mfishmike's Photobucket root album media

Audience ClairAudient

mfishmike — Mon, 7 Sep 2009 07:47:33 MDT

mfishmike posted a photo

Audience ClairAudient - 26.jpg

www.speakerhobby.com

mfishmike — Mon, 12 Jan 2009 06:40:31 MST

mfishmike posted a photo

www.speakerhobby.com - NewGrillsL.jpg

New grills completed with the new equipment in place. 6 years of design and redesign to accomplish a very high quality sound system.

43 lb. center speaker

mfishmike — Mon, 12 Jan 2009 06:32:23 MST

mfishmike posted a photo

43 lb. center speaker - Center084.jpg

One of the most vocal center speakers I've ever heard. French build Davis Kevlar drivers, Israel made midrange, and HI VI research tweeter. Design plans at www.speakerhobby.com for free.

Auric interconnect wiring

mfishmike — Mon, 12 Jan 2009 06:30:19 MST

mfishmike posted a photo

Auric interconnect wiring - AuricWire2.jpg

I've used the fine Auric wire from Audience, the makers of AudioCap capactitors to wire my center speaker. A view of the crossover mounted before closing cabinet.

My Bang & Olufsen Redline 60 ABR conversion

mfishmike — Mon, 12 Jan 2009 05:59:02 MST

mfishmike posted a photo

My Bang & Olufsen Redline 60 ABR conversion - 2ndopenedup1.jpg

I picked up a free pair of these speakers and redesigned them hand have more photos at www.speakerhobby.com to show my build and more comments

Removing the defective ABR plates

mfishmike — Mon, 12 Jan 2009 05:59:01 MST

mfishmike posted a photo

Removing the defective ABR plates - 2ndopenedup2.jpg

Foam deteriorated and left this plate flopping around in the cabinet.

New parts not available

mfishmike — Mon, 12 Jan 2009 05:58:59 MST

mfishmike posted a photo

New parts not available - BOABR.jpg

There is no replacements ABRs now, so I modified this speaker with passive radiors.

New mounting board

mfishmike — Mon, 12 Jan 2009 05:58:58 MST

mfishmike posted a photo

New mounting board - BOconversion.jpg

I used the outer ring and a scroll saw to make a new mounting board.

Completed New Redline 60s

mfishmike — Mon, 12 Jan 2009 05:58:57 MST

mfishmike posted a photo

Completed New Redline 60s - Finishedinred1.jpg

The straps were missing so I used car pinstriping to finish the fronts to match the red around the sides of the speakers. Wonderful sounding speakers!

Hot waxed all mounting hardware

mfishmike — Mon, 12 Jan 2009 05:58:55 MST

mfishmike posted a photo

Hot waxed all mounting hardware - Hotwax1.jpg

Photo of the passives mounted.

Tricky installation of the new conversion

mfishmike — Mon, 12 Jan 2009 05:58:54 MST

mfishmike posted a photo

Tricky installation of the new conversion - Installdriversloose.jpg

It was difficult to remove the flat ABR plates, and adding the passive radiators was even more of a challenge to install the board.

My Redline mounted in the living room

mfishmike — Mon, 12 Jan 2009 05:58:52 MST

mfishmike posted a photo

My Redline mounted in the living room - InstallHome2.jpg

8 hours of night work to mount these speakers. I had to use all thread rods and secure them in the attic.

Surround Redline at beam

mfishmike — Mon, 12 Jan 2009 05:58:51 MST

mfishmike posted a photo

Surround Redline at beam - InstallHome3.jpg

I have the B & O Redlines in parallel for a 4 ohm load to the Rotel amplifier and the sound is unbeleivable. I'm constantly being surprised by new sounds I don't expect to hear from them. The NAD receiver has awesome processing.

Modification complete

mfishmike — Mon, 12 Jan 2009 05:58:49 MST

mfishmike posted a photo

Modification complete - passivesmounted.jpg

Now it's time to rebuild the crossovers.

