amp for testing new speakers - 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 24th July 2014, 10:25 PM   #1
diyAudio Member
 
Join Date: Jul 2005
Location: canada
Default amp for testing new speakers

Hi there!

I'm wondering if any of you have any advice for me regarding amplifiers for testing (and listening) to new sets of speakers.

The reason i'm posting this is that I am 100% new at building speakers and need an amp that can handle a short or a lower than expected ohm rating... But it also needs to sounds decent as this might be used as a listening power amp for my units until I can have a dedicated system.

The amp would be preamp'ed through a computer with a good sound card and my first set of speakers have a woofer with a 6 ohm rating.

Extremely simple first try but I do not want to be burning new hardware on a mistake or miscalculation.


Regards and much appreciate your ideas.

Marc
  Reply With Quote
Old 24th July 2014, 10:34 PM   #2
OllBoll is offline OllBoll  Sweden
diyAudio Member
 
Join Date: Nov 2010
Do you want to get active speakers?

The easiest and most convenient I can think of is if you just get an average AVR that doesn't need to have fancy stuff, just 8 channels of DACs with amplification. When testing you can just use it as a 2-channel DAC+amp and when when you do your own speaker you can buy a nanoAVR to do the crossovers with. You get the ease of active with DSP but won't have to fiddle with a million cables
  Reply With Quote
Old 24th July 2014, 11:13 PM   #3
diyAudio Member
 
Join Date: Jul 2005
Location: canada
these will be traditional passive xr's. They are built sealed and was looking at no more than 25 watts 2 channels of solid power.


Nothing fancy. I am trying to keep it simple. reliability and long term use is key here.


Thank you for your reply.
  Reply With Quote
Old 24th July 2014, 11:39 PM   #4
diyAudio Member
 
Join Date: Jan 2008
Quote:
Originally Posted by exhausted mule View Post
Nothing fancy. I am trying to keep it simple. reliability and long term use is key here.
The Technics receiver I bought around 1996 has survived a few shorts and use at 2 ohms. Sounds quite good.

Don't know if their current offerings are as robust, but if you find a used older model that works, it probably will for a long time.
  Reply With Quote
Old 24th July 2014, 11:48 PM   #5
diyAudio Member
 
vinylkid58's Avatar
 
Join Date: May 2005
Location: Victoria, B.C.
Quote:
Originally Posted by exhausted mule View Post
The amp would be preamp'ed through a computer with a good sound card and my first set of speakers have a woofer with a 6 ohm rating.

Extremely simple first try but I do not want to be burning new hardware on a mistake or miscalculation.
Class D TPA31xx amps seem to be all the rage right now. A built TPA3116 PCB (without power supply) is around $20, depending on source.

Someone in another thread just liked this as an example:

Amazon.com: SMSL SA-36A PRO 2* 20W TPA3118D2DAP Amp Stereo Digital Amplifier + Power Adapter, by Gemini Doctor: Electronics

jeff
  Reply With Quote
Old 24th July 2014, 11:50 PM   #6
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
Quote:
Originally Posted by exhausted mule View Post
Hi there!

need an amp that can handle a short or a lower than expected ohm rating... ideas.

Marc
Just buzz out the speakers for ohms before you connect an amplifier.
Same with your cable if in any doubt.
  Reply With Quote
Old 24th July 2014, 11:50 PM   #7
diyAudio Member
 
Join Date: Jan 2014
The old Quad 303 power amplifier can survive short circuits on the speaker outputs with no trouble. Sounds quite nice too if serviced and speaker load is not an awkward one, i.e no too low an impedance. A low impedance speaker will not damage the amp, but current limiting comes into play to protect it.
  Reply With Quote
Old 25th July 2014, 12:14 AM   #8
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
You should have ohms on your multi-meter.
  Reply With Quote
Old 25th July 2014, 12:14 AM   #9
diyAudio Member
 
Join Date: Jul 2005
Location: canada
Quote:
Originally Posted by vinylkid58 View Post
Class D TPA31xx amps seem to be all the rage right now. A built TPA3116 PCB (without power supply) is around $20, depending on source.

Someone in another thread just liked this as an example:

Amazon.com: SMSL SA-36A PRO 2* 20W TPA3118D2DAP Amp Stereo Digital Amplifier + Power Adapter, by Gemini Doctor: Electronics

jeff
Quote:
Originally Posted by nigelwright7557 View Post
Just buzz out the speakers for ohms before you connect an amplifier.
Same with your cable if in any doubt.
that class D seems good.


Buzz out the speaker? All I have is a multimeter.
  Reply With Quote
Old 25th July 2014, 12:15 AM   #10
diyAudio Member
 
Join Date: Jul 2005
Location: canada
Quote:
Originally Posted by nigelwright7557 View Post
You should have ohms on your multi-meter.
I do but doesn't ohm's change with Hz?



Thanks for the response guys. I have alot options it seems
  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
Using Edirol PCR-1 for testing speakers Mikelo Multi-Way 1 23rd January 2011 07:19 PM
pictures of testing station and speakers to be tested mcmahon48 Multi-Way 1 15th February 2009 01:13 PM
testing speakers and voltmeters.. REDSKIN Multi-Way 1 6th October 2008 02:56 PM
Way of testing a speakers power rating? Gorbee Multi-Way 4 25th August 2006 11:41 PM
Question: I need to build an AB switch for testing speakers Taperwood Full Range 19 23rd March 2006 10:03 PM


New To Site? Need Help?

All times are GMT. The time now is 03:32 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