MTX Audio JackHammer Strapping Thunder Amplifiers, Electrical System Upgrades, Figure Figure

STRAPPING THUNDER AMPLIFIERS

Strapping amplifiers brings two mono-block amps together and unleashes the power of both into a single

PHASE 0 180

channel configuration. Think of it like a bridged 2-channel amp which takes a left channel and a right channel and combines them into one output. Strapping is essentially the same process. One of the mono-block amps serves as “one channel” and the other mono-block amp as the “second channel.” The primary difference is that the two mono-block amps are not in the same heatsink like the channels of a 2-channel amp.

Strapping requires that the two mono-block amps function as one, so they must be setup to work together. Both amps need to receive the same exact signal, same exact level of signal, same exact voltage, etc... Just follow this guide to build the Biggest, Baddest, Boldest system...ever.

It has never been easier to strap two MTX Thunder TA92001s, or even two Thunder TA81001s, together to get maximum power from these super amplifiers. When strapped, expect power output to exceed 6,000 watts RMS for two TA92001 amps with a current draw around 600 amps. Or, for two TA81001 amps, over 3,000 watts of RMS power with a current draw of around 300 amps (Table 1).

ELECTRICAL SYSTEM UPGRADES

When strapping Thunder Amplifiers, it is important to remember that to get the desired power from them, you need to supply them with the power they require. You must upgrade the stock battery and add additional batteries to the system. We recommend a minimum of three batteries with a cold cranking amp (CCA) rating of 725 or more. Please remember to install a minimum of 1/0 AWG StreetWires power and ground cable for each alternator. Two 200 amp or greater alternators are strongly recommend for this system because these amplifiers are capable of pulling more than 600 amps. After your bank of minimum three batteries, you will need to run 1/0 wire to each amplifier. Just adding extra batteries will not solve the need for power. It will actually put more of a load on the alternator, in turn yielding less power to the audio system.

MTX Audio recommends West Co. SVR80 or SVR100 because they are a sealed battery that can be mounted in any configuration and supply the power needed, and high-output alternators from either Ohio Generator or PowerMaster.

Table 1: RMS Power Output for Strapped Thunder Amplifiers

	Two TA92001	Two TA81001
14.4Vdc @ 4Ω	4000 Watts	2000 Watts

Figure 1

Figure 2

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4 AWG

1/0 AWG

14.4Vdc @ 2Ω 6000 Watts 3000 Watts

(wattage is combined power from all amps)

STRAPPING TWO TA92001 AMPLIFIERS

To successfully strap two TA92001 amplifiers, follow the process outlined here carefully. It details how to configure each amp so one becomes the “positive” (Push) amplifier and the other becomes the “negative” (Pull) amplifier.

1.Connect the amplifiers’ power, ground, and remote but do not supply the 12 volts from the batteries to the amplifiers until later in the process.

2.Label the first amplifier as the Positive amp. Set the phase switch on this amp to 0˚. Label the second amplifier as the Negative amp and set the phase switch on this amp to 180˚ (Figure 1).

3.Using a “Y” adapter, split the “Left” side of the RCA output from the source to the “Left” RCA input receptacles on each amp. Using another “Y” adapter, split the “Right” side of the RCA output from the source to the “Right” RCA input receptacles on each amp (Figure 1).

Note: Only the positive speaker terminals on each amplifier will be used.

4.Connect the positive side of the speaker wire to the “positive” speaker terminal of the amplifier labeled Positive. Connect the negative side of the speaker wire to the “positive” speaker terminal of the amp labeled Negative (Figure 2).

Note: The voice coils on the JackHammer must be paralleled (Figure 2). Be sure that the impedance of the subwoofer is no lower than a 2 ohm load to avoid possible damage to the amplifier.

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Amplifier driving JackHammer’s negative terminal of 2nd Voice Coil

Amplifier driving JackHammer’s positive terminal of 1st Voice Coil

8 AWG

8 AWG

Minimum 8awg

Speaker wire

16AWG

1/0 AWG

4 AWG Amplifier’s main power terminals

Woofer Terminal Connection (2 ohm connection)