New diy sub

**Warpdrv** · **10-21-09, 11:26 AM**

Very nice build Graham....

Congrats - your almost there...

**gperkins_1973** · **10-21-09, 11:47 AM**

Thanks mate. I should be almost there by the end of this weekend. My first diy sub and what a project.

cheers

Graham

**gperkins_1973** · **10-22-09, 04:28 PM**

Hi guys,

I am looking at getting some of these bolts along with some t nuts. I am only fixing them into 25mm mdf. I didn't think about doubling it up for fixing. Forgot all about it. Now I have fitted the two inners and braces it is going to be difficult to fix an extra thickness so I can fit 50mm bolts.

I suppose I could make a larger circle and glue it in with the bond and seal, then screw on the inside where the driver will sit.

Is 25mm going to be enough to keep those 50lb driver in tight.

These are the bolts I am looking at.

https://www.wilmslow-audio.co.uk/cat...64&language=en

Be good to get your thoughts

cheers

Graham

**gperkins_1973** · **10-23-09, 04:29 PM**

Hi guys,

Been busy again for a few hours in the garage. I have filled in some of the many holes with filler and sanded down. I have drilled the pilot holes for the outers and fitted my binding post for my wiring. I will be putting on the other side, the two outers and then fit the speaker wire along with the fiber fill and then put the lid on and then it just leaves the veneering, the routing of the corners to fit the quadrant and then add the feet.

I have also sanded the edges of the bracing circles just to smooth it all off.

Heres a few more pics for you. Sorry they aren't great I don't have photoshop on my pc.

cheers

Graham

**recruit** · **10-24-09, 06:39 AM**

Are you sure that you have never built a sub before as you are doing a mighty fine job so far Graham?

**gperkins_1973** · **10-24-09, 08:50 AM**

Recruit,

Never mate. I really hate diy and never do it. My poxy camera batteries have run out. Aaaaahhh!

My carpenter guy came over this morning to sort out the lid for me. He chisled out 2mm in grooves so the braces fit perfectly. Now the lid doesn't have sit proud of the sides. I have now fitted the two outers and filled. I have sanded the outer two circles as they didn't fit 100%. They are now and have filled the gaps between the outer panel and first inner panel so when I veneer in the inner circles of the box it will have a perfect smooth edge to stick to.

I have also fitted 8 little 25mm mdf squares to double up so I can fit the feet. I will be having 8 feet in total to be on the safe side. I am designing the grill to match the Monitor Audio RS speakers although I have not got the wood for these yet. I have ordered my hex bolts and t nuts so they should be here fingers crossed on Monday.

Left to do:

Fit the wiring. Doing today
Fit the fiberfill. Doing today
Fit the lid. Doing today
Veneer the inners of the outer circles. Doing next week
Fit and wire up the subs. Doing next week
Fit the side. Doing next week.
Fill and sand down any final holes. Doing next week
Veneer box. Doing next week
Routing edges and fitting 6mm quadrant. Doing next week
Varnishing box. Doing next week
Fit legs. Doing next week.

Blowing away neighbour. Defo doing next week.

God next week is going to be busy.

I will however test the sub when I get my bolts and t nuts to make sure all it well and just screw side in at the moment.

I think that is all.

Cheers
Graham

**recruit** · **10-24-09, 09:57 AM**

good work mate

**gperkins_1973** · **10-24-09, 10:15 AM**

Recruit,

I have just put the lid on and added more bond and seal on the inside and fill the gaps on the outside of the box. I tell you one thing though my fingers are red raw. Pictures shortly.

cheers

Graham

**Prize78** · **10-24-09, 02:08 PM**

Graham, i'm loving the pics mate, really keen to hear your thoughts once it gets up and running....although that said, i'll probably be able to hear it from my house!!! Do you need to upgrade the foundations for your house??!!

**gperkins_1973** · **10-24-09, 02:48 PM**

Prize78,

Probably mate to be honest. And thats just with the weight of it.

cheers

Graham

**recruit** · **10-24-09, 02:58 PM**

good to see you over here Prize78

graham really is putting this beauty together quite nicely, I would hate to be next door to him once he fires this beast up

**gperkins_1973** · **10-24-09, 03:06 PM**

Recruit,

Me too. How did you come about being a mod on this site mate if you don't mind me asking.

