Welcome to the Piano World Piano Forums
Over 2.7 million posts about pianos, digital pianos, and all types of keyboard instruments
Join the World's Largest Community of Piano Lovers (it's free)
It's Fun to Play the Piano ... Please Pass It On!

SEARCH
Piano Forums & Piano World
(ad)
Piano Life Saver - Dampp Chaser
Dampp Chaser Piano Life Saver
What's Hot!!
PIANO TEACHERS Please read this!
-------------------
European Tour for Piano Lovers
JOIN US FOR THE TOUR!
--------------------
Posting Pictures on the Forums
-------------------
Forums RULES & HELP
-------------------
ADVERTISE on Piano World
(ad)
Best of Piano Buyer
 Best of Piano Buyer
Find a Professional
Our Classified Ads
Find Piano Professionals-

*Piano Dealers - Piano Stores
*Piano Tuners
*Piano Teachers
*Piano Movers
*Piano Restorations
*Piano Manufacturers

Advertise on Piano World

Who's Online Now
101 registered members (anotherscott, 2Be3, Belle2foru, akc42, ando, AZNpiano, 30 invisible), 1,352 guests, and 3 spiders.
Key: Admin, Global Mod, Mod
(ad)
Estonia Pianos
Estonia Pianos
Quick Links to Useful Piano & Music Resources
Quick Links:
*Advertise On Piano World
*Free Piano Newsletter
*Online Piano Recitals
*Piano Recitals Index
*Piano & Music Accessories
*Live Piano Venues
*Music School Listings
* Buying a Piano
*Buying A Acoustic Piano
*Buying a Digital Piano
*Pianos for Sale
*Sell Your Piano
*How Old is My Piano?
*Directory/Site Map
*Virtual Piano
*Music Word Search
*Piano Videos
*Virtual Piano Chords & Scales
Previous Thread
Next Thread
Print Thread
Flat panel speakers DIY for $30 #2736351
05/14/18 10:36 AM
05/14/18 10:36 AM
Joined: Jan 2016
Posts: 989
Milano
N
newer player Offline OP
500 Post Club Member
newer player  Offline OP
500 Post Club Member
N

Joined: Jan 2016
Posts: 989
Milano
You can quickly make these $30 DIY flat panel speakers with a cardboard and a cheap transducer. They hang on the wall like paintings would:

https://youtu.be/zdkyGDqU7xA

They need a bit of help at lower fq, so you could hide some small speaker boxes or subs in the room.
___

This French guy went one step further and put two panels together in a thin box that looks to be about 5cm thick. The shape seems to combine those of a piano and a guitar. I think the front panel emphasizes higher frequencies and the back panel emphasizes lower frequencies. The box and various vents will boost bass and provide some level of tuning.

https://www.youtube.com/watch?v=wd_Loq6Rx0c

Last edited by casinitaly; 05/15/18 04:32 AM. Reason: fixed link
(ad) ROLAND

Click Here

Re: Flat panel speakers DIY for $30 [Re: newer player] #2736396
05/14/18 01:12 PM
05/14/18 01:12 PM
Joined: May 2013
Posts: 223
So Cal
O
Oasismfg Offline
Full Member
Oasismfg  Offline
Full Member
O

Joined: May 2013
Posts: 223
So Cal
I attached transducers from Clark Synthesis to the soundboard of an old upright, and set my Kawai MP11 in place of the old action. The transducers were expensive, but they have great bass response, and the upright was free.

Re: Flat panel speakers DIY for $30 [Re: newer player] #2736404
05/14/18 01:43 PM
05/14/18 01:43 PM
Joined: Jan 2016
Posts: 989
Milano
N
newer player Offline OP
500 Post Club Member
newer player  Offline OP
500 Post Club Member
N

Joined: Jan 2016
Posts: 989
Milano
How did the piano sound with just transducers? Was frequency response relatively even? Did it sound like an acoustic piano?

Re: Flat panel speakers DIY for $30 [Re: newer player] #2736441
05/14/18 03:12 PM
05/14/18 03:12 PM
Joined: May 2013
Posts: 223
So Cal
O
Oasismfg Offline
Full Member
Oasismfg  Offline
Full Member
O

Joined: May 2013
Posts: 223
So Cal
It sounds bass heavy. Analysis with pink noise and an RTA shows it has pretty flat response up to about 1.5 Khz, and then it gently rolls off on the upper octaves. I plan to add a couple smaller transducers through crossover and separate amp to take care of the high end. But even with the high end deficiency it has now, it still sounds better than most speakers, simply because the surface area of the sound board is comparatively huge. It sounds much closer to the real thing.

