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Morel MPS-HL 2-channel line level adapter (speaker wire to RCA)

Item # 210MPSHL

Morel's MPS-HL 2-channel high-low level adapter allows you to convert amplified, speaker-level signals down...

Morel's MPS-HL 2-channel high-low level adapter allows you to convert amplified, speaker-level signals down...

18 questions - 15 answers

Item # 210MPSHL

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$35.00

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About the Morel MPS-HL

Buck Pomerantz

Transform speaker-level inputs to RCA level

Morel's MPS-HL 2-channel high-low level adapter allows you to convert amplified, speaker-level signals down to line-level RCA outputs. You'll be able to connect your car stereo's speaker outputs directly into aftermarket amps with preamp-level inputs only, like Morel amplifiers.

Transform speaker-level inputs to RCA level

Morel's MPS-HL 2-channel high-low level adapter allows you to convert amplified, speaker-level signals down to line-level RCA outputs. You'll be able to connect your car stereo's speaker outputs directly into aftermarket amps with preamp-level inputs only, like Morel amplifiers.

Rugged connection

The MPS-HL features simple screw-down Phoenix or Euroblock connectors where the speaker wires get securely fastened. Terminals are marked to keep polarity straight. Dimensions: 1-5/16"W x 1-5/8"H x 1-3/8"D (6" with connectors). Warranty: 1 year

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What's in the box:

  • MPS-HL Speaker-to-RCA adapter
MFR #803030-100

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More details on the Morel MPS-HL

Mark G.

Product Research

Features

Overview: The Morel MPS-HL is a speaker-to-RCA adapter for Morel MPS amplifiers. It allows you to connect the head unit's speaker level outputs to the amplifier's RCA preamp-level inputs. The MPS-HL works with amplifiers that only have RCA inputs, including the MPS 1.500, MPS 4.400, and MPS 5.950 amplifiers. A built-in 50-ohm load resistor steps down the speaker-level audio signal to preamp level to avoid overloading the amplifier's input stage. One MPS-HL is needed for each pair of speaker wires you connect from the head unit. Dimensions: Width 1.264", Height 1.576", Depth 1.357", Overall length 6".

Connections: The MPS-HL has a two-channel Euroblock (Phoenix) connector at one end (4 screw terminals). The screw terminals will accept up to 14-gauge speaker wire from the head unit. The adapter is marked for left and right + and - wires to get the correct polarity. The other end has stereo (white/left and red/right) RCA plugs for the amplifier connections.

