How to connect a Sub Woofer, If an amp doesnt have Sub Woofer out?
- Thread starter sunder
- Start date
john_k_antony
Well-Known Member
If your sub woofer accepts high level line inputs / speaker inputs, then you can do the following
Amp Speaker Out -> Subwoofer Speaker In / High level in
Subwoofer Speaker Out - > Main Speakers.
You can also adjust the crossover setting in Subwoofer to control the crossover point between main speakers and subwoofer.
Thanks,
John.
Amp Speaker Out -> Subwoofer Speaker In / High level in
Subwoofer Speaker Out - > Main Speakers.
You can also adjust the crossover setting in Subwoofer to control the crossover point between main speakers and subwoofer.
Thanks,
John.
adi_vastava
New Member
I think you will need a Sub which takes front L/R as input. And than connect the Front L/R speakers to the SUB output. I saw Yamaha 215 sub had this functionality. (Not recommending the Sub though)
theironhorse
Well-Known Member
what sub ?? active or passive ..
what amp ??
what amp ??
Hi sunder,
I presume by amp you mean integrated. Do you want to set up a 2.1 stereo? Most sub woofers accept RCA and speaker level inputs. What subs are you looking at?
It just depends on the model, so read the sub woofer's manual. Most subwoofers are designed to handle this situation. They have a high-level input (sometimes called speaker-level input) that hooks up to the speaker taps of your amp. All you do is run another pair of speaker cable from the output taps of your amplifier into the high-level input on your subwoofer. This connection works the same way as a preamp/subwoofer output: It takes the voltage from the amp as the signal and sends it into the subwoofer.
This does not cause a power draw on the amp you hook up to. It is merely sharing the signal with your main speakers, not the power of the amp. This means there is no power draw, and the overall impedance remain same.
In fact, even if your preamp or integrated has a preamp/subwoofer output, you may want to consider using the high-level connection method. The reason for this type of connection is as simple as it is logical: it ensures your subwoofer is seeing the EXACT SAME SIGNAL as your speakers. If you use the preamp/subwoofer output from your preamp or integrated, the signal seen by your subwoofer does not include the tonal balance and timing cues created by the amp. By using the high-level connection, the subwoofer gets the same signal as your main speakers, keeping them in better synch with each other, thus improving sound quality.
Hope that helps.
Regards
greenhorn
Well-Known Member
get a subwoofer with inputs and outputs for the speaker, if you want to have the sub handle all the bass (I would do this) .
If you want to run them in parallel, a Y cable would do
If you want to run them in parallel, a Y cable would do
hydrovac, thank you for your convincing detailed post. Yes I want to set up a 2.1 stereo. Yes, as you say, using a high level connection will be fine. Could you please tell me for that what are the sub woofers will suitable for high level connection? My integrated stereo amp has the output power of 70 watts RMS. Using Spendor S3/5R2 bookshelf speakers.
Thank you,
sunder.
Hi sunder,
The Spendor S3/5R2 specs seems to be quite impressive.
There are some sub woofer options but it depends on the sound you want. Do you like bass or could you live without it?
One is not enough!
While just one sub woofer is enough to enjoy movie sound in 5.1 or 7.1 two sub woofers (or full-range loudspeakers) have always been required for serious Hi-Fi reproduction of stereo music. The direction of a low-frequency sine-wave point-source may be less perceptible, critical to fine music reproduction are low-frequency inter channel phase differences present in true stereo recordings. When reproduced properly with stereo sub woofers (or two full-range speakers), these phase differences are critical to reproducing the sound space of the original concert hall.
Critical even to casual listeners is that if you sum the low frequencies of true stereo recordings into mono by using only one sub woofer, low-frequency inter channel phase differences partially or completely cancel each other, reducing or eliminating low-frequency output levels!
True stereo recordings are usually classical and other proper acoustic recordings made with pairs of microphones. Most "stereo" pop and jazz recordings are really just multi-miked mono, with each mono mic "panned" someplace between left and right. Pop recordings rarely have low-frequency inter channel phase differences, although they usually have bass information panned one way or another that also should be reproduced through stereo sub woofers if you demand the most accurate reproduction.
Putting the math aside, the best way to demonstrate this is to swap between one and two sub woofers with a real stereo recording, and it will be obvious.
So, choice is yours.
Cheers
The Spendor S3/5R2 specs seems to be quite impressive.
There are some sub woofer options but it depends on the sound you want. Do you like bass or could you live without it?
One is not enough!
While just one sub woofer is enough to enjoy movie sound in 5.1 or 7.1 two sub woofers (or full-range loudspeakers) have always been required for serious Hi-Fi reproduction of stereo music. The direction of a low-frequency sine-wave point-source may be less perceptible, critical to fine music reproduction are low-frequency inter channel phase differences present in true stereo recordings. When reproduced properly with stereo sub woofers (or two full-range speakers), these phase differences are critical to reproducing the sound space of the original concert hall.
Critical even to casual listeners is that if you sum the low frequencies of true stereo recordings into mono by using only one sub woofer, low-frequency inter channel phase differences partially or completely cancel each other, reducing or eliminating low-frequency output levels!
True stereo recordings are usually classical and other proper acoustic recordings made with pairs of microphones. Most "stereo" pop and jazz recordings are really just multi-miked mono, with each mono mic "panned" someplace between left and right. Pop recordings rarely have low-frequency inter channel phase differences, although they usually have bass information panned one way or another that also should be reproduced through stereo sub woofers if you demand the most accurate reproduction.
Putting the math aside, the best way to demonstrate this is to swap between one and two sub woofers with a real stereo recording, and it will be obvious.
So, choice is yours.
Cheers
havoc, yes it 'll be nice to connect subs to each channel to hear a complete stereo spectrum. But, will it suitable to a small room? will that dont generate excessive booming whenever both the channel reproduce the low? May we call it 2.2? Which sub woofers will match to my set up at an affordable price?
Thank you,
sunder.
Thank you,
sunder.
What is affordable price?
GCE
Member
B&w asw 608 or 610 (470 payed in Italy, 2013), with his high input connected to spk output B of Grundig; Spendor to spk out A; fine for all type of music and TV ...
Looking at this thread I became interested to try out the same with my Denon 510AE amplifier and Jamo Sub200. I can see that my sub has speaker line-in (L/R) as well as level-in (L/R) but no speaker out. I am currently using the level-in (L) to connect to my sub out from the Yamaha 571 receiver. If there is no speaker out from the sub how to use the sub with a stereo amplifier.
hydrovac, since I have to buy two subs, it's better to get a pair as not exceeding 40k. Can I put off the sub and use only speakers when the speakers are connected via sub? Because, When I use turntable, the sub may exaggerate the slight rumbling as big. So, that time I have to eliminate the sub.
Thank you.
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it will be bi-wire out from amp, one pair can go to speaker and another to sub.
but one point on this setup will be that this way we will have to depend entirely on the quality of the crossover built into the subwoofer, so to get better precison one may also go for a separate quality crossover.
GCE
Member
No impedance problem with sub, it is not 8 Ohm, but more high, say 30 kOhm; your caveat is only for two pair of speakers connected; the sub linked on B spk out does not stress any amp...even the weaker one...
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If the sub has speaker level outputs and a crossover setting will connecting the speakers to the sub instead of Amp help?
I am assuming that this way the low frequencies do not reach the main speakers thereby reducing the load on the speaker drivers.
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