12" fi BL: Memphis 16-mc1000d or DLS Ultimate A6

[spark plugs. 10+ year member]

i currently have this amp:

http://www.woofersetc.com/index.cfm?fuseaction=product.display&Product_ID=2990

Product Description:

1100W RMS Class-D Monoblock Subwoofer Amplifier

Custom Black Pearl Finish

Fully Variable Low-Pass Filter: 50 - 250 Hz, 18 dB/Oct

Variable Subsonic Filter: 20 - 50 Hz

Bass Boost: 0 - 18 dB

Gold-Plated RCA Connectors

4 Gauge Power Wire Capability

Wired Remote Gain Control

Power and Protection LEDs

Thermal, Short Circuit, and Overload Protection

RCA Outputs: 1 Pair

Adjustable Input Level Control: 400 mV - 4V

Damping Factor: 300

DImensions: 13.4" L x 6.25" W x 1.7" H

1-year Sonic Electronix warranty

Amplifier Specifications:

Amplifier Class N/A

Number of Channels 1 - Mono

RMS Power (4 ohms) 300 watts x 1 channel

RMS Power (2 ohms) 600 watts x 1 channel

RMS Power (1 ohm) 1100 watts x 1 channel

Bridged RMS Power Not Bridgeable

Peak Power Output 2200 watts

Minimum Impedance Unbridged 1 ohm

Minimum Impedance Bridged Not Bridgeable ohms

THD at Rated RMS Power 0.75%

Speaker Level Inputs No

Preamp Outputs Yes - 1 pair

Built-in Crossover LPF(50 - 250 Hz), Subsonic(20 - 50 Hz)

High-Pass Crossover Frequency N/A

Low-Pass Crossover Frequency N/A

Subsonic Filter N/A

Signal-to-Noise Ratio 95 dB

Channel Separation N/A

Bass Boost 0 - 18 dB

Bass/Gain Remote N/A

Fan Cooled N/A

Fuse Rating 40 A x 2

but someone i know is willing to pay me an excellent price for that amp and i'm considering getting a DLS Ultimate A6.

Product Features

RMS output per channel at 13,8 volts,

Mode : AB

Number of channels : 1 (for subwoofer use)

Output power in 4 ohm : 500 W

Output power in 2 ohm : 870 W

Output power in 1 ohm : 1200 W

S / N ratio, A-weighted : > 100 dB

Damping factor : > 200

Input impedance : > 10 kohm

Input sensitivity, variable : 0,2 - 7 V

Filters : Lowpass: 50-125 Hz. Subsonic: 25 Hz

Terminal for external cooling fan : Yes

Dual DC-inputs : Yes

Phase control 0-180 degrees : Yes

Remote sub level control with phase shift : Yes

Current draw, idle : 0,6 A

Current draw, maximum : 140 A

Dimensions W x D x H : 410 x 240 x 73 mm (16,15 x 9,45 x 2,87 inch)

Product Description

ULTIMATE series A6. A 1 ohm stable monoblock that´s perfect for SPL. Extremely powerful power supply. The output power in 4 ohms are 500 thrue RMS watts. A cooling fan is built in but the amplifier also provides a built-in fan control for external cooling fan.

Built-in, variable 50-125 Hz low-pass filter for subwoofers plus a 25 Hz subsonic filter with an 18 dB/octave slope. Dual power terminals where you can connect dual power feeds or a DLS Power Cap. Extra features are a phase control variable 0-180 degrees continiously.

A remote sub level control is included. Adjust the sub level and phase from the front seat!

Heavy-duty capacitors act as a buffer zone between your amp and your car's electrical system. They store up a reservoir of power, which can supply the amplifier's peak demands (like a kick drum beat) without having to get additional current from the battery. All amplifiers have built-in capacitors, though high-performance amps use larger, more effective ones. External capacitors connect to the power cable just before it reaches your amplifier.

Also called an infrasonic filter, a subsonic filter cuts off extremely low bass (below the range of human hearing) that many speakers cannot effectively reproduce, thereby making the amp's power supply and output devices, and the speaker, more efficient.

The amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds. When choosing an amplifier, the RMS rating is the power rating you should pay most attention to.

The unit of measurement for impedance or resistance. It tells you how much a device will resist the flow of current. If you take two signals of exactly the same strength and send one to a 4-ohm speaker and the other to an 8-ohm speaker, twice as much current will flow through the 4-ohm speaker. In other words, the 8-ohm speaker will require twice as much power (wattage) to play at the same volume.

