If you want the best sound quality for your dollar, this 1973-1974 Cutlass Hertz Stereo Kit is probably the best value we offer. Hertz is known for their high-quality speakers and they make some of the best sounding speakers available. With this kit, we offer both the Hertz Dieci series or the Audison Prima series. Both series of speakers are very efficient and sensitive, meaning that the sound quality given the amount of power is far superior than most other speakers on the market. With this Hertz Audison premium kit, we offer your choice of Rockford Fosgate amplifier. We have found that these Rockford amps work very well with the Hertz speakers and they also offer great value with their power output and compact chassis size. This kit includes your choice of Custom Autosound radio, a Hertz/Audison dash speaker, a pair of Hertz/Audison 6x9 speakers, your choice of Rockford Fosgate amplifier, an amplifier wiring kit, 25 feet of speaker wire, and the option to add a subwoofer.
For the radio, we offer three different options, the USA-230, the USA-630, or the USA-740. The USA-230 is a basic AM/FM radio with an auxiliary input. The USA-630 has AM/FM, auxiliary input, a USB port, the option to add Bluetooth, and the option to add an external CD player. The USA-740 has everything the USA-630 has except Bluetooth comes built into the radio instead of an external option. The USA-740 also has a subwoofer pre-out and control, and the LCD display can change between 7 different color options. The USA-740 does not come with the manufacturer's logo like the USA-230 and USA-630 do.
For the speaker options, we offer the Hertz Dieici speakers as well as the option to upgrade to the Audison Prima for applications that fit the dual, 4" dash speaker. The Hertz Dieci speakers sound better than any other speakers at their price point due to the high sensitivity and efficiency. If you want the best of the best, upgrade to the Audison Prima speakers. They do need the amplifier to really get going, but if you have the power, they are flat out the best speakers we offer.
We offer 4 different amplifier options with this kit. If you are going to add a subwoofer, we recommend going with a 5 channel amp. You can make a 4 channel work by bridging the rear channel and just running all 4 speakers off of the front, but we don't recommend it due to tuning and the difference in power handling between the 6x9's and the dash speaker. If you select the Dieci speakers, the 400 watt mini Rockford amp will work great and sound fantastic. If you upgrade to the Audison Prima, upgrade the the Power Mini 400W amp. It will sound better and you will appreciate the better sound quality. Same thing goes for the 5 channel amps. If selecting Dieci speakers and a subwoofer, the Prime 600 watt 5 channel is perfect, the 1000 watt is probably overkill. If you choose to upgrade to the Prima speakers, go with the 1000 watt mini 5 channel.
For the subwoofer, if you are choosing the Dieci speakers, the Hertz DBX25.3 is the sub to go with. If you upgrade to Prima, you can still go with the Hertz sub, but the 10" Audison low profile is an amazing woofer. If you are willing to spend the money for the best by upgrading to the Prima, just cry once, get the Audison sub and smile when you hear your favorite songs sounding just like the artist intended.
Radios
USA-230
Bluetooth
Optional (Add MBT-RX)
Key Features
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AM/FM
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Auxiliary Input (Rear)
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4 Ch. RCA Pre-Outs
USA-630
Bluetooth
Optional (Add BluKit)
Key Features
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AM/FM
⬤
Auxiliary Input (Rear)
⬤
4 Ch. RCA Pre-Outs
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USB Port
⬤
Option to Add CD Player
USA-740
Bluetooth
Yes
Key Features
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AM/FM
⬤
2 Auxiliary Inputs (Front & Rear)
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4 Ch. + Subwoofer Pre-Outs
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USB Port
⬤
Option to Add CD Player
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Selectable 7 Color LCD Display
Speakers
Hertz Dieci
Tweeter Material
PEI Dome (Hard Dome)
Surround
6"x9" & 4" - Rubber; 3.5" - Fabric
Features
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Very sensitive, efficient speakers for superior sound quality
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Play loud, clean, and bright
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Great value for the sound quality
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Audison Prima
Tweeters
40mm Horn + Super Tweeter
Surround
Rubber Triple Wave
Features
⬤
Ultra efficient, 96db sensitivity rating
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Acoustic lens over tweeter to increase dispersion in high frequency rang
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Super tweeter to help very high frequency tones that usually go unheard
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The best sounding speakers we offer. If you want the best, here you go!
