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Posts: 6739 Joined: 13-Apr-2009 Last visit: 10-Apr-2022
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Random question for any audio engineers out there-
Who's making the best 18" subwoofer speakers right now?
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analytical chemist
  
Posts: 7463 Joined: 21-May-2008 Last visit: 09-Aug-2025 Location: the lab
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not an audio engineer but at that size, you can't go wrong with cerwin-vega "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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Posts: 6739 Joined: 13-Apr-2009 Last visit: 10-Apr-2022
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analytical chemist
Posts: 7463 Joined: 21-May-2008 Last visit: 09-Aug-2025 Location: the lab
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wait...is this for home listening, car audio, or pro audio? for pro audio, I'd consider JBL. and then for car audio, there's these  "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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Posts: 6739 Joined: 13-Apr-2009 Last visit: 10-Apr-2022
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I'm thinking 1,000w @ 4 OHM ...
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analytical chemist
Posts: 7463 Joined: 21-May-2008 Last visit: 09-Aug-2025 Location: the lab
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JBL"Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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Posts: 6739 Joined: 13-Apr-2009 Last visit: 10-Apr-2022
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lol, trust me I've drooled over these...
I am building my own 18"... that's why I'm looking for what speakers are the best...
should I just snag one of those speakers in that dual rig?
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analytical chemist
Posts: 7463 Joined: 21-May-2008 Last visit: 09-Aug-2025 Location: the lab
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if i had the money and the use for them, i would. JBL is a highly trusted name in pro audio, like Marshall for guitar/bass guitar amps "Nothing is true, everything is permitted." ~ hassan i sabbah
"Experiments are the only means of attaining knowledge at our disposal. The rest is poetry, imagination." -Max Planck
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Posts: 6739 Joined: 13-Apr-2009 Last visit: 10-Apr-2022
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So, I think I'm going to go with 18" Peavy Lo Rider speaker @ 8 OHM 800W.
03:43:30 ‹Rivea› 112 volts + and 112 volts -... total swing is 224 volts.
31/01/2011 03:43:38 ‹Rivea› P = V^2 * R
31/01/2011 03:44:07 ‹Rivea› 800 = V^2 * 8 (rms value of power and voltage)
31/01/2011 03:44:19 ‹Rivea› 6400 = V^2
31/01/2011 03:44:26 ‹Rivea› V = 80 volts RMS
31/01/2011 03:45:06 ‹Rivea› V (power supply ) = V * 1.4142 (square root of two) = 80 * 1.414 = 112 volts
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No.. that can't be...
Posts: 493 Joined: 21-May-2010 Last visit: 20-May-2025 Location: The assylum
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The amplifier power is most likely limited by its power supply voltage. If it can deliver 400 watts into 4 ohms, it can deliver about the same voltage into an 8 ohm load before the output transistors saturate. Therefore the total power it can deliver into 8 ohms will be about half of that delivered into 4 ohms. I'd estimate that you'll get 200 watts out of the amp into 8 ohms. Everything mentioned herein has been deemed by our staff of expert psychiatrists to be the delusional rantings of a madman who has been treated with Thorazine who is hospitalized within the confines of our locked facility. This patient sometimes requires the application of 6 point leather restraints and electrodes at the temples to break his delusions. Therefore, take everything mentioned above with a grain of salt...
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No.. that can't be...
Posts: 493 Joined: 21-May-2010 Last visit: 20-May-2025 Location: The assylum
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House... speaking of old school, I forgot to mention during our chat. I like my JBLs. I use a couple of E140 woofers in full size reflex cabinet tuned to the resonant frequency of the E140s, some 2370 biradial horns, and slotted diffraction tweeters. The setup is bi-amplified and I use a DBX electronic crossover to split 800 Hz and below to the E140's and 800Hz and above the the horns and tweeters using 200 watts RMS per channel, 4 channels to drive both sides. It is marvelous for my home theater front channel. It sounds like a live band in the house if I put on good CD or wave file. I built up the system myself when I lived in 2000 square foot ware house quite a few years back. The E140's are wound in 4 ohm voice coils so that my ADDCO (an old brand ) amps can deliver their full power into the woofers... It is expensive to find an amp capable of driving 800 watts into 8 ohms unless it is a stereo amp that is bridged.... like we discussed. Everything mentioned herein has been deemed by our staff of expert psychiatrists to be the delusional rantings of a madman who has been treated with Thorazine who is hospitalized within the confines of our locked facility. This patient sometimes requires the application of 6 point leather restraints and electrodes at the temples to break his delusions. Therefore, take everything mentioned above with a grain of salt...
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