Вот, что нарыл:
2012-04-25 3:47 pm
There's reason Celestion doesn't provide T-S specs - a V-30 is not a "small signal" speaker.
I don't have a V-30 to hand, but the WGS Retro 30 is similar. The cone weight is too much for the magnet, so they don't work very well in a TL. The Qts is too high for porting; they'll work best in a large, closed enclosure. While they're used in many smaller cabs and even open-backed combos, the V-30 is at home in a 4x12.
2012-04-25 5:23 pm
Thank you.
according the URL
https://wgs4.com/content/Retro30the WGS Retro 30 has follow parameters:
Resonant Frequency (Fs) 98 Hz
DC Resistance (Re) 6.90 Ohm
Coil Inductance (Le) 0.38 mH
Mechanical Q (Qms) 15.53
Electromagnetic Q (Qes) 0.61
Total Q (Qts) 0.59
Compliance Equivalent Volume (Vas) 1.35 cu ft (x 0,02832 m3 x 1000 = ~ 40 liters)
Mechanical Compliance of Suspension (Cms) 0.10 mm/N
BL Product (BL) 13.88 T-M
Diaphragm Mass Inc. Airload (Mms) 27.69 grams
Surface Area of Cone (Sd) 53.24 cm squared
Sound Pressure Level (spl) 100 db
Тут смысл в том, что динамик другой компании, конкретно WGS Retro 30, близок к Vintage30, и предлагается воспользоваться параметрами от него.
Хотя на мой слух оно не совсем копия, есть что-то похожее, но не более.
... и добавил:Есть такое замечание:
Many guitar speaker have a very low Xmax. The tradeoff for maximum effeciency against linearity.... и добавил:И кстати можно отметить, что действительно, гитарный динамик больше рассчитан на большой сигнал, и измерять на малом сигнале по стандарту не имеет смысла.
... и добавил:Еще информация:
From Celestions web site, they say there serve no purpose in guitar cabs
Thiele-small parameters
Thiele Small parameters are useful for controlling the low frequency response of sealed or ported cabinet systems by changing the cabinet internal volume, and port dimensions. However they are of limited use when designing a guitar speaker cabinet.
Electric guitar speakers do not reproduce 'low' frequencies (the low E string of a lead guitar has a fundamental of 82Hz) and so the frequencies at which Thiele Small parameters have significance are mostly below the operating range.
Also, the parameters are measured at very small signal levels. Guitar speakers become non linear at very low levels compared to other types of speaker, greatly reducing the significance of Thiele Small parameters in actual speaker use. Using the Thiele Small parameters of a typical guitar speaker, you will find that halving or doubling the cabinet size makes minimal difference to the response.
They have no relevance to open back cabinets.
Care should be exercised designing ported (or reflex) cabinets for guitar speakers as the increased cone excursion below the tuning frequency can cause speaker damage.
The cabinet size, shape and construction are of far higher significance than the internal volume. Cabinet design using Thiele Small parameters ignores these most fundamental aspects. Important factors include the material you make the cabinet from, the panel sizes and shapes, how they are joined, how the cabinet is finished, the mounting of the speaker, etc. These, not Thiele Small parameters are the critical factors in the design and ultimately the sound of a guitar speaker cabinet.... и добавил:Кстати сами Celestions говорят о том, что гитарные динамики искажают звук, то о чем я писал в теме импульсов.
Размещение рекламы