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  1. #1

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    Default 1800 watt class d mono amp

    how does a mono amp work i have 2 15 polk 400/800 rms/peak and a 1800 watt max amp it is 500 watts x 1 chan. @ 4 ohms 900 watts x 1 chan. @ 2 ohm...will that be okay? also how does mono work, is it the 500 is split so 250 wat by 250 watt will 900 watt peak to both subs?

  2. #2

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    A mono amp is just one channel. Your amp may have 4 speaker terminals, but both negs, and pos terminals are actually tied together. This makes it easy to hook up two speakers. How many ohms are your subs?
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
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    there dual 4 ohms...i have both of them hook up at 4 ohms. so the ++-- on the amp are tied together so that means the 500 watt x 1 chan is split right. so there's only 250 watt goin into both speakers then? and is the 1800 watt peak split so then the peak is 900 watt for each?

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    If you got 2 subs @ 4 ohms hooked to amp together ++-- then the amp sees 2 ohms and your feeding them the 900 watts. But you're correct whatever the amp pushes the 2 subs will split the feed equally together.

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  5. #5

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    Dual 4 ohm vc's each. Ok read the instruction carefully on wiring each sub for 8ohms then parallel the two subs at the amp for a 4ohm load. This will give each sub 250 watts. Even though you can get more out of wiring for 1 ohm you may like the SQ at a 4ohm load more. Try it.
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
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  6. #6

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    You may want to move this to the car audio section. Those guys know much more than I about car stuff.
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
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    Here is the deal with that amp.....

    -Mono Amp = 1 channel - only 1 positive and 1 negative terminal.

    Are you speakers DVC (dual voice coil)? You better hope your amp is 1 ohm stable running 2 DVC subs because you'll be dipping down below 2 ohms for sure!!

    You generally do the following:
    a. Buy a mono amp and 2 single voice coil subs - amp will be running at about 2 ohms
    b. Buy a 2-channel amp and 2 DVC subs - run them in stereo (will be running at about 2 ohms)
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  8. #8

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    Quote Originally Posted by curved View Post
    Here is the deal with that amp.....

    -Mono Amp = 1 channel - only 1 positive and 1 negative terminal.

    Are you speakers DVC (dual voice coil)? You better hope your amp is 1 ohm stable running 2 DVC subs because you'll be dipping down below 2 ohms for sure!!

    You generally do the following:
    a. Buy a mono amp and 2 single voice coil subs - amp will be running at about 2 ohms
    b. Buy a 2-channel amp and 2 DVC subs - run them in stereo (will be running at about 2 ohms)
    Or wire them for 4 ohms;)
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
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    Ben

  9. #9

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    Quote Originally Posted by ben62670 View Post
    Or wire them for 4 ohms;)
    You can't do that with a mono amp and DVC subs. Each voice coil has it's own positive and negative connection. Running 1 4 ohm DVC sub on a mono amp will have you dipping below 4 ohms. I thought it is roughly 2.7ohms. It's been a while since my car stereo days though. ;)
    Living Room:.................... Zone 2 (Workout Room):
    AVR - Yamaha RX-V757......JBL 4312 Pro Monitors
    Pre - Nak CA-5
    AMP - Adcom 555 (Main)
    Main - Polk RTI8**/RTiA5
    AMP - Adcom 545II (Center)
    Center - Polk CSiA4**
    Sub - Snell Basis 300:p......Zone 3 (Outside)
    CD - Yamaha CDC-555.......Def Tech AW5500
    TV - Pani TH-42PZ80U
    BR - LG BD390
    Monster HTS1600 Power Center
    Dedicated Circuit - (2) 20amp, (1) 15amp
    Ben's IC, Canare 4S11

    **Dayton and Sonicap Caps with Mills Resistors**

  10. #10

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    It actually works pretty good. Less watts per sub, but not a big difference. Most half way decent sub amps are 1 ohm stable, but I don't like less than 2 ohms. Wire the VC's in series, and hook them up to the amp.
    Joker pretend that the two speaker terminals are one, because that is what they really are;)
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben

  11. #11

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    If it's gonna be crossed over below 100 Hz and the sole intent is to make noise than less than 2 ohms will be fine. Just might be a bit muddy and you will be pushing that amp hard.

    So if you wanna go boom, wire for 1 ohm as long as the amp is 1 ohm stable. if you want clean sound, a 4 ohm load is the way to go.
    You're just jealous 'cause the voices don't talk to you!

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