Bryston 10B crossover and Magnepan Magneplanar

zoltm2001 · « **on:** 26 Oct 2009, 02:08 am »

Hi fellow Bryston fans,

I am considering to explore the Active Crossover foray with my Magnepan 3.5. Could someone please kindly advise, which flavor of Bryston 10B that I should choose. I saw that there is 10B-STD, 10B-LR and 10B-sub.

I am very confused.

Thanks

James Tanner · « **Reply #1 on:** 26 Oct 2009, 11:11 am »

Quote from: zoltm2001 on 26 Oct 2009, 02:08 am

Hi fellow Bryston fans,

I am considering to explore the Active Crossover foray with my Magnepan 3.5. Could someone please kindly advise, which flavor of Bryston 10B that I should choose. I saw that there is 10B-STD, 10B-LR and 10B-sub.

I am very confused.

Thanks

Hi,

10B Sub - it has the exact slopes and frequencies needed.

james

zoltm2001 · « **Reply #2 on:** 26 Oct 2009, 04:36 pm »

James,

Thanks very much for your reply. I am indeed considering a pre-own unit of 10-STD.

Can you let me know if a 10-STD can be configured to use with MG 3.5?

Also, may I also know if it's possible to easily to switch a 110V mains 10B-STD to operate in 220V mains country?

Many thanks.

James Tanner · « **Reply #3 on:** 26 Oct 2009, 04:39 pm »

Hi zoltm2001,

No the Standard can not be used because the crossover frequencies are incorrect.
The transformers are different for the 120/60Hz and the 220/50Hz versions so it is not easily switched.

james

zoltm2001 · « **Reply #4 on:** 27 Oct 2009, 03:47 pm »

Hi James,

Please do not find it offensive. I am new to this active crossover thing and I find no better place to seek education and enlightenment.

A quick check in the Bryston website it shows that both its high and low pass can be set at 70, 100, 140, 200, 300, 450, 700, 1K, 1.4K, 2K, 3K, and 4.5K Hz with slopes of 6, 12, or 18 db/oct. I wonder why it is said that the 10B-STD would not be suitable for the MG3.5 active crossover application.

Thx.

James Tanner · « **Reply #5 on:** 27 Oct 2009, 04:00 pm »

Hi zoltm,

I just realized you have the 3.5 not the 3.6.
The 3.6 settings are:
Low Pass: 18dB per octave at 250Hz
High Pass: 6dB per octave at 200Hz

Are the 3.5's different?

james

zoltm2001 · « **Reply #6 on:** 28 Oct 2009, 12:19 am »

James,

Per the MG3.5 manual, I read below

Loss Pass: 18db per Octave at 200 Hz
High Pass: 12db per Octave at 200 Hz
--OR-- 6db per Octave at 250 Hz

Page 11 http://www.integracoustics.com/MUG/MUG/pix/mg3.5_manual.pdf

If this is the case, would 10B-STD work?

Look forward to you further advice. I am curious, what is the crossover points for MG3.6 as you aware.

zoltm2001 · « **Reply #7 on:** 28 Oct 2009, 12:23 am »

James,

Here is what I found for MG3.6, thanks to Google ^_^

Low Pass: 18dB per octave at 250Hz
High Pass: 6dB per octave at 200Hz

P.10 in http://www.magnepan.com/content/binary/pdf_manuals/MG36.pdf

James Tanner · « **Reply #8 on:** 28 Oct 2009, 12:25 am »

Hi zoltm2001,

Well you're OK with the 200Hz setting on the 3.5 but not he 250Hz setting on the standard then.

The 3.6 crossover points are as stated above.

james

TitaniumTroy · « **Reply #9 on:** 5 Apr 2011, 02:56 am »

James, could you give me a general price range for used 10B-Sub's?

James Tanner · « **Reply #10 on:** 5 Apr 2011, 11:00 am »

Quote from: TitaniumTroy on 5 Apr 2011, 02:56 am

James, could you give me a general price range for used 10B-Sub's?

I would say around $1500 to 2K depending on condition.

james

TitaniumTroy · « **Reply #11 on:** 5 Apr 2011, 06:15 pm »

Thanks for the info James.

ecdcyc · « **Reply #12 on:** 13 Jul 2011, 08:07 am »

Hi James,

I have the 1.7s. I'm thinking about using Bryston 10B too. My question is a little bit long.

My previous loudspeakers were the Audio Artistry Dvorak (http://www.audioartistry.com/), which are dipole by nature too. The Dvorak is a five piece system: two main speakers for 100hz and up, two woofers for 20-100hz, and a crossover. The crossover can only control the volume of the woofers. The crossover point is fixed at 100hz and not adjustable. My preamp has two sets of outputs. If I connect one sets to the 1.7s, and the other to the corssover and woofer, there is too much bass. My question is, if I insert a 10B to adjust the crossover point, do I still need the Dvorak crossover? Which 10B is right for me?

BTW, I just got the BDP-1 two days ago, and it's terrific. Thanks.

Chihyi

James Tanner · « **Reply #13 on:** 13 Jul 2011, 10:34 am »

Quote from: ecdcyc on 13 Jul 2011, 08:07 am

Hi James,

I have the 1.7s. I'm thinking about using Bryston 10B too. My question is a little bit long.

