4" or smaller FR driver for 2-way - 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 21st June 2006, 05:39 PM   #1
Kensai is offline Kensai  United States
diyAudio Member
 
Join Date: Jan 2004
Location: St. Louis
Send a message via AIM to Kensai
Question 4" or smaller FR driver for 2-way

I'm going to modify some existing sealed, 3-way cabinets. The originals run an 8" driver full range. The 4" mid and tweeters were crossed very high (and are absolute garbage). The original 8"er is actually very good (and very close to be an FR driver), and I have left it running full range and crossed a B&G Neo3PRD (fits right into the 4" cutout) in very high to get the top end back.

This is a fine sounding speaker, but I've got 3 things I'd like to improve on:

1) more bass
2) smoother midrange
3) better off axis response

So, I'm going to drop in a more capable bass driver (cabinets are too narrow to increase the driver size or I would), and put in another terminal so I can bi-amp these things (using the surround channels from my receiver, this will let me actively crossover the FR driver at 100Hz, 150Hz or 200hz, not to mention save me some money and give me more control).

I'm assuming that going with anything smaller than the orignal 8"er will give me better off axis response, so I guess what I'm looking for is the best compromise of midrange clarity, high end extension and off axis response (sorry, this is important because these speakers are mounted very low; can't change this part of the deal). I've been looking at the HiVi B3S that Zaph recommends, but is there anything better to be had at 4" or less? Perhaps something from Fostex or Tang Band? The Fostex FE87E and FF85K 3"ers look to have stellar top end (going by the manufacture's specs), and I'm very interested in the Tang Band 4" bamboo driver. I might even be able to squeeze in on of the Fostex 4.5" drivers, if they are actually superior, but really, the bottom end for this driver shouldnt' be much of a concern . . . only need it to be flat to 200Hz or less.

So, which drivers have you guys played with? What do you think would be good for my purposes?

Kensai
  Reply With Quote
Old 21st June 2006, 06:10 PM   #2
diyAudio Member
 
Godzilla's Avatar
 
Join Date: Nov 2005
Location: New York
http://www.zillaspeak.com/4greatfullrangers.asp

Have a look here. 200hz is represented by the tenth green line from the left. They all easily make it.

What are the inner dims of your box? The fostex 127e will need to be ported while the TB Bambo can be ported or sealed to sound full. The Pioneer B20 seems it can also be used if you already have a hole for an 8" driver there... then add a tweeter of your choice. All sound different... all sound good. It's a matter of personal taste. I have had all three of these systems in my office at the same time and everyone preferred a different one. If I were to rank them it would be Fostex, Pioneer, TB… someone else here (a sax player and music lover) always loves the Pioneer B20 sound and wouldn’t spend a penny on the other drivers. And a lovely girl you’d love to meet flutters her eyes and always asks me to build her a pair of TB’s in small boxes. She thinks they sound the clearest and best. I could live with any of them because they are all very good.

There are other TB’s out there now that look interesting too… a neat titanium jobber… and fostex also has the 103 and 107. All great choices that could work for you.

Peace,
Godzilla
  Reply With Quote
Old 21st June 2006, 06:26 PM   #3
Kensai is offline Kensai  United States
diyAudio Member
 
Join Date: Jan 2004
Location: St. Louis
Send a message via AIM to Kensai
Well, 'zilla, that certainly doesn't narrow my choice down any

These cabs are about .88 cubic feet in volume and are currently unstuffed. I'm planning to use my receiver's crossover to run the FR unit, so that's a 4th order LR type. This will let me use the receiver to level match and time align the drivers to taste.

I've been interested in the Pio B20s for quite awhile now, but given that they're 8"ers, they'd have to be running full range all the way down, and my sims show that they might have trouble matching the performance I'm getting from my current drivers. If I were to work with those, I would likely just run them with my Neo3 tweeters exactly like I am now (maybe step up to a higher grade 1uF cap; they're on cheapie .47uF caps right now, and given that they're 4Ohm drivers, they're crossed about twice as far out as you suggested crossing piezos with the B20). Do you think these Pios might have nicer midrange and better off axis than my current 8"ers? They're just heavy treated paper cones with heavy, inverted dustcaps. This would be the simpliest and most attractive upgrade, if its actually an upgrade

Kensai
  Reply With Quote
Old 21st June 2006, 10:46 PM   #4
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
My favorite small drivers in descending order (performance & cost) FE108eS, FE127e, Aura NS3 (the non-phase plug one -- the phase plug one might be even better for your ap)

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 22nd June 2006, 01:40 AM   #5
lovdoc is offline lovdoc  United States
diyAudio Member
 
lovdoc's Avatar
 
Join Date: Jun 2006
I have a pair of modified vintage speakers. I am using a TangBand W3-315D highpassed at 200 Hz along with the 15 inch Jenson woofers that came with the speakers.
Attached Images
File Type: jpg modified4way.jpg (88.3 KB, 239 views)
  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
New smaller "Harper" speaker from Gedlee markus76 Multi-Way 53 28th December 2009 02:54 AM
FS: Silver Iris Coaxial 15" driver pair (sans XO and compression driver) theAnonymous1 Swap Meet 0 24th April 2007 01:09 AM


New To Site? Need Help?

All times are GMT. The time now is 03:51 PM.


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