Triumph subwoofer questions

[Mdchambe]

Got the amp and took the sub for a test drive before putting the cosmetic finishes on things.

Ive got an issue going on, perhaps with the output levels of the pre amp outputs in the audiolabs 6000a integrated? It took setting the dayton volume/gain all the way up and having the volume on the audiolabs nearly all the way up for the subwolfer to really get going. It did finally get there but at a volume much louder than i'd typically be listening.

I didn't have left and right speakers hook up, just the sub, but I'm nearly certain at the levels I'd be listening I'd never hear any appreciable output from the sub.

Any thoughts would be appreciated!

[Mdchambe]

Wow I just can't make up my mind on the amplifier for this. Nobsound going back as I couldn't come up with a solution I'd be happy with for mounting/placing this.

I ended up ordering a dayton apa-150 monoblock.

[djg]

Nice work. I got my 8" Designer series PR and a terminal cup yesterday. I'm going to make a passive Biumph with the terminals mounted on the bottom per Tom Zarbo. Good idea. I also got a Fosi Audio BT30D Pro 2.1 amp, which has two of the same TPA 3255 chips as your Nobsound sub amp. I'll make a thread later this year when it's warm enough to work in my garage.

[Mdchambe]

An afternoon off plus a parts express delivery means more progress. Trim routed the front and rear baffles. Cut out the openings for the driver and passive radiators. I haven't been using this circle cutting jig for long so I find it pretty rewarding. Depth for drivers and opening diameters might not be perfect but I'm happy with my work. The depth will be impacted by the compression of the gasket and veneer thickness.

I got a chuckle that the shipping box is significantly bigger than the subwoofer enclosure!

[Mdchambe]

Bit more progress this morning. Will slow down from here as I wait for driver/PRs/amp/veneer.

Here's is the enclosure back with amplifier pocket. Front and rear panels slightly oversized and will flush trim on the router. Front and back panels glued and taped to hold in place while clamping.

I did decide to give the little Nobsound G2 Pro amplifier a try for this. For 60 bucks why not? I'm hoping I can mount the little guy inside the amplifier recess and still be ae to access the controls.

[Mdchambe]

Thanks. They were on sale recently so I splurged. I sure do like the Jorgensens.

[djg]

Nice clamps.

[Mdchambe]

To the OP, please post pictures of your project.

With the loss of the Peerless PRs, I looked at Tom Z's Epique subs, but decided too expensive and overqualified for the bedroom 2.1. I ended up ordering one 8" PR and going with Wolf's "Biumph". I have the little Tang Band sub in DanP's NRNP sub. This sub is cute and very small but doesn't. fully utilize the TB's abilities. Got away cheap this time.

Will do. Did some cutting today and started assembly of the box. Also made the recess for the amplifier. The 300d amp is currently backordered for a month or so so I'm trying to decide if I want to wait or go in another direction.

Current status:

[djg]

To the OP, please post pictures of your project.

With the loss of the Peerless PRs, I looked at Tom Z's Epique subs, but decided too expensive and overqualified for the bedroom 2.1. I ended up ordering one 8" PR and going with Wolf's "Biumph". I have the little Tang Band driver in DanP's NRNP sub. This sub is cute and very small but doesn't. fully utilize the TB's abilities. Got away cheap this time.

[Mdchambe]

That's a considerable upswing in cost...
Wolf

It is indeed. I'm hoping iny large space a single enclosure will be sufficient.

I had indeed hoped to do a pair of cheaper alternatives.

[Wolf]

That's very close to and uses the same PR as my Biumph design. Since the Triumph was flat to 40Hz, that was the initial target for the Biumph. More mass droops the start of the rolloff so I kept that amount lower, IIRC. It even mentions the last time the PRs were discontinued below...

I just verified, Biumph uses 26g added mass.

https://techtalk.parts-express.com/forum/tech-talk-forum/31722-biumph-aka-triumph-v2

Wolf

[isaeagle4031]

If you want to stay with the W5-1138, a 9.5" cube assuming .75 material and a DS215PR with 75g added mass yields an F3/6/10 of about 35/33/30. With 50w of power, it yields 98db with the PR just breaking its Xmax.

My plan is to build 2 (parts are already on hand) and power them with an APA150. With its built in xover and adjustable volume/gain, should be a nice little setup.

[Wolf]

And an update. The Michigan source is out of stock, and refunded my order once they came to their senses. Goodbye Triumph.

Oh well, the design is 16 years old. I'm lucky it lasted that long.
I still plan on a remodel with available PRs for verification. There should be a viable alternative.
Wolf

[Wolf]

That's a considerable upswing in cost...
Wolf

[Mdchambe]

I'm going to go forward with tomzarbo triple seven subwoofer.

Parts ordered.

Thanks for everyone's help.