About the Soundstream Reserve RSM4.1200D
Tiny giant
Soundstream packed an unbelievable amount of power in this tiny, hand-sized RSM4.1200D amplifier that'll fit in almost anywhere in your car — putting out 75 watts RMS to each of your front and rear speakers. You can also bridge the rear channels to blast a subwoofer with 220 watts RMS while powering the fronts with 75 watts each. And this amplifier generates all this power from a chassis with a footprint of 7" by 3-3/4", with a Class-D design that keeps heat and current draw to a minimum.
Tiny giant
Soundstream packed an unbelievable amount of power in this tiny, hand-sized RSM4.1200D amplifier that'll fit in almost anywhere in your car — putting out 75 watts RMS to each of your front and rear speakers. You can also bridge the rear channels to blast a subwoofer with 220 watts RMS while powering the fronts with 75 watts each. And this amplifier generates all this power from a chassis with a footprint of 7" by 3-3/4", with a Class-D design that keeps heat and current draw to a minimum.
Soundstream Reserve
Soundstream pays attention: they know that Crutchfield offers free lifetime tech support for the gear we sell — and that's one of the reasons why we can offer you their Reserve line of super-compact and very powerful car amplifiers.
RSM4.1200D connections and controls
Product highlights:
- 4-channel car amplifier
- 75 watts RMS x 4 at 4 ohms
- 110 watts RMS x 4 at 2 ohms
- 220 watts x 2 bridged at 4 ohms
- variable high- and low-pass filters (35-250 Hz, 12 dB/octave)
- Class D amp technology
- preamp and speaker-level inputs
- wiring and hardware not included with amplifier
- 10-gauge power and ground wire recommended
- fuse rating: 30A x 1
- dimensions: 7-3/4"W x 1-13/16"H x 3-3/4"D
- warranty: 3 years
- MFR # RSM4.1200D
What's in the box:
Soundstream Reserve RSM4.1200D owner's manual
- 4-channel amplifier
- Two 30-amp ATM fuses (one installed/ one spare)
- Two 8" Speaker level input harnesses
- Four 5/8" Screws
- Owner's manual
Customer reviews for Soundstream Reserve RSM4.1200D
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Crutchfield response
More details on the Soundstream Reserve RSM4.1200D
Researched by Crutchfield's Mark G.
Features & specs
| Performance | ||
|---|---|---|
| RMS Power Output (Watts x Channels) |
75 x 4 | |
| Peak Power Output (Watts x Channels) | 300 x 4 | |
| Power at 2 Ohms (Watts x Channels) | 110 x 4 | |
| Power at 1 Ohm (Watts x Channels) | --- | |
| Bridged Power (Watts x Channels) | 220 x 2 | |
| Minimum Impedance Bridged | 4 | |
| Minimum Impedance Unbridged | 2 | |
| Minimum Impedance | 2 | |
| Best Frequency Response | 20-20k Hz | |
| THD at Rated RMS Power | 0.05% | |
| Signal to Noise Ratio | 90 dB | |
| Input Voltage | --- | |
| Features | ||
| Amplifier Class | D | |
| Low-Pass Crossover Frequency | 35-250 Hz | |
| Low-Pass Slope (dB/octave) | 12 dB/octave | |
| High-Pass Crossover Frequency | 35-250 Hz | |
| High-Pass Slope (dB/octave) | 12 dB/octave | |
| Bass Boost | No | |
| Bass Boost Frequency | N/A | |
| Fan Cooled | No | |
| Fuse Rating | 30 | |
| Speaker Level Inputs | Yes | |
| Preamp Outputs | No | |
| Width (inches) | 7-3/4 | |
| Height (inches) | 1-13/16 | |
| Depth (inches) | 3-3/4 | |
| Parts Warranty | 3 Years | |
| Labor Warranty | 3 Years | |
Product Research
Features
Channel Configuration: The SoundStream RSM4.1200D is a 4-channel amp; essentially two full range 2-channel amps built into one chassis. Both amplifier sections are bridgeable, so it can be configured as a 4-channel, 3-channel, or 2-channel amplifier.
