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Old 30th March 2013, 06:28 PM   #4931
12B4A is offline 12B4A  United States
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Quote:
Originally Posted by Dinkers View Post
Thanks.
That's well laid out and stuffed to the brim. Very nice work!
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Old 30th March 2013, 07:53 PM   #4932
Dinkers is offline Dinkers  Poland
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Quote:
Originally Posted by buzzforb View Post
Nice JBL. Thats the 123woofer,correct.
Yes, the JBL 4110 woofer works 123A. By the way I present my new project SE KT88 monoblocks. Regards Dinkers
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File Type: jpg JBL123 A.jpg (85.8 KB, 1195 views)
File Type: gif SE kt88 1.gif (218.7 KB, 1180 views)
File Type: gif SE kt88 2.gif (235.8 KB, 1148 views)
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Old 30th March 2013, 10:58 PM   #4933
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Drinkers: compact pro looking build. I love the EL34 but more so in pentode UL SE mode.
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Old 31st March 2013, 02:38 PM   #4934
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Good to see some metal work for the heat generating equipment.
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Old 2nd April 2013, 03:15 PM   #4935
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A quick and dirty build. Initially wanted to add a lightspeed as attenuator. Hence the holes in the front. Alas not enough space. I'm very happy with the sound of the RH84. Especially as the output transformers were little 10$ jobbies from Triodeelectronics I bought yeaaaars ago. Very satisfying to build something relatively frugally and have it turn out so well... soundwise. Here still pictured with Russian made EL84. (Not the EV version) which have now been replaced with JJ which were slightly better sounding imo.
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Last edited by Bas Horneman; 2nd April 2013 at 03:17 PM.
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Old 2nd April 2013, 10:49 PM   #4936
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Bas: as you say simple clean build and satisfying sound.
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Old 4th April 2013, 02:28 AM   #4937
wlowes is offline wlowes  Canada
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Quote:
Originally Posted by Bas Horneman View Post
A quick and dirty build. Initially wanted to add a lightspeed as attenuator. .
It looks great. I am sure you have considered that the lightspeed can be controlled outboard. The only thing that needs to be in the amp is the pair of LDRs and the 100uf caps on each channel. I used CatV cable to run to a separate box with the PS, reg and Pots. You can still get the great sound of the lightspeed in tight quarters.
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Old 4th April 2013, 03:22 PM   #4938
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Quote:
It looks great. I am sure you have considered that the lightspeed can be controlled outboard. The only thing that needs to be in the amp is the pair of LDRs and the 100uf caps on each channel. I used CatV cable to run to a separate box with the PS, reg and Pots. You can still get the great sound of the lightspeed in tight quarters.
Thanks for the idea. Might just order some more LDR's because I don't feel like desoldering them from the current pcp.
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Old 5th April 2013, 09:32 AM   #4939
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Quote:
Originally Posted by Supersurfer View Post
Hi,

Some pictures of my current amp.

Used Tubes:
input :Standard 4019A
driver: Western Electric VT-25
power: Full Music PX-25 mesh
Rectifiers: half wave Klangfilm KL75303 (Telefunken RGN 1404)

All tubes are connected with interstages, the rest of the transformers you see are chokes.
The amp has double power channels; one for mid/high (actively filtered), one for low frequencies. The channels are split after the VT-25 with two interstages (primary in series) to drive two PX-25 into two permalloy output transformers.
Volume control is by a transformer with 24 sec. windings. the counter tubes indicate the volume setting.
Front is made from maple wood, knob from thuya burl wood, rest is Padauk wood.
Impressive at least. Haven't ever seen something like that before (OK, I'm a newbie at tube stuff, just one year on it... )

Quote:
Originally Posted by Bas Horneman View Post
Thanks for the idea. Might just order some more LDR's because I don't feel like desoldering them from the current pcp.
High risk of un-matching them
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Old 12th April 2013, 02:31 PM   #4940
McGyver is offline McGyver  Poland
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My little DIY tube preamplifier with remote:

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