CurtPalme.com Home Theater Forum

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

i am looking at a dual 15 2000 watt its 1600.00
i have a 32 foot by 24 foot room i want something to FILL the room.
any opinions at all are welcome.
thank you

**Curt Palme** · Posted: Sun Nov 24, 2024 12:48 am Post subject:

I don't know the brand at all, but I don't trust much that Monoprice sells. Why not get a dual 15" passive sub off Marketplace, and add a pro power amp in bridged mono mode? If you shop a bit, you should be able to get something from JBL or EAW for the speakers, and something like a good Crown or QSC power amp for about $500-600 total.

<edit> to clarify my point, their specs on this on the main page are already BS. A 15 amp outlet puts out 1800 watts RMS, yet their amp in the speaker apparently puts out 2000W RMS. Unless they specify that it gets put on a 20 amp circuit (2400 watts total), then their wattage numbers are padded to sound more impressive.

**kal** · Posted: Sun Nov 24, 2024 3:41 pm Post subject:

Monoprice started selling/making cables but they branched out into higher end audio back in 2015, and some of their products are highly regarded probably because they *aren't* actually built by them. Many of their Class A/B amps for example are designed/built in the USA by ATI who's a very well regarded amp seller who also builds for Outlaw, Lexicon Mark Levinson, Theta and B&K, to name a few. Same innards, but different faceplates (for the most part).

I only know this because I'm currently in the market for a couple of their 7x200 amps myself. Wink

So I wouldn't discount them just from the Monoprice name alone as they may not actually be made by them.

I don't know about their subs however... I would search around a bit and see if they are in fact monoprice designed/made and see what you find.

Kal

**Curt Palme** · Posted: Tue Nov 26, 2024 1:05 am Post subject:

**kal** · Posted: Tue Nov 26, 2024 2:02 am Post subject:

I completely forgot about that!

But in all honesty, that was probably because they had no idea what they were selling (also not a good thing). Wink

Kal

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

I heard one. im impressed, with everything about it.

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

So I bought the monolith. It took 3 of us and a real good cart to get it in the basement. It weighs 200 pounds and it feels like 300. I am very happy with it
other than the fact that it is a real bitch to move. Im impressed with it actually. It doesnt play like any other sub ive heard, its hard to describe. In a word,
impressive. I did put it on its own 20 amp breaker per curts advice. Trying to find the right spot for it will be a PITA. Where i would like to put it is dead center
under the center channel on its side. Pretty sure that wouldnt be a good location though. It definitely fills the room though.

**kal** · Posted: Sun Dec 08, 2024 10:30 pm Post subject:

Congrats!

Sub location can really vary given how low frequencies aren't really directional. It doesn't have to be centered at all. If your preamp or receiver has a mic with bass management software you'll be able to play around and find what works.

Kal

garyfritz · Joined: 08 Apr 2006 Posts: 12088 Location: Fort Collins, CO

Low freqs aren't directional, but placement against walls/etc makes a big difference. With the long wavelengths of low freqs, placing it against a wall will almost double the perceived loudness -- the waves bounce off the wall/floor and reinforce each other. Putting it in a corner can almost double it again. So putting it under the center might sacrifice some bass. But with your 200lb behemoth that might not be a problem !!

**kal** · Posted: Sun Dec 08, 2024 11:32 pm Post subject:

Good points Gary!

Kal

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

it would be 3 feet away from the wall but it would have to be on its side. The center of the room would be ideal as far as placement goes. I dont think
the sound will be an issue ( I hope not anyway). As long as it wouldnt make the center sound softer I think it would sound great. It would only be about
14 feet from the main listening position. I hope that isnt an issue. I guess I can try it. The only other spot that works well (because of its size) is the
very back of the room behind the MLP. I would prefer to keep that area open if possible. It would be about 11 feet behind MLP. I doubt 3 feet would matter
but I am guessing. It really sucks trying to move it around by myself. 2 people doesnt help much though.
I do have a question though, do you measure off the wall by the front of the speaker or the back. I have been measuring off the back.

**kal** · Posted: Thu Dec 12, 2024 6:23 pm Post subject:

jeffslife · Joined: 17 Apr 2010 Posts: 4190 Location: ohio usa

What I meant was actual physical distance in the speaker placement, I measure the distance from the wall to the back side of the speaker.
I have them all 3 feet from the wall.

**kal** · Posted: Sat Dec 14, 2024 2:17 pm Post subject:

You don't place a sub by measuring actual physical distances. There's no way to do that as you have no idea what the response will be like. You measure the response with a microphone as you adjust the sub position.

People will use free software like REW (room eq wizard): https://www.roomeqwizard.com/

More recent receivers and pre-pros have these sorts of tools built-in and come with a mic, and will even adjust the response for you to 'compensate' for speaker placement/room issues. Always best to get the best positioning / best response possible first so that the software doesn't have to adjust as much. This is what I do with the Anthem ARC software meant for my Anthem AVM70 pre-pro. It came with a mic and software. I played around with multiple sub positions with the software running to find the best spot I could use then the correction software fixes what it can.

Kal