Stereo Specs
#1
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Unless I overlooked them I didn't see any specs on any of the available stereos in the XJ8. What I'm looking for is the specs on the Alpine system. Wattage, output, inputs and ohms. Any ideas where to start?
What would be even better is a comparison between the Alpine and HK.
Thanks again.
What would be even better is a comparison between the Alpine and HK.
Thanks again.
#2
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To cut a long story short... it's all very poor.
Speakers are generic 4 ohm, as per industry standard, factory headunit probably makes all of 20wrms total, and the HK system is about as powerful as a generic aftermarket headunit, the amp only makes about 18wrms per channel, possibly a bit more for the sub channels, as the sub is a dual voice coil unit, 2ohm per coil, so you might get 30-35wrms per channel?
Real question is, why are you asking, and what do you hope to achieve?
Speakers are generic 4 ohm, as per industry standard, factory headunit probably makes all of 20wrms total, and the HK system is about as powerful as a generic aftermarket headunit, the amp only makes about 18wrms per channel, possibly a bit more for the sub channels, as the sub is a dual voice coil unit, 2ohm per coil, so you might get 30-35wrms per channel?
Real question is, why are you asking, and what do you hope to achieve?
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someguywithajag (12-23-2020)
#3
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Hi
Do not forget about the SPL of the speakers. If the speakers has more than 91dB 20W it is enough a simple calculation at 1W you have 91dB at 20w you will have about 104dB in the car. If the speakers has less then 87dB you will have less SPL in the car. every 3dB SPL double the power.
In sound reproduction it is all about SPL not power.
I have regular sound system and i am satisfied.
Do not forget about the SPL of the speakers. If the speakers has more than 91dB 20W it is enough a simple calculation at 1W you have 91dB at 20w you will have about 104dB in the car. If the speakers has less then 87dB you will have less SPL in the car. every 3dB SPL double the power.
In sound reproduction it is all about SPL not power.
I have regular sound system and i am satisfied.
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bdboyle (03-08-2015),
someguywithajag (12-23-2020)
#4
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To cut a long story short... it's all very poor.
Speakers are generic 4 ohm, as per industry standard, factory headunit probably makes all of 20wrms total, and the HK system is about as powerful as a generic aftermarket headunit, the amp only makes about 18wrms per channel, possibly a bit more for the sub channels, as the sub is a dual voice coil unit, 2ohm per coil, so you might get 30-35wrms per channel?
Real question is, why are you asking, and what do you hope to achieve?
Speakers are generic 4 ohm, as per industry standard, factory headunit probably makes all of 20wrms total, and the HK system is about as powerful as a generic aftermarket headunit, the amp only makes about 18wrms per channel, possibly a bit more for the sub channels, as the sub is a dual voice coil unit, 2ohm per coil, so you might get 30-35wrms per channel?
Real question is, why are you asking, and what do you hope to achieve?
For me the Alpine in my 01 XJR sound very good and was advertised at 320 watts.
#5
#6
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Maybe 320watts PMPO
Please read this if you want to learn something
Audio power - Wikipedia, the free encyclopedia
#7
![Default](/forum/images/icons/icon1.gif)
To cut a long story short... it's all very poor.
Speakers are generic 4 ohm, as per industry standard, factory headunit probably makes all of 20wrms total, and the HK system is about as powerful as a generic aftermarket headunit, the amp only makes about 18wrms per channel, possibly a bit more for the sub channels, as the sub is a dual voice coil unit, 2ohm per coil, so you might get 30-35wrms per channel?
Real question is, why are you asking, and what do you hope to achieve?
Speakers are generic 4 ohm, as per industry standard, factory headunit probably makes all of 20wrms total, and the HK system is about as powerful as a generic aftermarket headunit, the amp only makes about 18wrms per channel, possibly a bit more for the sub channels, as the sub is a dual voice coil unit, 2ohm per coil, so you might get 30-35wrms per channel?
Real question is, why are you asking, and what do you hope to achieve?
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#8
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Sounds a little disrespectful to luc. "If you want to lean something". Well as YOU know sound is always subjective. What sounds good to you might sound like crap to someone else. Does that make them wrong? No it means they have different taste in sounds. To put someone down because they like the sound of their system??? So maybe it's not 320 watts. Does that really matter? Seem
ed a little off to me...
ed a little off to me...
#9
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Well I was hoping to get better quality sound. Volume is fine but the clarity and bass isn't there. Not looking for crappy thumping bass just a more solid with an edge. Replacing with newer technology and more efficient speakers should accomplish this. Always good to know what the amp rating is. However all you gave was a guess. So the Alpine system does not have an amp? All is powered by the head unit and we're assuming that it's 20 watts total? So that would be 10 watts for the F/R-L/R speakers and 10 for sub? That is why I was hoping someone had the specs.
