Jump to content

acg

Deep End DIY - My first speaker project

Recommended Posts

This is a huge project ... so much wood work involved ...

 

How tall will they stand once finished?

Share this post


Link to post
Share on other sites


This is a huge project ... so much wood work involved ...

 

How tall will they stand once finished?

 

Based on the dimension on page 1 guessing roughly 2 meters tall.

 

Share this post


Link to post
Share on other sites

This is a huge project ... so much wood work involved ...

 

How tall will they stand once finished?

Somewhere about 2m is pretty right. If I experiment with an Injection Channel then over 2m tall for sure.

Share this post


Link to post
Share on other sites

Did not get much done today...lost most of the day to friends. Here are a couple of photos of a midrange horn ready to go on the lathe.

post-139669-0-41304100-1419756004_thumb.post-139669-0-35074600-1419756072_thumb.

EDIT: correct photos this time

Edited by acg

Share this post


Link to post
Share on other sites

Have been very much sidetracked by the festive season and my best intentions of knocking out some big days on this project were effectively scuttled by the lovely distraction of friends, an early departure for a beach holiday and the corresponding belated return.  Will spend tomorrow morning finishing all the cutting for the six horns and then see where I can find time to further modify the lathe so I can turn them all into shape.

 

Learnt a good lesson today...had been borrowing a friends jigsaw for the cutting (circa $100 Makita) but this afternoon had to buy my own.  I got a $120 Bosch and OMG this thing absolutely flies...I had been taking about two hours to cut out a full sheet of rings with the Makita but the Bosch does the same thing in about half an hour...tools certainly ain't tools!

Share this post


Link to post
Share on other sites


Fascinating project. Very interested to see how these will attach to the lathe and how you use your profiles. I happen to have a lathe in dads shed. Hmmmm

Sent from my iPhone using Tapatalk

Share this post


Link to post
Share on other sites

What family of horn contours did you use in the design?

Tractrix for all three pair. Needed to keep the mouth area somewhat under control so L'cleach were ruled out early in the piece.

Share this post


Link to post
Share on other sites

I should add that I modelled the horns in HornResp and used the export function to import the profile into AutoCAD where I fitted a spline and modified the mouth so that it terminated properly at square to the centreline (HornResp does not quite get this right). I believe that the mouth termination could be of some importance, especially considering JMLC's efforts.

Share this post


Link to post
Share on other sites


Have been very much sidetracked by the festive season and my best intentions of knocking out some big days on this project were effectively scuttled by the lovely distraction of friends, an early departure for a beach holiday and the corresponding belated return.  Will spend tomorrow morning finishing all the cutting for the six horns and then see where I can find time to further modify the lathe so I can turn them all into shape.

 

Learnt a good lesson today...had been borrowing a friends jigsaw for the cutting (circa $100 Makita) but this afternoon had to buy my own.  I got a $120 Bosch and OMG this thing absolutely flies...I had been taking about two hours to cut out a full sheet of rings with the Makita but the Bosch does the same thing in about half an hour...tools certainly ain't tools!

 

A Makita should easily keep up with a Bosch. Bet you weren't using the same blades for both cuts.

Share this post


Link to post
Share on other sites

A Makita should easily keep up with a Bosch. Bet you weren't using the same blades for both cuts.

I agree. Have both makita and Bosch power tools and have always thought the makita's to be slightly better. A new blade does the trick.

Share this post


Link to post
Share on other sites

A Makita should easily keep up with a Bosch. Bet you weren't using the same blades for both cuts.

 

 

I agree. Have both makita and Bosch power tools and have always thought the makita's to be slightly better. A new blade does the trick.

 

 

Same blades.  Looked up the specs:  the Makita is 450w with 18mm stroke; Bosh is 620w with a fancy pendulum stroke (whatever that means). 

Share this post


Link to post
Share on other sites


Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By La scala
      Item: Klipsch La Scala speakers 
      Location: Perth metro
      Price:  $3500
      Item Condition: Great for their age, 1978 ish Alnico 
      Reason for selling: Told to shed some gear
      Payment Method: Pickup - Cash,  Bank Tranfer COD Only
      Extra Info: East coast buyers, can do live video demo via FaceTime 
      These have the favoured Alnico Magnets, serviced X Overs and updated Mundorf Capacitors, some body bracing to tighten bottom end.
      All drivers work spot on.
      Sound wise, these have a uncanny ability to project a very large wall of sound with fine detail and dynamic authority.  Impressive as I am normally into Electrostats, Planar and Ribbon speakers. Very versatile and allow use of Set Valve Amps due to their 100db efficiency. 
       
