Rear speakers - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

 9Likes
Reply
 
LinkBack Thread Tools
#1 Old 12-05-2012
Registered Users
 
Naffdave's Avatar
 
Join Date: Nov 2012
Location: Preesall
Vehicle: 2005 SLK 280 7 Speed Tiptronic In Silver
Other Toys: NSM Sattilite Jukebox
Posts: 595
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Thanks: 89
Thanked 13 Times in 13 Posts
Garage
Send a message via Yahoo to Naffdave
(Thread Starter)
Rear speakers

Hi i have a 1999 230k auto with stock front speakers only fitted was wondering how easy is it to fit some extra rear speakers. I have already got a Sony Xplod head unit in the car but need more sound is it easy to fit rear speakers ?

Dave
Naffdave is offline  
Sponsored Links
Advertisement
 
#2 Old 12-05-2012
PMB
Registered Users
 
Join Date: Feb 2012
Vehicle: SLK320
Other Toys: 2006 Mini Cooper, 1981 Yamaha RD250LC, 1996 Suzuki Bandit 600, Motobecane AV92 (being restored).
Posts: 81
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 9
Thanked 9 Times in 9 Posts
Garage
It is possible but quite long winded to fit rear speakers. There are places for them but only for the Bose subwoofers supplied with the upgrade. If you do a search there are several threads, some with pictures that may help.

Myself, I plan on putting some subs in the back at some point, but with my current Sony head unit and Focal 165V30 speakers (lots of Dynamat on the door) there is no rush. Plenty of bass, a good soundstage and fantastic clarity - I don't really beed any more (for the moment). I am just enjoying it for now.
PMB is offline  
#3 Old 12-05-2012
Moderator
 
curro101's Avatar
 
Join Date: May 2010
Location: Madrid-Spin
Vehicle: Slk 200K 2004 r171
Other Toys: Toyota C-HR Hybrid
Posts: 10,744
Country:
Chats: 0
Mentioned: 109 Post(s)
Tagged: 0 Thread(s)
Quoted: 528 Post(s)
Thanks: 1,500
Thanked 1,297 Times in 1,138 Posts
Garage
When I had my r170 I installed some speakers in the rear in a relatively easy way ! If you do a search you'll find images of the spaces underneath the carpets behind the seats . All I did was introduce the wiring into the radio connectors and run it past the gear shift into the centre console and from there down and behind the carpet to the desired aera on each side . There are a couple tutorials about which go along the line of removing all the carpet and installing wooden suplements etc to fix the speakers to , but I just did he following :
Find the place where the speaker spaces are in the bulkhead and then cut a hole in the carpet the size of the ( normal round ) speakers , slightly smaller than the inside measurement of the screw holes of the speakers ( logic will dictate the size of the hole when you look at the speakers ) . Then placing the usual metal bits used to hold speakers in place , behind the carpet and the speaker in front , screw through the carpet into the clips to fix the speakers in !
The carpet is quite thick and more than strong enough to support the weight of a normal speaker and there should be no vibrations etc as the carpet acts as a dampner . Then just run the wires up behind the carpet and connect to the speakers .
Naffdave likes this.
curro101 is offline  
 
#4 Old 12-07-2012
Registered Users
 
Join Date: Nov 2011
Location: South Carolina
Vehicle: 2001 SLK320
Posts: 393
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Thanks: 26
Thanked 68 Times in 39 Posts
Garage
Question

Quote:
Originally Posted by curro101 View Post
. . . Then just run the wires up behind the carpet and connect to the speakers .
But how did it sound???? Better, worse, the same as stock?

You in essence added a rear pair of full range speakers but subtracted the front speakers' woofers. (If you had the Bose??) I'm not sure how the frequency dividers work on the OEM system, (I think it was mostly in the amp) but the lower door speakers are pretty good sized for a midrange so they should have been able to carry some bass - if they got any.

Or one could replace the door speakers with some slightly better ones which should give more discrete contol over the sound sourcing . . . (i.e. FR/FL, RR/RL. Assuming you are using an aftermarket HU with four channels of sound.)

