SKU: SMP-500DSP
OSD SMP500800W Mono Class D Subwoofer Amplifier, Auto Sensing, 4 -8 Ohm ETL, CE Certified DSP App Control
OSD Audio's SMP500DSP Class D subwoofer amplifier is designed for use with higher wattage passive subwoofers such as in-wall subs that require external power. It is rack mountable and 1U chassis. This sturdy sub amplifier is not for the faint of heart. It serves up 800 watts of power peak and 400W RMS @ 4 ohms, so to say that it is powerful is an understatement. This sub amp does more than just supply power. You'll notice an improvement in the overall sound quality of your entire home theater surround sound system.
Features:
- Mono Class D Dedicated Subwoofer Amp
- 800W Peak /400W RMS @ 4 ohm
- Variable High Cut Filter 30Hz-150Hz, front panel knob .
- Additional Front Panel Control: Phase Switch and Volume Control
- Choice of Signal Level Input or LEF (Low-Frequency Effects)
- Turn On Choice: Music Sensing, Manual On or 12V Trigger
- Adjustable Gain/Volume Control Limiter
- Signal (low level) and Speaker Level (high level) inputs
- 110/220V switchable ETL, CE
You'll experience deep, rich and crisp bass while watching your favorite movies, especially action and adventure flicks. A big bang for the buck, features include a front-mounted power meter, back panel adjustable gain and volume control limiter to protect the woofers as well as low-level and high-level pass-through input/outputs to cover newer and old school sound systems. Combining the best qualities of both class A and B amp technologies, distortion is low while efficiency is high, and the SMP500DSP Mono Amp also includes a variable high cut filter that routes higher frequencies to main speakers. This allows subs to concentrate on the low-frequency sound effects for which they are designed and keeps low bass away from your surround speakers for much cleaner highs and midrange.
Warning: California's Proposition 65
Warning:
This product can expose you to chemicals, including vinyl chloride, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
- Power Output: 400W (RMS @ 4ohms) 1000W (Peak @ 4ohms)
- Transformer Type: Switch-Mode
- Input Terminals: Speaker (High) Level, Signal (Low) Level RCA
- Outputs: Subwoofer, Speaker Pass-through
- Input Sensitivity: 190mV
- Crossover: 20-150Hz
- Phase: 0-315°
- Air-cooled or Fan-cooled: Air
- Control: Phase, Crossover, Subsonic, Slope and Level
- Remote Control: Yes
- 12 Volt Triggers (Trigger Mode): Yes
- Auto-On Sensing: Yes
- Rack Mountable: Yes - mounts included
- Dimensions (L x D x H): 17.13" x 9.45" x 1.75"
- Weight: 7.6 lbs
- Rating: ETL, CE
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22 Questions asked
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Brian Johnson • 12/01/2020, 10:20:54 AM
Good Morning, and thanks in advance for your help. I have a large outdoor patio and pool area. Currently, there are 4 speakers (2 pairs) under the covered lanai, and 2 DefTech aw6500 facing out over the pool deck (mounted under the eaves). The sound seems ok ... but lacks presence and depth (I know ... it's outdoors). I want to add outdoor subs to the area and I feel I need at least 2. So here is my question. If I look at the Forza 10" I could do 2 Subs and 2 SMP300 amps. But, then I see the Forza 10cross which is an 8 ohm speaker. I could wire those in parallel and drive the resulting 4 ohm load with a single SMP500 or even a SMP1000. Which of these 2 options will give me better bass extension? I'm curious as to why the 10 and the 10cross have different impedance? Just for reference, I would also add 4 AP850 or AP650 (2 pair) along the outer wall of the screen room which is furthest from the existing speakers (30 ft). I already have good amplification availability for these full range speakers from an unused Rotel RMB 1565 amp in main main system. I believe this would give me good sound 'presence' without having to rely on high volume to cover the area. Any comments are appreciated, but mostly the question is about the Subs. Thanks, Brian
Customer Service • 12/04/2020, 1:58:42 AM
Hi Brian:
You have been doing your research. The FORZA10 Cross has a pass through for a pair of 8-ohm satellites so the sub has to be 8-ohm in order to connect both the sub and satellites in parallel to a full range amplifier. The FORZA by it self is limited at 4-ohm, so like you pointed out it needs its own dedicated sub amp. I think the only sub in the building that would do the job for you is our XSub 12 inground 12" sub. You can drive two with a single SMP500DSP but would get more bang for your buck with the XMP1000DSP. The FORZA10 would not give you enough low frequency to support two pair of Def Tech rated to 40Hz. Or for the AP850 which go down to 35Hz. I hope that helps.