Tymphany passive radiators test location

mfishmike — Mon, 12 Jan 2009 05:58:48 MST

mfishmike posted a photo

Tymphany passive radiators test location - pr1.jpg

Here is a shot of the passive radiators ready for mounting.

Crossover upgrades

mfishmike — Mon, 12 Jan 2009 05:58:46 MST

mfishmike posted a photo

Crossover upgrades - Upgrade3.jpg

The old capacitors are only 63 volt and electrolytic which die over time like a car battery. I've installed new capacitors and resistors with Solen polypropolene 400 volt caps and Mills resistors.

Finished crossover installed

mfishmike — Mon, 12 Jan 2009 05:58:45 MST

mfishmike posted a photo

Finished crossover installed - xovermounted.jpg

The crossover had to be moved over 1" to fit with the new crossover upgrade. Fantastic improvement in the musical quality.

Masonite boards after painting

mfishmike — Mon, 12 Jan 2009 05:58:43 MST

mfishmike posted a photo

Masonite boards after painting - Painted1.jpg

I've painted the mounting boards flat black so they can't be seen from the front of the speaker.

Crossover for the main speakers

mfishmike — Mon, 12 Jan 2009 05:49:57 MST

mfishmike posted a photo

Crossover for the main speakers - JanowitzXovers007.jpg

3 way 12 db crossover for the mains. My system delivers music like no commercaial movie theaters can deliver.

Center Speaker crossover

mfishmike — Mon, 12 Jan 2009 05:46:16 MST

mfishmike posted a photo

Center Speaker crossover - Center1000hz.jpg

Like the commercial speaker builders, I'm always improving my system. This is my lastest crossover design and build for the center speaker. What an improvement!

Lots of horsepower under the hood now

mfishmike — Mon, 12 Jan 2009 05:25:01 MST

mfishmike posted a photo

Lots of horsepower under the hood now - New-Gear24.jpg

I have added the new NAD T-785 next generation processor and installed an additional 200 x 5 Rotel amp for my main channels. You can see four amplifiers in the system now.

Elegant look

mfishmike — Mon, 12 Jan 2009 05:12:13 MST

mfishmike posted a photo

Elegant look - NewGrillsR-Copy.jpg

Gold nameplates add to their look. "Cason II" is the model.

Stacked subs

mfishmike — Mon, 12 Jan 2009 05:12:12 MST

mfishmike posted a photo

Stacked subs - SubGrills.jpg

Passive radiators on mains and subs are covered with new grills too.

New seating

mfishmike — Mon, 12 Jan 2009 05:12:10 MST

mfishmike posted a photo

New seating - Seating-web.jpg

6 Lazy Boy recliners have replaced the living room furniture. They can be moved around depending on the company. Home theatre and living room all in one.

Passive radiator re-design

mfishmike — Mon, 28 Jul 2008 05:32:28 MDT

mfishmike posted a photo

Passive radiator re-design - 800-600.jpg

I've rebuilt the subwoofers and mains again with new passive radiators. I removed the ports in the mains to eliminate the port noise and resonance and the passive radiators lowers the tuning frequency to 23.8 hz. I have installed a new 65" Mistubushi 1080P DLP TV. The center speaker under the tv is on a shelf I installed with a tilt to position the direction of the speaker to the listening area.

Side grills for mains

mfishmike — Mon, 9 Jun 2008 04:47:22 MDT

mfishmike posted a photo

Side grills for mains - Mains-sidegrills.jpg

I put a lot of time in sanding, painting, resanding, and painting again to make these red oak grill frames nice. I built these to cover the new passive radiators just installed on the mains and more black grill cloth is scheduled to be delivered soon.

Flat passive radiator loaded to 1800 grams

mfishmike — Sat, 7 Jun 2008 11:31:30 MDT

mfishmike posted a photo

Flat passive radiator loaded to 1800 grams - 12-spoke-1050-15rear-Copy.jpg

I've rebuilt the two subwoofers and installed 8 of these passive radiators bringing my box tuning down from 25 hz to 18 hz. What an incredible low and clean bass for low and high listening levels to your favorite jazz and blues music.