      Photos: Advertisements without photos of the actual item will not be approved.




    • By MarcAL
      Item: Altec Lansing MR II 564 Large Format Mantaray Horns
      Location: Sydney South
      Price: $220 the pair or $125 each
      Item Condition: Used, good original condition, see pictures
      Reason for selling: NLR
      Payment Method: Pickup - Cash, Paypal, COD Only
      Extra Info: Altec Lansing MR II 564 Mantaray Constant Directivity Horns for large format 1.4" compression drivers.
      PM me if you require large compression Altec drivers to suit.
      Nominal Dispersion Angle: 60 x 40 degrees.
      Useable Low Frequency Limit: 500Hz.
      Construction: Heavy duty, weather resistant polyester/fiberglass.
      Finish: Standard Altec grey with a few minor scratches, can be resprayed another colour for an additional cost.
      Suitable Drivers: Many 1.4" throat compression drivers or Altec Lansing Large Format Compression Driver models 288, 290, 291, 299 etc.
      Small format compression drivers can also be used with the use of an adapter.
      Data Sheet: http://pdf.textfiles.com/manuals/STARINMANUALS/Bosch - EV/Archive/Altec/MRII 564.pdf
      Weight: 2.1kg each.
      Shipment: Will send interstate at purchasers expense, free delivery within Sydney.
      Pictures:




       
    • By MarcAL
      Item: Altec Lansing MR II 564 Large Format Mantaray Horns
      Location: Sydney South
      Price: $225 for the pair
      Item Condition: Used, good original condition, see pictures
      Reason for selling: NLR
      Payment Method: Pickup - Cash, Paypal Only
      Extra Info: Altec Lansing MR II 564 Mantaray Constant Directivity Horns for large format 1.4" compression drivers.
      Nominal Dispersion Angle: 60 x 40 degrees.
      Useable Low Frequency Limit: 500Hz.
      Construction: Heavy duty, weather resistant polyester/fiberglass.
      Finish: Standard Altec grey with a few minor scratches, can be resprayed another colour for an additional cost.
      Suitable Drivers: Many 1.4" throat compression drivers or Altec Lansing Large Format Compression Driver models 288, 290, 291, 299 etc.
      Data Sheet: http://pdf.textfiles.com/manuals/STARINMANUALS/Bosch - EV/Archive/Altec/MRII 564.pdf
      Weight: 2.1kg each.
      Shipment: Will send interstate at purchasers expense, free delivery within Sydney.

      Pictures:






    • By Alpine Electrocats
      Item: Altec 802-8D Horns and Compression drivers
       
       
       
       
       
       
       
       

      Location: Canberra
      Price: $1000 neg
      Item Condition: Cosmetically a bit rough but should be fine
      Reason for selling: Not needed
      Payment Method: Pickup - Cash, Paypal, COD Only
      Extra Info: These came from the recording studio at the Canberra School of music. I am not sure how to text them as I presume I need a crossover so as to send the right frequencies through.
      This seems a fair price, they have been listed for up to $4000 on eBay (although that might be an optimistic seller)
      I can bring them to Sydney or post them - going to SydneyAugust 3-10
       
      Pictures:
       
       





    • By MRG
      Item: Horns (Autotech 600Hz JMLCe) and SOLD Faital Pro Compression Drivers (HF108)  
      Location:Sydney
      Price: Further reduced to $325 
      Item Condition:Excellent lightly used domestically 
      Reason for selling:Trying other stuff
      Payment Method: Pickup - Cash, Paypal, Bank Transfer
      Horns are beautifully made in Poland.Very solid. As used in Redefy models. Constant Directivity.  With a 600Hz cut off.
      Faital Pro HF108 hardly used.  These have an extended range to 20kHzHorn pics
       
       
       
       
       
       
×
×
  • Create New...