Curious minds want to know.
lilred320SLK is offline  
#5 Old 12-07-2012
Moderator
 
curro101's Avatar
 
Join Date: May 2010
Location: Madrid-Spin
Vehicle: Slk 200K 2004 r171
Other Toys: Toyota C-HR Hybrid
Posts: 10,744
Country:
Chats: 0
Mentioned: 109 Post(s)
Tagged: 0 Thread(s)
Quoted: 528 Post(s)
Thanks: 1,500
Thanked 1,297 Times in 1,138 Posts
Garage
No I didn't have an OEM head unit , the same as NaffDave doesn't . I had a head unit with 4x60W output , so I wired into the rear connector for the rear speaker output ! The sound was actually very good for just being some normal cheapish speakers and greatly improved by being front and back .
M4rCu5 likes this.
curro101 is offline  
The Following User Says Thank You to curro101 For This Useful Post:
#6 Old 12-07-2012
Registered Users
 
Join Date: Nov 2011
Location: South Carolina
Vehicle: 2001 SLK320
Posts: 393
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 6 Post(s)
Thanks: 26
Thanked 68 Times in 39 Posts
Garage
Quote:
Originally Posted by curro101 View Post
No I didn't have an OEM head unit . . .
I don't either now, but my HU allows me to run the "rear" channels as (sub) woofers so I'm almost able to duplicate the OEM/Bose setup . . . Took me a bit to figure the wiring though. Initially, I wasn't pumping much to the woofers and it sounded as if I had tin cans as speakers. Now, it sounds at least as good as the original, plus I do have more power to drive it, and I get all the bells and whistles of a new HU. So, not "audiophile" but a nice upgrade with minimal work.

I will probably try to replace the "mid ranges" in the doors with some fuller range speakers when I work on my door panels. I don't expect a lot of this, but they will be newer speakers and it might be interesting to see what difference it could make. Then I'll do something about the rears later on.
lilred320SLK is offline  
#7 Old 12-10-2012
PMB
Registered Users
 
Join Date: Feb 2012
Vehicle: SLK320
Other Toys: 2006 Mini Cooper, 1981 Yamaha RD250LC, 1996 Suzuki Bandit 600, Motobecane AV92 (being restored).
Posts: 81
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 9
Thanked 9 Times in 9 Posts
Garage
Quote:
Originally Posted by lilred320SLK View Post
I will probably try to replace the "mid ranges" in the doors with some fuller range speakers when I work on my door panels. I don't expect a lot of this, but they will be newer speakers and it might be interesting to see what difference it could make. Then I'll do something about the rears later on.
If I remember correctly, we have almost identical front ends, but yours has bluetooth as well. I still have not put the rears in, but the Focal 6 1/2 inch door speakers go very deep for their size, and on some songs I can feel the bass (slightly) in my chest. The tone is set flat with Loudness on. The quality of the sound is comparable to my B&W CDM1NT monitors at home.

The key to the doors is Dynamat (or similar). You need to cover as much of the door panel as possible (see Murat's pictures on the other thread). Forget the outer door skin. If you do this, I think any half decent 6 1/2 inch will give you good strong bass in the front. Keep in mind that if a bass driver is new it takes a good few hours to loosen up and perform it's best (and deepest).
PMB is offline  
#8 Old 12-10-2012
Registered Users
 
Naffdave's Avatar
 
Join Date: Nov 2012
Location: Preesall
Vehicle: 2005 SLK 280 7 Speed Tiptronic In Silver
Other Toys: NSM Sattilite Jukebox
Posts: 595
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 22 Post(s)
Thanks: 89
Thanked 13 Times in 13 Posts
Garage
Send a message via Yahoo to Naffdave
(Thread Starter)
The key to the doors is Dynamat (or similar). You need to cover as much of the door panel as possible (see Murat's pictures on the other thread). Forget the outer door skin.