- Power Output:
- 4Ω: 75 watts RMS x 4-channels
- 2Ω: 110 watts RMS x 4-channels
- Bridged: 220 watts RMS x 2-channels into 4Ω
Controls
- Gain: The input levels are independently adjustable for the front and rear channels. The input range is 0.25 volts to 6.0 volts.
- Crossover: The amp has independent
crossover controls for the front and rear channels. The
crossover slopes are 12 dB/octave:
- Mode: three position switch; choose high pass, full range (crossover is bypassed), or low pass
- Frequency: set the crossover point; rotary dial; 35-250 Hz
Connections:
- Power Input: Two set-screw terminals are provided for connecting the power and ground cables. The terminals accept up to 8-gauge wire. (10-Gauge minimum is recommended.) The set screws are tightened/loosened with a Phillips head screw driver (not included).
- Remote: The remote turn-on terminal is a set-screw and will accept up to 10-gauge wire. (18-Gauge minimum is recommended.) The set screw is tightened/loosened with a Phillips head screw driver (not included).
- Speaker Outputs: The four pair of speaker output set-screw terminals will accept up to 12-gauge wire. The set screws are tightened/loosened with a Phillips head screw driver (not included).
- Line Level Input: Two pair of stereo RCA jacks feed the front and rear channels.
- Speaker Level Input: Two 8" 2-channel wiring harnesses are included for speaker level input.
- Fuse: There is one 30-amp ATM fuse, mounted inside the amplifier case.
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Customer Q&A
10 questions already asked
Q
The speaker level input harness with this amp has one white wire, one grey wire, and three black wires - none of which are marked. I'm installing this directly to the factory stereo on my 2021 Ram 1500 with 12" Uconnect and HK 19 speaker factory system (upgraded speakers). I can't find a wiring diagram to match these colors to the appropriate speaker locations anywhere. Can someone point me in the right direction?
nelson Jan 07, 2023
1 answer
A
Hey Nelson, and thank you for your purchase. We would prefer that you call our technical support service to help out with your install. You should have a tech number on your shipping confirmation email. If you accidently discarder the email, call in the main number, and we can switch you over to a tech. They are here 7 days a week. This way you can have all your questions answered in a more timely fashion.
hogan Jan 07, 2023 (Staff)
Q
Is there any warranty?
mason Sep 26, 2022
1 answer
A
Greetings Mason, and thank you for your question. Product warranties are listed on the product highlights bullet points for all our products. This Soundstream RSM4.1200D has a 3 year warranty.
hogan Sep 26, 2022 (Staff)
Q
How do I connect speakers to run 4 channel amp at 2ohm x 4 channels?
eric Aug 02, 2022
1 answer
A
If your speakers are 4 ohms then you would need to wire 2 of them in parallel to get a 2 ohm load of each channel.
arielle Aug 02, 2022 (Staff)
Q
The speaker level input harness with this amp has one white wire, one grey wire, and three black wires - none of which are marked. I'm installing this directly to the factory stereo on my 2018 F150 (non premium, no factory amplifier). I can't find a wiring diagram to match these colors to the appropriate speaker locations anywhere. Can someone point me in the right direction?
jeremy m. Jun 19, 2022
1 answer
A
We've got you covered Jeremy, no worries! This hi level input harness is a bit different than on most amps as you've got one for each "side" of the amp. White and grey appear to be the positive's for the L and R in each harness. I'm going to shoot you a picture of the OEM wiring breakdown as far as the speaker wires coming out of your factory radio, that's going to your email, that should help identify those connections! If you are still jammed up make sure to call our live Tech Support Hotline, you get that support for LIFE as a customer! That number is 888.292.2575. I hope this helps!
bo Jun 19, 2022 (Staff)
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So far so good! Purchased two of them for two different vehicles... Had one installed for a week & my mids & highs sound great! One been hooked up for 1 day on highs & sounds great so far
Kelvin from Powder Springs Ga