal and the right negative terminal this will cause the amp torunfinsdfgkjktechjvjdndtechjsdjblahjnjnjnjmorete chsdjbnnbevenmoretechsj.blahblahknsnj and is half the calculated impeadence. That should clear things up


Yea, I'm a stickler for things like that. I've heard people say that for 25-30 years, this business about the amp "sees" half the impedance of the set-up. That's a crock. If a set up is 6 ohms, it's 6 ohms. You cannot connect the amp in any fashion that will change that so that the amp is "seeing" anything else but 6 ohms. That's my point. With the obvious amount of experience and knowledge you have, I'm suggesting that you just explain fully what is happening, especially to someone who admittedly does not know this kind of thing. That kind of explanantion will help that person gain some knowledge. With the explanation you offered, they may end up thinking something that is totally wrong, and confuses them even more. As most people probably have figured out about me, I think if someone is going to offer advice and/or recommendations on this forum, then they should know what they are talking about, first of all, and then say what they have to say properly. It's all fine and dandy that you have built competitive vehicles and you have all this knowledge, but that does BREWDUDE no good in his effort to learn.

I'll stop now so I don't get reprimanded for one of my long drawn out posts, but would offer the following link to BREWDUDE to do some reading. Read section #51 for a good explanation of this situation, but eventually read it all, that is, IF you want to learn.



http://www.bcae1.com/

 

It doesn't matter...all that matters to me is you understand it and know how YOU want to do it. If I was any help with that...then great! If not, then I'm sorry.
Just get it hooked up and start enjoying the your system!!!!

 

You know I was kidding right?? Thats what the " " meant. I was reffering to the other post where you commented about nobody taking your advice.



BREW

 

Yes...I know. Its all good!!!

 

After the CD's you did for me way back when, its the least I could do

 

Brewdude and others save yourself the time in reading that technogarble on that website. Ask me a simple question I will give you an answer that works. I won't try to impress you with a bunch of overthought overwritten stuff that someone has on the internet. I will just try to supply you with stuff that works, in simple terms. If the answer is too simplified just tell me to ellaborate. The terms and phrases that I use have been taught to me over the last 18+ years of working in this buisiness by TOP professionals in the industry. I have used them to bring my customers to any level of enjoyment and/or competition, including magazine and world finals recognition, they wanted.

 

Simple is the only way to go. Sometimes I even confuse myself when I try to explain something.

 

You have got to be kidding; "technogarble". I would like for you to point out one comment from that site that is "overthought and overwritten". If you think that, then that is an indication of your grasp of things. As far as "supplying" someone with stuff that works, in simple terms, how about just explaining something correctly, instead of saying something like "an amp sees half the impedance when bridged". That is WRONG, period. It doesn't matter if Richard Clark has been your mentor, that is still wrong. And if you think the explanation on bcae1.com as to how the amp really functions when bridged is "overthought and overwritten", then again, that's an indication of your grasp of things. It doesn't matter if you've done 5000 installations with prototype gear and brought enjoyment to people all over the globe, if you can't explain something correctly, just admit it. I'm sure you are good at what you do, but this ain't about that. And you may not be trying to impress people with your explanations, but you ARE trying to impress people with other little tidbits.

 

97f250 I was not refering to the website as overthought and overwritten, I was refering to your comments on my posts everytime I try to give someone information to help them out. Reading some of the info on that site infact reinforces some of the statements I had made in the past that you have tried, for whatever reason, to say were incorrect. I get tired having to over explain simple advise to simple questions because you jump in and have to talk like a big shot. The fact of the matter is brewdude had a question about an amp I have vast knowledge of, and gave him advice I knew would work. I tried to keep it simple without going into what effect impeadence has on rail voltage, and just gave him an answer. Since you seem to be so smart and have all the answers, I'm suprised I don't see you being the first to reply on everyones thread. As far as tidbits I don't see you offering any more than refering to someone elses website for your marvelous words of wisdom.

 

The reason why people say the amp sees half the impeadance when bridged is because most 2 channel amps are said to be 2 ohm stable. While that is true it is also usually stated somewhere in the spec sheet as 2 ohm stable-yes, with no other info or guidelines given. When you run an amp bridged mono with a 4 ohm load the 2 channels are driven at the same point as they would if each channel had a 2 ohm load. The amp is running like it had an overall 2 ohm load. If you ran the amp bridged mono with a 6 ohm load each channel would be driven as if each one had a 3 ohm load, and so on. That is why is has always been said that a 2 channel amp sees half the impeadance of the speaker load, simply to keep customers from overloading their equipment.