01 SSEi Audio upgrades...

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SSEiMan01
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01 SSEi Audio upgrades...

Post by SSEiMan01 »

I was thinking about maybe doing some audio upgrades to my Bonneville in the future. I am trying to get a little bit more "power" if you will, out of my system. I would probably just upgrade the amp and speakers. I would definitely like to keep my stock headunit so I can; 1.keep my steering wheel controls 2.keep it looking stock so that nobody breaks my windows for a headunit :roll: 3.The HU I would want is out of my price range right now anyway.
So, my question is, How to go about replacing the amp, and speakers, while retaining my stock headunit. Also, any recommendations for speakers, or the amp? I'm sure the amp would have to be wired in differently than the Bose, it wouldn't just be a direct swap, correct?
Thanks in advance
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Re: 01 SSEi Audio upgrades...

Post by swampthing »

Thats gonna be a tough swap, wiring in an aftermarket amp while retaining the stock HU might be possible. But it wont be easy, check here for the wire colors and some general info on the bose system.

viewtopic.php?f=13&t=25783&hilit=+bose

I am not sure how you would go about everything, I assume you would need a line out converter or something similar to get the audio signals into an aftermarket amp
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Re: 01 SSEi Audio upgrades...

Post by tyler.avis »

I looked into doing exactly what you were thinking, and then did some hardcore research. What I found was that by just upgrading the speakers in the doors to all 2-ohm speakers; fronts are 2-ohm, rears are 4-ohm, the factory amp will have to work less to produce more sound. If you are looking for more bass like i was, simply install a line-output converter, get a powerful amp, and find yourself a nice 12 inch Type R subwoofer, and stop using the rear 6x9's completely because they are more than likely on their last leg anyway. By just adding a line output converter and you not using the factory amp to power those 6x9's you will be able to lower your bass setting to -6 to -2 for most of the time, which will allow that factory amp to have less current drawn by not having to power the 6x9's, and it will ultimately sound like a completely new system in your car for right around 300-350$ to do yourself. If you really want to have your ears tinged by some sweet high notes then replacing the speakers in the doors are definitely recommended; I have no intention to replace my headunit in the near future either, the cassete tape to 3.5mm jack adapter and my itouch also boosts the system to create a clearer sound as well. for recommendations on speakers, I've had these bookmarked for a long time now:

Front door: http://www.dealercostcaraudio.com/kappa629i.aspx
Rear Door: http://apex-audio.com/standard-speakers ... gle-simple
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Re: 01 SSEi Audio upgrades...

Post by swampthing »

Thats incorrect information, the rears are 2ohm as well on the bose. And for the record putting a 2ohm load on a system that is designed for a 4ohm load does not make the amp work less, in fact it heats up more and clipping and damage could occur
Last edited by swampthing on Thu Jul 21, 2011 9:45 pm, edited 1 time in total.
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Re: 01 SSEi Audio upgrades...

Post by tyler.avis »

swampthing wrote:Thats incorrect information, the rears are 2ohm as well on the bose. And for the record putting a 2ohm load on a system that is designed for a 4ohm load does not make the amp work less, in fact it heats up more and clipping and damage could occur
Thanks for clearing that up about the ohm's on a bose system, that's correct information; I have a monsoon.

The incorrect information you provided in an almost rude manner deals with the latter part of your comment. As far as putting 2ohm speakers on the monsoon system, have you ever heard a car with a monsoon amp that's had its door speakers replaced with 2ohm speakers? When people replace their rear deck speakers with a 4ohm speaker it doesn't sound right because the monsoon amp lacks the power to drive any 4ohm speaker to a sufficient level, which is why the stock tweeters and rear door speakers in a monsoon system are at all times less loud as the other speakers in the car. The monsoon amp puts out around 20-25 watts rms at 2ohms, so replacing any speaker that isn't 2ohms with a 2ohm speaker will instantly sound better/louder/clearer, because the monsoon performs best at 2ohms.. The monsoon system isn't designed for a 4ohm load, if it was, replacing a 2ohm speaker in the car with a 4ohm speaker would sound better, but because the monsoon is a 2ohm system, it doesn't.

The only reason clipping occurs is when you go mix the wrong impedance of a speaker to an amp, because the monsoon is more of a 2ohm system than a 4ohm, adding a 2ohm speaker will never be the cause of clipping in a monsoon amp.

And putting a 2ohm speaker actually does make the amp work less; if you added a 8ohm speaker, which would be a higher impedance than the amp is rated for, the amp has to work harder to push the load. By adding a 2ohm speaker your allowing more current to the speaker, not forcing, allowing.
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Re: 01 SSEi Audio upgrades...

Post by swampthing »

I appreciate the information, my apologies as well. I understood what you meant I just didn't want some joe blow to read that and think it was a blanket statement regarding all speakers and amps and burn something up.

I have been wanting to add the monsoon specs to my other thread but I have no access/experience with that system. I would actually appreciate it if you would help me out by posting all the monsoon info and experience you have in the bose thread. I will edit your info into my original post (giving you full credit for the monsoon specs) and then that thread will be a complete 2000+ info thread.

I would appreciate that info if you wouldn't mind

/end thread hijack (sorry OP)
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Re: 01 SSEi Audio upgrades...