Top view of new 15" passive radiator

mfishmike — Sat, 7 Jun 2008 11:31:28 MDT

mfishmike posted a photo

Top view of new 15" passive radiator - 12-spoke-1050-15-top-Copy.jpg

These flat passives have a fs of 4 instead of the fs of 18 that the Parts Express Eminence passives had.

Mass weights & Epoxy curing

mfishmike — Sat, 7 Jun 2008 11:31:27 MDT

mfishmike posted a photo

Mass weights & Epoxy curing - DSC00002.jpg

I brought the last four passive radiators into the house for overnight curing of the epoxy used in adding the extra mass.

View of the twin stacked subs

mfishmike — Sat, 7 Jun 2008 11:31:26 MDT

mfishmike posted a photo

View of the twin stacked subs - DSC00005.jpg

Pardon the vintage speakers in the lower right of the photo. The mains are out in my shop while I'm putting the passive radiators that used to be in these subs into the mains.

Better side view of the subs

mfishmike — Sat, 7 Jun 2008 11:31:24 MDT

mfishmike posted a photo

Better side view of the subs - DSC00006-Copy.jpg

The Bang and Olufsen shown in the lower right corner of the picture will become one of my surround speakers paralleled with my Polk RC85-I in-ceiling surround for an awesome HT setup. I've got B & W in the rear. This pair of B & O speakers was a gift from a customer and are displayed in the Museum of Modern Arts for their innovation, design, and musical quality. The new flat passive radiators in the subs are the new Acoustic Elegance 15" 1050 gram drivers I loaded to 1800 grams each. I installed the Eminence 1100 gram passive radiators in the mains.

Nice view of the inside

mfishmike — Sat, 7 Jun 2008 11:31:23 MDT

mfishmike posted a photo

Nice view of the inside - InsidewithPRs.jpg

Full eggcrate foam lining, horizontal bracing, and a full shelf brace for a sturdier cabinet to reduce and/or eliminate cabinet resonance. I also used the vinyl sealing gasket around the new baffels when installing them.

Mains rebuilding going on here

mfishmike — Sat, 7 Jun 2008 11:31:21 MDT

mfishmike posted a photo

Mains rebuilding going on here - InstallingEminencepassiveradiators.jpg

On the carpet you can see the vinyl sealing product I used prior to installing the passives. Once they were installed each passive and attaching screw holes were carefully caulked with black 50 year caulking to ensure an airtight cabinet.

Installed the Eminence passive radiators and removed the ports

mfishmike — Sat, 7 Jun 2008 11:31:20 MDT

mfishmike posted a photo

Installed the Eminence passive radiators and removed the ports - Mains-Pr1.jpg

Vance Dickason, a leading specialist in the audio field, instructs us that improperly placed ports can cause port resonances and other unwanted sounds to be multiplied by as much as 10 times. I know I had the ports way to close to the bottom of the cabinet so I used the passive radiators I already had removed from the subs and took full advantage of them, thus eliminating any possible port noise and resonance.

Graph of the Lambda drivers in the mains

mfishmike — Sat, 7 Jun 2008 11:31:19 MDT

mfishmike posted a photo

Graph of the Lambda drivers in the mains - NewGraphModel6cuftMains.jpg

Using the 4-15" Parts Express 1100 gram passive radiators removed from the subwoofers in the mains show the Lambda mid-woofer cabinet tuning being dropped from 30.04 to 23.83 hz. A very nice drop indeed!

Twin subwoofers with the Soundsplinter RLP-15" dual coil drivers

mfishmike — Sat, 7 Jun 2008 11:31:17 MDT

mfishmike posted a photo

Twin subwoofers with the Soundsplinter RLP-15" dual coil drivers - NewPassivesinstalled.jpg

I will turn this stacked subwoofer a little bit and use the corner loading for added room gain. These tested out at 18hz now and the bass is so clean and well defined. The mains are out in the shop for a major upgrade so the Bang and Olufsen speakers are being used as the temporary mains.

