sub pairing with stereo amp

[kamal1675]

hi guys,

Trying to gain some knowledge abt Subwoofer from you all. I have marantz PM6005 & Boston Acoustics A26 bookshelves. Wanted to know if a sub can be added to the system. I had read that in AVRs there are seperate Sub Outs so all low freq are diverted to sub and mid and high freq are send to spkrs reducing their workload and thereby increasing the overall sound effect. On the other hand there is no specific Sub out in stereo amps so will it really have any significant effect in sound. So in short my queries are:

1. Can a sub be added to my setup. If yes, how to connect it.
2. Will it have any significant effect in sound quality. If yes, pl suggest a good sub within 20-25k that will go with Marantz pm6005 .
3. what is difference between active and passive sub and which one will go with my setup.

i am a beginner in these aspects, u can make out from the nature of query itself. So pl pitch your replies at my level. Thanks

 

[apbinu]

Hi Kamal,

Few Threads for you which would answer your queries as these are discussed. Hope it helps.

http://www.hifivision.com/speakers/65096-subwoofer-loan.html

http://www.hifivision.com/what-shou...-n602-vs-onkyo-9050-preowned-nad-c326bee.html

http://www.hifivision.com/amplifiers/51465-who-no-subwoofer-connectivity-marantz-pm-6004-a-2.html

Cheers,
Binu AP
-----------------------------------------------------------------------------------------------------
LG 42" Plasma | Marantz PM6005 | AJ FS52 | Velodyne Impact 10 | Panasonic dmp bdt220

 

[crosstalk]

I am about to add a sub to my setup. I have a Onkyo A9030 integrated amplifier which drives a pair of PSB Alpha B1s. The Onkyo has a sub-out at line-level. It also has a phase matching bass on/off switch.

So ideally check if your amp has a sub-out? That would be the first preference.

Some subs do take inputs from speaker lines, but I have not come across any such setups. May be someone more knowledgeable can comment on that.

I would always prefer a sub with a phase switch so that the subwoofer can be 'in phase' with the 2 speakers.

 

[MaSh]

hi guys,

Trying to gain some knowledge abt Subwoofer from you all. I have marantz PM6005 & Boston Acoustics A26 bookshelves. Wanted to know if a sub can be added to the system.

So in short my queries are:

1. Can a sub be added to my setup. If yes, how to connect it.
2. Will it have any significant effect in sound quality. If yes, pl suggest a good sub within 20-25k that will go with Marantz pm6005 .
3. what is difference between active and passive sub and which one will go with my setup.

i am a beginner in these aspects, u can make out from the nature of query itself. So pl pitch your replies at my level. Thanks

From the specs I see that this AMP has A and B speaker out ports. That makes it very easy to connect the SUB. You need to look for a SUB with Speaker Level Inputs. Connect your bookshelf speakers to Terminals marked A and connect your SUB to Terminals Marked B. Switch the AMP to A+B mode and enjoy.

1. Can a sub be added to my setup. If yes, how to connect it.

Yes. Explained Above.

2. Will it have any significant effect in sound quality. If yes, pl suggest a good sub within 20-25k that will go with Marantz pm6005.

Absolutely. It will fill up the low frequencies much better than the speakers. Some consider speakers to be enough, however, with speakers which do not have great low end or someone like me who likes a bit more thump, a Sub fits in very well. Which Sub, you will have to search a bit, however, if you are in Bangalore,you can come take a look at my Wharfedale Sub and how I have connected it to my Pioneer stereo amp.

3. what is difference between active and passive sub and which one will go with my setup.

Active Subs have their own amplifiers requiring only a pre out signal from the source. Passive subs rely on the Amplifier in your stereo amp or receiver. Look for an Active Sub, not passive.

MaSh

 

[sree0320]

I have connected the Speaker B on Marantz pm6005 to speaker level inputs on wharfedale sw150.

So choose a sub which have speaker level inputs and almost all entry level subs does have these inputs. You can consider many subs which have been suggested earlier.
You can check
velodyne impact subs
Wharfedale , sonodyne and taga which are available on HIFIMART.

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[kamal1675]

Thanks all for your valuable inputs... Great to learn from all of you. Thanks

 

[kamal1675]

From the specs I see that this AMP has A and B speaker out ports. That makes it very easy to connect the SUB. You need to look for a SUB with Speaker Level Inputs. Connect your bookshelf speakers to Terminals marked A and connect your SUB to Terminals Marked B. Switch the AMP to A+B mode and enjoy.

Yes. Explained Above.

Absolutely. It will fill up the low frequencies much better than the speakers. Some consider speakers to be enough, however, with speakers which do not have great low end or someone like me who likes a bit more thump, a Sub fits in very well. Which Sub, you will have to search a bit, however, if you are in Bangalore,you can come take a look at my Wharfedale Sub and how I have connected it to my Pioneer stereo amp.

Active Subs have their own amplifiers requiring only a pre out signal from the source. Passive subs rely on the Amplifier in your stereo amp or receiver. Look for an Active Sub, not passive.

MaSh

First of all thanks for the detl reply. I understood everything except the connotation of active and passive sub. U said that active has own amp and passive relies on stereo amp, but as such I will be connecting it to stereo amp so, will it not work that way. I mean why should I use active sub when I have amp. Pardon my ignorance.

 

[apbinu]

Both Active & passive sub are connected to amp. The passive sub will drive power (i.e current) from your amp L+R channel & the amplification from the amp itself.

However in case of Active Sub it has external power (i.e current) source & it will have builtin amplifier along with crossover settings. which is more preferred if you need more out of the sub. Hence Active Subs are always preferred over Passive once.

 

[kamal1675]

Both Active & passive sub are connected to amp. The passive sub will drive power (i.e current) from your amp L+R channel & the amplification from the amp itself.

However in case of Active Sub it has external power (i.e current) source & it will have builtin amplifier along with crossover settings. which is more preferred if you need more out of the sub. Hence Active Subs are always preferred over Passive once.

ok... got it.. thanks a lot

 

[MaSh]

First of all thanks for the detl reply. I understood everything except the connotation of active and passive sub. U said that active has own amp and passive relies on stereo amp, but as such I will be connecting it to stereo amp so, will it not work that way. I mean why should I use active sub when I have amp. Pardon my ignorance.

Yes as explained above Active sub have an internal amplifier designed to drive a bigger driver meant for bass frequencies. Bass frequencies need more power. Passive subs draw power from the amplifier it is connected to. Not all amplifiers are capable of delivering the power needed to drive a bass driver, hence its always a bit of a compromise and unnecessary strain on the amplifier.

MaSh

 

[ketanpote69]

Hey guys sorry to join late as well explained by MaSh u can do alternatively for guys who does not have A/B , Sub Spk option.
Jamo came up with a network which converts stereo output to 2.1 . The sub out put is line level and serves most stereo amps



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[kamal1675]

Yes as explained above Active sub have an internal amplifier designed to drive a bigger driver meant for bass frequencies. Bass frequencies need more power. Passive subs draw power from the amplifier it is connected to. Not all amplifiers are capable of delivering the power needed to drive a bass driver, hence its always a bit of a compromise and unnecessary strain on the amplifier.

MaSh

ok.. thanks