Which is noisier inside, coupe or spyder? - Alfa Romeo 4C Forums
 9Likes
Reply
 
LinkBack Thread Tools
post #1 of 11 (permalink) Old 04-17-2017, 11:25 AM Thread Starter
Junior Member
 
Join Date: Apr 2017
Posts: 5
Which is noisier inside, coupe or spyder?

I'm getting old and prefer less noisy cars. I just sold a Lotus and had a Cayman S before that, both were noisy on the highway. I drove a friend's Boxster and it was quieter on the highway than my Cayman and I just drove a 4C spyder that surprised me on how much quieter it was than my lotus with the hardtop. My theory on the Cayman being noisy is that the top reflects engine noise right to the driver and passengers' heads while the Boxster's soft top allows the sound to go through or deadens it somehow. I have not driven the 4C coupe but prefer their looks to the spyder. So the question is: who has driven both the coupe and the spyder and which is quieter?
Yellow Tulip is offline  
post #2 of 11 (permalink) Old 04-17-2017, 12:55 PM
Super Moderator
 
4Canada's Avatar
 
Join Date: Jul 2014
Posts: 7,416
Garage
I always thought that the order (from loud to soft) was (all measurements taken inside the device):

1. a nuclear detonation.
2. a scram-jet engine.
3. Pagani V12 engine
4. 4C turbocharger.
5. 4C engine.
6. Ferrari V12 engine
8. a blender.
9. 4C Spider cabin with roof off.
10. 4C Spider cabin with roof on.
11. tumble-dryer full of rocks.
12. 4C coupe cabin.
13. aircraft carrier flight deck.
...
4,986. eiderdown pillow.
4,987 Cayman interior.
4,988 coffin.

But I could be wrong.


There are a few people who have driven both enough to be able to give you an honest answer (perhaps even a serious one).

Be aware of an harmonic "drone" with the racing exhaust at around 75 to 80 MPH on level roads in 6th gear with the engine at around 2,500RPM. Not everyone has experienced it, but those that have will tell you that it can be ear-splitting. There are fixes ranging from selling the car to shifting down to another rev range, to a Helmholz chamber exhaust, to avoiding those speeds for any duration. There are several threads dedicated to that, including two current ones where people are doing projects to fix the situation themselves.

Beyond that, the car isn't all that bad considering that it is a street legal racer where NVH didn't likely even make the top 1,000 on a list of design considerations.

Count Biscione.
Respect the Snake

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
4Canada is offline  
post #3 of 11 (permalink) Old 04-17-2017, 01:50 PM
Senior Member
 
Join Date: Jan 2016
Posts: 218
If you sold your Cayman and Lotus due to noise stay away from all of the 4c's. It is loud. It drones badly at highway speeds and the stereo doesn't help make things better.

2015 Alfa Romeo Spider
2011 Lotus Evora
2009 Nissan Cube
James33 is offline  
 
post #4 of 11 (permalink) Old 04-17-2017, 01:50 PM Thread Starter
Junior Member
 
Join Date: Apr 2017
Posts: 5
4Canada, I love your humor in the decible ratings applied to various noise locations, especially the tumbler-dryer full of rocks compared to a spyder cabin and the Cayman interior to a coffin. I know it is not intuitive that a Cayman can be compared to a 4C for quiet but I did an almost back to back comparison with a Cayman R and the 4C spyder. Excluding the exhaust noise, the road noise in the spyder felt lower than that of the R and my own Cayman. I could carry on a conversation at highway speed on a rough road in the 4C but it was difficult in the R. I could not comfortably listen to the radio in my 06 Cayman S, even with ear buds.
Yellow Tulip is offline  
post #5 of 11 (permalink) Old 04-17-2017, 02:59 PM
Member
 
RYUK's Avatar
 
Join Date: Apr 2017
Posts: 49
Garage
I have zero experience with the Alfa Coupe, but with the Kappa Platform, the Pontiac solstice came in a coupe form for the last year of production and something about the hard top caught and reverberated the noise in the interior. It was much louder than the convertible soft top

