power acoustik ts-1920-2 amplifier
Printed From: the12volt.comForum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=118588
Printed Date: May 19, 2025 at 2:41 PM
Topic: power acoustik ts-1920-2 amplifier
Posted By: rgv92
Subject: power acoustik ts-1920-2 amplifier
Date Posted: December 16, 2009 at 4:41 PM
Replies:
Posted By: j.reed
Date Posted: December 16, 2009 at 4:47 PM
Manufacturers put there lowest stable rating for a reason. To protect there amps. PA amps are very low quality. If it does work at the load it will not work for long.
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Posted By: rgv92
Date Posted: December 16, 2009 at 4:50 PM
Posted By: j.reed
Date Posted: December 16, 2009 at 5:01 PM
If you want the best ouput possible. Run on that amp run just 2 of the subs in series/parallel. That will give you a 2ohm load and full power out of the amp to the 2. Or you could use series parralel to all 3 but that will be a 3ohm load. You will not see full power nor a difference in output to the ear.
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Posted By: rgv92
Date Posted: December 16, 2009 at 5:08 PM
Posted By: i am an idiot
Date Posted: December 16, 2009 at 5:15 PM
Posted By: j.reed
Date Posted: December 16, 2009 at 5:18 PM
rgv92] wrote:
That would be the way to go, if my amp was 2 ohm stable bridged. it is only 2 ohm stable, per channel in stereo mode. minimum impedance for bridged mode is 4 ohms. also, my subs are 300 rms/600max each. I Had 4 of them at one point, but some idiot put a bag on top of my box and blew a hole in the cone. would i see better results if i were to purchase a replacement, and run 4 12"s?
Yeah i forgot you are using a stereo amp. Series/parallel although would give you a 2ohm load would only utilize on channel, Not so good. That would only give you half the power from your amp. With 2 subs you would want to wire each sub in series giving you a 4ohm load per channel or Bridged you would have to run series/series giving you a 8ohm bridge load, Same power. Getting a 4th sub would infact be best. You would be able to present a 4ohm bridge and extract full power from the amp.
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Posted By: rgv92
Date Posted: December 16, 2009 at 5:22 PM
Posted By: j.reed
Date Posted: December 16, 2009 at 5:29 PM
What i found was
-Ported 1.75cu.ft. 14sq.in. port area per sub.
-Sealed is .5 - 1cu.ft. per sub
The MA site is down right now. I would shoot them an email and see what they recommend.
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-Ported 1.75cu.ft. 14sq.in. port area per sub.
-Sealed is .5 - 1cu.ft. per sub
The MA site is down right now. I would shoot them an email and see what they recommend.
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Posted By: i am an idiot
Date Posted: December 16, 2009 at 5:36 PM
Posted By: j.reed
Date Posted: December 16, 2009 at 5:41 PM
i am an idiot wrote:.
His woofers are dual 4 0hm.
That they are i went off his 1.34 load for 3 and assumed dual 2s. Did not see they are in fact DVC 4ohm drivers. That changes everything.
With 4 you would run 2 per channel at a 4ohm load per channel.
Or again just 2 of them would be best of what you have now. series parallel at a 4ohm bridge load.
DVC 4ohm wire config
You will want to use the 2nd option.
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Posted By: rgv92
Date Posted: December 16, 2009 at 5:52 PM
Posted By: i am an idiot
Date Posted: December 16, 2009 at 5:52 PM
Posted By: j.reed
Date Posted: December 16, 2009 at 5:57 PM
rgv92] wrote:
haha thanks for all the help from both of you, last question: with the 4 12"s, should i use shared air space? or use a divided set up ? which would have highest spl ?
If I am allowed by space, I always run separate chambers. If something happens to one sub the others can play in there recommended enclosure volume. If however you dont have enough room. You can get away with a slightly smaller enclosure if they share the chamber.
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Posted By: rgv92
Date Posted: December 16, 2009 at 6:06 PM
Posted By: rgv92
Date Posted: December 16, 2009 at 6:09 PM
Posted By: j.reed
Date Posted: December 16, 2009 at 6:16 PM
rgv92] wrote:The Ma site is down. I would send them an email asking what they recommend. I have looked 3 places and found 3 different recommendations on enclosure sizes. If sealed and shared im sure it would sound a bit deeper then separate, but if you stayed at the full recommended size for one sub and added it together for all it would get sloppy. ported the port will dictate the tune.
would i achieve a deeper bass if the subs share a chamber? and what airspace would you recommend if i end up building the shared airspace ?
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Posted By: rgv92
Date Posted: December 16, 2009 at 6:34 PM
Posted By: i am an idiot
Date Posted: December 16, 2009 at 7:12 PM
Posted By: t&t tech
Date Posted: December 16, 2009 at 7:19 PM
[QUOTE
It may be possible to repair the hole. It may not look pretty, but I have repaired many.[/QUOTE]
Are you trying to make it up to him, because you blew the hole in his speaker? 
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COMMIT YOUR WAY TO JEHOVAH AND HE WILL ACT IN YOUR BEHALF. PSALMS 37:5
Posted By: i am an idiot
Date Posted: December 16, 2009 at 7:56 PM
He claims I did. I do not remember doing it. But it does sound like something I would do. The worse one that I have repaired so far was a paper cone Eectrovoice 18 that had a 9.6 volt Makita drill pushed through it. You are saying hey that might not be too bad, it went to the trigger.