TimL/2/3/20
Tommy Kjaer • 12/16/2020, 3:38:43 PM
Hello OSD
Why does my SMP500 make a loud noise/crack in my subwoofer when it goes into stand by mode. It is trigged in position "music".
Yours Tommy
Customer Service • 12/18/2020, 12:21:18 PM
Hi Tommy:
What happens when you have it in the on position, Or have you tried the 12Volt Trigger? Sometimes when you have high internal capacitance (energy stored) they will discharge. Is it the same when you have been listening for quite awhile? Is this for music or home theater? tim@osdaudio.com
TL-12-18-2020
Conrad R. • 07/02/2021, 0:52:46 AM
Hi,
We just moved to a home that has a home theater with two Triad 10” in-wall subs (https://www.control4.com/docs/product/triad-bronze-subs/triad-data-sheet/english/latest/triad-bronze-subs-triad-data-sheet-rev-d.pdf), however the current amp setup doesn’t seem to provide enough power to the subs (Onkyo amp with ~125 watts per channel, 250w total). Would this SMP500 be able to handle the dual Triads? Only thing I am not sure of is if the subs are 4 or 8 ohm.
Customer Service • 07/07/2021, 3:13:01 PM
Hi Conrad:
Apparently, when the person ordered the Triad sub, they would have specified 4 or 8 ohms depending on their application. If the two subs are already wired together with a single wire back to your ONKYO, they are most likely 8-ohm that would have been wired in Parallel. So a single SMP500DSP or SMP1000DSP could drive both Subs. I would check with Triad to see how they are marked 4 or 8 ohms so you can verify. They are each rated at 300 Watts apiece, so the 125 watts may have been lacking. If they are in fact 4-ohms than you will need two sub amps, maybe 2 SMP500DSP or if 8-ohms, maybe the SMP1000 DSP would be more than enough plus.
TimL/7-7-2021
Jorge Garcia • 07/09/2021, 3:29:11 PM
Can this amp run 2- Xternal12 woofer at the same time?
Customer Service • 07/13/2021, 4:31:28 AM
Hi Jorge:
The XTernal 12/XSub12 inground Passive Subwoofer is rated at 8-ohms. All our SMPseries Subwoofer amplifiers from the SMP200, SMP300, SMP500DSP, and the new SMP1000 DSP are rated to do 4-ohm or 8-ohm what your connection is. When you power two of the XTernal12/XSub12, the load drops to 4-ohms, The SMP300 will work but has to work harder than the SMP500 DSP, the ideal choice for the two subs. 4-0hms is doubling the Sub Amps output of all these Sub Amplifiers. In each case, you are optimizing the most out of these amplifiers when running them at 4-ohms.
TIML/OSD Tech Support 7-13-2021
jeff sendelbach • 10/17/2022, 10:32:18 PM
i cant get this osd smp500 dsp to come on. please help, its brand new. but doesnt have any output.i have tested the in ground sub that its connected to with a battery, and confirmed that it makes noise. i ran the 100 foot of hd rca cable to the osd smp500 and confirmed i have signal, but still nada out of the device. do i have to run a turn on amp cable to?
Customer Service • 10/19/2022, 5:19:43 PM
Hi Jeff:
You need to turn the amp on with the power switch. If the display lights up, then it is not a bad fuse. The switch on the back labeled Trigger has three options. Music is for automatic signal sensing. The On setting is the Power switch pushed in on the front panel. The 12V position corresponds to a physical connection from your Source. For all three settings, you will need the Power Button enabled. I am sending some info to your email address regarding setup in a separate email.
TimL/10/19, tim@osdaudio.com