I always thought its the door skin you should Dynamat ? ive never used the stuff but does it really make a big difference

Dave
Naffdave is offline  
#9 Old 12-11-2012
PMB
Registered Users
 
Join Date: Feb 2012
Vehicle: SLK320
Other Toys: 2006 Mini Cooper, 1981 Yamaha RD250LC, 1996 Suzuki Bandit 600, Motobecane AV92 (being restored).
Posts: 81
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 9
Thanked 9 Times in 9 Posts
Garage
If you put Dynamat on the door skins, it helps quieten road noise and helps to stop rattles. However, the actual speaker driver is still running in free air. This means that sound waves from the back of the speaker cone can cancel out sound waves from the front of the cone. The same reason if you are holding the speaker in your hand and watching the cone move but there is no bass. The trick to good bass is in keeping as much of the "sound" from the back of the driver away from the front.
PMB is offline  
#10 Old 07-16-2013
Per ardua ad cineris.
 
Tolak's Avatar
 
Join Date: Apr 2013
Location: Somerset UK
Vehicle: SLK230 '99 R170
Other Toys: Clio Williams
Posts: 1,039
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 10 Post(s)
Thanks: 14
Thanked 136 Times in 117 Posts
Disagree with Curro101; I think the speaker needs a firm basis so it can shift the air and get a good bass note. Although the carpet is quite firm, and I have used it as separation for my "infinite" baffle cabinet, I do wonder if the support is enough for the speaker mount. My puny 6" are mounted on 1/2" MDF platform.
Agree with PMB, that good separation (along with good support) is needed to get the kick of the bass from the speaker. It's OK for the tweeters and mid range, they do not need to shift air in the same way a sub does.

Looking at the installation on the R171, in the door there is a big sub (8", I think) that is mounted reversed (magnet out).
In an upgrade thread, these were replaced with better speakers, but mounted the same way, and only mod from traditional was to wire the sub out of phase (so the air movement was in phase).

I seem to remember someone mentioning that the same is done on the R170, so the clearance behind the hole that the magnet would go into is not important.

So I'm looking at my rear speaker installation, and wondering.
Should I get the 5"x7" and mount them inverted? This would then use the bulkhead as separation, and also as strong a mount as can be obtained. Only down side is that the cone creates a pressure spot, and this would be wasted into the bulkhead zone.
But then many sub speakers are downward firing, and seem to use the port for the best impact.
Wonder where the port of the chamber behind the bulkhead is?
And how will I mount the speaker grille for the rear speakers? Perhaps the existing speaker mount frame will provide that fixture!

Last edited by Tolak; 07-16-2013 at 03:45 PM. Reason: Rear speakers
Tolak is offline  
#11 Old 03-20-2019
Registered Users
 
Join Date: Mar 2019
Location: Godalming, UK
Vehicle: SLK 230 2002 Year
Posts: 9
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 3
Thanked 0 Times in 0 Posts
SLK Rear Speakers

Just bringing this thread back to life to see if there is any fresh news on this.

I have a 2002 SLK 230 with no rears, Thinking of bunging in a pair of Alpine SPG-17C2 17cm 240W speakers in there. Have a 4x 50w Pioneer Head Unit.

Am I right in thinking there is redundant wires there already?

Does anyone know of a 'show and tell' site with pretty pictures showing the process?

Thanks
LIL DON SLK likes this.
Knock-on is offline  
#12 Old 03-20-2019
Administrator/Founding Member

 
jbanks15's Avatar
 
Join Date: Jun 2006
Location: Tampa, Florida
Vehicle: 2009 SLK 55 AMG Kleemann Supercharger, ECU tune, Headers and LSD, CF Diffuser
Posts: 91,055
Country:
Chats: 38
Mentioned: 458 Post(s)
Tagged: 5 Thread(s)
Quoted: 6487 Post(s)
Thanks: 3,229
Thanked 11,016 Times in 8,376 Posts
Always better to start a new thread

Posters in this 7 year old thread might be long gone
M4rCu5 likes this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Jeff, US Army Master Sergeant Retired
Administrator/Founding Member
2009 SLK 55 AMG Black/Black
Kleemann Supercharger thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Kleemann ECU Tune, headers and downpipes thread here:

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Albums:
To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

ClearBra
OEM MB Plexiglass Draught Stop
Smarttop version 3.22
Previous - 02 SLK 320, 05 SLK 350
jbanks15 is online now  
#13 Old 03-20-2019
Premium Member
 
savcom's Avatar
 
Join Date: Nov 2015
Location: Wiltshire, UK
Vehicle: 2002 Blue SLK320 known as 'Silkie"
Other Toys: 2010 Grey BMW F10 528i
Posts: 2,544
Country:
Chats: 0
Mentioned: 474 Post(s)
Tagged: 0 Thread(s)
Quoted: 605 Post(s)
Thanks: 164
Thanked 294 Times in 238 Posts
Garage
Send a message via Skype™ to savcom
Quote:
Originally Posted by Knock-on View Post
Just bringing this thread back to life to see if there is any fresh news on this.