RYUK

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
RYUK is offline  
post #6 of 11 (permalink) Old 04-17-2017, 05:50 PM
Senior Member
 
Alfanut's Avatar
 
Join Date: Mar 2015
Location: Sydney, Australia
Posts: 871
Unhappy

Quote:
Originally Posted by 4Canada View Post
I always thought that the order (from loud to soft) was (all measurements taken inside the device):

1. a nuclear detonation.
2. a scram-jet engine.
3. Pagani V12 engine
4. 4C turbocharger.
5. 4C engine.
6. Ferrari V12 engine
8. a blender.
9. 4C Spider cabin with roof off.
10. 4C Spider cabin with roof on.
11. tumble-dryer full of rocks.
12. 4C coupe cabin.
13. aircraft carrier flight deck.
...
4,986. eiderdown pillow.
4,987 Cayman interior.
4,988 coffin.

But I could be wrong.


There are a few people who have driven both enough to be able to give you an honest answer (perhaps even a serious one).

Be aware of an harmonic "drone" with the racing exhaust at around 75 to 80 MPH on level roads in 6th gear with the engine at around 2,500RPM. Not everyone has experienced it, but those that have will tell you that it can be ear-splitting. There are fixes ranging from selling the car to shifting down to another rev range, to a Helmholz chamber exhaust, to avoiding those speeds for any duration. There are several threads dedicated to that, including two current ones where people are doing projects to fix the situation themselves.

Beyond that, the car isn't all that bad considering that it is a street legal racer where NVH didn't likely even make the top 1,000 on a list of design considerations.
Where do you rate those infernal leaf blowers early on a Sunday morning? Gotta be up there with scram jets.
4Canada likes this.

Last edited by Alfanut; 04-17-2017 at 05:53 PM.
Alfanut is online now  
post #7 of 11 (permalink) Old 04-17-2017, 11:02 PM
ROL
Junior Member
 
Join Date: Dec 2016
Location: Luxembourg
Posts: 2
Send a message via Skype™ to ROL
Absolutily right �� And that's how it should be ...
ROL is offline  
post #8 of 11 (permalink) Old 04-18-2017, 04:41 AM
Senior Member
 
Join Date: Feb 2014
Location: Australia
Posts: 118
I have the standard exhaust. It's noisy inside but It's never felt like " it's too much". I do long drives on weekends sometimes up to six hours in a single day. I don't have drone at any speed.

With regards to the stereo I have the Alpine unit and the four speaker sound system (this comes as standard in Australia). I can certainly listen to music and still carry on a conversation inside the car.
Pers is offline  
post #9 of 11 (permalink) Old 04-18-2017, 05:55 AM
Junior Member
 
Join Date: Apr 2017
Posts: 2
Does Akropovic exhaust make it any better?
dansax is offline  
post #10 of 11 (permalink) Old 04-18-2017, 07:59 AM
Senior Member
 
tsubus's Avatar
 
Join Date: Dec 2016
Location: Switzerland
Posts: 227
Quote:
Originally Posted by dansax View Post
Does Akropovic exhaust make it any better?
Define "better". To me better is louder. If you mean quieter, it does make it quieter while driving in N or A. I have not personally tried, but it's been said before in the forum. I'm sure you can find it with a quick search.

Alfa Romeo MiTo QV || Alfa Romeo 4C Coupe LE
tsubus is offline  
Reply

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
2017 Alfa Romeo - 4C Coupe Gale Introductions 33 04-24-2017 04:48 PM
EVO's Alfa Romeo 4C Spider review Haha Alfa Romeo 4C Reviews 8 02-28-2017 09:30 AM
Coupe vs Convertible, anyone has experience with both? lamborarri Alfa Romeo 4C General Discussion 23 03-02-2016 11:06 AM
Coupe or Spider- pricing and wait times Ivanivnk Australia, New Zealand, and Asia Pacific 5 01-14-2016 09:56 AM
Alfa Red Spider vs Coupe..side by side images. 4C-458 Alfa Romeo 4C General Discussion 11 10-07-2015 09:44 AM

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome