 300BSE output transformer 3K7:6R (Glasshouse 300BSE series amplifier)
CODE TOP001
open frame 300BSE mains transformer (Glasshouse 300BSE series amplifier)
CODE TMA001
open frame 300BSE 10H, 250mA choke (Glasshouse 300BSE series amplifier)
CODE TCH001
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TVC TRANSFORMERS - FOR PASSIVE PRE-AMPLIFIER
Following the success of our Glasshouse Passive pre-amplifier No. 1 kit, we have launched a transformer volume control version of the passive. At the heart of the Glasshouse TVC Passive pre-amplifier is a pair of 24 stepped Glasshouse TVC transformers. Built on a 147 lam, they are not only affordable, but perform superbly. We have decided to offer you the transformers separately from the kit, not only for those who already have the standard kit and wish to upgrade, but for those who like to scratch build.
The transformers are supplied with solder tags, so choosing a good wire is essential. We recommend the 0.5mm dia. Mundorf 99%silver/1%gold wire, it sound excellent and is also bend friendly. see the wires page. To control which winding you are feeding off you will need a 2 pole, 23/24 way selector, we sell two types, the Audio Note switch and the switch used in the Dale Vishay stepped attenuators. both of these are 2 pole 23 way so tag 24 on the transformer is not use. See our switches/potentiometer page. The measured THD and noise is a very low 0.023%, as measured in our kit. Each step of the TVC transformer is 2dB, so you will get great control over the full range.
The price for a pair is an amazing £150.00 + vat + carriage.
See the pictures below:
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Glasshouse TVC transformer
CODE TVC
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Glasshouse TVC transformer layout
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frequency response of Glasshouse TVC passive kit
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CUSTOM MADE TRANSFORMERS
With the success of Glasshouse valve amplifier kits, we have decided to make available for separate purchase the transformers which these kits feature. To complete the picture and to build up the range of transformers we are also, offering a custom made transformer service. Where upon, you can benefit from the expertise of our transformer designers for your specialist transformer.
OUTPUT TRANSFORMERS
All Glasshouse output transformers are designed by Andy grove. Andy has designed thousands of output transformers and taught numerous transformer manufacturers exactly how to wind them. He is one of the best designers in the world and knows exactly how to achieve the best performance and sound. Luckily for hificollective he will extend his design prowess to those who do not know how to calculate the primary impedance for the output valves.
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product code
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primary:secondary impedance
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recommended valves
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size
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power output/type
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finish (optional)
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TOP001 |
3.7K:6R |
300B, 2A3 with cathode follower as driver circuit |
120 lam, 2.5inch stack |
20W / SE |
all |
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TOP002 |
2.7K:6R |
300B, 2A3 |
120 lam, 2.5inch stack |
20W / SE |
all |
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MAINS TRANSFORMERS
After 30 years experience in transformer design, creating countless mains transformers for valve amplifiers, you can be sure that designer Graham Luscombe knows a thing or to he is also, involved in the production of our Glasshouse mains transformers. They are guaranteed to be stable, within specification, without mechanical hum and will not overheat.
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product code
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primary winding (optional)
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secondary winding
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size
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VA rating
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finish (optional)
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TMA001 |
100Vac, 110Vac, 120Vac, 220Vac, 230Vac, 240Vac |
260V-0-260V,250mA, 160V-0-160V,50mA, (0-9V,2A)x2, (0-9V,3A)x2, 0-5V,3A |
120 lam, 2.5inch stack |
251VA |
all |
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CHOKES
Chokes designed by Graham Luscombe. The standard Glasshouse chokes cater for capacitor input filter, but can be created for the more demanding choke input filter. To see the different circuits of the two types click here.
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product code
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value
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size
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finish
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application
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TCH001 |
10H, 250mA |
Lamination 29, 1.5inch stack |
open frame |
capacitor input filter |
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