Pleased for you mate though.

I wish I could upload some pics......

Believe me as soon as the neighbour goes out it WILL be cranked up! I am still searching for a BFD bargain at the mo.

cheers

Graham

**recruit** · **10-24-09, 03:18 PM**

I think the word I am looking for is very envious of the forthcoming bass that you will be listening and feeling, if I get a dedicated room eventually then DIY would probably be the best route, or possibly IB, looking through some of the setups in the Shack they really are incredible...

**gperkins_1973** · **10-24-09, 03:24 PM**

Recruit,

The Americans are very inspiring peeps. To be honest mine was modelled on the Seaton Submersive and only because for the money I wanted to better it and I think I should quite easily. The submersive cost pollywoggle £1650 approx including duties etc.... and mine has cost £1450 all in and I think that's a really good price for a sub that hopefully will chuck out heavy bass and be great in the upper bass frequency which is where I am very interested in hence going sealed. I am hoping for about 112db at 10hz with room gain and nearly 140db at 50hz so that should wipe the floor with PB13 ultra I had.

cheers

Graham

**recruit** · **10-24-09, 03:52 PM**

It has always been my opinion that the US make the best subs and still believe this to be the case, lots of fresh ideas coming from here for sure...

**gperkins_1973** · **10-24-09, 04:23 PM**

Recruit

Your right mate and to be honest they all have bigger rooms so they have to have bigger subs. They are a great inspiration to me and also as I have always said on avforums american subs are tonnes better than subs sold in the UK. In the UK we need alot of inspiration because we don't have alot to be honest. Most people seem to hang themselves up with the common brands because its the right thing to do, but it isn't and I think I have prooved that.

If only people would move away from what is the norm here in the UK and you know what that is. I am not saying that they are not poor subs but in my opinion I have had most of them and have always felt left wanting more. Yes I am bass hungary but aren't we all. We all push our subs to their limits and then say why was my sub doing this or that.

Ive shouted off a few times defending american subs on the UK forums and have been knocked down a few times but I will always defend the likes of Epik, ED and Mark Seaton.

cheers

Graham

**Prize78** · **10-24-09, 05:29 PM**

Quote:

recruit wrote:

good to see you over here Prize78

graham really is putting this beauty together quite nicely, I would hate to be next door to him once he fires this beast up

Yeah, I thought i recognised a couple of the usernames on here

I think the national grid could be in trouble once this thing gets fired up

**gperkins_1973** · **10-24-09, 06:13 PM**

It will be like lighting up the christmas lights at the Griswold's. You know what I mean.

cheers

graham

**Prize78** · **10-25-09, 03:07 AM**

ha ha, yeah....i'd recommend you remove anything remotely delicate from your cinema room....it's surely going to vibrate and fall off it's shelf or whatever!! You'll probably end up blowing your windows out!

**recruit** · **10-25-09, 03:13 AM**

Quote:

gperkins_1973 wrote:

It will be like lighting up the christmas lights at the Griswold's. You know what I mean.

cheers

graham

Lol..that is one of my favourite xmas films, lets hope your have more success firing it up than the Griswold's

**gperkins_1973** · **10-25-09, 04:10 AM**

Recruit

I have just ordered the rca to trs connector. God knows when it will arrive but if it does in a couple of days I hope to get it running by tuesday. Its going to be real fun bring it in from the garage I know that much never alone firing it up.

Will probably have my neighbour coming around with one of these.

cheers
graham

**Prize78** · **10-25-09, 04:12 AM**

How much is the hire of a fork lift, Graham?

**gperkins_1973** · **10-25-09, 04:23 AM**

I doubt I will get the forklift through the back gate. Probably better with a crane.

**Prize78** · **10-25-09, 04:28 AM**

Ha ha, yeah, ....will it go down the chimney??!

**gperkins_1973** · **10-25-09, 04:37 AM**

It would be a nice christmas present.

Graham

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