Out of the shop and on the way into the house now!

mfishmike — Sat, 7 Jun 2008 11:31:15 MDT

mfishmike posted a photo

Out of the shop and on the way into the house now! - Mains2.jpg

I took advantage of the sunshine to get a nice outdoor photo of the rebuilt mains in transport to the home from the shop in the foreground.

Mains finished with the Lambda drivers and new passive radiators

mfishmike — Sat, 7 Jun 2008 11:31:14 MDT

mfishmike posted a photo

Mains finished with the Lambda drivers and new passive radiators - Main.jpg

To properly repair the old port holes, new lower baffels had to be made and new Formica laminate installed to keep the quality look of my HT set up.

Side grills for the mains

mfishmike — Sat, 7 Jun 2008 11:31:11 MDT

mfishmike posted a photo

Side grills for the mains - Sidegrillsbuiltformains.jpg

I made these four grills for the sides of the mains to cover the newly installed passive radiators. A little hand sanding, flat black paint, and black grillcloth will finish them up and provide a very nice touch to the HT system.

Fantasic Subwoofer Equilizer and Bass Boost

mfishmike — Sun, 30 Mar 2008 06:49:52 MDT

mfishmike posted a photo

Fantasic Subwoofer Equilizer and Bass Boost - ReckhornB1Eq.jpg

This very well built German made EQ sold by CSS bridges the gap between home and pro audio equipment allowing them to work flawlessy together as one unit. I'm using it with my Rotel receiver and two QSC 1450 amps. Big difference in performance!

My recommended co-locating of these subs

mfishmike — Wed, 12 Mar 2008 19:25:17 MDT

mfishmike posted a photo

My recommended co-locating of these subs - 90.jpg

12-15" subwoofer drivers, 4 active and 8 passive radiators. These Eminance passives will be installed in the mains. I prefer this co-locating for best results and room gain. I'm using a QSC 1450 bridged amp with an 8 ohm load presented to each amplifier for each subwoofer. Each subwoofer driver has 2-2 ohm coils, 4 coils total, wired in series for an 8 ohms load. There's 470 lbs of weight here!

Final assembly of drivers

mfishmike — Wed, 12 Mar 2008 19:25:16 MDT

mfishmike posted a photo

Final assembly of drivers - 85.jpg

I had to finish the construction on the floor due to the weight. I've sealed all of the front baffel contact areas and the passive radiator holes. The wiring will be finished and secured with wire ties to eliminate rattles from the wire. I've used #12 awg speaker wire.

Drivers attached to the baffel ready to install

mfishmike — Wed, 12 Mar 2008 19:25:15 MDT

mfishmike posted a photo

Drivers attached to the baffel ready to install - 48.jpg

Here is an 85 lb assembly ready to drop in the front of the cabinet. Dual 2 ohm voice coil Soundsplinter RLP-15 drivers mounted on a Baltic Birch baffel. The missing screws on each side of each driver will be secured into the framing members of the cabinet when installed. The other mounting screws are machined stainless screws backed up with washers and nylon insert locknuts on the back of the baffel.

15" passive radiators ready to install

mfishmike — Wed, 12 Mar 2008 19:25:14 MDT

mfishmike posted a photo

15" passive radiators ready to install - 84.jpg

Parts Express 15" passive radiators made by Eminence Loudspeaker Company mass loaded to a total mms weighting of 1100 grams now ready for installing. I used 16-3/4 washers, 1-1/4" fender washer and locknut, sleeved by a 2" x 2 1/4" long emt tube and secured by a two part Devcon Epoxy.