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Customer Q&A

18 questions already asked

Q
I have a JBL Aura system. Will this work with a RCA to Bluetooth transmitter?
elmer  Nov 20, 2023
1 answer
A
Greetings Elmer. Thank you for your question. Technically it would work, however my thoughts are the signal strength would be very weak going into the Bluetooth transmitter. I would check the JBL Aura and see if it may have RCA preamp outputs as that should work a little better.
hogan  Nov 20, 2023 (Staff)
Q
I have a Yamaha (R-s202) 2 channel Receiver without a subwoofer out. Will this work if I plug the speaker wire into it and connect the rca ends into a low level input on a power subwoofer?
elijah  Aug 19, 2022
1 answer
A
Using this Morel MPS-HL 2-channel line level converter connected to the "B" outputs for instance on your Yamaha R-S202 would work for your application, Elijah. You will of course have to adjust the crossover on your sub as it will be a full range line level signal. This Morel unit is technically designed for car audio but there is no reason why it would not work here to send line level to an additional sub. This is a good way to get the signal in as your volume control will still be linear, unlike if you connected to a tape or record out. IF you prefer something that you can mount that is designed more for home audio you can also use this fantastic Russound ADP-1.2 Speaker-level converter. These type of units have gotten me out of a pinch more than a few times! https://www.crutchfield.com/p_543ADP12/Russound-ADP-1-2-Speaker-level-to-Line-level-Adapter.html
bo  Aug 19, 2022 (Staff)
Q
Any feedback noise? I remember back in the day that was an issue with them but if grounded the or were Groundable RCA's problem solved for the most part. I remember then not being very stable had to I keep adjusting them. Don't all amps have this already as part of the amp? I remember some had high level inputs. Don't they still have that if not much better then adding additional connections inline?
stillnoone  Mar 23, 2022
1 answer
A
This would be best used with amps that do not have speaker level inputs. It also allows for the audio to be sent all the way to the amp and only be preamp level for the length of the cable to help keep noise out. That speaker level signal should not pick up noise while being sent to this part. The use of this part is not expected to create noise but also does not do anything to remove noise coming in on the speaker wire. We have advisors that can be reached by calling 1-800-324-9695 who can help give a personal recommendation on the gear you need to complete the installation
jason  Mar 29, 2022 (Staff)
Q
Will this work with my computer? I have speakers with wires but no jacks. If I adapt them with jacks can they be used as speakers for my computer?
billie  Feb 20, 2021
1 answer
A
I do not believe this will work for your setup. Speakers with bare wires typically need a receiver or an amp to power them. We have advisors that can be reached by calling 1-800-324-9695 who can discuss your specific speakers, the computer, and your performance goals to give a personal recommendation on a setup
jason  Mar 14, 2021 (Staff)
Q
This item is wired straight through from input to output with 50 ohm resistors across the outputs. How can that provide a "line in" level? Looks like "speaker level" to me. Perhaps need to add a 10K (or something) in series with input terminals.
robert  Dec 11, 2020
1 answer
A
That will not be necessary as a 50 ohm resistor will cut down on the power that can flow on through to the output stage in a manor that is very similar to amps and how their power output is reduced with higher ohms or resistances
jason  Dec 22, 2020 (Staff)
Q
I have two l r Cambridge outdoor speakers. Can I use this to adapt to rca cable outputs from a boom box?
jason  Dec 02, 2020
1 answer
A
This is designed to take a speaker level output and convert it to RCA to send audio to an amp. It does not allow RCA outputs to send audio to passive speakers
jason  Dec 16, 2020 (Staff)
Q
whats the maximum voltage in vi hi level this can handle?
charles  Oct 21, 2019
1 answer
A
I don't have the maximum limits on this nor can I find any mention of it on Morel's site. But I was able to see that in the manual for their amps, they can take up to 10V signals which means this can definitely handle up to that level of power.
jason  Oct 28, 2019 (Staff)
Q
I have 2 Polk audio speakers outside I would like to connect sound to tv without an amplifier. Is that possible? If so what do I need?
chris  Sep 27, 2019
1 answer
A
Hi Chris, thank you for your question. Unfortunately, we will not have a solution that will allow you to connect your Polk Audio speakers, and obtain sound from your TV without the use of a receiver or amplifier. Please chat online with an Advisor, or give us a call at 1-800-324-9695. We will be happy to go over your options with you, and find you the best solution.
jessica  Oct 10, 2019 (Staff)
Q
I have an old receiver whose output is through speaker wire that I'd like to connect to a soundbar with RCA connections. Will this work?
rich  Jul 30, 2019
1 answer
A
No I don't think that would work for that application. Without knowing the exact power output of your receiver, I can pretty confidently say that LOC is not rated to handle that much input wattage. Second, there is no adjustments on the Morel LOC which would make it extremely difficult to match with the soundbar's input sensitivity. We might have some work-around solutions. You can connect with one of our product advisors to look at alternative options: https://www.crutchfield.com/I-rET1c290/S-SUliZgSTXG7/support/ContactUs.aspx
casey  Aug 06, 2019 (Staff)
Q
A; I have wired Bose speakers. B; I have a smart TV. Question; can I use the adapter to plug the speakers into the TV?
dawn  Jul 17, 2019
1 answer
A
Hi Dawn, thanks for your question. Unfortunately, this item wouldn't be able to give you the results you're looking for. We do have other options for you, though! Chat with an Advisor online, or by phone at 1-800-324-9695. They will be able to go over your existing speakers, and find the products that will work best for you!
jessica  Jul 29, 2019 (Staff)
Q
Does this in any way degrade the signal quality coming from the amp, through the line level adapter? Will the attenuation of the signal (or overall volume rather) and the intensity of it affect the line level adapter?
sulliven  Jul 15, 2019
1 answer
A
The line level adapter will have a small effect on the sound quality, but this is unavoidable with any line output converter. If you are going for as clean a sound as possible with a line out put converter, I would give one of our advisors a call, and we can go over the numerous options and their pros and cons. https://www.crutchfield.com/support/ContactUs.aspx
thomas  Jul 31, 2019 (Staff)
Q
I have an aftermarket car stereo with a built in amp. It has the rca female outputs. I want to connect a small sub to but I need a speaker wire to Male rca adapter what should I use??
edgar  Jun 19, 2019
1 answer
A
Hi Edgar, thanks for your question. Since your aftermarket stereo has pre-amp RCA outputs, you will only need to use a set of RCA cables from the receiver's outputs, to your amplifier. Chat with an Advisor online, or call at 1-800-324-9695. They will be able to get you all the gear you'll need for your installation!
jessica  Jul 01, 2019 (Staff)
Q
so this works like the lc2i in a way that all you do is hookup the speakers and it connects to a aftermarket amp?
james  Jun 03, 2018
1 answer
A
The Morel MPS-HL is a speaker-to-RCA adapter for Morel MPS amplifiers. For more details or to discuss further please contact an Advisor directly by phone (888.955.6000) or online chat. Thanks!
david  Jun 11, 2018 (Staff)
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