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TonyB
10-03-2008, 05:28 PM
Just got a pair of Peavey messenger 15" Pro Sub's and was thinking that I could use my existing poles with them but they go right through the speaker cabinet unlike my other bass bins where they sit in a top hat, so they are too short.

So need advice where to get some poles that are about 135cm long or adjustable ones that go to that length in the 35mm variety.

Have had a search but can't find any of that length.

Any idea's?

Thanks

Corabar Steve
10-03-2008, 05:55 PM
Why not just buy some tophats?

Excalibur
10-03-2008, 06:02 PM
Just got a pair of Peavey messenger 15" Pro Sub's and was thinking that I could use my existing poles with them but they go right through the speaker cabinet unlike my other bass bins where they sit in a top hat, so they are too short.

So need advice where to get some poles that are about 135cm long or adjustable ones that go to that length in the 35mm variety.

Have had a search but can't find any of that length.

Any idea's?

Thanks

I find that very surprising! :eek:


Why not just buy some tophats?

That would have ben my suggestion also.

CRAZY K
10-03-2008, 06:57 PM
I find that very surprising! :eek:



That would have ben my suggestion also.

The reason Peavey Poles which are 140mm long and go all the way through the sub a distance of 47mm is to prevent toppling over--I assume.

Think Archimedes principle of lever.

To topple a sub using a pole inserted into the sub--- the length of the lever is distance from point of entry (fulcrum) top of sub-- to top of pole.

You would have a longer lever if you used a top hat.

You also have the weight of the sattelite speaker giving help to the leverage--started by a drunk punter bashing into the speakers.

The notes with the sub say this---

Suitable pole is the PS-B part number #15900380

CAUTION DO NOT USE ANY SATTELITE POLE OTHER THAN THE PS-B
IN CASE OF DIFFICULTY CONSULT PEAVEY DEALER

Problem solved:D

CRAZY K

Excalibur
10-03-2008, 07:12 PM
The reason Peavey Poles which are 140mm long and go all the way through the sub a distance of 47mm is to prevent toppling over--I assume.

Think Archimedes principle of lever.

To topple a sub using a pole inserted into the sub--- the length of the lever is distance from point of entry (fulcrum) top of sub-- to top of pole.

You would have a longer lever if you used a top hat.

You also have the weight of the sattelite speaker giving help to the leverage--started by a drunk punter bashing into the speakers.

The notes with the sub say this---

Suitable pole is the PS-B part number #15900380

CAUTION DO NOT USE ANY SATTELITE POLE OTHER THAN THE PS-B
IN CASE OF DIFFICULTY CONSULT PEAVEY DEALER

Problem solved:D

CRAZY K


Seek and ye shall find, eh? The above is totally logical, it's just I've never seen anyone else do this!

Corabar Steve
10-03-2008, 07:21 PM
To topple a sub using a pole inserted into the sub--- the length of the lever is distance from point of entry (fulcrum) top of sub-- to top of pole.

You would have a longer lever if you used a top hat.

Only if you used a long pole.

Top hat & shorter pole = smaller lever.

Excalibur
10-03-2008, 07:25 PM
Only if you used a long pole.

Top hat & shorter pole = smaller lever.

Sorry Steve, ye cannae change the laws of phyics!! Alan and Peavey are right, you're wrong! You're actually viewing this from the wrong perspective.

Corabar Steve
10-03-2008, 08:20 PM
Point of entry to top of long pole = long lever

Point of entry to top of short pole = short lever.

One Vision
10-03-2008, 08:28 PM
Speaker Pole (1314mm) Price Each£10.00




Speaker Satallite Pole
Black Finish
35mm OD
Length : 1314mm
Ideal for Peavey range as pole goes through to base of SUB.

http://www.discoworlduk.com/index.html?lang=en-uk&target=d23.html

CRAZY K
10-03-2008, 08:54 PM
Point of entry to top of long pole = long lever

Point of entry to top of short pole = short lever.