4 passive radiators ready to assemble weights

mfishmike — Wed, 12 Mar 2008 19:25:13 MDT

mfishmike posted a photo

4 passive radiators ready to assemble weights - 81.jpg

Here are the necessary parts for total 1100 gram mms loading. 16-3/4" washers, 1 large 1/4" fender washer, nylon insert locknut, Devcon epoxy, and a piece of electrical EMT cut to 2.25". I've weighed them all on my previous subwoofer and kept records.

Close up view of the weight

mfishmike — Wed, 12 Mar 2008 19:25:13 MDT

mfishmike posted a photo

Close up view of the weight - 83.jpg

This passive radiator is rated for 1200 grams, but I've only loaded it to 1100. There is only a 1 hz difference in the box tuning and the passive radiator isn't overloaded.

Laid out and ready to load

mfishmike — Wed, 12 Mar 2008 19:25:12 MDT

mfishmike posted a photo

Laid out and ready to load - 79.jpg

Ready to start adding the weights.

Finished cabinet with seals in place

mfishmike — Wed, 12 Mar 2008 19:25:11 MDT

mfishmike posted a photo

Finished cabinet with seals in place - 78.jpg

The cabinet is fully lined with 1.25" of eggcrate acoustical foam, inserts are installed for grills, Pionite laminate is finished, and seals are in place, ready to assemble drivers.

Grills are finished and at the upholstery shop

mfishmike — Wed, 12 Mar 2008 19:25:10 MDT

mfishmike posted a photo

Grills are finished and at the upholstery shop - 75.jpg

I used Red Oak 1 x 2 framing material for a rigid frame. Corners are glued and screwed, and corner braces are glued and nailed. The large one has the braces screwed as well. All inside and outside edges routed with 1/2 round over bit to reduce tearing of the grill cloth material.

In the "paint booth"

mfishmike — Wed, 12 Mar 2008 19:25:09 MDT

mfishmike posted a photo

In the "paint booth" - 66.jpg

After routing the finished grills with a 1/2" round over bit, I've painted them with two coats of flat black paint so they will be hidden behind the grill cloth.

Final paint on the front trim work

mfishmike — Wed, 12 Mar 2008 19:25:08 MDT

mfishmike posted a photo

Final paint on the front trim work - 65.jpg

I installed 1.25" wood trim on front to protect the particle board construction and have applied three coats of spray enamel with fine sanding. All snap in grill assemblies have been drilled, glued, and inserted in the front and sides of the cabinet.

Finish trim with snap in grill cups installed

mfishmike — Wed, 12 Mar 2008 19:25:07 MDT

mfishmike posted a photo

Finish trim with snap in grill cups installed - 62.jpg

Drilled and installed inserts to hold snap on grills. If you look carefully, you can see the lateral braces extending out to between the passive radiator holes on the sides of the cabinet..

Testing the fit of the snap in grills

mfishmike — Wed, 12 Mar 2008 19:25:06 MDT

mfishmike posted a photo

Testing the fit of the snap in grills - 63.jpg

I love the strength of the Red Oak frame material. I always test the fit of them before sending them to the upholstery shop. I've made the side grills smaller for a bit of design change instead of a classic or standard speaker.

All three frames are finished

mfishmike — Wed, 12 Mar 2008 19:25:05 MDT

mfishmike posted a photo

All three frames are finished - 61.jpg

I'll have to drill out these routed frames and insert the male snap in grill fastners and check the fit on the cabinet before sending them out to have covered.

Dry fit of grill materials

mfishmike — Wed, 12 Mar 2008 19:25:04 MDT

mfishmike posted a photo

Dry fit of grill materials - 59.jpg

Here is a good shot of the corner braces to secure the sides and front grills. I've dry fitted the grill frames to ensure a proper fit.

Here is the added bracing and finished interior

mfishmike — Wed, 12 Mar 2008 19:25:03 MDT

mfishmike posted a photo

Here is the added bracing and finished interior - 45.jpg

I've screwed the bracing from the outside of the cabinet before the laminate and glued, nailed, and screwed all of the contact points. Full eggcrate acoustic lining.