Last edited by larney; 03-07-2015 at 10:25 AM.
#10
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If you really want to improve the sound, consider installing a proper amplifier.
You have the standard system, which makes things a little easier, you can use the existing speaker outputs from the headunit as high level inputs into a small 4 channel amp, then wire this up to the original speakers. Even a small 50wrmsx4 amp will make a night and day difference.
You still won't have proper bass, as you don't have a sub, but there are things you can do to help improve it.
The best thing will always be to run a proper sub, but most people don't want to do down this road. You could use a 6x9 in the parcel shelf, like they did with the premium setup. I don't know of many 6x9s I would consider up to the task, but I know ID (Image Dynamics) make a set that would sound fantastic.
The other option is to help your door speakers out. Even just some sound deadening on the inside of the doors will give you a noticeable difference, or look at getting speaker pods made up that mount the speakers to the actual door, rather than the (in terms of a speaker mount) flimsy door cards.
One last thing...
Don't get too caught up with speaker efficiencies and counting watts. Even if all you did was replace the old speakers with new ones, you should see an improvement
You have the standard system, which makes things a little easier, you can use the existing speaker outputs from the headunit as high level inputs into a small 4 channel amp, then wire this up to the original speakers. Even a small 50wrmsx4 amp will make a night and day difference.
You still won't have proper bass, as you don't have a sub, but there are things you can do to help improve it.
The best thing will always be to run a proper sub, but most people don't want to do down this road. You could use a 6x9 in the parcel shelf, like they did with the premium setup. I don't know of many 6x9s I would consider up to the task, but I know ID (Image Dynamics) make a set that would sound fantastic.
The other option is to help your door speakers out. Even just some sound deadening on the inside of the doors will give you a noticeable difference, or look at getting speaker pods made up that mount the speakers to the actual door, rather than the (in terms of a speaker mount) flimsy door cards.
One last thing...
Don't get too caught up with speaker efficiencies and counting watts. Even if all you did was replace the old speakers with new ones, you should see an improvement
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someguywithajag (12-23-2020)
#11
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I don't need nor want to learn anything about stereo. You guys need to read posts correctly.
Question was asked about specs for the Alpine System.
Jaguar rate/advertise it as 320 watts.
Therefore my answer.
Same thing is someone was asking for the HP rating of the XJR.
Jaguar rate it at 370 hp.
Obviously there are many ways to calculate power, being for a stereo or an engine.
Brake horsepower, SAE, horsepower, DIN horsepower, RWHP ( rear wheel hp) etc.
And yes, I do like the alpine system in my XJR.
taste and opinion are very personal and that apply to music
Question was asked about specs for the Alpine System.
Jaguar rate/advertise it as 320 watts.
Therefore my answer.
Same thing is someone was asking for the HP rating of the XJR.
Jaguar rate it at 370 hp.
Obviously there are many ways to calculate power, being for a stereo or an engine.
Brake horsepower, SAE, horsepower, DIN horsepower, RWHP ( rear wheel hp) etc.
And yes, I do like the alpine system in my XJR.
taste and opinion are very personal and that apply to music
#12
![Default](/forum/images/icons/icon1.gif)
I don't need nor want to learn anything about stereo. You guys need to read posts correctly.
Question was asked about specs for the Alpine System.
Jaguar rate/advertise it as 320 watts.
Therefore my answer.
Same thing is someone was asking for the HP rating of the XJR.
Jaguar rate it at 370 hp.
Obviously there are many ways to calculate power, being for a stereo or an engine.
Brake horsepower, SAE, horsepower, DIN horsepower, RWHP ( rear wheel hp) etc.
And yes, I do like the alpine system in my XJR.
taste and opinion are very personal and that apply to music
Question was asked about specs for the Alpine System.
Jaguar rate/advertise it as 320 watts.
Therefore my answer.
Same thing is someone was asking for the HP rating of the XJR.
Jaguar rate it at 370 hp.
Obviously there are many ways to calculate power, being for a stereo or an engine.
Brake horsepower, SAE, horsepower, DIN horsepower, RWHP ( rear wheel hp) etc.
And yes, I do like the alpine system in my XJR.
taste and opinion are very personal and that apply to music
Luc, I don't mean to be beligerant, but I just come across many subjects in life where people assure that "taste and opinion are very personal and that apply to music"... Really? Only to a certain extent, at best. If someone tells me that there's a SINGLE piece of rap that comes close to "Beethoven's 9th", or to Chopin's "Ballad in G minor" or to most pop music that actually contains a melody, as in music, I'd say "OK, let's listen to it, I'm dying to hear it".
