DIY & RESTORATION GALLERY: joseph02's Hashimoto HM-7 SUT

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PIGDOG'S GARRARD 301/SME 3009 S2i/BON'S PLINTH

Postby hypertriode » Fri Jan 27, 2006 8:26 pm

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Postby s2kov » Tue Jan 31, 2006 9:28 am

Beautiful, ganda master! :D
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Postby kimpao » Tue Jan 31, 2006 9:31 am

kilala ko yan garrard na yan ah! :lol2:
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Postby pigdog » Tue Jan 31, 2006 10:49 pm

wonderful work courtesy of HandyMan! i guess this garrard has been around! :lol:
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Postby BonD » Wed Feb 01, 2006 7:27 am

pigdog wrote:wonderful work courtesy of HandyMan! i guess this garrard has been around! :lol:


dami salamat mga bosing :D
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Postby Superman » Wed Feb 01, 2006 7:50 am

bon, hanep to ah! ganda! nagmukhang brand new!!! :D

sana ganyan din itsura nung pinapagawa ko :D :D :D :lol: :lol: :lol:

CONGRATS MASTER HYPER! :D yung LPs usap na lang tayo :lol:
Last edited by Superman on Wed Feb 01, 2006 7:56 am, edited 1 time in total.
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Postby hypertriode » Wed Feb 01, 2006 7:53 am

Handyman wrote:
pigdog wrote:wonderful work courtesy of HandyMan! i guess this garrard has been around! :lol:


dami salamat mga bosing :D


Bon,
next project: Thorens 124 mk II / SME 3012 !
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Postby BonD » Wed Feb 01, 2006 11:31 am

hypertriode wrote:
Bon,
next project: Thorens 124 mk II / SME 3012 !


Sige lang sir..pag usapan natin sa opening ng Annex :D
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Postby vintage_dog » Wed Feb 01, 2006 12:50 pm

great woodwork bon.

can you do a similar thing on a thorens td160 super?
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Postby BonD » Wed Feb 01, 2006 6:08 pm

vintage_dog wrote:great woodwork bon.

can you do a similar thing on a thorens td160 super?


Salamat sir VD. Yes sir kaya natin yan.
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Postby bono » Wed Feb 01, 2006 6:58 pm

Ganda bro! :shock: :shock: :shock:
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Postby hypertriode » Fri Feb 03, 2006 8:13 pm

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Postby JackD201 » Fri Feb 03, 2006 8:31 pm

BAD BOY!
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ULTRA-RARE DYNAKIT MARK II MONOS

Postby hypertriode » Tue Mar 07, 2006 2:06 pm

50 watts of EL-34 power per monoblock!

2 x EL-34
1 x 6AN8
1 x 5U4G

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Postby marty_e » Tue Mar 07, 2006 2:10 pm

Ganda Rene, what's that - a Mark IV in a Mark III Chassis? :wink:
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Postby hypertriode » Tue Mar 07, 2006 2:11 pm

Description:

The Dynakit Mark II is a complete 50 watt power amplifier kit which offers the highest possible fidelity, at low cost and in a compact arrangement. It uses a circuit of outstanding performance characteristics, along with top quality parts, including the new Dynaco A-430 output transformer – the finest available. The measured specifications show that the Dynakit is an amplifier of unequalled performance, and its listening quality is also unrivalled by any regardless of price.

The design features of the Dynakit which contribute to its superior listening quality do not show up in the usual steady-state laboratory specifications. For example, the Dynakit does not exhibit bounce and flutter when pulsed because of its wide margin of stability. The Dynakit, unlike other amplifiers, has been designed to provide its specified performance on a loudspeaker load, not just a resistive load as in the laboratory. In particular, the connection of a loudspeaker does not distort the high frequency square wave performance. In addition, the Dynakit’s power handling capabilities are maintained over the entire audio band without the sharp rise in distortion which characterises most amplifiers at the low and high frequencies.

The Dynakit uses a unique circuit. A pentode voltage amplifier, with parameters adjusted for minimum distortion, is directly coupled to a cathodyne phase inverter. High frequency compensation is employed in a capacitive feedback loop, which corrects the inherent unbalance of this type of phase inverter. The inverter drives the output tubes which are operated with fixed bias. The connection of the output tubes includes a small percentage of screen loading which improves the regulation of the stage and makes it comparatively uncritical of load impedance. The impedance match and bias conditions utilized in the output stage provide minimum distortion operation over a very wide dynamic range. In addition, 20 dB of negative voltage feedback lowers the distortion to an unmeasurable proportion at normal listening levels and to less than l% IM at 50 watts output.

Phase compensation at both high and low frequencies is incorporated into the circuit arrangement to provide a wide margin of stability and to make construction uncritical. This feature of the design means that there is no tendency toward motorboating or oscillation under any conditions of use.

Specifications:

Power Output: 50 watts continuous, 100 watts peak.

Intermodulation Distortion: Less than 1% at 50 watts;, less than .5% below 35 watts. These figures apply for any conventional combination of test frequencies.

Frequency Response:

± .5 dB 6 cps to over 60 kc.
± .1 dB 20 cps to 20 kc at any level between 1 milliwatt and 50 watts.

Power Response: 20 cps to 20 kc within 1 dB of 50 watts without exceeding 1% harmonic distortion over this range.

Square Wave Response: Essentially undistorted 20 cps to 20 kc on loudspeaker load.

Sensitivity: 1.5 volts rms input for 50 watts output.

Hum and Noise: 80 dB below rated output.

Damping Factor: 15.

Output Impedances: 8 and 16 ohms (no restrapping required for changing output impedances) (choice of 4, 8, and 16 ohms also available at extra cost).

Tubes: 6CA7, EL-34 (2). (6550s can be substituted in output without wiring changes), 6AN8, 5U4GB.

If it is desired to use 6550 tubes for output tubes in place of the 6CA7/EL-34 tubes these can be inserted directly. The only adjustment which need be made is to set the bias to give a reading of 1.92 volts at the bias check point.

Size: 9" by 9" by 6-3/4" high.

Weight: 27 pounds.

Pre-Amp Provision: Any pre-amp can be used. For pre-amps without power a spare socket is included which permits drawing 200 to 450 volts dc at 20 ma and 6.3 volts ac at 1 amp.

Designed by:

David Hafler, Ed Laurent

Year Introduced:

1955
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Postby zetroce » Tue Mar 07, 2006 2:50 pm

Rene,

Ito ba yung nakababatang kapatid... :D
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Postby Superman » Tue Mar 07, 2006 3:41 pm

hanep! ang pogi ah! eto ba yung tinext mo sa akin, sir?? :twisted: :wink: :twisted: :wink: :twisted: :wink:
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Postby hypertriode » Tue Mar 07, 2006 7:29 pm

marty_e wrote:Ganda Rene, what's that - a Mark IV in a Mark III Chassis? :wink:


actually mart, it's a Mark III using EL-34's & 5U4G as rectifier. it has the same input & driver circuit as the Mark III.
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Class A 40 wpc KT-88 power amp

Postby hypertriode » Sat Apr 15, 2006 5:37 pm

Tube complement:
4 x KT-88
2 x 6SN7
2 x 6AU6/EF94

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