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subwoofer to speaker connection

I am a novice and would like to seek advice from fellow Audiogonians. In  reading the forum 128025-84361 (Jan this year) on speaker and sub connection, I am intrigued  by the comment   from rcprince “Virtually every review I have read remarks on how the mids and upper bass from the main speakers are improved when you add a subwoofer…”. I have a pair of Focus Audio Signature Series (Model 78) speaker and one Audio Physic Luna sub. Would connecting these 2 produce improvement in the sound of music? If so , how  can I  best connect my sub and speaker ? I don’t mind buying the high pass filter and inline cross over as mentioned in the above forum, if needed. Moses


moses189

Showing 5 responses by gdnrbob

gdnrbob
4,496 posts
 
I prefer high pass filters as they allow your amp and main speakers work more efficiently while allowing the sub to do what it does best.
I, too, am considering the HSU highpass filter for my HSU subs.
I can't find much info on your amp, but it looks to be a nice one. 
I assume your preamp doesn't have low frequency output, so you are going to need a crossover.
For $100 the HSU is a reasonably priced unit. For my main system I use the Vandersteen M5-HP filters which do the same thing but at a higher fidelity point. 
I will politely disagree with yogiboy regarding the benefit of subs. Every system I have added them was improved. 
Audio Physic has a nice tutorial on placement on its' website, too.

gdnrbob
4,496 posts
 
Looking at the Luna manual:
https://www.manualslib.com/manual/1141221/Audio-Physic-Luna.html?page=10#manual
I see you can connect the sub with speaker cables (in parallel with your speakers), and use the subs controls to adjust crossover frequencies.
Though using it this way will mean your main speakers are running full frequency. I am doing this currently in my office, but I prefer using the high pass filter as it lightens some of the work for the amp, but it means the sub and main speakers aren't overlapping frequencies, and thus muddying the sound.
B
gdnrbob
4,496 posts
 
If you can use them as monoblocks, then yes, it would be an upgrade.
Possibly less so if you want to drive upper and lower frequencies separately.
One of the best things about monoblocks is that you can put the amps close to the speakers. Thus, using short speaker cables.
B

gdnrbob
4,496 posts
 
Why not try out what you have and see if it makes a difference before you make your next move?
gdnrbob
4,496 posts
 
I just ordered a Hsu high pass filter. I'll let you know what I find. It may be what you are looking for.
Without knowing what sound quality you like makes it almost impossible to give you suggestions.
If you are near local dealers, I would suggest listening to as many speakers as you can, so you can get a handle as to what you are looking for sound-wise. Then we can work out what electronics you need.
I wish I heard Audio Focus, but I never have.
B
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