Also called an infrasonic filter, a subsonic filter cuts off extremely low bass (below the range of human hearing) that many speakers cannot effectively reproduce, thereby making the amp's power supply and output devices, and the speaker, more efficient.

The unit of measurement for impedance or resistance. It tells you how much a device will resist the flow of current. If you take two signals of exactly the same strength and send one to a 4-ohm speaker and the other to an 8-ohm speaker, twice as much current will flow through the 4-ohm speaker. In other words, the 8-ohm speaker will require twice as much power (wattage) to play at the same volume.

The unit of measurement for impedance or resistance. It tells you how much a device will resist the flow of current. If you take two signals of exactly the same strength and send one to a 4-ohm speaker and the other to an 8-ohm speaker, twice as much current will flow through the 4-ohm speaker. In other words, the 8-ohm speaker will require twice as much power (wattage) to play at the same volume.

The unit of measurement for impedance or resistance. It tells you how much a device will resist the flow of current. If you take two signals of exactly the same strength and send one to a 4-ohm speaker and the other to an 8-ohm speaker, twice as much current will flow through the 4-ohm speaker. In other words, the 8-ohm speaker will require twice as much power (wattage) to play at the same volume.

The amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds. When choosing an amplifier, the RMS rating is the power rating you should pay most attention to.

is this is a good idea? will there be any difference switching from a class d amplifier to a class ab?

Click to read more...

 

[x2o 10+ year member]

Link doesn't work :\

Class a/b amps are noticeably less efficient (10-25% lower in most cases) but are still good. If you fix the link, it would be easier to help you //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

DLS Ultimate A6 1200w Specs :

# Nominal power in 4 ohm: 500 W

# Nominal power in 2 ohm: 870 W

# Nominal power in 1 ohm: 1200 W

Memphis 16-MCD1000 (guessing this is the amp you meant?)

* 300 watts x 1 chan. @ 4 ohms

* 600 watts x 1 chan. @ 2 ohms

* 1100 watts x 1 chan. @ 1 ohm

Assuming these do rated power, I'd go for the DLS if you want it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Other than a loss of efficiency, it's a pretty similar amp. Also, class a/b's have an arguably better SQ, although this is very debatable

 

[spark plugs. 10+ year member]

Link doesn't work :\
Class a/b amps are noticeably less efficient (10-25% lower in most cases) but are still good. If you fix the link, it would be easier to help you //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif

DLS Ultimate A6 1200w Specs :

# Nominal power in 4 ohm: 500 W

# Nominal power in 2 ohm: 870 W

# Nominal power in 1 ohm: 1200 W

Memphis 16-MCD1000 (guessing this is the amp you meant?)

* 300 watts x 1 chan. @ 4 ohms

* 600 watts x 1 chan. @ 2 ohms

* 1100 watts x 1 chan. @ 1 ohm

Assuming these do rated power, I'd go for the DLS if you want it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif Other than a loss of efficiency, it's a pretty similar amp. Also, class a/b's have an arguably better SQ, although this is very debatable

i actually have the 16-mc1000d, it's the older version. it's smaller and neater, but i don't know what improvements are made on the newer one.

 

[spark plugs. 10+ year member]

anyone?

 

[IgnoreMe 5,000+ posts]

yea get something with 1500+ watts.

1kw is not nearly enough to get bl's moving. i know there rated for 1kw, but honestly i wasnt happy with 1.4kw a piece. the suspension is too stiff, and needs some real power to get them moving.

 

[spark plugs. 10+ year member]

bump

 

[Johnny Drama 5,000+ posts]

Stick with the memphis for several reasons.

1)you wont hear a differnce in the distortion or sound that someone mentioned between the class D and A/B Not on a subwoofer for sure.

2)the memphis will have less current draw for the same amount of power

3)they are of the same build quality

4)you already have a great amp

5)you dont need 1.4kw on a sub that is for one rated at 1k for 2 you just dont need 1.4kw daily IMO.

I own the an older MCD1000, its the same board. They did do a couple of adjustments from what I hear to them to make rated power at a lower THD. Mine is rated at 1.5% THD at 1100 RMS. New ones are 1% I think. Either way still not audible.

 

[Audio Master 10+ year member]

if you go a/b amp you may drop some dee bees as has happen to a few competitors here in oz

 

[60_cent 10+ year member]

I love Memphis amps, not sure about the other..

 

[spark plugs. 10+ year member]

so i'm probably better off sticking with the memphis?