• WANTED: Happy members who like to discuss audio and other topics related to our interest. Desire to learn and share knowledge of science required as is 20 years of participation in forums (not all true). Come here to have fun, be ready to be teased and not take online life too seriously. We now measure and review equipment for free! Click here for details.

SUB + Stereo System

Georgeadv

Active Member
Joined
Apr 3, 2021
Messages
150
Likes
22
Was looking into rel subs and they suggest connecting them through the amp speaker terminals.

Does this mean that certain bass frequencies will be both reproduced by the speakers and sub or will those lower frequencies be exclusively handled by the sub?

Does anything change with other connections?

Thank you!
 

Chrispy

Major Contributor
Forum Donor
Joined
Feb 7, 2020
Messages
2,427
Likes
1,865
Location
PNW
It's just called a high level/speaker level connection. You might have a low pass filter to adjust on the sub's amp to minimize duplication. Or you can utilize gear that has bass management....
 
OP
G

Georgeadv

Active Member
Joined
Apr 3, 2021
Messages
150
Likes
22
So essentially the sub and speakers will reproduce the same bass frequencies?

It has a low pass filter but they recommend only using it with Avr..
 

Chrispy

Major Contributor
Forum Donor
Joined
Feb 7, 2020
Messages
2,427
Likes
1,865
Location
PNW
In looking at a Rel manual they still were mentioning to adjust the low pass filter until it's obviously too high a point....even for the high level connection. Rel I just wouldn't bother with, so much better out there and I'd rather have bass management as well....YMMV.
 

ta240

Addicted to Fun and Learning
Joined
Nov 7, 2019
Messages
572
Likes
870
Yes, if you connect the subwoofer to the speaker outputs of your amp your speakers will still try to reproduce the low frequencies. Ideally, you would then adjust the subwoofer to crossover at the level where your speakers fade out on the bass.

If you amp has a subwoofer output with a built in crossover then you can have it split up the sound.
 

waynel

Addicted to Fun and Learning
Forum Donor
Joined
Nov 14, 2019
Messages
751
Likes
882
Was looking into rel subs and they suggest connecting them through the amp speaker terminals.

Does this mean that certain bass frequencies will be both reproduced by the speakers and sub or will those lower frequencies be exclusively handled by the sub?

Does anything change with other connections?

Thank you!
1) this is a very suboptimal way to connect a sub as the overlap in frequencies will make it harder to achieve a flat response , as the speakers and the sub will likely constructively and destructively interfere at some frequencies
2) A lot of 2-channel equipment doesn't support bass management and a HPF for the main channels- this is a problem
3) I'd recommend avoiding Rel subs
 

Everett T

Active Member
Forum Donor
Joined
Aug 2, 2020
Messages
114
Likes
58
Was looking into rel subs and they suggest connecting them through the amp speaker terminals.

Does this mean that certain bass frequencies will be both reproduced by the speakers and sub or will those lower frequencies be exclusively handled by the sub?

Does anything change with other connections?

Thank you!
What speakers are you looking at, how large is your room, how far will you sit from them, and where are you located?
 
OP
G

Georgeadv

Active Member
Joined
Apr 3, 2021
Messages
150
Likes
22
Thank you guys for your responses.

I have Hegel h190 with Ls50 Metas in 30sqm room howeve, is open on the right side. Speakers are placed on the left.

Why you would not recommend REL?
image.jpeg
 

Chrispy

Major Contributor
Forum Donor
Joined
Feb 7, 2020
Messages
2,427
Likes
1,865
Location
PNW
What's to recommend it particularly in the first place? I just consider them underperforming and overpriced myself.
 
OP
G

Georgeadv

Active Member
Joined
Apr 3, 2021
Messages
150
Likes
22
What's to recommend it particularly in the first place? I just consider them underperforming and overpriced myself.
they have good reputation though..

what would you recommend?
 

Chrispy

Major Contributor
Forum Donor
Joined
Feb 7, 2020
Messages
2,427
Likes
1,865
Location
PNW
Among who? Sub users? Not that I've seen particularly....

Where are you? In the US we have many good choices but I'm guessing you're from elsewhere.
 

sweetchaos

Major Contributor
Forum Donor
The Curator
Joined
Nov 29, 2019
Messages
1,877
Likes
4,446
Location
BC, Canada
what would you recommend?
Have you seen my 'subwoofer comparison' spreadsheet?

Seeing how we can compare subwoofers using the CEA2010 protocol, the decision becomes "Not what should I buy?", but "Where are you located?" (which will limit or enable you to choose more options), and "What's your room size in volume?" (which will tell you how much output you need to hit reference level of playback) and "What's your budget?" (the final question).

If you answer those 3, plus look at my spreadsheet, you can easily choose a subwoofer for your needs.
 

Newman

Addicted to Fun and Learning
Joined
Jan 6, 2017
Messages
773
Likes
856
Among who? Sub users? Not that I've seen particularly....

Probably among the hifi crowd, who believe that speaker/sub integration is a dark art, that mere mortal sub makers can never master, especially if they have ever made subs for the uncouth AV crowd.... you get the picture.
 
OP
G

Georgeadv

Active Member
Joined
Apr 3, 2021
Messages
150
Likes
22
Have you seen my 'subwoofer comparison' spreadsheet?

Seeing how we can compare subwoofers using the CEA2010 protocol, the decision becomes "Not what should I buy?", but "Where are you located?" (which will limit or enable you to choose more options), and "What's your room size in volume?" (which will tell you how much output you need to hit reference level of playback) and "What's your budget?" (the final question).

If you answer those 3, plus look at my spreadsheet, you can easily choose a subwoofer for your needs.

that's a lot of work put into!! very nice

I live in Europe so I dont have access to the majority from what I can see...
 
OP
G

Georgeadv

Active Member
Joined
Apr 3, 2021
Messages
150
Likes
22
How can I do bass management and pass lower frequencies only to the sub?

Using some a minidsp that has a dac?
 

Everett T

Active Member
Forum Donor
Joined
Aug 2, 2020
Messages
114
Likes
58
How can I do bass management and pass lower frequencies only to the sub?

Using some a minidsp that has a dac?
With either a device like minidsp or an AVR, as most integrated amps that have bass management aren't very sophisticated. Since you're using speakers that aren't ideal to run full range, the only other option is a sub with bass management. I'd definitely skip REL and put that money towards better performance or equipment.
 
Top Bottom