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Old 24th December 2005, 02:46 AM   #1
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Default Let me know what you think.

Here my design for my passive pre-amplifier. It does have two active crossovers in it to make a high pass for the TB's and a low pass for subwoofer. I also threw in a volume control, source selector, and gain controls for each channel of the high pass, and one for the low pass. Those are important because I do not plan on a volume control on my amplifier, just an on and off switch. I might take out the subwoofer gain as the plate amplifier has one, but it would be convenient to have one on hand and not under the desk.

I currently have the TB W3-871's, which I plan to switch over to John "Zaph" Krutke's box 3 design with notch filter.

The subwoofer will be a TB W6-1139SG ported to 34 Hz, in a .5 cubic foot box. Dimensions are, 10.6 W, 15.4 H, 7.8 D, with 1 inch diameter port by three inches long, Powered by a Dayton 25wRMS plate amplifier. It gives a nice flat output, and has -3db roll off at 30 Hz. Not bad for a 6.5 inch woofer huh?

The Hagerman bugle may come a bit later.... I plan to have a separate power supply from the bugle itself because of the design of the bugle. I can also run it on 9v batteries if I need too.

The crossovers and power supply are made by Marchand Electronics Inc. They are kits, as well as the amplifier by Tubes and More. Chassis choices are undetermined.

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Click the image to open in full size.

Sorry about the sideway image, photobucket would not take it horizontally, at least at a decent size.
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Old 24th December 2005, 08:05 AM   #2
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Why the hell does no one have any input? I can not even begin to see why this holds zero interest in any way, but other topics can go on for days about silly things.
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Old 24th December 2005, 01:09 PM   #3
lineup is offline lineup  Sweden
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Quote:
Powered by a Dayton 25wRMS plate amplifier.
I hope this is a transistor amplifier. But that 'plate' makes me suspicous
Otherwise 25wRMS to subwoofer and 2x8wRMS is a good level of power.
95% of people wouldnt ever need more. ( Discotechque Owners excluded )

The Tagband TB W3-871 are good speakers.
There are probably many around here that can give hints on using them.

I would most probably be happy with yout setup.
What I have understood Bugle is an affordable Phono amp
with very good quality.
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Old 24th December 2005, 06:40 PM   #4
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Yes the Dayton is a transistor amplifier. http://www.partsexpress.com carries the Dayton lines. Plate as in made to attach to a subwoofer box.

The Bugle is "so affordable" you can choose to use 9v batteries instead of a power supply, but only get around sixteen hours of playback I believe. http://www.hagtech.com/ I plan to incorperate the power supply, but perhaps not right away. Another thought is the power supply from my preamplifier could power this I think.... I would just have to make some sort of power supply connection jack on both. This would however make the Bugle pretty much inserparable from the preamp. Perhaps I should just throw the Bugle into the preamplifier?
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