Subwoofer cable question


I want to run a Rel sub from my integrated amps "pre out" and the sub has only 1 "low level" and  the "lfe" input. Do I need an adapter from stereo to mono or do the low level and lfe inputs on the sub act together as left and right input?

emiliop

Showing 7 responses by oldhvymec

Here is the facts if you really want to know. There is a left and right channel for a reason. The RECORDING has a left and right BASS TRACK. If you use only a left or only a right from your source as the signal to your subs, HALF of the BASS track is NOT THERE to listen to.

Below 80hz the waves are so long separation is impossible, BUT you still have to play BOTH left and right to get the entire recorded piece. Unless it’s recorded in MONO and mirrors the bass track to both left AND the right, you had better use both left and right source signals IF you want to hear the WHOLE recording.

LFE is a combo of left and right bass tracks with a step baffel bump of +3-10db at 40hz and below.. AT THE SOURCE, not the plate amp.. LFE to LFE works great in HT more so.. Bombs exploding and really loud FARTS..

I say KNOW your equipment first, before using only HALF the signal that’s supplied to your subs as a signal.. It’s not only important to use left and right it’s important to know WHY!!!

With great respect and Regards, your welcome..

There is a difference in the type of amp that drives the mains too. You wire thing different so you don't hurt the REL amp too.. I think it's class Ds or no third prong on the PC.. I was just reading it a couple weeks back..

 

Regards

It’s NOT stereo subs if both left and right signals are used in reproduction.. There is a BIG difference.. Wording count’s.. Stereo is greater than the sum of its parts, there are THREE distinct channels, left right and phantom center from TWO channels.. This isn't hard to understand..

IF you ran all your subs off just the right channel do you think all of the bass track on the source recording will be reproduced?

The only question that needs to be answered. A buddy a musician that is has a nice little recording studio in his home in Shelton WA. Can show anyone that wants the two different, but complete tracks, it takes to make up a single bass track..

Simply put, Bass guitar on the left and drums on the right, what do you think it would sound like if you only used the right channel?

BTW he is a serious bass player and stringed guy period. From a harp to a piano. He can explain the recording process pretty clearly.

I KNOW people are mixing mains that have a full signal with systems like mine that don’t pass a bass signals through their monitors, I use separate enclosures..

Same with my servo plates, hook up a single RCA to either plate and you will leave out 1/2 the signal. Very EASY to hear on my rigs..

Directionality or the fact subs can’t produce a center bass phantom tells you something. There is no separation from left to right, it is not reproduced in stereo it is reproducing TWO separate tracks to complete the actual way it was produced.

HOW SUBS are hooked up is REAL important in MY system, I have no idea what anyone else does.. if 1/2 the signal makes you happy.. By all means hook up your subs any way you like.. LOL

Yup fastfreight it’s pretty important too. REL say is will hurt their amp, NOT YOURS, I would question that one..:-) I don’t want to hurt anything.. It’s MINE after I pay for it.. LOL

Regards

OK a kettle drum, and a double bass, how is that...:-)

I understand SUB means below the threashold of normal hearing and goes to the FEELING senses. But 40 hz and up I can hear and feel and up to 250hz. It is still bass.

From 80 to 300 is VERY directional.. The exact reason I split hairs and cabinets. Subs are subs. Midbass is midbass and everything else above that is in it’s own enclosure too and for a good reason, vibration and timing.

You cannot put BASS and mids and highs in the same cabinet without digital correction.. I quit that silly idea 25 years ago, because distortion and cabinet resonance issues. BASS cabinets are different than mid cabints that are different than a Highs cabinet.. They even use different dampening materials (stuffing) and cabinet material are treated with different products.

Rubber line is best for resonance while LOW RES is best for dapening..

It’s funny when you make speaker you understand speakers, I thought the mechanics of it were pretty easy to understand.. I guess not for everybody..:-)

My set up looks a little weird, but bring one bring ALL your Mics and measure, it will blow your mind the super low distortion and clarity of sound.. Under 5% distortion 25 years ago when I went from bottom firing subs, and inner tube decoupling all the bass enclosures.

I got a new one coming up first one in 10 years. First standmount I’ve done.. Planars and Ribbons. Maybe by spring... How long did it take Noah to build the boat fellas? Just askin’

Regards

YUP if you produce it you know it.. It’s how the information is recorded. This just ain’t rocket science. There is left and right information on the mediun down to 2hz for all I care. The FACT is, it is recorded different and mixed different than a single mono left or right RCA or XLR is providing in a playback system.

With Daytons DSP or their 1000 watt plate amps they are summed, but just hook up the left or the right not both RCA/XLRs 1/2 the signal goes away, On my daytons anyways..

As far as listening, listen to Stanly Clark.. or my buddy Kenny Bassett.

sub/bass Mono playback my A$$.

Like I tell people DBA and Swarm is a low cost solution to good bass. BUT it’s STILL not THE best. A 7.5 is about the best I’ve heard.. Servo bass column arrays are 10s, they are that much better.. I’ve have a 3rd too, OB servo arrays, Better than MY DBAs anyways..

I used 4 tall boys 12,15, with a 15" passive.. They were powerful passive subs with 4 1000 watt daytons bass amps in the 1980s and 90s. NOT 2020.

You adjust the weight on the passive with putty for the room.. Mechanical Q (uality) old school.. Learn how to add bass and subs to your room without DSP other than a PEQ LOL I had a guy teach me.. Brian Cheney of VMPS, I never met a guy like him.. HE sure knew BASS.. THE 90s fellas they didn’t even call it DBA or Swarm back then.

BTW it still wasn’t as accurate as Infinitys’ STEREO servo bass columns on an AIR BAG decoupling system.. 90s fellas.. I'm not Granpa Bass BUT darn close..:-)

Again Mono my A$$.. The results is mono, the source signal is stereo.. plain and simple.

Even my midbass columns 100-300hz IMAGE a center phantom speaker.

Think about that one..

Regards

SVS is a great sub.. A lot better design.. Go for it.. front ports or IB (no port).

Better choice for sure..

Regards..

OP what kind of integrated are you running? There might be another way. I'm no expert but what are you working with?

I run a ZPre 3 in a tape loop on a C20 or MX110z. It adds a Remote for me, a fixed frequency Sub out for a passive sub and line level RCA for sub or main speakers..
I use it for subs only. The C20 or MX110z runs the main speakers via a MC225,240,275.

I paid 300.00 for it I think.. The use of a second preamp use to be pretty common.

Remember though there is a LOT of gain. You better have pretty good routing skills too. LOL Noise can be an issue because of the gain. Mine is still VERY quiet behind routing primarily.

Over the last couple of years, WEAVES and ribbons and very little use of shielding has netted me some fairly low dollar (cost wise) but high quality results in cables.. Really HIGH quality.. To the point of spending more money on cables to increase the sound quality, seems a little crazy to me..

I like the Helix from Mr. Wonka too. 
You won't find a product that produces higher SQ. You may find something you like the sound of better, but it's not because the product is better. I found usually it just takes a little time to sink in. Just because it cost more doesn't make it better.. LOL

Regards