Wouldnt get proper working height on sattelite speaker

Anyway peavey Poles for 20 quid--why I am I discussing this:D

CRAZY K

Excalibur
10-03-2008, 10:03 PM
Point of entry to top of long pole = long lever

Point of entry to top of short pole = short lever.

With top hat of say three inch depth, that's a lot of leverage applied to it, even with a short pole . If your pole goes to the bottom of a 24" speaker cab, that's eight times bigger than three, so the fulcrum has moved. Think see saws, Steve. My explanation is :pants: , but the maths is correct.

TonyB
11-03-2008, 12:37 AM
Thanks KARL-D. I did find some about £3 cheaper a pair from an online retailer I didn't know but ordered some from Disco World.

Thanks also for the Crazy theory of fulcrum law :)

I did think about getting some top hats but the pole going all the way through does make it feel a lot more stable.

Corabar Steve
11-03-2008, 07:52 AM
I fail to see how the fulcrum (The point or support on which a lever pivots) can move as the point of entry is a fixed point & therefore it will always be the pivot point.

Excalibur
11-03-2008, 11:23 AM
I fail to see how the fulcrum (The point or support on which a lever pivots) can move as the point of entry is a fixed point & therefore it will always be the pivot point.

The fulcrum moves in relation to the length of the pole. If there's only 3" below, and 21" above , then it's different to 24" below and 24" above! Do you see what I'm saying? :bang: :bang:

8 times leverage, rather than dead equal.

CRAZY K
11-03-2008, 12:18 PM
I fail to see how the fulcrum (The point or support on which a lever pivots) can move as the point of entry is a fixed point & therefore it will always be the pivot point.

On reflection maybe the fulrum is really the bottom edge of the sub where it interacts with the dance floor.

Think of it toppling over and you will see my idea.

Sooo the distance between the top of the pole and the bottom edge of the sub might be considered an important distance.

Clearly the pole lever length ---top of pole to bottom of sub will be longer if the pole only inserts 3 or 4 inches into a top hat --rather than the proper way which is to the bottom of the sub a distance of around 18.5 inches ( the sub is sitting next to me at the moment thats how I know )

A difference of approx 15 inches which in relation to the overall pole length is significant.

Really our brain power is wasted here:D

CRAZY K

Excalibur
11-03-2008, 12:25 PM
On reflection maybe the fulrum is really the bottom edge of the sub where it interacts with the dance floor.

Think of it toppling over and you will see my idea.

Sooo the distance between the top of the pole and the bottom edge of the sub might be considered an important distance.

Clearly the pole lever length ---top of pole to bottom of sub will be longer if the pole only inserts 3 or 4 inches into a top hat --rather than the proper way which is to the bottom of the sub a distance of around 18.5 inches ( the sub is sitting next to me at the moment thats how I know )

A difference of approx 15 inches which in relation to the overall pole length is significant.

Really our brain power is wasted here:D

CRAZY K

Yes, because Steve is bound to say that the three or four inches of a top hat is in effect the full length of the speaker, which would be nearly true if the poles were an interference fit at all points, and the top hat was bolted in with M10 screws. ;) :D

CRAZY K
11-03-2008, 12:33 PM
Yes, because Steve is bound to say that the three or four inches of a top hat is in effect the full length of the speaker, which would be nearly true if the poles were an interference fit at all points, and the top hat was bolted in with M10 screws. ;) :D

If i get time I will phone my mate the technical man at Peavey in Corby and confirm :D :D :D

CRAZY K

Excalibur
11-03-2008, 12:42 PM
If i get time I will phone my mate the technical man at Peavey in Corby and confirm :D :D :D

CRAZY K

I wouldn't bother mate! According to some folk on here, those lads aren't obeying the laws of Physics anyway!! ;) ;) :D :D ( And I refuse to get drawn into that old chestnut. I've had enough arguments on here lately for a month!) When I come home tonight, I'm going to start a thread asking for humorous experiences with electricity! ( Which are only funny now that we are sat at home typing, instead of trying to restore sound and light to many unhappy punters!!:D )