280SEL - Mercedes-Benz Forum

 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 05-25-2013, 04:16 PM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2012
Vehicle: 1970 280SEL
Location: Texas
Posts: 27
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
280SEL

I have a radio question, I have a stock Becker Europa radio. My question is what ohm rating should that radio require? It's AM FM with only one speaker in the dash. I replaced the original with a 4 ohm speaker and it works but volume is low with it turned all the way up. Any ideas?

1970 Mercedes Benz 280SEL
VIN 10801912050616

1967 Mercedes 250SE
Parts Car
jman1151 is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 05-25-2013, 05:41 PM
BenzWorld Elite
 
rumb's Avatar
 
Date registered: Oct 2012
Vehicle: 68 250S, 91 300se, 98 SL500, 450SEL 6.9, 14 CLS550 Past MB's; 300SD, 300E, 300TE, 190E, ML420
Location: Colorado
Posts: 2,801
Mentioned: 12 Post(s)
Quoted: 516 Post(s)
Garage
Did it work before? Your radio probably needs rebuilt.
rumb is offline  
post #3 of 9 (permalink) Old 05-29-2013, 07:25 PM
BenzWorld Extremist
 
Date registered: Sep 2012
Vehicle: 300sel W109, 280S 70 , 220s 62. 230 66. Lancia Flavia 63.Pininfarina
Location: Totteridge London.
Posts: 811
Mentioned: 0 Post(s)
Quoted: 59 Post(s)
These period radios have a low power amp ,most work best with small 4 Ohm speakers ,a speaker with a massive magnet assembly requires massive power too so is mismatched here though may be of correct impedance;other than that the output transistors are faulty in the unit
adler is offline  
 
post #4 of 9 (permalink) Old 05-30-2013, 05:12 AM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2012
Vehicle: 1970 280SEL
Location: Texas
Posts: 27
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Quote:
Originally Posted by adler View Post
These period radios have a low power amp ,most work best with small 4 Ohm speakers ,a speaker with a massive magnet assembly requires massive power too so is mismatched here though may be of correct impedance;other than that the output transistors are faulty in the unit
Thanks for the replies, I guess its time to send it off to the Radioman

1970 Mercedes Benz 280SEL
VIN 10801912050616

1967 Mercedes 250SE
Parts Car
jman1151 is offline  
post #5 of 9 (permalink) Old 05-30-2013, 10:52 AM
Lifetime Premium Member
 
Scoot's Avatar
 
Date registered: Oct 2002
Vehicle: 1967 250 SL, 1963 220Sb
Location: Los Angeles / Altadena
Posts: 2,683
Mentioned: 3 Post(s)
Quoted: 134 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by jman1151 View Post
I have a radio question, I have a stock Becker Europa radio. My question is what ohm rating should that radio require? It's AM FM with only one speaker in the dash. I replaced the original with a 4 ohm speaker and it works but volume is low with it turned all the way up. Any ideas?
Is the radio the same volume independent of where you have the volume knob? Or does it get from really quiet to quiet? If the volume control works then try an appropriate speaker. Low-power beckers work horribly with modern high-power speakers.

Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
Scoot is offline  
post #6 of 9 (permalink) Old 05-30-2013, 11:22 AM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2012
Vehicle: 1970 280SEL
Location: Texas
Posts: 27
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
Quote:
Originally Posted by Scoot View Post
Is the radio the same volume independent of where you have the volume knob? Or does it get from really quiet to quiet? If the volume control works then try an appropriate speaker. Low-power beckers work horribly with modern high-power speakers.
The volume control does work, and I do have a 4"X6" - 4 ohm speaker. On a scale of 0 -10 the volume only reaches maybe a 3 if you understand my analogy.

1970 Mercedes Benz 280SEL
VIN 10801912050616

1967 Mercedes 250SE
Parts Car
jman1151 is offline  
post #7 of 9 (permalink) Old 05-30-2013, 11:25 AM
Lifetime Premium Member
 
Scoot's Avatar
 
Date registered: Oct 2002
Vehicle: 1967 250 SL, 1963 220Sb
Location: Los Angeles / Altadena
Posts: 2,683
Mentioned: 3 Post(s)
Quoted: 134 Post(s)
Lifetime Premium Member
Quote:
Originally Posted by jman1151 View Post
The volume control does work, and I do have a 4"X6" - 4 ohm speaker. On a scale of 0 -10 the volume only reaches maybe a 3 if you understand my analogy.
Do you have another low-power speaker. Sometimes it can also be the speaker... Is this a radio with a separate amplifier? My experience with these radios says that you need a known-good radio to test speakers and known-good speakers to test radios and known-good amplifiers to test radios with separate amplifiers and known-good radios to test amplifiers for radios with separate amplifies. Also, a 4 x 6 4 ohm speaker may still not be an appropriate speaker for this situation.

Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
Scoot is offline  
post #8 of 9 (permalink) Old 05-30-2013, 11:26 AM
Lifetime Premium Member
 
Scoot's Avatar
 
Date registered: Oct 2002
Vehicle: 1967 250 SL, 1963 220Sb
Location: Los Angeles / Altadena
Posts: 2,683
Mentioned: 3 Post(s)
Quoted: 134 Post(s)
Lifetime Premium Member
If you go to scrap yards, get a speaker out of the back doors of an early W124. Or out of a W123, but those are often trashed from the sun.

Currently: 1967 250 SL, 1963 220Sb, 1965 300SE Lang, 1971 280SE parts car, 1972 Alfa GTV, 1965 Alfa Duetto, 1993 BMW R100R
Past: 1971 250 C, 1985 300 TD, 1967 250 S, 1968 280 S,1981 300 D, 1982 280CE, 3 Facel Vegas, Borgward Isabella Coupe, Alfa 2600 Sprint, Volvo P1900 (yes), numerous less interesting Volvos, ...
Scoot is offline  
post #9 of 9 (permalink) Old 05-30-2013, 11:31 AM Thread Starter
BenzWorld Junior Member
 
Date registered: Aug 2012
Vehicle: 1970 280SEL
Location: Texas
Posts: 27
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
(Thread Starter)
The radio has no amp. The speaker is just a generic 4 ohm and I have tested it in my truck and it works well.

1970 Mercedes Benz 280SEL
VIN 10801912050616

1967 Mercedes 250SE
Parts Car
jman1151 is offline  
Sponsored Links
Advertisement
 
Reply

  Mercedes-Benz Forum > General Mercedes-Benz Forums > Vintage Mercedes-Benz

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Mercedes-Benz 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









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



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

 

Title goes here

close
video goes here
description goes here. Read Full Story
For the best viewing experience please update your browser to Google Chrome