I have a 2002 SLK 230 with no rears, Thinking of bunging in a pair of Alpine SPG-17C2 17cm 240W speakers in there. Have a 4x 50w Pioneer Head Unit.

Am I right in thinking there is redundant wires there already?

Does anyone know of a 'show and tell' site with pretty pictures showing the process?

Thanks
Chap.


Jeff's right. There are plenty of newer threads in the forum about speakers in the SLK - or start your own. Much easier for everyone.
jbanks15 likes this.

Now : Silkie - 2002 Lazulithe Blue Mercedes Benz SLK320
Also
: 2011 Sophisto Grey BMW F10 528i SE


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

Brings a smile to my face whenever I drive her



To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.


Previous :
1965 Triumph Herald 12/50 ... 1972 Austin 1300 ... 1982 Volvo 265GLE ...

1987 Volkswagen Caravelle ... 1997 Rover 214si ... 2002 BMW E39 530D

If I've helped you sort your problem(s) out, click the 'Thanks' button on the right hand side under my signature.
savcom is online now  
#14 Old 03-20-2019
Registered Users
 
Join Date: Mar 2019
Location: Godalming, UK
Vehicle: SLK 230 2002 Year
Posts: 9
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 3
Thanked 0 Times in 0 Posts
Ahh, that's where I've gone wrong. Used to be a member of a Motorsport Forum years ago abd they got funny if you started a new thread without going back and searching what is out there already.

Will search a bit more and then start a thread later. Thanks
Knock-on is offline  
#15 Old 03-21-2019
Premium Member
 
Australian's Avatar
 
Join Date: Sep 2012
Location: South Australia
Vehicle: SLK 320 2002
Other Toys: Just a shopping trolley.
Posts: 524
Country:
Chats: 0
Mentioned: 207 Post(s)
Tagged: 0 Thread(s)
Quoted: 82 Post(s)
Thanks: 12
Thanked 50 Times in 49 Posts
While awaiting your new thread, I would say that in my opinion adding additional speakers in the rear is not really the best way to go - at least initially. The front speakers can be improved on significantly. I replaced my head unit with a new one. I added an amplifier in the passenger footwell (where the Bose amplifier sits for those that have one) and some decent split system speakers into the door. The difference was amazing. It goes loud. And the bass is fair (the door mirrors aren't much use). I wish I had used Dynamat, but like some people, in my ignorance I would have fitted it to the door outer door skin (it might have made the door mirrors more stable). My head unit was a decent output 4x50W) but the amplifier made a big difference.



I would suggest thinking along these lines and fit rear speakers later if you want.
Australian is offline  
The Following User Says Thank You to Australian For This Useful Post:
#16 Old 03-21-2019
Registered Users
 
Join Date: Oct 2013
Location: Minnesota
Vehicle: 2009 CLK 350 cab
Other Toys: Carver 350 Mariner, Boston Whaler Dauntless, 1961 Les Paul Formerly 2003 slk 230
Posts: 541
Country:
Chats: 0
Mentioned: 271 Post(s)
Tagged: 0 Thread(s)
Quoted: 129 Post(s)
Thanks: 3
Thanked 63 Times in 57 Posts
Here's a vid of someone who did it.

