Kofi Annan in: "Subs -n- Supravox!"

Kofi Annan · 27th October 2009, 02:04 AM

Hey!

So, I just finished the Steve Bench phono pre with Salas' shunt regulator for the power supply and it's time to talk subwoofers.

My current system includes some 300b monoblocks into either a pair of Fostex 206e backhorns (in the 208E-Sigma enclosure) or a set of Supravox 215 signature bicones run on open baffle, which is what we're here to discuss.

I'm thinking I would run some Eminences (Alpha?) with the open baffle Supravoxes, but any guidance on this would help. They're in a pretty big room and I need a good degree of bass help to round out the sound.

Any advice would be appreciated.

Kofi

Glowbug · 27th October 2009, 05:21 AM

Do they have to be OB or are "box" sub designs OK?

picowallspeaker · 27th October 2009, 07:49 AM

Chambered downfiring woofers ,high sensibility ones ,which may be difficult to find , so SS amp with average 88 SPL woofers.
My question is if R U going to cross and amp them 'ctive ?

Kofi Annan · 27th October 2009, 12:02 PM

Quote:

Originally Posted by Glowbug

Do they have to be OB or are "box" sub designs OK?

I am open to all ideas. I have seen a pair of Alphas per channel and one Supravox on one OB before and I thought that had potential, but I am willing to consider anything.

Quote:

Originally Posted by picowallspeaker

Chambered downfiring woofers ,high sensibility ones ,which may be difficult to find , so SS amp with average 88 SPL woofers.
My question is if R U going to cross and amp them 'ctive ?

Mmmmm... I thought I would keep it simple and have the subs run from a plate amp, but I would also consider active / ss amping them. I would need guidance on all of this, of course...

Kofi

chris661 · 28th October 2009, 10:14 PM

A pair of Alpha 15s are common here, but only on OB - you couldn't make a boxed sub with them.

Chris

Sheldon · 28th October 2009, 11:10 PM

Might check here for inspiration: http://www.lampizator.eu/SPEAKERS/PR...0projects.html

nigelwright7557 · 28th October 2009, 11:50 PM

I use 18 inch 650WRMS Eminence Sigma Pro's in my big setup.

Kofi Annan · 29th October 2009, 12:59 AM

Quote:

Originally Posted by chris661

A pair of Alpha 15s are common here, but only on OB - you couldn't make a boxed sub with them.

Chris

So, if I wanted to OB these with the Supravoxes, what would be your recommendation. I am new to subs, so please be gentle.

Kofi

Kofi Annan · 31st October 2009, 02:09 PM

Anyone?

Also, any ideas on designs for active crossovers?

Kofi

AdamThorne · 31st October 2009, 03:01 PM

As far as active crossover goes I've got a reckhorn f-1. ~$50 from CSS. It's much nicer than what was in my plate amp. I like it a bunch.
Creative Sound - Product Details

Emminence or big cheap Goldwoods in an H-frame is what I see mentioned for open subs, not that I've experimented with that setup...

27th October 2009, 02:04 AM	#1
Kofi Annan diyAudio Member Join Date: Jan 2004 Location: US	Kofi Annan in: "Subs -n- Supravox!" Hey! So, I just finished the Steve Bench phono pre with Salas' shunt regulator for the power supply and it's time to talk subwoofers. My current system includes some 300b monoblocks into either a pair of Fostex 206e backhorns (in the 208E-Sigma enclosure) or a set of Supravox 215 signature bicones run on open baffle, which is what we're here to discuss. I'm thinking I would run some Eminences (Alpha?) with the open baffle Supravoxes, but any guidance on this would help. They're in a pretty big room and I need a good degree of bass help to round out the sound. Any advice would be appreciated. Kofi

27th October 2009, 05:21 AM	#2
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	Do they have to be OB or are "box" sub designs OK? __________________ Jim J.

28th October 2009, 10:14 PM	#5
chris661 diyAudio Member Join Date: Feb 2008 Location: Lancashire Blog Entries: 6	A pair of Alpha 15s are common here, but only on OB - you couldn't make a boxed sub with them. Chris __________________ iPod Touch (playing LossLess) > 4th order LR crossover @80Hz > Amp-6b > Fostex FE126eN in folded ML-Voigt Pipes ------------------------------------------------------------> Samson Servo 240 > W6-1139SG Tapped Horns

28th October 2009, 11:50 PM	#7
nigelwright7557 diyAudio Member Join Date: Apr 2008 Location: Carlisle, England	I use 18 inch 650WRMS Eminence Sigma Pro's in my big setup. __________________ http://www.murtonpikesystems.co.uk PCBCAD40 pcb design software.

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27th October 2009, 07:49 AM	#3
picowallspeaker diyAudio Member Join Date: Apr 2007	Chambered downfiring woofers ,high sensibility ones ,which may be difficult to find , so SS amp with average 88 SPL woofers. My question is if R U going to cross and amp them 'ctive ?

28th October 2009, 11:10 PM	#6
Sheldon diyAudio Member Join Date: Dec 2003 Location: San Diego	Might check here for inspiration: http://www.lampizator.eu/SPEAKERS/PR...0projects.html

31st October 2009, 02:09 PM	#9
Kofi Annan diyAudio Member Join Date: Jan 2004 Location: US	Anyone? Also, any ideas on designs for active crossovers? Kofi

31st October 2009, 03:01 PM	#10
AdamThorne diyAudio Member Join Date: Oct 2006 Location: Minneapolis, MN	As far as active crossover goes I've got a reckhorn f-1. ~$50 from CSS. It's much nicer than what was in my plate amp. I like it a bunch. Creative Sound - Product Details Emminence or big cheap Goldwoods in an H-frame is what I see mentioned for open subs, not that I've experimented with that setup...

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