Post by Bugsi »

tyler.avis wrote:The incorrect information you provided in an almost rude manner deals with the latter part of your comment.
When someone makes a correction on the forum to misinformation, try not to take it personally. In the interest of not spreading misinformation on this forum, we frequently butt in to make corrections. Again, please don't take it personally. What you've written you may know from personal experience, but you've made some generalizations that don't hold for every case, and you've made some errors. Let's clear them up.
tyler.avis wrote:…replacing any speaker that isn't 2ohms with a 2ohm speaker will instantly sound better/louder/clearer, because the monsoon performs best at 2ohms.. The monsoon system isn't designed for a 4ohm load, if it was, replacing a 2ohm speaker in the car with a 4ohm speaker would sound better, but because the monsoon is a 2ohm system, it doesn't.
You can't make a generalization that replacing an X ohm speaker with a Y ohm speaker will [always] sound better/worse or louder/quieter. Speakers have many differences among different models as there are many variables a manufacturer can play with when designing and building a speaker. A wildly more efficient 4ohm speaker will be louder than a wildly less efficient 2ohm speaker when both are driven with the same signal and amplifier. A speaker is just an active load to an amplifier. The rating of 2ohms or 4ohms is really just an average, as the actual impedance of a speaker is different at any given frequency. But if you idealize it as a static 2 ohm load -vs- a static 4 ohm load, the only thing you can say with any accuracy is that the 2 ohm load will draw twice the current from the amplifier as the 4 ohm load, if everything else remains the same.
tyler.avis wrote:The only reason clipping occurs is when you go mix the wrong impedance of a speaker to an amp, because the monsoon is more of a 2ohm system than a 4ohm, adding a 2ohm speaker will never be the cause of clipping in a monsoon amp.
This just isn't true. Amplifier clipping actually has nothing to do with the load. Clipping occurs in a [working] amplifier because you drive a signal to gain greater than the available voltage supply can produce. (That is, the combination of your source material + your volume knob setting is driving the amplifier output beyond the power supply's voltage rails.) This will even happen with no speakers connected at all, with *NO* load (which is technically an infinite load) while drawing NO current from the amplifier. It literally has nothing to do with choosing 2ohm or 4ohm speakers.
tyler.avis wrote:And putting a 2ohm speaker actually does make the amp work less; if you added a 8ohm speaker, which would be a higher impedance than the amp is rated for, the amp has to work harder to push the load. By adding a 2ohm speaker you're allowing more current to the speaker, not forcing, allowing.
Please do not take this personally, but you have some misconceptions of how amplifiers and loads work together. I can see what you're getting at, but an amplifier doesn't work in quite the way you've described. An 8 ohm load doesn't make an amplifier work harder than a 2 ohm load. I see what you're thinking, as if an 8 ohm load represents a greater resistance to be overcome, like bicycling up a steep hill, -vs- a slight incline, you'd have to work harder. But that's not how an amplifier reacts to a load. An electrical load to an amplifier causes a draw of current -a stream of electrons, if you will. All a higher impedance load does to an amplifier is draw a smaller current than a lower impedance would draw. And when it comes to amplifiers, pushing a small current is *EASY*, they can do it pretty much perpetually without any troubles. What's difficult, however, is to push a large current. A low impedance causes an amplifier to push a large current. Pushing a large current can pose a significant stress to the electronic components of an amplifier. Pushing large currents produces lots of heat in driver transistors or mosfets. A well-designed amplifier has enough heatsinking capability, component quality, and build quality to deal with the heat produced when pushing large currents within the design limitations, but it is often trivial to exceed the design limitations and have something fail. Using a *lower* impedance load than an amplifier is designed for can cause an amp to blow pretty quickly. Using a *higher* impedance load will basically *never* blow an amplifier.

Now with respect to the Monsoon amp, using "higher impedance [speakers] than the amp is rated for" would pretty much pose no risk, threat, or stress to the amplifier at all. As to whether the sound you'd get would be better or worse using higher impedance speakers than stock, it would depend entirely on the particular speaker being used, and the only way you'll know for certain if a given speaker sounds better or worse is to try it. Again, you can't say that it would be louder or not, because speakers can vary wildly in efficiency from one model to another.

Considering that one generalization you *can* make with car speakers is that it's pretty trivial to find better aftermarket speakers than almost any stock speaker, it may be *well* worth the effort to try various speakers with a Bonneville's stock Monsoon head unit, and I'd hate to discourage people from doing that based on an impedance rating alone.
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Re: 01 SSEi Audio upgrades...

Post by Bugsi »

@Tyler: Just for the record, I really like the advice you gave regarding your upgrades with speakers, line output converter, and sub. I agree completely that your recommendations should give a lot of bang for the buck and dramatically improved sound. Please don't take my information about amplifiers & loads as a personal insult or attack. We're not like that around here, we just want to make sure we propagate accurate information. Your recommendation on upgrading the stock system is excellent.
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Re: 01 SSEi Audio upgrades...

Post by tyler.avis »

Bugsi wrote:@Tyler:
No offense taken at all. I had a general idea as to how I thought amplifiers worked and a little bit of understanding as to how the monsoon system worked. The information you provided is information that completely makes sense to me now, and I personally thank you for that. The reason why I join forums is to provide the largest breath of knowledge to myself as I possibly can, and I never cease to quit learning.
:beerchug:
@swampthing- I'll try to come up with as much info as I can, but from what I'm reading about the bose system there are quite a few similarities. I'd also like to apologize for stepping on your toes; have to hate being sleep deprived.
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