Laminating procedure

mfishmike — Wed, 12 Mar 2008 19:25:02 MDT

mfishmike posted a photo

Laminating procedure - 38.jpg

I'm adding the Pionite laminate with the original Weldwood contact cement. The watered down version or enviromentally safe contact cement has come off of other projects so I stick (pun) to the original and more violatile product. Watch out for open flames while using this product and have plenty of ventilation.

Screw holes filled and sanded twice

mfishmike — Wed, 12 Mar 2008 19:25:01 MDT

mfishmike posted a photo

Screw holes filled and sanded twice - 32.jpg

All of the screw holes have been filled and sanded twice. The internal bracing screw holes have been filled too. The screws I've used are the large outdoor 3" decking screws instead of sheetrock screws. This is an extremely heavy cabinet.

Red Oak runners for feet

mfishmike — Wed, 12 Mar 2008 19:25:00 MDT

mfishmike posted a photo

Red Oak runners for feet - 11.jpg

The Red Oak feet I've installed have carriage bolts securing through to the inside of the cabinet further securing the Baltic Birch bottom. The bottom is 2" thick. All nail and screw holes to be sanded, then re-filled and sanded again for a premier finish.

Painting the front edge

mfishmike — Wed, 12 Mar 2008 19:24:59 MDT

mfishmike posted a photo

Painting the front edge - 24.jpg

I've painted the front facing of the cabinet so if the grills are off, one can't see the white wood between the joints of the baffel. Here you can see the added side bracing. Notice the rounding cuts of the framing on both sides of the cabinet. The drivers need this extra room to drop in.

The cutting of the driver hles

mfishmike — Wed, 12 Mar 2008 19:24:58 MDT

mfishmike posted a photo

The cutting of the driver hles - 21.jpg

After using my home made hole marking tool, I used a RotoZip cutting tool to cut the holes. It took one bit per hole on the 1.25" sidewalls of particle board. I finished them out with plenty of sanding to keep particles from coming loose and lodging in a driver.

Interior construction and bracing

mfishmike — Wed, 12 Mar 2008 19:24:57 MDT

mfishmike posted a photo

Interior construction and bracing - 1.jpg

I've added a 2" x 2" baffel support and additional internal bracing. I'll be putting more braces between the sides. Here is a good view of the glue and nail blocks in all of the corners.

Mike's jig, no patents pending

mfishmike — Wed, 12 Mar 2008 19:24:56 MDT

mfishmike posted a photo

Mike's jig, no patents pending - 19.jpg

Here's a simple way to make your holes without the expense of a special jig. After marking them, I used a rotozip and cut all of the holes and then sanded them smooth. Notice the high tech use of the finishing nail securing the pencil~~~~~~

Holes filled and sanded

mfishmike — Wed, 12 Mar 2008 19:24:55 MDT

mfishmike posted a photo

Holes filled and sanded - 17.jpg

I've filled all of the holes with wood filler and sanded them and then filled and sanded them again so when I add the Pionite laminate, the router will run smooth and the laminate will have a clean, straight edge for a nice finish.

3/4" Baltic Birch Bottom

mfishmike — Wed, 12 Mar 2008 19:24:54 MDT

mfishmike posted a photo

3/4" Baltic Birch Bottom - 6.jpg

I've added another layer of plywood for the bottom for strenghth and will attach Red Oak runners for feet. At 235 lbs., it is easier to slide than regular feet on carpets.

1.25" Particle Board Construction

mfishmike — Wed, 12 Mar 2008 19:24:53 MDT

mfishmike posted a photo

1.25" Particle Board Construction - 5.jpg

Beginning of project. All sides and bottom are glued and screwed with countersunk 3" deck screws. Interior glue blocks are glued and nailed too. A lot of speaker builders won't use screws and simply recommend using glue and lots of clamps and time to cure. I beleive strongly in using them as this is 1 1/4" thick material and there is a lot of internal pressure in these subwoofers.

