Hi all. I am new here. And recently I just ordered a pair of M700. The M700 will be driving my ATC SCM11 speakers and I have an old REL Strata II which I intend to continue to use it. My question is can I use the same high level input for the REL with a Class D amp like the M700? I read somewhe…

Maybe start here. I used one and no issues. [image] Class D Amp Connection Methods REL High Level Connection When Used with Class D Amplifiers The spreading proliferation of Class D amps creates a challenge when connecting a REL subwoofer using our High Level Connection. The pr... …

Since you already own the REL there is no harm in following the directions and setting it up the way the directions state. I can tell you that I followed their directions for a differentially balanced integrated amp and had a hum issue whenever the integrated was switched to standby because doing …

I had a similar issue with my BHK 250 amp and REL S/5 SHO when the amp was put in standby that was solved by a resistor network from REL (cost $100) that connects to a chassis binding post provided by PSA (free). I don’t know if they have a similar thing for the M700’s but if a hum develops it’s wo…

Interesting. They never offered this to me. I returned the sub.

If I remember right, I connected to + on one amp and - on the other and left the black wire disconnected. No hum, all worked fine. I believe I remember a REL tech told me if I did get hum, run an RCA from my pre to the REL and that would satisfy the ground issue. never needed to try that. And, Th…

My sense was that PSA worked with REL. The network (which just looked like wire Y adapters that connected the binding post on the chassis to the left and right speaker binding posts–I did not try to measure the resistors that must have been built-in) was specifically for the BHK 250 (at least the in…

So are you (we) saying a REL will not hook up easy (to a 250) just like with any A/B amp I have used? I’ll need a resistor network? I have not found my REL yet so this is interesting to know.

I was expecting the hum issue because others on the forum had reported it. You may not get hum at all depending on your configuration. If you do get hum from your REL with a BHK 250, the network is an easy fix. The hum only occurs using high-level (speaker post) connections and only when the amp …

I don’t think it’s hum when the amp is operational. It’s when the amp is in standby that the hum presents itself. It least that was my case. When I put my amp in standby (off) it lifted ground which ended up causing a hum. Yes I ran the the RCA line and everything REL recommended. I got a sligh…

Got it thanks. I am definitely going hi-level the way I have hooked up previously. Sounds like easy to determine and easy to rectify if needed.

M700 + REL Subwoofer high level input question

Audio Components Amplifiers

ttl100 September 14, 2018, 1:57pm 18

Here’s an update. I have finally hooked up my REL with the M700 by not connecting the ground wire. Works ok no hum.

Another day, another subwoofer question

Topic		Replies	Views
What have I done wrong? Loudspeakers	12	725	January 30, 2021
M700's and Rel subwoofers Amplifiers	28	2099	May 6, 2022
Connecting single sub to monoblocks Amplifiers	4	1312	March 8, 2021
New Stellar m700/GCD -- hookup to a single REL? Amplifiers	36	4647	June 1, 2020
Which Subwoofer? System: Krell EVO222pre, BHK250, Vienna Acoustics The Kiss Loudspeakers	17	1366	June 27, 2019

M700 + REL Subwoofer high level input question

Related topics