Diy fullrange speakers and EL84SE Amplifier

[350650]

Full range speakers : 10" Bolton Full range drivers

Valve Amplifier: EL84 Single Ended 6SN7 preamp
body still has to be made. just testing the amp before finalizing all the work.
I m very happy withe the sound of the amp. Its sufficient as far as my taste as per music.

Source: Yamaha CDC-675
some pictures n videos:
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YouTube - Diy full range speakers and el84 single ended amp .MOV

http://www.youtube.com/watch?v=0tnONE7ceVU

Please suggest what else i can do with this set of speakers. I am thinking about super\horn tweeters with a crossover tuned at 13khz. The crossover is complete and i tried it with a local dome tweeter which was low spl as compared to the bolton driver.

 

[captrajesh]

Nice looking stuff. Welcome to HFV.

 

[avidyarthy]

wow .... I shall come and have a look one day for sure.

 

[spirovious]

Welcome to HFV with good project.

 

[gvenu]

hi,

I too will visit you soon

rgds,
venu

 

[GeorgeO]

Promising start.I use Fostex 167E FR drivers in my towers, mated to a Class A 2A3 AMP

 

[longshanks]

Great effort!

what is the music playing in your first video?


EDIT: ok got it , it is NuSound - Breathe With Me.

 

[Kittu]

Nice Work. Clean Vocals from the 2nd video...

 

[anilva]

Very impressive. Great effort. Just goes to prove you don't need to have big name amps and speakers to get very good quality music. It is all about the right design and matching, and your taste ofcourse. Excellent work. Keep us posted.

Welcome to HFV DIY...

Cheers.

 

[hifiashok]

Welcome!!!

wow .... I shall come and have a look one day for sure.

hi,

I too will visit you soon

rgds,
venu

ditto!

 

[CANDUU]

Welcome to hfv.... Nice work buddy...How much money it took for u to make this speaker's?
Where and how did u bought the drivers?

 

[t.antony]

Welcome to the forum...

That's a nice DIY setup you got in there, are your speakers Open Baffle?

Please suggest what else i can do with this set of speakers. I am thinking about super\horn tweeters with a crossover tuned at 13khz. The crossover is complete and i tried it with a local dome tweeter which was low spl as compared to the bolton driver.

I have experienced on axis beaming at the whizzer cone in my 8" inch Philips fullrange, fixing a phase plug had produced good results and I would recommend the same treatment for your driver as well. Some information regarding this is available at my thread.

The local domes are not suitable for use as a super tweeter, you might need to use a piezo super tweeter like the Motorolla KSN1005. I bought a pair sometime back for Rs.700. It was loud for for indoor use and I had to use a series resistance and direct it towards the back wall. IMHO a back firing super tweeter could add brilliance to the fullranger sound.

Regds...

 

[quad]

Nice work.
Look fwd to more details - what schematic/design, output
transformers, NOS or new tubes etc.
Are the speakers open baffle?
Those not on facebook (like me) cannot see the pics, as it asks for a login.

Prasad

 

[350650]

Thanks a lot for feedback n liking it. The bolton drivers are in a sealed type enclosure [no bass ports] whose volume is 81ltrs. The bolton drivers costed me arnd 1700rs, mdf boards n mica sheet - 2500 and carpenter - 2500rs. The valves are all nos 6sn7 [rca], el84 [bel and philips] and 5yg3 [toshiba]. I also thought about the phase plug but there's a prob that the whizzer cone is not producing high frequencies. the high frequencies are being produced by the centre metal dome n replacing it with phase plug will not be a good idea for me.
Anyone who likes to audtion these just call me 9999102185. It would'nt be really possible without the help of my uncle and my dad who really helped me a lot.

 

[350650]

Photos of driver and speakers:

 

[350650]

sum more pics

 

[350650]

driver Photographs

 

[350650]

Some more Videos:YouTube - Diy tube amp and speaker test part 3.MOV
YouTube - angus and julia stone
http://www.youtube.com/watch?v=Pl-HN75_Juw&feature=related

 

[grubyhalo]

Love the finish! Really nice work!

 

[keith_correa]

I also thought about the phase plug but there's a prob that the whizzer cone is not producing high frequencies. the high frequencies are being produced by the centre metal dome n replacing it with phase plug will not be a good idea for me.

Are you saying that the metal cap is not a dust cap but a high frequency driver? Is this a coax driver?