My previous loudspeakers were the Audio Artistry Dvorak (http://www.audioartistry.com/), which are dipole by nature too. The Dvorak is a five piece system: two main speakers for 100hz and up, two woofers for 20-100hz, and a crossover. The crossover can only control the volume of the woofers. The crossover point is fixed at 100hz and not adjustable. My preamp has two sets of outputs. If I connect one sets to the 1.7s, and the other to the corssover and woofer, there is too much bass. My question is, if I insert a 10B to adjust the crossover point, do I still need the Dvorak crossover? Which 10B is right for me?

BTW, I just got the BDP-1 two days ago, and it's terrific. Thanks.

Chihyi

Hi

What slope is the Artistry crossover using on both the high pass and low pass section?

Thanks for the kind comment on the BDP - it has been the most successful new product launch yet

James

ecdcyc · « **Reply #14 on:** 14 Jul 2011, 01:58 am »

Thanks for the quick reply. The Dvorak was designed by Linkwitz of the Linkwitz-Riley crossover. It seems Audio Artistry is out of business, although its website is still alive. The manual only says the design is based on Linkwitz's AES paper:

http://www.linkwitzlab.com/AES'92/compact%20dipole.htm

On section 3.5, page 8, he says "The active crossover networks are designed for a 24db/oct acoustic filter response. The 100 Hz low pass filter that attenuates the high frequency output from the woofer and the 1.7 kHz low pass for the midrange to tweeter crossover are realized as electrical filters without any further correction for the acoustic behavior of the drivers."

Re: bdp-1. What I like about it is I don't need to have a pc in my audio system to enjoy the service of a pc.

James Tanner · « **Reply #15 on:** 14 Jul 2011, 02:45 am »

Quote from: ecdcyc on 14 Jul 2011, 01:58 am

Thanks for the quick reply. The Dvorak was designed by Linkwitz of the Linkwitz-Riley crossover. It seems Audio Artistry is out of business, although its website is still alive. The manual only says the design is based on Linkwitz's AES paper:

http://www.linkwitzlab.com/AES'92/compact%20dipole.htm

On section 3.5, page 8, he says "The active crossover networks are designed for a 24db/oct acoustic filter response. The 100 Hz low pass filter that attenuates the high frequency output from the woofer and the 1.7 kHz low pass for the midrange to tweeter crossover are realized as electrical filters without any further correction for the acoustic behavior of the drivers."

Re: bdp-1. What I like about it is I don't need to have a pc in my audio system to enjoy the service of a pc.

OK you could use our LR crossover set at 100HZ.

james

ecdcyc · « **Reply #16 on:** 15 Jul 2011, 01:09 am »

So if I can find a 10B-LR, then your suggestion is to run the Maggie 1.7 full range from the preamp, and run the Dvorak woofers from the 10B? Or should I run both from the 10B? Thanks.

James Tanner · « **Reply #17 on:** 15 Jul 2011, 02:17 am »

Quote from: ecdcyc on 15 Jul 2011, 01:09 am

So if I can find a 10B-LR, then your suggestion is to run the Maggie 1.7 full range from the preamp, and run the Dvorak woofers from the 10B? Or should I run both from the 10B? Thanks.

Good question - I would try it both ways. Integration is the key.

james

klao · « **Reply #18 on:** 2 Sep 2011, 08:30 pm »

Hi James,

1. If I wish to add a sub or two to the Maggie 3.7 (with their internal crossovers), then the 10B-Sub can be used as shown in p.6 of the 10B manual "Hookup Example for Using a Common (L+R) Subwoofer", correct?

2. Should I cut off the low frequency point between the mains and the sub(s) at 80Hz as suggested in this article http://www.soundoctor.com/whitepapers/subs.htm , as low as 40Hz, or somewhere in between?

3. For HT hookup with "small" center speaker (no center DMW or CC stand / woofer panel), the Magnepan manuals suggest setting AVR/Processor with "no sub"; "large mains L&R"; and "200Hz" for small speakers, so that full range signals will pass through to the main L&R speakers in order to augment small center speaker. Would selecting any of the LF point in question 2. above for two-channel + sub(s) music listening affect this kind of HT setup suggested by Magnepan?

Many thanks,
Klao

James Tanner · « **Reply #19 on:** 2 Sep 2011, 08:59 pm »

Quote from: klao on 2 Sep 2011, 08:30 pm

Hi James,

1. If I wish to add a sub or two to the Maggie 3.7 (with their internal crossovers), then the 10B-Sub can be used as shown in p.6 of the 10B manual "Hookup Example for Using a Common (L+R) Subwoofer", correct?

Correct

Correct2. Should I cut off the low frequency point between the mains and the sub(s) at 80Hz as suggested in this article http://www.soundoctor.com/whitepapers/subs.htm , as low as 40Hz, or somewhere in between?

Its a bit of a crap shoot because where you are vs where the sub is vs where the mains are all affect the phase of the system. sound doctor feels the impulse response is more critical and therefore crossing over at 80Hz and running the mains only down to 80 is his preferred method.

3. For HT hookup with "small" center speaker (no center DMW or CC stand / woofer panel), the Magnepan manuals suggest setting AVR/Processor with "no sub"; "large mains L&R"; and "200Hz" for small speakers, so that full range signals will pass through to the main L&R speakers in order to augment small center speaker. Would selecting any of the LF point in question 2. above for two-channel + sub(s) music listening affect this kind of HT setup suggested by Magnepan?

Yes I think they feel that the mains should full range because they believe dynamic subs do not integrate well with the panels.

Many thanks,
Klao