If you have the money, the Audison sound amazing. Our best sounding speakers
Amplifiers
Rockford Mini 400W 4 Ch.
Power Rating
50Wx4 @ 4 Ohms
100Wx4 @ 2 Ohms
200Wx2 @ 4 Ohms Bridged
Dimensions
Length: 6.75"
Width: 4.25"
Height: 1.53"
Subwoofer
None - 4 Channel
Features
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Very good 4 channel amplifier
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Perfect if you don't want a subwoofer
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Blows away just wiring your speakers to your radio
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Super Compact Chassis
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Plenty of power for the dash speaker and the 6x9s.
Audison SR 520W 4 Ch.
Power Rating
85Wx4 @ 4 Ohms
130Wx4 @ 2 Ohms
250Wx2 @ 4 Ohms Bridged
Dimensions
Length: 7.48"
Width: 6.10"
Height: 1.87"
Subwoofer
None - 4 Channel
Features
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Super clean power.
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Noticeable sound quality difference over the Rockford 4 channel
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Super efficient class D circuitry with 85 watts of clean power
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Sleek, black compact chassis
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One of the best values for a "step-up" 4 channel amplifier
Rockford R2-750W 5 Ch.
Power Rating
50Wx4 + 200x1 @ 4 Ohms
75Wx4 + 500x1 @ 2 Ohms
Dimensions
Length: 11.2"
Width: 6.8"
Height: 1.9"
Subwoofer
Any
Features
⬤
Great 5 channel amp for the price
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Perfect power for the 4 speakers and the subwoofer
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Accepts both high and low level inputs
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Selectable 2/4/5 input switch
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Bass knob included
Audison SR 1000W 5 Ch.
Power Rating
75Wx4 + 330Wx1 @ 4 Ohms
115Wx4 + 550Wx1 @ 2 Ohms
Dimensions
Length: 11.57"
Width: 6.1"
Height: 1.87"
Subwoofer
JL TW1, JL TW3, Audison Prima
Features
⬤
A step up in output over the Rockford R2-750x5
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Perfect power for the 4 speakers and the subwoofer
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One of the best 5 channel amplifiers available.
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Selectable 2/4/5 input switch
Subwoofers
Hertz 10" DBX25.3
Power Handling
150W RMS
600W Peak
Dimensions
Width: 17.4"
Height: 11.7"
Depth: 8.9"
Wired Impedance
4 Ohms
Features
⬤
Will enhance sound quality by filling in the bottom end of your music
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Slanted rear wall for easy fitment against the back of your rear seat
Audison Prima 10"
Power Handling
400W RMS
800W Peak
Dimensions
Width: 18.58"
Height: 13.15"
Depth: 4.72"
Wired Impedence
2 Ohms
Features
⬤
Down-firing design for flexible mounting options
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All-around fantastic woofer
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Tight, clean bass for all types of music
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Unbelievable output for an enclosure this small
Kicker Comp RT 10" Down Firing
Power Handling
400W RMS
800W Peak
Dimensions
Width: 25-5/8"
Height: 13-1/4"
Depth: 5-5/8"
Wired Impedence
2 Ohms
Features
⬤
Down-firing design for flexible mounting options
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Low profile woofer with full size output
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The acoustics of this enclosure outperform the standard 10" Comp RT with the down firing design.
JL Audio 10" TW1
Power Handling
300W RMS
600W Peak
Dimensions
Width: 15.0"
Height: 11.75"
Depth: 5.53"
Wired Impedance
2 Ohms
Features
⬤
Low Profile box with significantly with output that will surprise you
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At only 5.5" deep, it can fit virtually anywhere while still leaving space for storage
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Although it handles less power, the TW1 is cleaner and has more output than the Kicker 10"
JL Audio 12" TW3
Power Handling
400W RMS
800W Peak
Dimensions
Width: 23.75"
Height: 15.625"
Depth: 5.0625"
Wired Impedance
2 Ohms
Features
⬤
The best low-profile subwoofer available
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More power handling allows for more output than the TW1
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If you want a low-profile subwoofer and you want the best, this is it.