First dual Soundsplinter subwoofer

mfishmike — Wed, 12 Mar 2008 19:24:52 MDT

mfishmike posted a photo

First dual Soundsplinter subwoofer - 72.jpg

Here is my first dual Soundsplinter subwoofer with 4 passive radiators. I've removed the grills for display purposes after stacking the second on on it, waiting on my upholstery shop to finish covering them with the grill cloth.

With opposing PRs the plant doesn\'t move at all!

mfishmike — Wed, 12 Mar 2008 19:24:50 MDT

mfishmike posted a photo

With opposing PRs the plant doesn\'t move at all! - PRinstall033.jpg

The cabinet is lined with 1 1/2" eggcrate foam.

mfishmike — Wed, 12 Mar 2008 19:24:49 MDT

mfishmike posted a photo

The cabinet is lined with 1 1/2" eggcrate foam. - 08df84a1.jpg

A view with some of the bracing. With all the drivers, there is not much more room for braces. These thick walls help.

mfishmike — Wed, 12 Mar 2008 19:24:48 MDT

mfishmike posted a photo

A view with some of the bracing. With all the drivers, there is not much more room for braces. These thick walls help. - ae763d09.jpg

Inside shot with close quarters. The weights aren\'t too close to be affected by the magnets.

mfishmike — Wed, 12 Mar 2008 19:24:47 MDT

mfishmike posted a photo

Inside shot with close quarters. The weights aren\'t too close to be affected by the magnets. - a7612362.jpg

Epoxy between every washer, and sleeve

mfishmike — Wed, 12 Mar 2008 19:24:47 MDT

mfishmike posted a photo

Epoxy between every washer, and sleeve - PRinstall017.jpg

Diaper to protect PR during epoxy of washers/tube. Use the container the epoxy came in to mix it.

mfishmike — Wed, 12 Mar 2008 19:24:46 MDT

mfishmike posted a photo

Diaper to protect PR during epoxy of washers/tube. Use the container the epoxy came in to mix it. - PRinstall013.jpg

Prs with washers temp fixed for testing in the cabinet. I then pulled them again and epoxied them together.

mfishmike — Wed, 12 Mar 2008 19:24:45 MDT

mfishmike posted a photo

Prs with washers temp fixed for testing in the cabinet. I then pulled them again and epoxied them together. - PRinstall018.jpg

17 washers and a 2\" x 2\" emt (conduit) to sleeve the washers.

mfishmike — Wed, 12 Mar 2008 19:24:44 MDT

mfishmike posted a photo

17 washers and a 2\" x 2\" emt (conduit) to sleeve the washers. - PRinstall010.jpg

A 100 year old very accurate chemist scale. I carefully weighed the washers and used the existing mms of the drive unit to come up with 1100 grams of weight.

mfishmike — Wed, 12 Mar 2008 19:24:42 MDT

mfishmike posted a photo

A 100 year old very accurate chemist scale. I carefully weighed the washers and used the existing mms of the drive unit to come up with 1100 grams of weight. - PRinstall006.jpg

Dayton 15\" PRs x 4 loaded to 1100 grams total.

mfishmike — Wed, 12 Mar 2008 19:24:41 MDT

mfishmike posted a photo

Dayton 15\" PRs x 4 loaded to 1100 grams total. - PRinstall003.jpg

My dual 15" active and 4 passive radiator sub. The weight is 235 lbs driven by a single QSC 1450 amplifier bridged mono, with the sub wired for an 8 ohm load. It reaches well below 20 hz for high quality music and movie reproduction and a very c

mfishmike — Wed, 12 Mar 2008 19:24:40 MDT

mfishmike posted a photo

My dual 15" active and 4 passive radiator sub. The weight is 235 lbs driven by a single QSC 1450 amplifier bridged mono, with the sub wired for an 8 ohm load. It reaches well below 20 hz for high quality music and movie reproduction and a very c - Finished005.jpg