(ad) SWEETWATER
Sweetwater - Lowest Prices on Gear
Re: Flat panel speakers DIY for $30 [Re: newer player] #2736506
05/14/18 06:05 PM
05/14/18 06:05 PM
Joined: Jan 2016
Posts: 989
Milano
N
newer player Offline OP
500 Post Club Member
newer player  Offline OP
500 Post Club Member
N

Joined: Jan 2016
Posts: 989
Milano
Nice. A cheap way to EQ would be to move the piano around the room, even just a little. Or shuffle the transducers around the soundboard

Rather than add more transducers, I might try using a simple EQ to reduce frequencies below say 1.5KHz. Then turn up the volume.

Come to think of it, I wonder how flat the frequency response of your upright was when it was new. Or how flat it should be. . .

Re: Flat panel speakers DIY for $30 [Re: newer player] #2736512
05/14/18 06:25 PM
05/14/18 06:25 PM
Joined: Jan 2015
Posts: 1,363
Groove On Offline
1000 Post Club Member
Groove On  Offline
1000 Post Club Member

Joined: Jan 2015
Posts: 1,363
I don't think newer player put in the right Youtube link ... the video is worth checking out if you want to try it yourself. Very informative.



We are the music makers,
And we are the dreamers of dreams.
Re: Flat panel speakers DIY for $30 [Re: Groove On] #2736514
05/14/18 06:33 PM
05/14/18 06:33 PM
Joined: Jan 2016
Posts: 989
Milano
N
newer player Offline OP
500 Post Club Member
newer player  Offline OP
500 Post Club Member
N

Joined: Jan 2016
Posts: 989
Milano
Pasted too fast! I asked the moderators to include the correct link which you included GrooveOn. Thanks for that. The video is pretty good.

Re: Flat panel speakers DIY for $30 [Re: newer player] #2736523
05/14/18 07:00 PM
05/14/18 07:00 PM
Joined: Sep 2009
Posts: 7,273
Raleigh, North Carolina
MacMacMac Offline
7000 Post Club Member
MacMacMac  Offline
7000 Post Club Member

Joined: Sep 2009
Posts: 7,273
Raleigh, North Carolina
What's all the excitement about?

Cheap 'ducers and some cardboard?
For only $30 ?
Just how good could they be?

Call me dubious.

Re: Flat panel speakers DIY for $30 [Re: newer player] #2736535
05/14/18 07:29 PM
05/14/18 07:29 PM
Joined: Jan 2015
Posts: 1,363
Groove On Offline
1000 Post Club Member
Groove On  Offline
1000 Post Club Member

Joined: Jan 2015
Posts: 1,363
I've been experimenting myself, that's why I knew the video! thumb It's very useful.

Materials:
It's cool that inexpensive end-grain balsa, extruded polystyrene and palette cardboard were excellent sound boards. I'd love to hear what the piano re-builders think about using End-Grain balsa vs. normal Edge-Grain wood. FYI - if you go to Home Depot, the extruded polystyrene is also listed under "Foamular".

Shape:
I still think a circular shape will give good acoustic performance but I haven't had the time to get my materials cut properly.

Pricing + Amplifier:
$30 is a bit misleading if you don't consider the amplifier. My setup was about US$150 which included a matching amplifier + 2x transducers and several different materials for sound boards:

- Dayton Audio 100 Watt 4 ohm Amplifier
- DAEX32EP-4 Thruster 32mm Exciter 40W 4 Ohm


We are the music makers,
And we are the dreamers of dreams.

Moderated by  Piano World 

(ad)
Pianoteq
PianoTeq Bechstein
(ad)
Sweetwater - Keyboards
Sweetwater
ad
Jazz Piano Online
Jazz Piano Lessons Online

New Topics - Multiple Forums
GEM / Baldwin / General Music RealPiano RP2 faulty
by JayFerris. 01/21/19 07:26 PM
Nord Piano Monitors
by PianoManChuck. 01/21/19 05:38 PM
Questions about Pianoteq 6 and Kawai CA98
by ADWyatt. 01/21/19 01:25 PM
Forum Statistics
Forums40
Topics189,715
Posts2,784,470
Members92,187
Most Online15,252
Mar 21st, 2010
(ad)
Accu-Tuner
Sanderson Accu-Tuner
Please Support Our Advertisers
Dampp Chaser Piano Life Saver

Sweetwater

PianoTeq Petrof
Piano Buyer Spring 2018
Visit our online store for gifts for music lovers


 
Help keep the forums up and running with a donation, any amount is appreciated!
Or by becoming a Subscribing member! Thank-you.
Donate   Subscribe
 
Our Piano Related Classified Ads
| Dealers | Tuners | Lessons | Movers | Restorations | Pianos For Sale | Sell Your Piano |

Advertise on Piano World
| Subscribe | Piano World | PianoSupplies.com | Advertise on Piano World |
| |Contact | Privacy | Legal | About Us | Site Map | Free Newsletter |


copyright 1997 - 2018 Piano World ® all rights reserved
No part of this site may be reproduced without prior written permission
Powered by UBB.threads™ PHP Forum Software 7.6.2