It seems like a lot of work for mediocre results. High frequencies are very directional and with the drivers pointed at the back of the seats, I think you'd get loud mud so to speak. Bass frequencies are much more omni directional which is why bose stuck those wimpy subs there. As mentioned above, upgrading the door speakers and powering them properly would give you much more bang for your buck.
Mn car guy is offline  
The Following User Says Thank You to Mn car guy For This Useful Post:
#17 Old 03-22-2019
Registered Users
 
Join Date: Mar 2019
Location: Godalming, UK
Vehicle: SLK 230 2002 Year
Posts: 9
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Thanks: 3
Thanked 0 Times in 0 Posts
Thanks guys. I'm going to start by upgrading the door ones and then see whether its worth taking it further.
Knock-on is offline  
#18 Old 03-22-2019
Premium Member
 
Australian's Avatar
 
Join Date: Sep 2012
Location: South Australia
Vehicle: SLK 320 2002
Other Toys: Just a shopping trolley.
Posts: 524
Country:
Chats: 0
Mentioned: 207 Post(s)
Tagged: 0 Thread(s)
Quoted: 82 Post(s)
Thanks: 12
Thanked 50 Times in 49 Posts
There's some good posts about it on here if you search. You'll need adapters (just in case you didn't know):



https://www.ebay.co.uk/itm/CT25MC16-...frcectupt=true
Australian is offline  
The Following User Says Thank You to Australian For This Useful Post:
#19 Old 03-24-2019
Registered Users
 
Join Date: Jun 2018
Location: Islas Canarias (Spain)
Vehicle: Mercedes SLK 200 k. Year 2000
Posts: 12
Country:
Chats: 0
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Hello Knock on. I did the same thing as Curro111 and it went very well and I do not need to install amplifiers. But try to install a rather small and shallow speaker. I recommend a speaker of about 45w rms if you have the original radio. Greetings.
Estebandelacruz is offline  
#20 Old 04-03-2019
PMB
Registered Users
 
Join Date: Feb 2012
Vehicle: SLK320
Other Toys: 2006 Mini Cooper, 1981 Yamaha RD250LC, 1996 Suzuki Bandit 600, Motobecane AV92 (being restored).
Posts: 81
Country:
Chats: 0
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 9
Thanked 9 Times in 9 Posts
Garage
Quote:
Originally Posted by Knock-on View Post
Just bringing this thread back to life to see if there is any fresh news on this.

I have a 2002 SLK 230 with no rears, Thinking of bunging in a pair of Alpine SPG-17C2 17cm 240W speakers in there. Have a 4x 50w Pioneer Head Unit.

Am I right in thinking there is redundant wires there already?

Does anyone know of a 'show and tell' site with pretty pictures showing the process?

Thanks
Hey Knock-on! I have not posted here for years but saw your post. You can see my previous posts above. All I can really add is that, firstly, there is no existing, useable rear wiring. Secondly, Bose made a purpose made sub that fits in the back, times 2. I tried them, and they are "just ok". However, take away from the clarity possible from fronts alone with even just a head unit. The Alpines you mention will fit the bill well up front, especially if you use Dynamat. I use them in my wife's Mini. Good bass. Make sure you replace the tweeters in the doors. Does not have to be the Alpines. You can get much better add-ons. Good luck with it!
PMB is offline  
Sponsored Links
Advertisement
 
Reply

  Lower Navigation
Go Back   Mercedes Benz SLK Forum > Mercedes Benz R170 SLK Class Cars > SLK R170 General Discussion

Bookmarks

Quick Reply
Message:
Options
Upload your files to MEGAUPLOAD
Upload your images to ImageShack

Register Now



In order to be able to post messages on the Mercedes Benz SLK Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 2 (1 members and 1 guests)
justmcg
User Tag List

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



Similar Threads
Thread Thread Starter Forum Replies Last Post
Rear/ rear center speakers quicktwinturbo AMGs 5 10-27-2010 09:52 PM
retrofit rear speakers R171 willslk83 General Modifications R171 19 05-29-2010 05:02 AM
Rear Speakers wingman SLK R171 General Discussion 1 05-26-2009 05:10 PM
noise from rear speakers arosamond SLK R171 General Discussion 19 01-02-2009 01:06 AM
Those rear center console speakers bclark SLK R171 General Discussion 43 08-15-2006 09:17 PM

Posting Rules  
You may post new threads
You may 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
 

Clubs, Garage Plus vBulletin Plugins by Drive Thru Online, Inc.