Cheers,
Last edited by Forcedair1; 03-08-2015 at 06:54 PM. Reason: mis spelling
#13
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If you really want to improve the sound, consider installing a proper amplifier.
You have the standard system, which makes things a little easier, you can use the existing speaker outputs from the headunit as high level inputs into a small 4 channel amp, then wire this up to the original speakers. Even a small 50wrmsx4 amp will make a night and day difference.
You still won't have proper bass, as you don't have a sub, but there are things you can do to help improve it.
The best thing will always be to run a proper sub, but most people don't want to do down this road. You could use a 6x9 in the parcel shelf, like they did with the premium setup. I don't know of many 6x9s I would consider up to the task, but I know ID (Image Dynamics) make a set that would sound fantastic.
The other option is to help your door speakers out. Even just some sound deadening on the inside of the doors will give you a noticeable difference, or look at getting speaker pods made up that mount the speakers to the actual door, rather than the (in terms of a speaker mount) flimsy door cards.
One last thing...
Don't get too caught up with speaker efficiencies and counting watts. Even if all you did was replace the old speakers with new ones, you should see an improvement
You have the standard system, which makes things a little easier, you can use the existing speaker outputs from the headunit as high level inputs into a small 4 channel amp, then wire this up to the original speakers. Even a small 50wrmsx4 amp will make a night and day difference.
You still won't have proper bass, as you don't have a sub, but there are things you can do to help improve it.
The best thing will always be to run a proper sub, but most people don't want to do down this road. You could use a 6x9 in the parcel shelf, like they did with the premium setup. I don't know of many 6x9s I would consider up to the task, but I know ID (Image Dynamics) make a set that would sound fantastic.
The other option is to help your door speakers out. Even just some sound deadening on the inside of the doors will give you a noticeable difference, or look at getting speaker pods made up that mount the speakers to the actual door, rather than the (in terms of a speaker mount) flimsy door cards.
One last thing...
Don't get too caught up with speaker efficiencies and counting watts. Even if all you did was replace the old speakers with new ones, you should see an improvement
Even the modest 10" sealed enclosure Kicker subwoofer, currently in the trunk of my XJR (see gallery), works beautiful with low-low frequencies, even when the only sound passage to the cabin is the 6x9 "void" left by you-know-who in the parcel shelf. It is a 400wrms driver driven by a 350wrms Kicker amp. Total I believe less than $400.00.
Cheers,
Cheers,
#14
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I feel like I should apologize a little... but talk about music and stereos and 'personal taste' really grinds my gears.
For a collective group of people who drive high end vehicles, and generally appreciate the finer things in life, it amazes me that we put up with such poor stereos.
When you compare an old CRT TV to a new ultra hi-def screen, there is a very obvious improvement in quality. Good music is the same. You may be used to something blurry and fuzzy and think it's ok, but once you've heard a proper high end system, you'll know the difference.
Unfortunately with sound it's not as easy to put it in numbers. Even watts and sensitivity measurements won't tell you whether a system has been tuned correctly, has peaks and troughs, flat spots and correct phasing, let alone a decent flat response.
Fortunately car manufacturers are taking a lot more care in these areas now, and properly working with audio engineers to integrate the stereo right back in the design stages. Go and sit in a new Jag, Merc, Audi etc and the quality is amazing. FYI some of those stereos comfortably rate in the thousands of watts. Sadly peak figures still sound far more impressive on a spec sheet than actual rms ratings, but it's a step in the right direction at least.
For a collective group of people who drive high end vehicles, and generally appreciate the finer things in life, it amazes me that we put up with such poor stereos.
When you compare an old CRT TV to a new ultra hi-def screen, there is a very obvious improvement in quality. Good music is the same. You may be used to something blurry and fuzzy and think it's ok, but once you've heard a proper high end system, you'll know the difference.
Unfortunately with sound it's not as easy to put it in numbers. Even watts and sensitivity measurements won't tell you whether a system has been tuned correctly, has peaks and troughs, flat spots and correct phasing, let alone a decent flat response.
Fortunately car manufacturers are taking a lot more care in these areas now, and properly working with audio engineers to integrate the stereo right back in the design stages. Go and sit in a new Jag, Merc, Audi etc and the quality is amazing. FYI some of those stereos comfortably rate in the thousands of watts. Sadly peak figures still sound far more impressive on a spec sheet than actual rms ratings, but it's a step in the right direction at least.
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