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Soundstream ST1-700D

Mono subwoofer amplifier — 350 watts RMS at 2 ohms

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  • Soundstream ST1-700D

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  • Soundstream ST1-700D

  • Soundstream ST1-700D

  • Soundstream ST1-700D

  • Soundstream ST1-700D

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Our take on the Soundstream ST1-700D

by Bob Bihlmayer
Soundstream

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Big sound, small package

Are you struggling to find the space for great sound in your ride? If you're in need of an amplifier that takes up a small space but delivers a big sound, Soundstream's Stealth amp line can fill the bill. At 3" wide by 6-1/2" long, the ST1.700D mono amplifier will fit just about anywhere, delivering up to 350 watts of sub-shaking signal at 2 ohms. That's a lot of power in a tiny package.

You're in control

The ST1.700D also features high- and low-level inputs for a variety of applications, and includes low-pass and subsonic filters to help you tailor your sound. And Soundstream built this amp for the long haul, with a MOSFET power supply and military-spec circuit board, surrounded by an aluminum alloy heatsink and guarded by full short-circuit, thermal, and overload protection circuitry. This Soundstream Stealth amp will help you to take a big step towards great sound.

Highlights:

  • mono subwoofer amplifier
  • 250 watts RMS at 4 ohms (350 watts RMS at 2 ohms)
  • switchable low-pass and subsonic filters
  • bass boost (0-12 db at 45 Hz)
  • Class D amp technology
  • MOSFET power supply
  • preamp and speaker-level inputs
  • includes dash-mount gain control
  • fuse rating: 30 amps
  • 10-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • dimensions: 6-1/2"L x 3"W x 1.5"H
  • warranty: 1 year
  • Our 60-day money-back guarantee
Preliminary info from the manufacturer
Features and Specs
Performance
RMS Power Output (Watts x Channels)
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250 x 1
Peak Power Output (Watts x Channels)
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---
Power at 2 Ohms (Watts x Channels)
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350 x 1
Bridged Power (Watts x Channels)
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---
Minimum Impedance Bridged
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---
Minimum Impedance Unbridged
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---
Best Frequency Response
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THD at Rated RMS Power
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Signal to Noise Ratio
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Input Voltage
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Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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Y
Low-Pass Slope (dB/octave)
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---
High-Pass Crossover Frequency
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Y
High-Pass Slope (dB/octave)
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Bass Boost
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Bass Boost Frequency
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Fan Cooled
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Fuse Rating
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Speaker Level Inputs
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1 pair
Preamp Outputs
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Width (inches)
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3
Height (inches)
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1-1/2
Depth (inches)
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6-1/2
Parts Warranty
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1 year
Labor Warranty
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1 year
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Soundstream ST1-700D Reviews

Average Customer Review:

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5 out of 5

problem solved

Written By Brubetech, Crawfordsville, IN on Sunday, July 06, 2014
Crutchfield Customer Review (What's this?)
 
Installing a sub in my classic corvette was stressful. I needed to maintain the look and t-top storage while adding some low end. I fabricated a small compartment in of of the three compartment doors for an 8 inch sub. I needed a small amp that would provide decent power, having used sound stream in the past I give this one a shot. Couldn't be happier, this little amp provides serious power & Sound Stream quality. Pushing 250 watts at 4 ohms to a 8 inch Kicker Comp provided more bass than i expected. Very happy with my choice planning to add the 4 channel version for the 6x9's and 4x6's soon.
Pros:
Lots of power from a very small package, Sound Stream quality, and low price. This amp is worth twice the price.
Cons:
The wiring harness's can make cable management interesting, but well worth the trade off
2 out of 2 people found this helpful
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1 question already asked

I'm looking to add to my factory head unit and thus use the high level inputs. Is this amp capable of not needing the remote turn on wire and instead sensing / using the signal from the high level inputs to turn on? Thank you in advance. [ Michael  Jul 21, 2014 ]
1 answer
  • I forwarded your question to an Advisor and they responded with the following: The amp has auto-turn-on capability via high input signal, so yep. Make sure they don't skimp on amp wiring. I recommend 575RFK10. If you would like to discuss further you can contact an Advisor directly by phone (1-800-324-9695) or online chat. [ Krissy Staff  Jul 22, 2014 ]

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For a more in-depth review and enhanced detailed information on the Soundstream ST1-700D, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_530ST1700D/Soundstream-ST1-700D.html ).