Pioneer 4" Alnico - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 15th November 2009, 07:36 PM   #1
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
Default Pioneer 4" Alnico

Bought off ebay 1-2 years ago as NOS. Haven't done more than play them mildly for an hour free air with 45uF for protection, using 8" woofer with coil under. Pioneers don't sound bad, maybe even good.
Their construction is curious to me because they don't have separate surrounds, just the cone material has a roll then is glued to frame.
Thought someone would know something about this type. Maybe their just for clock radios or something, tho seem better than that.
Attached Images
File Type: jpg IMG_0186.JPG (457.6 KB, 172 views)
  Reply With Quote
Old 15th November 2009, 07:44 PM   #2
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
Default rear pic

On back: B5491260P3

If get time this week will build a 5L cab to house them and keep them playing mildly. Can't expect much power handling, so will likely use with woofer below. (Have reconed Philips 15's , Madison Knight 15's, Meniscus 8's, and HA FR8's can try).
Attached Images
File Type: jpg IMG_0191.JPG (351.0 KB, 153 views)
  Reply With Quote
Old 15th November 2009, 07:59 PM   #3
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Substantial magnet on those... the integrated accordian surround means little bass but no change in material impedance as the waveform hits the surround. Could well make a decent mid-tweeter.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 15th November 2009, 08:21 PM   #4
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
Any idea the type of speaker they would've gone in? Seller said they were from 60's fwiw.
  Reply With Quote
Old 15th November 2009, 09:05 PM   #5
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
I'd guess they were out of a small box, 3/8 or 1/2" ply, rear mounted, with a masonite back, possibly filled with small holes. 8-9" tall, 6" wide, 5" deep. Usually finished in walnut (real veneer).

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 15th November 2009, 10:03 PM   #6
diyAudio Member
 
InclinedPlane's Avatar
 
Join Date: Jan 2007
Location: Maine
Quote:
Originally Posted by planet10 View Post
Substantial magnet on those... the integrated accordian surround means little bass but no change in material impedance as the waveform hits the surround. Could well make a decent mid-tweeter.

dave
What would happen if you cut the surround with a razor all the way around but leaving four small sections NSEW, say, no more than 1/2cm wide to hold it? I was just thinking of a cheap way to make a 'surroundless' speaker like Fertin did, but without the nasty-looking wire.

Don't freak out, it would just be experimentation!
  Reply With Quote
Old 16th November 2009, 12:10 AM   #7
nodiak is offline nodiak  United States
diyAudio Member
 
Join Date: Nov 2004
Location: really northern cal. coast
Thanks for the input Dave. Should be able to get the 5L cabs together this week. Will allow aperiodic option.

"What would happen if..."
Could be interesting but not for me.

I do have 4 of these and might coat the cones on 2 and maybe even phase plugs. Then compare to untreated over time.
After an afternoon the midrange is very nice. Vocals, speech, guitars especially - "relaxed and natural", like they designed for then it seems. Crash cymbals still unruly, cymbal dome pretty real. Worth playing with.
Don
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help to choose between Alerion & Pma6 Ob with "Tone Tubby" AlNiCo HPH Full Range 1 27th July 2009 08:34 PM
Old alnico 10" TroelsM Multi-Way 5 3rd November 2007 02:55 PM
Coral 8A7, 8" Alnico ? batdorf9 Full Range 1 4th December 2005 02:26 AM
FS 2@ 15" JBL Alnico speakers kjunom Swap Meet 5 3rd December 2005 09:39 PM


New To Site? Need Help?

All times are GMT. The time now is 08:37 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2