what sub with my amp?

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=127499
Printed Date: May 13, 2025 at 8:06 PM

Topic: what sub with my amp?

Posted By: greenej8
Subject: what sub with my amp?
Date Posted: May 30, 2011 at 5:28 PM

Hi, i'm new to this forum and have searched but I can't find (or just can't understand) an anwer to my question. Anyway, to the point.

I've got a Pyramid PBS80 800w 2-Channel bridgable amp. I'm installing this into an 05' chevy colorado crew cab with a single under the rear seat 10" subwoofer.

I'm needing help choosing what subwoofer to go with, I've got to run a shallow mount sub with no more than 3.5" of mount depth. I'm thinking of going with the Alphasonik PSW310X or the Memphis SC10. Both seem like really good subs for a decent price.

My delima is that i'm not sure whether i should use a single 4 Ohm or dual 4 ohm subwoofer with my amp? Both of the subs listed above are between 300w and 400w RMS. I used to have a single Kicker ComVRr 12" on it. I was running the amp bridged and I remember that the sub was a Dual Voice Coil sub but don't know if it was 2 or 4 ohm?

Anyone know what would be the best setup for me to use? I'm not wanting window rattling bass but just something that sounds good. Any help is greatly appreciated. Thanks!

Replies:

Posted By: Ravendarat
Date Posted: May 30, 2011 at 6:21 PM

It depends if your amp is 2 ohm MONO stable or 4 ohm MONO stable. If its stable to 2 ohm mono than go with a dual 4 ohm sub but if its only stable to 4 ohm mono than use a single 4. NOTE I said 2 ohm mono stable, if its 2 ohm stereo stable thats equivalent to 4 ohm mono in which case your using single voice coil.

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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer

Posted By: jmelton86
Date Posted: May 30, 2011 at 6:29 PM

I highly doubt ANY Pyramid 2 channel amplifier is stable down to 2ohms bridged...

Get either:
a single 4ohm sub
OR
a dual 2ohm sub and wire the coils in series to 4ohms and wire it to the bridged output terminals OR wire one voice coil to each stereo output channel

Good Luck!

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Posted By: greenej8
Date Posted: June 02, 2011 at 2:46 PM

Sorry, Just realized my amp is a Pyramid PB580 (not S80). This is all the info i could find on it. Let me know if this will help anyone help me. I have talked with some local shops and they have said also to go with either a single 4ohm or dual 2ohm. I think i may go with the Pioneer TS-SW2501S4. Anyone have any thoughts on this? I'm not needing anything "window shaking" but just needing to add some decent bass to my highs and mids. Thanks again for the help.
400W x 2 Channel Crystal Series Amplifier
800W x 1 Channel Bridged Power Output
Fully Adjustable Electronic Crossover
Variable Bass Boost (0~12dB @ 60Hz)
Digital VU Level Meters
Plexiglas Top Panel
Soft Turn On/Off Circuit
2 Ohm Stereo Stable/Bridgeable into 4 Ohms
MOSFET PWM Power Supply
Variable Gain Control/Remote Turn On
Heavy Duty Aluminum Alloy Heatsink
Hi/Lo Level Gold Plated MOLEX Inputs
Power and Protection LED's
S/N Ratio: >95dB
Frequency Response: 15Hz-30kHz
THD: <0.04%
Fully Protected Circuitry

Posted By: jmelton86
Date Posted: June 02, 2011 at 4:09 PM

Yes, you'll want either a S4 or a D2ohm sub.
I personally would get a D2. Just so, if in the future, you upgrade to a larger amp, you can get a more efficient mono (1 channel) amp that is stable down to 1ohm. -You could wire the coils in parallel (for 1ohm).
1ohm stable mono amps are, in my experience, cheaper than 2ohm stable mono amps.

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001