|
|
| Author |
Message |
peter scott
Joined: 18 Dec 2007
Posts: 7118
Location: Edinburgh
|
|
| Back to top |
|
 |
steveglazier
Joined: 24 Feb 2008
Posts: 11
Location: Stoke on Trent
|
 Posted: Wed Aug 12, 2009 6:08 pm Post subject: |
 |
|
Another go at this topic, What sizes speakers would have been used in a 1959 ford 100e. Would it have been one single 4 ohm speaker
or a 8 ohm. I have a 1959 ford radio but now speakers (radio does work Tried it on a 4ohm modern speaker, But the volume seem's a bit on the low side
Cheers Steve |
|
| Back to top |
|
|
Phil - Nottingham
Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham
|
| Posted: Wed Aug 12, 2009 7:44 pm Post subject: |
|
|
Older radios used 8 or 16Ω speakers - 2 matching 4Ω speakers in series (I think or it parallel?) will equal 8Ω
_________________
Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
|
| Back to top |
|
|
Rich5ltr
Joined: 28 Mar 2008
Posts: 678
Location: Hampshire, UK
|
| Posted: Wed Aug 12, 2009 8:04 pm Post subject: |
|
|
Can't comment on the speakers because the internals of my radio were modernised but here's my finished job  |
|
| Back to top |
|
|
Nic Jarman
Joined: 05 Oct 2008
Posts: 1031
Location: Stoke by Clare, Suffolk
|
| Posted: Mon Aug 17, 2009 2:15 pm Post subject: |
|
|
Here we go; impedence is measured in ohms at 1khzs and represented by z.
Speakers in series are simply added together like so, zt = z1 + z2 + and so on.
Speakers in parallel are represented by the equation, 1/zt = 1/z1 + 1/z2 + and so on.
So 2 x 4ohm speakers in parallel = ¼ + ¼ = ½ now reciprocate = 2ohms
And 3 x 4ohm speakers in parallel = ¼ + ¼ + ¼ = ¾ reciprocate = 4/3 or 1 1/3 ohms. The most power out of a speaker is when the speaker impedence matches the internal impedence of the amplifier, this is known as impedence matching.
Got it?
_________________
1936 Morris 8 Series 1
1973 MGB roadster
1977 MG Midget 1500
Dax Rush |
|
| Back to top |
|
|
Rick
Site Admin
Joined: 27 Apr 2005
Posts: 22447
Location: UK
|
|
| Back to top |
|
|
Phil - Nottingham
Joined: 01 Jan 2008
Posts: 1252
Location: Nottingham
|
| Posted: Mon Aug 17, 2009 9:04 pm Post subject: |
|
|
About 1970 although most ignored by then
_________________
Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2 |
|
| Back to top |
|
|
Penman
Joined: 23 Nov 2007
Posts: 4757
Location: Swindon, Wilts.
|
| Posted: Tue Aug 18, 2009 1:55 pm Post subject: |
|
|
Hi
I would guess that it was the same time they dropped the domestic Radio licence.
_________________
Bristols should always come in pairs.
Any 2 from:-
Straight 6
V8 V10 |
|
| Back to top |
|
|
Nic Jarman
Joined: 05 Oct 2008
Posts: 1031
Location: Stoke by Clare, Suffolk
|
| Posted: Wed Aug 19, 2009 10:24 am Post subject: |
|
|
If you have a radio in a shop or other public area you have to pay around £200 to the performing rights people. Somehow I do not believe the money gets to any of the artists, why don't the authorities just call it a licence or Radio Tax.
_________________
1936 Morris 8 Series 1
1973 MGB roadster
1977 MG Midget 1500
Dax Rush |
|
| Back to top |
|
|
roverdriver
Joined: 18 Oct 2008
Posts: 1210
Location: 100 miles from Melbourne, Victoria, Australia
|
| Posted: Wed Aug 19, 2009 10:54 am Post subject: |
|
|
| Quote: | | If you have a radio in a shop or other public area you have to pay around £200 to the performing rights people. |
Same applies in Oz, however a friend of mine solved the problem by installing a notice in his shop which read "Please Note- The Radio in this shop is for the staff only. Customers and members of the public must refrain from listening to it."
_________________
Dane- roverdriver but not a Viking. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Profile
Log in to check your private messages
Log in
