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September 20, 2017, 10:32:48 pm

Author Topic: Can this make a good Woofer Amp?  (Read 661 times)

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Offline Alonzo

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Can this make a good Woofer Amp?
« on: June 14, 2017, 08:25:33 pm »
Looking for a new project and wondered if the Seductor would support some 10 -12" woofers?  Just need it to fill in the low for my MMG's, building stands for them and I have just enough space for a 10" below them so can I stay all BH gear and power the woofers with a Seductor?  From like 200 Hz down, I have some outputs to try out with some BH-5's and some TFA-2004Jr's needing a home.
Debut Carbon-Budgie Phono
Desktop-Eitr-BiFrost MB1
BS Node2-BiFrost MB2
BeePre
S'mour EML 45 EXO-145Ni-FE206en OB
S'mour 2A3 40 -TFA2004 Quad PS-MMGs
S'mour II 2A3 Mesh-TFA2004 Ni-PS PE290-914 OB's
S'mour 45 TL404 FT17H Tweeters
Mainline w/TL404's - HD800
PE APA150 - VS8 subs

Offline Doc B.

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Re: Can this make a good Woofer Amp?
« Reply #1 on: June 15, 2017, 05:46:23 am »
You haven't told us the sensitivity.
Dan "Doc B." Schmalle
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Bottlehead Corp.

Offline Alonzo

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Re: Can this make a good Woofer Amp?
« Reply #2 on: June 15, 2017, 06:04:48 am »
I have the Peerless 10" that is rated at 86 dB.  I was looking at getting a Burro that is 92 or a Dayton woofer that is 90dB to try out.
Debut Carbon-Budgie Phono
Desktop-Eitr-BiFrost MB1
BS Node2-BiFrost MB2
BeePre
S'mour EML 45 EXO-145Ni-FE206en OB
S'mour 2A3 40 -TFA2004 Quad PS-MMGs
S'mour II 2A3 Mesh-TFA2004 Ni-PS PE290-914 OB's
S'mour 45 TL404 FT17H Tweeters
Mainline w/TL404's - HD800
PE APA150 - VS8 subs

Offline Doc B.

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Re: Can this make a good Woofer Amp?
« Reply #3 on: June 15, 2017, 08:38:00 am »
Of course it will work from a basic functionality standpoint, but you really need more like a 96dB woofer setup to get to the 102dB max we suggest as the "able to play anything" power level. Perhaps look at the calculated peak output level of the MMGs with the amps they run on, and plan to have enough bass driver sensitivity and/or amp power to be able to match that peak output level. As an example my old speakers have an 8 ohm 96dB woofer array that goes to 105db peaks with an 8 watt Paramount. I needed 32 watts into the 4 ohm midrange driver to keep up, because it was only rated 90dB (power requirement equivalent to an 87dB 8 ohm driver). Hence I used four Paramounts in series on the midrange. 
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline Alonzo

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Re: Can this make a good Woofer Amp?
« Reply #4 on: June 15, 2017, 05:37:49 pm »
Hmmm, this is going to be an interesting boondoggle.  Not much for measurements on the web, and I would have to measure them in place to set things up right.
Debut Carbon-Budgie Phono
Desktop-Eitr-BiFrost MB1
BS Node2-BiFrost MB2
BeePre
S'mour EML 45 EXO-145Ni-FE206en OB
S'mour 2A3 40 -TFA2004 Quad PS-MMGs
S'mour II 2A3 Mesh-TFA2004 Ni-PS PE290-914 OB's
S'mour 45 TL404 FT17H Tweeters
Mainline w/TL404's - HD800
PE APA150 - VS8 subs

Offline Doc B.

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Re: Can this make a good Woofer Amp?
« Reply #5 on: June 16, 2017, 05:52:40 am »
All you need is the sensitivity and impedance specs of the speaker, and the output power of the amp driving them into that impedance to figure how loud they can play.

The MMGs are 86 dB at 2.83V and are 4 ohms. What is the amp power?
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline xcortes

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Re: Can this make a good Woofer Amp?
« Reply #6 on: June 16, 2017, 07:04:33 am »
Try one amp. If you need more juice try two, and so on...
Xavier Cortes

Offline Doc B.

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Re: Can this make a good Woofer Amp?
« Reply #7 on: June 16, 2017, 09:09:48 am »
OK, I just looked at your gear list, duh. The MMGs are used with a Stereomour. So the demands on a sub amp are minimal. The 86dB Peerless will indeed be a reasonable match used with a Seductor.
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline Alonzo

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Re: Can this make a good Woofer Amp?
« Reply #8 on: June 16, 2017, 07:12:05 pm »
Thanks,
Soon as I figure out my username/password I'll get an order in (got the dreaded "not authorized" page using my forum credentials).
Debut Carbon-Budgie Phono
Desktop-Eitr-BiFrost MB1
BS Node2-BiFrost MB2
BeePre
S'mour EML 45 EXO-145Ni-FE206en OB
S'mour 2A3 40 -TFA2004 Quad PS-MMGs
S'mour II 2A3 Mesh-TFA2004 Ni-PS PE290-914 OB's
S'mour 45 TL404 FT17H Tweeters
Mainline w/TL404's - HD800
PE APA150 - VS8 subs

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Re: Can this make a good Woofer Amp?
« Reply #9 on: June 16, 2017, 08:17:52 pm »
Forum and shopping cart are completely separate accounts.  By default, the shopping cart user name is your e-mail (you have at least two accounts, one with your att e-mail, and one with your yahoo), and if you do not remember your password, it can be reset at this link.
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