Clone of PMC DB1+ ??? - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 16th May 2009, 12:41 AM   #1
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Default Clone of PMC DB1+ ???

Does anyone have enough insight to suggest how it might be possible to make a clone of this speaker ?

http://www.pmc-speakers.com/docs/145...b4df_DB1-C.pdf

The claim is that this is a TL design in a bookshelf sized box ?

(I have a pair of FB1's and they are really nice).
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 16th May 2009, 09:05 PM   #2
burnett is offline burnett  Germany
diyAudio Member
 
Join Date: Oct 2007
These are the Information I found across the net about the speakers:

Drivers:

Vifa D27TG-30-06 and M13WG-08-09

Enclosure: see attachment
Attached Files
File Type: pdf db1a1.pdf (18.4 KB, 433 views)
  Reply With Quote
Old 16th May 2009, 09:10 PM   #3
burnett is offline burnett  Germany
diyAudio Member
 
Join Date: Oct 2007
Inside pic
Attached Images
File Type: jpg db1+.jpg (53.9 KB, 1115 views)
  Reply With Quote
Old 16th May 2009, 10:20 PM   #4
Account disabled at member's request
 
MJL21193's Avatar
 
Join Date: Mar 2007
I did a similar build here using similar drivers.
They sound good but I think they could have been as good (or better) with a simple ported box, avoiding some build and design complexity.
The advantages of TL are realized with larger midbass drivers and boxes.
  Reply With Quote
Old 16th May 2009, 10:41 PM   #5
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
My first DIY speaker was a ported box:

My 'Moon-Onken'

but it's a full-range, so the bass is limited. However, the real issue is that I find that the PMCs have a smoother response, I can listen to them for much longer without fatigue and they give up only a very little in the way of high end detail against the Onken's.

Since my existing PMCs are a TL design I am wondering if this approach is partly responsible for the smoother sound, or if it is the drivers. I still have to try out some of the cone treatments recommended by Dave (planet10) to tame the high end a bit but I feel a new project coming on later this year involving a stereo amp design and a new pair of DIY speakers. Which direction to go for clean, smooth and decent low end ?
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 16th May 2009, 11:08 PM   #6
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Here is a dimensioned drawing based on the pdf of post 2.

Perhaps someone with MJK could model the line (assumming that the drive ris a stock VIFA and not a custom OEM)

dave
Attached Files
File Type: pdf pmc-dbr1-map.pdf (21.2 KB, 311 views)
__________________
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 16th May 2009, 11:10 PM   #7
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by Bigun
, the real issue is that I find that the PMCs have a smoother response, I can listen to them for much longer without fatigue and they give up only a very little in the way of high end detail against the Onken's.
That is almost surely all on the big 7 kHz peak inherent to the FE127e. Pretty easier to reduce that issue dramatically.

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 19th May 2009, 12:06 AM   #8
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Quote:
Originally posted by planet10
Here is a dimensioned drawing based on the pdf of post 2.

Perhaps someone with MJK could model the line (assumming that the drive ris a stock VIFA and not a custom OEM)

dave
I'm definitely interested in this option, if somebody would like to help model it I would be most grateful. If the design ideas progress well there's a good chance I will build it. But this is beyond my ability to design and so I need some help.

The goal should be the best darn small-box DIY speaker ever made with a clean, smooth musical sound and enough bass to keep folks happy with the smaller box
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 19th May 2009, 04:00 AM   #9
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Quote:
Originally posted by burnett
These are the Information I found across the net about the speakers:
Drivers:
Vifa D27TG-30-06 and M13WG-08-09

I didn't find much about these drivers anywhere. Choosing drivers is another learning curve for me. For example, how would the PMC drivers compare with, say, the Peereless range ?
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.
  Reply With Quote
Old 19th May 2009, 03:56 PM   #10
diyAudio Member
 
Join Date: Jan 2005
My best guess is something very similar to:

http://www.tymphany.com/d27tg35-06

http://www.tymphany.com/m13sg-09-08
  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
F1 Clone DIY PCB suds Group Buys 2 8th January 2009 09:50 AM
My F3 Clone 04dgmsilv Pass Labs 11 31st August 2008 11:59 AM
clone AN/K ccopp Multi-Way 0 9th July 2006 08:24 AM
Question regarding ProAc 2.5 Clone and Tempo 2 Clone zoooh Multi-Way 5 11th March 2003 08:19 PM


New To Site? Need Help?

All times are GMT. The time now is 06:05 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