Anyone use the cheap Pioneer 8" Coaxial? Questions - 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 January 2007, 03:05 AM   #1
diyAudio Member
 
Join Date: Jan 2007
Default Anyone use the cheap Pioneer 8" Coaxial? Questions

Has anyone used the PIONEER B20EC82-51FX-Q Coaxial Ceiling speaker from parts express?

Click the image to open in full size.

----------------------------------------------------------------------------------
Paper cone with poly foam surround. 2-1/2" tweeter. Full range coaxial offers great fidelity and sound. Perfect for P.A. and ceiling type applications. * Power handling: 35 watts RMS/50 watts max * Voice coil diameter: 1" * Impedance: 8 ohms * Frequency response: 50-18,000 Hz * Magnet weight: 10 oz. * Fs: 50 Hz * SPL: 94 dB 1W/1m * Vas: 2.83 cu. ft. * Xmax: 1.0mm * Qms: 2.51 * Qes: .61 * Qts: .49 * Net weight: 3 lbs. * Manufacturer model number: B20EC82-51FX-Q * Dimensions: A: 8-1/8", B: 7-1/4", C: 3-1/2", D: 3-1/8", E: 1".
------------------------------------------------------------------------------------

I wonder how this would sound (compared to the other Pioneer 8"),mounted like an open baffle speaker, but used with a rear foam baffle like this:
Click the image to open in full size.


Technically would no longer be open baffle dipole, correct?

This pjoject, I want this to be cheap and dirty, quick and fun. I want to build an open baffle-like speaker with reasonable midrange, and later mate this with subs

Wiill I get atleast reasonable midrange results using a low power T-amp, running an open baffle design , using either those Pioneers mentioned or Audio Nirvanas, or Fostex 6.5" varieties?

As I understand Open Baffle is best mated with higher power amps?
But is that mostly to achieve adequate low-end response and overall better dynamics?

Will those foam baffles improve any kind of performance using lower power and the single baffle board design?

thanks
  Reply With Quote
Old 16th January 2007, 06:20 AM   #2
diyAudio Member
 
rcavictim's Avatar
 
Join Date: Jun 2004
Location: Next to an open wormhole NW of Toronto
Those foam `baffles` as you called them are to keep dust and other junk from up in the false ceiling space from falling into the back of the speaker cone I believe. It sure won`t help the bass any and there usually isn`t much bass to be had in a hung false ceiling install anyhow. I don`t see why these should not work OK on open baffles with a T, you meant Tube amp right?

The frequency response shown on the PE website is really ragged in the top end and there is a huge dip at 6 KHz on axis. I`m sure I wouldn`t be able to listen to these and enjoy them. I think you can do better for low dollars with something else.
__________________
"There are more worlds than the one you can hold in your hand." Albert Hosteen, Navajo spiritual elder and code-breaker, X-Files TV Series.
  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
Pioneer B20 Coaxial Tweeter Install db6546 Full Range 13 6th December 2008 02:18 AM
EV PRO-12B Vintage Coaxial Speakers for cheap Bill F. Swap Meet 5 26th June 2008 03:28 AM
suspending a small tweeter in front of woofer for "coaxial" effect? bikehorn Multi-Way 3 2nd January 2006 02:04 PM
"Coaxial" audio output on DVD player - what is data format? Circlotron Digital Source 3 27th February 2003 04:34 PM


New To Site? Need Help?

All times are GMT. The time now is 02:10 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